[Objectives] This study was conducted to investigate the effect of mixed silage of mulberry branches and leaves on the production performance of Tan Han hybrid mutton sheep and explore the feasibility in production. [...[Objectives] This study was conducted to investigate the effect of mixed silage of mulberry branches and leaves on the production performance of Tan Han hybrid mutton sheep and explore the feasibility in production. [Methods] Twenty-six Tan Han hybrid mutton sheep were selected and divided into two groups, 13 in each group. The experimental group was fed with the mixed silage and the control group(CK) was fed with whole-plant corn silage. [Results] The average daily weight gain per sheep of the experimental group was 9.2% higher than that of the CK(P<0.05), and the feed conversion ratio was decreased by 6.98%(P<0.05). The average daily weight gain per sheep in the 30 d improved the gross profit by 7.75 yuan, which meant an increase of 16.32%. [Conclusions] The mulberry mixed silage is feasible in the production, and it could significantly improve the production performance of the hybrid mutton sheep.展开更多
Embryo cryopreservation is an important part of embryo biotechnology.It plays a key role in the development of quality animal husbandry.However,the effect of in-vivo(in-vitro)embryo freezing of cattle and sheep in Chi...Embryo cryopreservation is an important part of embryo biotechnology.It plays a key role in the development of quality animal husbandry.However,the effect of in-vivo(in-vitro)embryo freezing of cattle and sheep in China has not reached an expected level,which limits the commercial application of embryo transfer technology.The technical bottleneck that needs to be broken through is that embryos are subject to mechanical damage and protective agent toxicity during freezing and thawing.This paper summarized the successful application of plant antifreeze protein in vitrification preservation of pig embryos,which makes this technology widely used in animal husbandry production,and is of great significance in accelerating the large-scale breeding of improved livestock and saving endangered animals.展开更多
Chestnut leaves and bran were evenly mixed according to different mass ratios,and the mixtures were sprayed and inoculated with a certain amount of prepared EM microbial liquid,and then compressed into 70 cm×40 c...Chestnut leaves and bran were evenly mixed according to different mass ratios,and the mixtures were sprayed and inoculated with a certain amount of prepared EM microbial liquid,and then compressed into 70 cm×40 cm×30 cm blocks by a fully automatic yellow-storage block compression and packaging machine.The obtained blocks were packaged and sealed with plastic film,and placed in a freely ventilated place for more than 15 d of anaerobic fermentation,so as to obtain compressed fermented chestnut leaf block feed.[Results]Through the detection and analysis of nutritional components in the compressed fermented chestnut leaf block feed in the laboratory,the protein content was equal to or greater than 10.2%,which was 44.68%higher than that of unfermented chestnut leaf feed;the tannin content was equal to or greater than 638 mg/kg,which was 18.41%lower than that of the original feed;and the crude fiber content was equal to or greater than 19.5%,which was 14.09%lower than that of the original feed.[Conclusions]This study improves the palatability of chestnut leaf feed,increases the use efficiency of feed and reduces feeding cost.It is worth popularizing.展开更多
试验旨在采用Meta分析方法系统评价复合益生菌发酵饲料对肉羊肉品质的影响。基于PICO检索策略,检索2013—2023年在中国知网、万方、维普及Web of Science数据库中发表关于复合益生菌发酵饲料影响肉羊肉品质的相关文献,运用Review Manage...试验旨在采用Meta分析方法系统评价复合益生菌发酵饲料对肉羊肉品质的影响。基于PICO检索策略,检索2013—2023年在中国知网、万方、维普及Web of Science数据库中发表关于复合益生菌发酵饲料影响肉羊肉品质的相关文献,运用Review Manager 5.4软件对提取数据进行Meta分析,综合评价复合益生菌发酵饲料对肉羊多项肉品质指标的影响。结果显示,在基础饲粮中添加复合益生菌发酵饲料可以显著提高肌肉红度(a^(*)值)[P<0.05,标准化均数差(SMD)=0.21,95%置信区间(CI):0.01~0.59],显著降低黄度(b^(*)值)(P<0.05,SMD=-0.33,95%CI:-0.56~0.62),但对亮度(L^(*)值)无显著影响(P>0.05,SMD=0.28,95%CI:0.14~0.47)。在氨基酸组成方面,复合益生菌发酵饲料可以显著提高苯丙氨酸(P<0.05,SMD=0.59,95%CI:-0.88~2.65)和谷氨酸(P<0.05,SMD=1.29,95%CI:0.62~1.97)含量,而对天冬氨酸含量无显著影响(P>0.05,SMD=1.27,95%CI:-0.16~1.63)。复合益生菌发酵饲料可以显著提高肌肉中粗蛋白(P<0.05,SMD=-0.38,95%CI:-1.82~0.21)和粗脂肪(P<0.05,SMD=0.02,95%CI:-0.47~0.88)含量,但对粗灰分含量无显著影响(P>0.05,SMD=-0.14,95%CI:-0.37~0.60)。研究表明,在基础饲粮中添加复合益生菌发酵饲料有助于改善肉羊肉品质,试验结果可为复合益生菌发酵饲料在肉羊生产中的应用提供参考。展开更多
基金Supported by Ningxia Key R&D Program(2019BBF02016)Special Fund for Agricultural Science and Technology Independent Innovation of Ningxia Academy of Agriculture and Forestry Sciences
文摘[Objectives] This study was conducted to investigate the effect of mixed silage of mulberry branches and leaves on the production performance of Tan Han hybrid mutton sheep and explore the feasibility in production. [Methods] Twenty-six Tan Han hybrid mutton sheep were selected and divided into two groups, 13 in each group. The experimental group was fed with the mixed silage and the control group(CK) was fed with whole-plant corn silage. [Results] The average daily weight gain per sheep of the experimental group was 9.2% higher than that of the CK(P<0.05), and the feed conversion ratio was decreased by 6.98%(P<0.05). The average daily weight gain per sheep in the 30 d improved the gross profit by 7.75 yuan, which meant an increase of 16.32%. [Conclusions] The mulberry mixed silage is feasible in the production, and it could significantly improve the production performance of the hybrid mutton sheep.
基金Supported by Key Project of Qiqihar Science and Technology Program(ZDTG-202201)Qiqihar Innovation Incentive Project(CNGG-2021015)。
文摘Embryo cryopreservation is an important part of embryo biotechnology.It plays a key role in the development of quality animal husbandry.However,the effect of in-vivo(in-vitro)embryo freezing of cattle and sheep in China has not reached an expected level,which limits the commercial application of embryo transfer technology.The technical bottleneck that needs to be broken through is that embryos are subject to mechanical damage and protective agent toxicity during freezing and thawing.This paper summarized the successful application of plant antifreeze protein in vitrification preservation of pig embryos,which makes this technology widely used in animal husbandry production,and is of great significance in accelerating the large-scale breeding of improved livestock and saving endangered animals.
基金Supported by The Fourth Batch of High-end Talent Project in Hebei ProvinceCentral Government-guided Local Science and Technology Development Project(226Z5504G)+1 种基金Tangshan Talent Funding Project(A202202005)Agricultural Science and Technology Achievement Promotion Project of Hebei Province(JNK 24083).
文摘Chestnut leaves and bran were evenly mixed according to different mass ratios,and the mixtures were sprayed and inoculated with a certain amount of prepared EM microbial liquid,and then compressed into 70 cm×40 cm×30 cm blocks by a fully automatic yellow-storage block compression and packaging machine.The obtained blocks were packaged and sealed with plastic film,and placed in a freely ventilated place for more than 15 d of anaerobic fermentation,so as to obtain compressed fermented chestnut leaf block feed.[Results]Through the detection and analysis of nutritional components in the compressed fermented chestnut leaf block feed in the laboratory,the protein content was equal to or greater than 10.2%,which was 44.68%higher than that of unfermented chestnut leaf feed;the tannin content was equal to or greater than 638 mg/kg,which was 18.41%lower than that of the original feed;and the crude fiber content was equal to or greater than 19.5%,which was 14.09%lower than that of the original feed.[Conclusions]This study improves the palatability of chestnut leaf feed,increases the use efficiency of feed and reduces feeding cost.It is worth popularizing.
文摘试验旨在采用Meta分析方法系统评价复合益生菌发酵饲料对肉羊肉品质的影响。基于PICO检索策略,检索2013—2023年在中国知网、万方、维普及Web of Science数据库中发表关于复合益生菌发酵饲料影响肉羊肉品质的相关文献,运用Review Manager 5.4软件对提取数据进行Meta分析,综合评价复合益生菌发酵饲料对肉羊多项肉品质指标的影响。结果显示,在基础饲粮中添加复合益生菌发酵饲料可以显著提高肌肉红度(a^(*)值)[P<0.05,标准化均数差(SMD)=0.21,95%置信区间(CI):0.01~0.59],显著降低黄度(b^(*)值)(P<0.05,SMD=-0.33,95%CI:-0.56~0.62),但对亮度(L^(*)值)无显著影响(P>0.05,SMD=0.28,95%CI:0.14~0.47)。在氨基酸组成方面,复合益生菌发酵饲料可以显著提高苯丙氨酸(P<0.05,SMD=0.59,95%CI:-0.88~2.65)和谷氨酸(P<0.05,SMD=1.29,95%CI:0.62~1.97)含量,而对天冬氨酸含量无显著影响(P>0.05,SMD=1.27,95%CI:-0.16~1.63)。复合益生菌发酵饲料可以显著提高肌肉中粗蛋白(P<0.05,SMD=-0.38,95%CI:-1.82~0.21)和粗脂肪(P<0.05,SMD=0.02,95%CI:-0.47~0.88)含量,但对粗灰分含量无显著影响(P>0.05,SMD=-0.14,95%CI:-0.37~0.60)。研究表明,在基础饲粮中添加复合益生菌发酵饲料有助于改善肉羊肉品质,试验结果可为复合益生菌发酵饲料在肉羊生产中的应用提供参考。
