This applied research seeks to explore feasible plant design for manufacturing insulation materials for construction projects using waste sheep fleece to address environmental issues related to wasted sheep wool and e...This applied research seeks to explore feasible plant design for manufacturing insulation materials for construction projects using waste sheep fleece to address environmental issues related to wasted sheep wool and enhance the gross national product. The process starts by collecting low-cost sheep fleece from farms and processed via a production line, including scouring, plucking, carding, thermal bonding, and packing. The design process involves determining an optimal location, infrastructure, staffing, machinery, environmental impact, and utilities. A final economic analysis is undertaken to estimate the product’s cost, selling price, and break-even point based on the anticipated capital and operational costs. The plant is intended to process 6778 tons of sheep wool annually. The study suggests that Mafraq Industrial City is a perfect location for the plant, and purchasing land and structures is the optimal option. The projected capital cost is 1,416,679 USD, while the anticipated operational costs amount to 3,206,275 USD. Insulation material production is estimated to be 114,756 m3 annually. The material may be manufactured into 1 m wide, 0.05 m thick sheets for 2.02 USD per square meter. Thus, for a 10-year plant, a 2.47 USD/m2 selling price breaks even in one year.展开更多
[Objective] To get major genes for wool traits regulation from immune genes. [Methods] Microarray technology was used to detect differentially expressed immune genes between body side skin （more wool growing） and gr...[Objective] To get major genes for wool traits regulation from immune genes. [Methods] Microarray technology was used to detect differentially expressed immune genes between body side skin （more wool growing） and groin skin （no wool growing） of Aohan fine wool sheep. [Results] 46 immune genes （fold change 〉2.0） were identified and classified, and then 6 of which were selected for QPCR confir- mation. The degree of consistency of the QPCR and microarray results was 66.67%, [Conclusion] Immune privilege may participate in wool growth regulation.展开更多
The clinical symptoms of a disorder which is known locally as ＂wool-eating ailment＂ in Guizhou semi-fine wool sheep in the Weining County of Guizhou Province, China, are poor weight gain, lost appetite, pica, emacia...The clinical symptoms of a disorder which is known locally as ＂wool-eating ailment＂ in Guizhou semi-fine wool sheep in the Weining County of Guizhou Province, China, are poor weight gain, lost appetite, pica, emaciation, and wool-eating. The mineral composition of forage, and samples of blood, liver and wool from Guizhou semi-fine wool sheep in affected ranches were compared with those from the unaffected areas. The mean concentration of iron in forage from affected pasture was significantly higher than that from the unaffected pasture. The mean concentration of sulfur in forage from the affected and unaffected pasture was similar and within normal ranges. The mean concentration of sulfur in blood, liver and wool from the affected Guizhou semi-fine wool sheep was significantly lower than that from the unaffected sheep while the content of iron in blood, liver and wool from the affected sheep was significantly higher than that from the unaffected sheep. Oral administration of calcium sulfate prevented and cured the disease. We concluded that the disease of Guizhou semi-fine wool sheep in the Weining County is due to S deficiency caused by the high Fe in forages.展开更多
Background： Increasing the polyunsaturated fatty acid （PUFA） content and decreasing the saturated fatty acid （SFA） content of mutton can help to improve its nutritional value for consumers. Several laboratories h...Background： Increasing the polyunsaturated fatty acid （PUFA） content and decreasing the saturated fatty acid （SFA） content of mutton can help to improve its nutritional value for consumers. Several laboratories have evaluated the effects of vitamin E on the fatty acid （FA） composition of muscle in sheep. However, little information is available on wool sheep, even though wool sheep breeds are an important source of mutton, especially in northern China where sheep are extensively farmed. The present study was designed to address the effects of vitamin E on muscle FA composition in male Aohan fine-wool sheep. Methods： Forty-two male Aohan fine-wool lambs （5 mo old） with similar initial body weight were randomly divided into seven groups and fed diets supplemented with 0 （control group）, 20, 100, 200, 1,000, 2,000, or 2,400 IU/sheep/d vitamin E for 12 mo. Three lambs from each group were slaughtered to measure vitamin E and FA content in the Iongissimus lumborum （LL） and gluteus medius （GM） muscles. Results： Vitamin E concentrations in the LL and GM increased significantly after 12 mo of vitamin E supplementation （P 〈 0.05）. However, this increase did not occur in a dose-dependent manner because the muscle vitamin E concentration was highest in the 200 IU/sheep/d group. Dietary vitamin E supplementation also caused a significant reduction in SFA content and an increase in monounsaturated FA （MUFA） content in the LL and GM （P 〈 0.05）. All six doses of vitamin E significantly increased cis9 tronsl -conjugated linoleic acid （cgtl -CLA） content in the LL compared with the control group （P 〈 0.05）. Conclusions： Dietary supplementation with vitamin E increased muscle vitamin E content and improved the nutritional value of mutton by decreasing SFA content and increasing MUFA and c9tl 1-CLA contents in Aohan fine-wool sheep. These effects were greatest in sheep fed a diet containing 200 IU/sheep/d vitamin E.展开更多
Twenty mid side wool samples of crossbred sheep were collected and their characteristics were determined. Data analyzed by SAS software and Duncan’s multiple range tests was used for comparison of mean wool character...Twenty mid side wool samples of crossbred sheep were collected and their characteristics were determined. Data analyzed by SAS software and Duncan’s multiple range tests was used for comparison of mean wool characteristics. Average fleece weight, yield, wool diameter, Fine fiber and staple length were: 431.59 ± 38.95 gr, 65.14%, 14.24 ± 0.67 μm, 48.67 ± 5.59, and 43.65 ± 4.15 mm respectively. Mean fleece weight was significantly affected (p 1 and F2 generation 11.84 ± 0.58, 16.27 ± 0.72 μm respectively. There were effective differences among ages (12.55 ± 0.74, 14.47 ± 0.58 and 13.11 ± 0.64 μm for 1, 2 and 3 yr old respectively). Wool diameter of younger animals, males and F1 was so fine (12.55, 12.87 and 11.84 μm respectively). Staple length of F2 crosses was significantly longer than F1 crosses (p 1 was significantly finer than F2, but length and down fiber percentage was less than second generation. As wild sheep shed his fiber in winter, the first filial crosses also shed their fibers from the end of winter to early spring. Shedding was seldom observed in F2 generations. It seems likely that wool from crossbred sheep could be used for those applications for which cashmere is suitable. This study indicates that, such crossbred sheep have a superfine wool and could be used in pure or blend for textile industry.展开更多
The aim of our present study was to construct genetic structure and relationships among Chinese fine-wool sheep breeds. 46 individuals from 25 breeds or strains were genotyped based on the Illumina Ovine 50K SNP array...The aim of our present study was to construct genetic structure and relationships among Chinese fine-wool sheep breeds. 46 individuals from 25 breeds or strains were genotyped based on the Illumina Ovine 50K SNP array. Meanwhile, genetic variations among 482 individuals from 9 populations were genotyped with 10 microsatellites. In this study, we found high genetic polymorphisms for the microsatellites, while 7 loci in the Chinese superfine Merino strain （Xinjiang types） （CMS） and 5 loci in Gansu alpine superfine-wool sheep strain （GSS） groups were found deviated from Hardy-Weinberg equilibrium （HWE）. Genetic drift FsT=0.019 （P〈0.001） and high gene flows were detected in all the 7 fine-wool sheep populations. Phylogenetic analysis showed fine-wool sheep populations were clustered in a group independent from the Chinese indigenous breeds such that the 7 fine-wool sheep clustered distinct from Liangshan semifine-wool sheep （LS） and Hu sheep （HY） reflected by different population differentiation analyses. Overall, our findings suggested that all fine-wool sheep populations have close genetic relationship, which is consistent with their breeding progress. These populations, therefore, can be regarded as open-breeding populations with high levels of gene flows. Furthermore, the two superfine-wool strains, viz., CMS and GSS, might be formed by strong artificial selection and with frequent introduction of Australian Merino. Our results can assist in breeding of superfine-wool sheep and provide guidance for the cultivation of new fine-wool sheep breeds with different breeding objectives.展开更多
[Objective]To investigate the population genetic structure of Keerqin fine wool sheep. [Method]The genetic parameters of wool traits in Keerqin fine wool sheep were calculated by employing paternal half sib correlatio...[Objective]To investigate the population genetic structure of Keerqin fine wool sheep. [Method]The genetic parameters of wool traits in Keerqin fine wool sheep were calculated by employing paternal half sib correlation method. [Results]The traits with high heritability( h≥0. 3) included wool length( 1-year old),wool yield( 1-year old) and wool yield( 2-year old); that with medium heritability( 0. 1≤h≤0. 3) included wool fineness( 1-year old),wool fineness( 2-year old),wool length( 3-year old) and wool yield( 3-year old). There were extremely significant positive correlations between wool fineness( 1-year old) and wool fineness( 2-year old),between wool fineness( 1-year old) and wool fineness( 3-year old),between wool length( 1-year old) and wool length( 2-year old),between wool length( 1-year old) and wool length( 3-year old),and between wool fineness( 2-year old) and wool fineness( 3-year old),with the correlation coefficients of 0. 653 0,0. 625 8,0. 489 6,0. 578 8,0. 578 4 and 0. 554 6 respectively. The results showed that the phenotypic correlation was poorer than genetic correlation among the wool traits. [Conclusion]The wool fineness,wool yield and body weight of Keerqin fine wool sheep all fail to meet the excellent level and need to be improved further.展开更多
To investigate the population genetic structure of Keerqin fine wool sheep, the paternal half sib correlation method was employed to estimate the body weight traits, genetic and phenotypic correlation between fleece t...To investigate the population genetic structure of Keerqin fine wool sheep, the paternal half sib correlation method was employed to estimate the body weight traits, genetic and phenotypic correlation between fleece traits in the Keerqin fine wool sheep. The results showed that the correlation coefficients were 0.690 1, 0.593 1, 0.581 2, 0.210 2 for birth weight with weaning weight, body weight at one week of age, body weight at two week of age, and body weight at three week of age, respectively. The genetic correlations were highly significant （ P 〈0.01 ） for the four pairs of traits. The correlation coefficients were 0.373 3, 0.274 1, 0.268 2 for weaning weight with body weight at one week of age, body weight at two week of age, and body weight at three week of age, respectively. The genetic correlations were also extremely significant （ P 〈 0.01 ） for the three pairs of traits. The correlation coefficients were 0.712 0, 0.805 0, 0.717 1,0.701 9, 0.531 6, 0.719 0, 0.681 3 and 0.521 3 for wool fineness at one week and two week of age, wool fineness at one week and three week of age, staple length and fleece weight at one week of age, staple length at one week and three week of age, fleece weight at one week of age and wool fineness at three week of age, wool fineness at two week and three week of age, wool fineness at two week of age and fleece weight at three week of age, and fleece weight at two week and three week of age, respectively. The high genetic correlations were extremely significant （ P 〈0. O1 ） for the eight pairs of traits. The phenotypic correlations were generally lower than the genetic correlations.展开更多
This study provides information on fleece characteristics for stakeholders in a wool trade to make sheep farming more viable and profitable for farmers. Wool fiber samples were taken from four sheep body parts of the ...This study provides information on fleece characteristics for stakeholders in a wool trade to make sheep farming more viable and profitable for farmers. Wool fiber samples were taken from four sheep body parts of the 95 sheep. Tests were conducted to analyze the fiber diameter,length,color,and strength. Correspondingly,fiber surface morphology and the medullated fibers were also analyzed and the results were reported. The fiber characteristics from the shoulder and flank were better than those shorn from back and belly/legs. From the results, the values of the measured parameters suggest potential for improvement of economical qualities and in fostering the economic and industrial development展开更多
Objective] This study aimed to estimate the heritability of Aohan fine-wool sheep＇s main economic characters. [ Method] Half-sib correlation in sire method was adopted to estimate Aohan file-wool sheep＇s Birth Weigh...Objective] This study aimed to estimate the heritability of Aohan fine-wool sheep＇s main economic characters. [ Method] Half-sib correlation in sire method was adopted to estimate Aohan file-wool sheep＇s Birth Weight（BW）, Weaning Litter Weight （WLW）, Weaning Litter Staple Fineness（WLSF）, One-age Staple Fineness（OASF）, One-age Staple Length （ OASL）, One-age Wool Yield（OAWY）, Main Economic Characters of One-age Aohan fine-wool sheep, Two-age Staple Fineness （TASF）, Two-age Staple Length （TASL）, Two-age Wool Yield （TAWY）, Two-age Weight （TAW） after cropping. [ Result] The heritability was 0.1 -0.7. [ Conclusion~ The heritability of Aohan fine-wool sheep＇s main characters was middle-and-high.展开更多
Based on the data from the survey of cashmere-goat and wool-sheep in 12 demonstration counties of China's main producing areas in 2012,the development of farming professional cooperatives of cashmere-goat and wool...Based on the data from the survey of cashmere-goat and wool-sheep in 12 demonstration counties of China's main producing areas in 2012,the development of farming professional cooperatives of cashmere-goat and wool-sheep was analyzed from aspects of status quo,problems and causes,and some suggestions about cooperation cognition and mode,service capacity,personnel training,system improvement and preferential policies were put forward to promote the development of the farming professional cooperatives.展开更多
Grassland ecological protection measures such as grazing prohibition and livestock changed traditional production mode of the cashmere goat industry,and exerted adverse influence on production of cashmere and income o...Grassland ecological protection measures such as grazing prohibition and livestock changed traditional production mode of the cashmere goat industry,and exerted adverse influence on production of cashmere and income of farmers and herdsmen.On the basis of the survey in Inner Mongolia,Xinjiang,Jilin,Liaoning,Shanxi,and Yunnan,this paper evaluated effect of subsidy policies on wool sheep and cashmere goat industry and present some existing problems in the implementation of these policies.Finally,it came up with following recommendations:strengthening cultivation and protection of wool sheep and cashmere goat varieties,increasing subsidy level of fine varieties and expanding coverage of subsidy policies,formulating wool sheep and cashmere price supportive measures,enhancing construction of wool sheep and cashmere goat sci-tech service system,and promoted standardized production of cashmere goat.展开更多
Evaluation and grading of wool based on sex and age can help to improve economic value of wool. This study was conducted to investigate the wool production and fleece characteristics of Arabi sheep in Khuzestan provin...Evaluation and grading of wool based on sex and age can help to improve economic value of wool. This study was conducted to investigate the wool production and fleece characteristics of Arabi sheep in Khuzestan province The right mid-side wool samples were taken from 90 Arabi sheep (1 - 4 years;16 male and 74 female) by hand shearing. The staple length of shoulder, flank and rump were 13.18 ± 0.27, 13.31 ± 0.22 and 14.27 ± 0.25 cm, respectively. The greasy fleece weight, wool wax, vegetable matter, yield percentage, fiber diameter and its coefficient variation measures were 1.72 ± 0.06 Kg;2.77% ± 0.12%;0.54% ± 0.07%;73.36% ± 0.68%;30 ± 0.41 μm;30.23% ± 0.3% respectively. Correspondingly, the medulated fibers, true wool fiber and Kemp fibers were 21.6% ± 1.9%, 76.1% ± 2.04% and 2.5% ± 0.57% respectively. Age and sex had a significant influence on staple lengths. Fleece weight (P < 0.01) and wool wax were (P < 0.05) affected by sex. There was no significant interaction between age and sex groups for fiber characteristics, but it was important for staple between body location (P < 0.05). There were a low considerable kemp and CV of wool diameter percentage on Arabi sheep in comparison with the other Iranian native sheep. The wide variation in fleece weight (0.8 - 3.9 kg);mean staple lengths (8.8 - 19.2 cm);medulated and kemp (0 - 84.04 and 0% - 30.22%);fiber diameter (24.9 - 37.43 μm) suggest potential for improvement of economical traits.展开更多
为了筛选影响发情卵巢发育的关键蛋白,解析彭波半细毛羊繁殖的调控机制,该研究采用TMT(tandem mass tags)蛋白质组学技术对不同发情状态彭波半细毛羊的卵巢进行蛋白质组测序,通过比较分析彭波半细毛羊发情和乏情卵巢蛋白组数据共筛选出...为了筛选影响发情卵巢发育的关键蛋白,解析彭波半细毛羊繁殖的调控机制,该研究采用TMT(tandem mass tags)蛋白质组学技术对不同发情状态彭波半细毛羊的卵巢进行蛋白质组测序,通过比较分析彭波半细毛羊发情和乏情卵巢蛋白组数据共筛选出307个差异表达蛋白,其中下调的差异蛋白为249个(P<0.05),上调的差异蛋白为58个(P<0.05)。这些差异蛋白涉及多种GO分类及KEGG通路。其中GO分类注释显示,差异蛋白与谷胱甘肽转移酶活性,酰基辅酶A脱氢酶活性和磷脂酰肌醇结合等分子功能通路存在密切关联。KEGG通路分析显示,剪切体通路富集水平最高,其中包括SF3A2、PRPF19、BUD31等剪切体通路上的蛋白在细胞生长和分化、凋亡等生物过程中发挥重要作用。同时也发现补体和凝血级联、谷胱甘肽代谢以及细胞色素P450相关通路也表现出显著富集。这些结果为进一步阐明彭波半细毛羊发情和乏情卵巢组织的生理功能变化提供了基础,同时也为全面了解彭波半细毛羊发情规律提供新的参考。展开更多
文摘This applied research seeks to explore feasible plant design for manufacturing insulation materials for construction projects using waste sheep fleece to address environmental issues related to wasted sheep wool and enhance the gross national product. The process starts by collecting low-cost sheep fleece from farms and processed via a production line, including scouring, plucking, carding, thermal bonding, and packing. The design process involves determining an optimal location, infrastructure, staffing, machinery, environmental impact, and utilities. A final economic analysis is undertaken to estimate the product’s cost, selling price, and break-even point based on the anticipated capital and operational costs. The plant is intended to process 6778 tons of sheep wool annually. The study suggests that Mafraq Industrial City is a perfect location for the plant, and purchasing land and structures is the optimal option. The projected capital cost is 1,416,679 USD, while the anticipated operational costs amount to 3,206,275 USD. Insulation material production is estimated to be 114,756 m3 annually. The material may be manufactured into 1 m wide, 0.05 m thick sheets for 2.02 USD per square meter. Thus, for a 10-year plant, a 2.47 USD/m2 selling price breaks even in one year.
基金Supported by Project of National Hair Sheep Industry Technology System(CARS-40)~~
文摘[Objective] To get major genes for wool traits regulation from immune genes. [Methods] Microarray technology was used to detect differentially expressed immune genes between body side skin （more wool growing） and groin skin （no wool growing） of Aohan fine wool sheep. [Results] 46 immune genes （fold change 〉2.0） were identified and classified, and then 6 of which were selected for QPCR confir- mation. The degree of consistency of the QPCR and microarray results was 66.67%, [Conclusion] Immune privilege may participate in wool growth regulation.
基金supported financially by the National Natural Science Foundation of China (40930533/ D011004)the China Agriculture Research System (CARS-40-30)+2 种基金the Science Foundation of Bijie District Grant, China (200905)the Guizhou Provincial Key Technologies R&D Program, China (NY[2010]3041)the Guizhou Governor Foundation, China (2009129)
文摘The clinical symptoms of a disorder which is known locally as ＂wool-eating ailment＂ in Guizhou semi-fine wool sheep in the Weining County of Guizhou Province, China, are poor weight gain, lost appetite, pica, emaciation, and wool-eating. The mineral composition of forage, and samples of blood, liver and wool from Guizhou semi-fine wool sheep in affected ranches were compared with those from the unaffected areas. The mean concentration of iron in forage from affected pasture was significantly higher than that from the unaffected pasture. The mean concentration of sulfur in forage from the affected and unaffected pasture was similar and within normal ranges. The mean concentration of sulfur in blood, liver and wool from the affected Guizhou semi-fine wool sheep was significantly lower than that from the unaffected sheep while the content of iron in blood, liver and wool from the affected sheep was significantly higher than that from the unaffected sheep. Oral administration of calcium sulfate prevented and cured the disease. We concluded that the disease of Guizhou semi-fine wool sheep in the Weining County is due to S deficiency caused by the high Fe in forages.
基金financially supported by projects 200903060CARS-39 from China Agricultural Ministry
文摘Background： Increasing the polyunsaturated fatty acid （PUFA） content and decreasing the saturated fatty acid （SFA） content of mutton can help to improve its nutritional value for consumers. Several laboratories have evaluated the effects of vitamin E on the fatty acid （FA） composition of muscle in sheep. However, little information is available on wool sheep, even though wool sheep breeds are an important source of mutton, especially in northern China where sheep are extensively farmed. The present study was designed to address the effects of vitamin E on muscle FA composition in male Aohan fine-wool sheep. Methods： Forty-two male Aohan fine-wool lambs （5 mo old） with similar initial body weight were randomly divided into seven groups and fed diets supplemented with 0 （control group）, 20, 100, 200, 1,000, 2,000, or 2,400 IU/sheep/d vitamin E for 12 mo. Three lambs from each group were slaughtered to measure vitamin E and FA content in the Iongissimus lumborum （LL） and gluteus medius （GM） muscles. Results： Vitamin E concentrations in the LL and GM increased significantly after 12 mo of vitamin E supplementation （P 〈 0.05）. However, this increase did not occur in a dose-dependent manner because the muscle vitamin E concentration was highest in the 200 IU/sheep/d group. Dietary vitamin E supplementation also caused a significant reduction in SFA content and an increase in monounsaturated FA （MUFA） content in the LL and GM （P 〈 0.05）. All six doses of vitamin E significantly increased cis9 tronsl -conjugated linoleic acid （cgtl -CLA） content in the LL compared with the control group （P 〈 0.05）. Conclusions： Dietary supplementation with vitamin E increased muscle vitamin E content and improved the nutritional value of mutton by decreasing SFA content and increasing MUFA and c9tl 1-CLA contents in Aohan fine-wool sheep. These effects were greatest in sheep fed a diet containing 200 IU/sheep/d vitamin E.
文摘Twenty mid side wool samples of crossbred sheep were collected and their characteristics were determined. Data analyzed by SAS software and Duncan’s multiple range tests was used for comparison of mean wool characteristics. Average fleece weight, yield, wool diameter, Fine fiber and staple length were: 431.59 ± 38.95 gr, 65.14%, 14.24 ± 0.67 μm, 48.67 ± 5.59, and 43.65 ± 4.15 mm respectively. Mean fleece weight was significantly affected (p 1 and F2 generation 11.84 ± 0.58, 16.27 ± 0.72 μm respectively. There were effective differences among ages (12.55 ± 0.74, 14.47 ± 0.58 and 13.11 ± 0.64 μm for 1, 2 and 3 yr old respectively). Wool diameter of younger animals, males and F1 was so fine (12.55, 12.87 and 11.84 μm respectively). Staple length of F2 crosses was significantly longer than F1 crosses (p 1 was significantly finer than F2, but length and down fiber percentage was less than second generation. As wild sheep shed his fiber in winter, the first filial crosses also shed their fibers from the end of winter to early spring. Shedding was seldom observed in F2 generations. It seems likely that wool from crossbred sheep could be used for those applications for which cashmere is suitable. This study indicates that, such crossbred sheep have a superfine wool and could be used in pure or blend for textile industry.
基金sponsored by the Earmarked Fund for Modern China Wool & Cashmere Technology Research System (CARS-40-03)the National Natural Science Foundation for Young Scholars of China (31402057)Project support was provided by the ASTIP (Agricultural Science and Technology Innovation Program) for Genetic Resource and Breeding of Fine-Wool Sheep, Chinese Academy of Agricultural Sciences
文摘The aim of our present study was to construct genetic structure and relationships among Chinese fine-wool sheep breeds. 46 individuals from 25 breeds or strains were genotyped based on the Illumina Ovine 50K SNP array. Meanwhile, genetic variations among 482 individuals from 9 populations were genotyped with 10 microsatellites. In this study, we found high genetic polymorphisms for the microsatellites, while 7 loci in the Chinese superfine Merino strain （Xinjiang types） （CMS） and 5 loci in Gansu alpine superfine-wool sheep strain （GSS） groups were found deviated from Hardy-Weinberg equilibrium （HWE）. Genetic drift FsT=0.019 （P〈0.001） and high gene flows were detected in all the 7 fine-wool sheep populations. Phylogenetic analysis showed fine-wool sheep populations were clustered in a group independent from the Chinese indigenous breeds such that the 7 fine-wool sheep clustered distinct from Liangshan semifine-wool sheep （LS） and Hu sheep （HY） reflected by different population differentiation analyses. Overall, our findings suggested that all fine-wool sheep populations have close genetic relationship, which is consistent with their breeding progress. These populations, therefore, can be regarded as open-breeding populations with high levels of gene flows. Furthermore, the two superfine-wool strains, viz., CMS and GSS, might be formed by strong artificial selection and with frequent introduction of Australian Merino. Our results can assist in breeding of superfine-wool sheep and provide guidance for the cultivation of new fine-wool sheep breeds with different breeding objectives.
基金Supported by Scientific Research Fund of Inner Mongolia University for the Nationalities(NMD1339)
文摘[Objective]To investigate the population genetic structure of Keerqin fine wool sheep. [Method]The genetic parameters of wool traits in Keerqin fine wool sheep were calculated by employing paternal half sib correlation method. [Results]The traits with high heritability( h≥0. 3) included wool length( 1-year old),wool yield( 1-year old) and wool yield( 2-year old); that with medium heritability( 0. 1≤h≤0. 3) included wool fineness( 1-year old),wool fineness( 2-year old),wool length( 3-year old) and wool yield( 3-year old). There were extremely significant positive correlations between wool fineness( 1-year old) and wool fineness( 2-year old),between wool fineness( 1-year old) and wool fineness( 3-year old),between wool length( 1-year old) and wool length( 2-year old),between wool length( 1-year old) and wool length( 3-year old),and between wool fineness( 2-year old) and wool fineness( 3-year old),with the correlation coefficients of 0. 653 0,0. 625 8,0. 489 6,0. 578 8,0. 578 4 and 0. 554 6 respectively. The results showed that the phenotypic correlation was poorer than genetic correlation among the wool traits. [Conclusion]The wool fineness,wool yield and body weight of Keerqin fine wool sheep all fail to meet the excellent level and need to be improved further.
基金Supported by Scientific Research Fund of Inner Mongolia University for the Nationalities(NMD1339)Natural Science Foundation of Inner Mongolia Autonomous Region(20080404MS0401)
文摘To investigate the population genetic structure of Keerqin fine wool sheep, the paternal half sib correlation method was employed to estimate the body weight traits, genetic and phenotypic correlation between fleece traits in the Keerqin fine wool sheep. The results showed that the correlation coefficients were 0.690 1, 0.593 1, 0.581 2, 0.210 2 for birth weight with weaning weight, body weight at one week of age, body weight at two week of age, and body weight at three week of age, respectively. The genetic correlations were highly significant （ P 〈0.01 ） for the four pairs of traits. The correlation coefficients were 0.373 3, 0.274 1, 0.268 2 for weaning weight with body weight at one week of age, body weight at two week of age, and body weight at three week of age, respectively. The genetic correlations were also extremely significant （ P 〈 0.01 ） for the three pairs of traits. The correlation coefficients were 0.712 0, 0.805 0, 0.717 1,0.701 9, 0.531 6, 0.719 0, 0.681 3 and 0.521 3 for wool fineness at one week and two week of age, wool fineness at one week and three week of age, staple length and fleece weight at one week of age, staple length at one week and three week of age, fleece weight at one week of age and wool fineness at three week of age, wool fineness at two week and three week of age, wool fineness at two week of age and fleece weight at three week of age, and fleece weight at two week and three week of age, respectively. The high genetic correlations were extremely significant （ P 〈0. O1 ） for the eight pairs of traits. The phenotypic correlations were generally lower than the genetic correlations.
文摘This study provides information on fleece characteristics for stakeholders in a wool trade to make sheep farming more viable and profitable for farmers. Wool fiber samples were taken from four sheep body parts of the 95 sheep. Tests were conducted to analyze the fiber diameter,length,color,and strength. Correspondingly,fiber surface morphology and the medullated fibers were also analyzed and the results were reported. The fiber characteristics from the shoulder and flank were better than those shorn from back and belly/legs. From the results, the values of the measured parameters suggest potential for improvement of economical qualities and in fostering the economic and industrial development
基金supported by Key Projected Supported by Ministry of National Science and Technology and Agricultural Science and Technology Achievement Reformer Fund projects (04EFN211500036)
文摘Objective] This study aimed to estimate the heritability of Aohan fine-wool sheep＇s main economic characters. [ Method] Half-sib correlation in sire method was adopted to estimate Aohan file-wool sheep＇s Birth Weight（BW）, Weaning Litter Weight （WLW）, Weaning Litter Staple Fineness（WLSF）, One-age Staple Fineness（OASF）, One-age Staple Length （ OASL）, One-age Wool Yield（OAWY）, Main Economic Characters of One-age Aohan fine-wool sheep, Two-age Staple Fineness （TASF）, Two-age Staple Length （TASL）, Two-age Wool Yield （TAWY）, Two-age Weight （TAW） after cropping. [ Result] The heritability was 0.1 -0.7. [ Conclusion~ The heritability of Aohan fine-wool sheep＇s main characters was middle-and-high.
基金Supported by the Project of the Ministry of Agriculture and the Ministry of Finance(CARS-40-20)
文摘Based on the data from the survey of cashmere-goat and wool-sheep in 12 demonstration counties of China's main producing areas in 2012,the development of farming professional cooperatives of cashmere-goat and wool-sheep was analyzed from aspects of status quo,problems and causes,and some suggestions about cooperation cognition and mode,service capacity,personnel training,system improvement and preferential policies were put forward to promote the development of the farming professional cooperatives.
基金Supported by"Industrial Economic Research of National Cashmere Goat Industrial Technological System"of the Ministry of Agriculture and the Ministryof Finance(CARS-40-20)Young Scholar Project of National Social Science Foundation"Tracing of Social Performance of China's Agricultural Subsidies at the Background of Sustainable Development"(CJY061)
文摘Grassland ecological protection measures such as grazing prohibition and livestock changed traditional production mode of the cashmere goat industry,and exerted adverse influence on production of cashmere and income of farmers and herdsmen.On the basis of the survey in Inner Mongolia,Xinjiang,Jilin,Liaoning,Shanxi,and Yunnan,this paper evaluated effect of subsidy policies on wool sheep and cashmere goat industry and present some existing problems in the implementation of these policies.Finally,it came up with following recommendations:strengthening cultivation and protection of wool sheep and cashmere goat varieties,increasing subsidy level of fine varieties and expanding coverage of subsidy policies,formulating wool sheep and cashmere price supportive measures,enhancing construction of wool sheep and cashmere goat sci-tech service system,and promoted standardized production of cashmere goat.
文摘Evaluation and grading of wool based on sex and age can help to improve economic value of wool. This study was conducted to investigate the wool production and fleece characteristics of Arabi sheep in Khuzestan province The right mid-side wool samples were taken from 90 Arabi sheep (1 - 4 years;16 male and 74 female) by hand shearing. The staple length of shoulder, flank and rump were 13.18 ± 0.27, 13.31 ± 0.22 and 14.27 ± 0.25 cm, respectively. The greasy fleece weight, wool wax, vegetable matter, yield percentage, fiber diameter and its coefficient variation measures were 1.72 ± 0.06 Kg;2.77% ± 0.12%;0.54% ± 0.07%;73.36% ± 0.68%;30 ± 0.41 μm;30.23% ± 0.3% respectively. Correspondingly, the medulated fibers, true wool fiber and Kemp fibers were 21.6% ± 1.9%, 76.1% ± 2.04% and 2.5% ± 0.57% respectively. Age and sex had a significant influence on staple lengths. Fleece weight (P < 0.01) and wool wax were (P < 0.05) affected by sex. There was no significant interaction between age and sex groups for fiber characteristics, but it was important for staple between body location (P < 0.05). There were a low considerable kemp and CV of wool diameter percentage on Arabi sheep in comparison with the other Iranian native sheep. The wide variation in fleece weight (0.8 - 3.9 kg);mean staple lengths (8.8 - 19.2 cm);medulated and kemp (0 - 84.04 and 0% - 30.22%);fiber diameter (24.9 - 37.43 μm) suggest potential for improvement of economical traits.
文摘为了筛选影响发情卵巢发育的关键蛋白,解析彭波半细毛羊繁殖的调控机制,该研究采用TMT(tandem mass tags)蛋白质组学技术对不同发情状态彭波半细毛羊的卵巢进行蛋白质组测序,通过比较分析彭波半细毛羊发情和乏情卵巢蛋白组数据共筛选出307个差异表达蛋白,其中下调的差异蛋白为249个(P<0.05),上调的差异蛋白为58个(P<0.05)。这些差异蛋白涉及多种GO分类及KEGG通路。其中GO分类注释显示,差异蛋白与谷胱甘肽转移酶活性,酰基辅酶A脱氢酶活性和磷脂酰肌醇结合等分子功能通路存在密切关联。KEGG通路分析显示,剪切体通路富集水平最高,其中包括SF3A2、PRPF19、BUD31等剪切体通路上的蛋白在细胞生长和分化、凋亡等生物过程中发挥重要作用。同时也发现补体和凝血级联、谷胱甘肽代谢以及细胞色素P450相关通路也表现出显著富集。这些结果为进一步阐明彭波半细毛羊发情和乏情卵巢组织的生理功能变化提供了基础,同时也为全面了解彭波半细毛羊发情规律提供新的参考。
