[Objective]The paper was to investigate the effects of substituting corn pellets with potato residue on the growth performance,rumen fermentation indicators and economic benefits of Xinjiang Brown cattle.[Method]A tot...[Objective]The paper was to investigate the effects of substituting corn pellets with potato residue on the growth performance,rumen fermentation indicators and economic benefits of Xinjiang Brown cattle.[Method]A total of 80 Xinjiang Brown cattle,each 22 months old and with a similar body weight of(250±15)kg,were randomly assigned to four groups,with 20 cattle in each group,utilizing a single-factor experimental design.The total mixed diets for the experimental groups Ⅰ,Ⅱ,and Ⅲ were formulated by substituting corn pellets with 2.00%,4.00%,and 6.00%potato residue,respectively,while the diet in the control group was not substituted with potato residue.The duration of the test was 100 d,which comprised a pre-test period of 10 d and a formal test period of 90 d.During the test period,the average dry matter intake,average daily weight gain and feed-gain ratio were assessed at 30-day intervals,and body size indicators were measured on days 0 and 90.Rumen fluid samples were collected from the oral cavity on days 0,30,60,and 90 to assess rumen fermentation parameters.Additionally,jugular blood samples were obtained during the fasting period,and serum was separated for the analysis of total protein mass concentration,urea nitrogen,and glucose concentration.Furthermore,the economic benefits accrued during the test period were calculated.[Result]The dry matter intake in experimental group Ⅰ was significantly higher than that in the control group from days 31 to 60(P<0.05).In contrast,the differences in dry matter intake between experimental groups Ⅱ and Ⅲ and the control group were not statistically significant(P>0.05).From days 61 to 90,the dry matter intake in experimental group Ⅰ remained significantly higher than that in the other groups(P<0.05).Throughout the entire experimental period,the average daily weight gain observed in experimental group Ⅰ was significantly greater than that recorded in the other groups(P<0.05).Additionally,the total weight gain over the entire period was significantly higher than that of experimental group Ⅱ(P<0.05)and markedly higher than that of both the control group and experimental group Ⅲ(P<0.01).The feed-gain ratio in experimental group Ⅰ was significantly lower than that in experimental group Ⅱ(P<0.05).There were no statisticaly significant differences observed in body height,slope length,thoracic circumference,abdominal circumference,rumen pH,acetic acid,propionic acid,butyric acid,valeric acid,total volatile fatty acids,and ammoniacal nitrogen mass concentration among the groups(P>0.05).On the 90th day of the experiment,the serum urea nitrogen concentration in beef cattle from experimental groups Ⅰ and Ⅱ was significantly lower than that in the control group and experimental group Ⅲ(P<0.05).Additionally,the profit margins in experimental groups Ⅰ,Ⅱ,and Ⅲ were higher than those in the control group,and the profit margin in experimental group Ⅰ was the highest.[Conclusion]The substitution of corn pellets with potato residue has the potential to enhance the average daily weight gain and total weight gain throughout the entire period in beef cattle,while simultaneously reducing the feed-gain ratio.However,this substitution does not appear to have a significant impact on body size indicators,rumen fermentation parameters,or the concentrations of serum total protein and glucose in beef cattle.Furthermore,this approach may yield improved breeding profitability,with a recommended substitution ratio of 2.00%based on the conditions of this experiment.展开更多
Potato residue is the residual industrial residue in the process of potato starch production. It contains many functional substances and active ingredients. Dietary fiber is a kind of nutritional component in potato d...Potato residue is the residual industrial residue in the process of potato starch production. It contains many functional substances and active ingredients. Dietary fiber is a kind of nutritional component in potato dregs and its extraction technology and development and utilization have high research value. Based on the research status of domestic dietary fiber extraction technology, this paper summarized the application of several extraction technologies in the extraction of dietary fiber from potato residue, analyzed the influence of different methods and conditions on the extraction of dietary fiber, and made a prospect for the research and utilization of dietary fiber from potato residue and product development.展开更多
This study aimed to investigate the effects of different proportions of dietary fermented sweet potato residue(FSPR)supplementation as a substitute for corn on the nutrient digestibility,meat quality,and intestinal mi...This study aimed to investigate the effects of different proportions of dietary fermented sweet potato residue(FSPR)supplementation as a substitute for corn on the nutrient digestibility,meat quality,and intestinal microbes of yellow-feathered broilers.Experiment 1(force-feeding)evaluated the nutrient composition and digestibility of mixtures with different proportions of sweet potato residue(70%,80%,90%,and 100%)before and after fermentation.In Experiment 2(metabolic growth),a total of 420 one-day-old yellow-feathered broilers were randomly allocated to 4 groups and fed corn-soybean meal-based diets with 0,5%,8%,and 10%FSPR as a substitute for corn.The force-feeding and metabolic growth experiments were performed for 9 and 70 d,respectively.The treatment of 70%sweet potato residue(after fermentation)had the highest levels of crude protein,ether extract,and crude fiber and improved the digestibility of crude protein and amino acids(P<0.05).Although dietary FSPR supplementation at different levels had no significant effect on growth performance and intestinal morphology,it improved slaughter rate,half-chamber rate,full clearance rate,and meat color,as well as reduced cooking loss in the breast and thigh muscles(P<0.05).Dietary supplementation with 8%and 10%FSPR increased the serum immunoglobulin M and immunoglobulin G levels in broilers(P<0.05).Furthermore,10%FSPR increased the Shannon index and Ruminococcaceae_UCG-014,Ruminococcaceae_UCG-010 and Romboutsia abundances and decreased Sutterella and Megamonas abundances(P<0.05).Spearman's correlation analysis showed that meat color was positively correlated with Ruminococcaceae_UCG-014(P<0.05)and negatively correlated with Megamonas(P<0.05).Collectively,70%sweet potato residue(after fermen-tation)had the best nutritional value and nutrient digestibility.Dietary supplementation with 8%to 10%FSPR as a substitute for corn can improve the slaughter performance,meat quality,and intestinal microbe profiles of broilers.Our findings suggest that FSPR has the potential to be used as a substitute for corn-soybean meals to improve the meat quality and intestinal health of broilers.展开更多
In this study, the proximate composition, mineral content and amino acid composition of starch processing residues from 10 cultivars of sweet potato and 10 cultivars of potato were determined, and the nutritional and ...In this study, the proximate composition, mineral content and amino acid composition of starch processing residues from 10 cultivars of sweet potato and 10 cultivars of potato were determined, and the nutritional and health-related values of these residues were investigated. The residual flours contained 20.63-31.48 g and 17.14-28.57 g rich dietary fiber per 100 g dry weight for sweet potato and potato, respectively, as well as mineral elements, including potassium, ferrum, zinc and copper. The highest limiting amino acid score （AAS） of the almost balanced amino acid composition were observed to be 71.07 and 57.96 for sweet potato and potato residues, respectively. A grey relational analysis showed that the nutritional values of Jishu 4 at 0.7519 and LT-5 at 0.7281 were the highest among the sweet potato and potato residues, respectively. The evaluation of the sweet potato/potato residues, the by-products of the starch industry, based on recommended daily intake （RDI） standards, indicated that the residues have potential nutritional and health-related food values.展开更多
基金Supported by Natural Science Foundation Key Project of Xinjiang Uygur Autonomous Region(2022D01D10)China Agricultural Industry Research System of Xinjiang Uygur Autonomous Region in 2024(XJARS-12-05)Project of Key Laboratory of Animal Nutrition and Feed of Yili Prefecture.
文摘[Objective]The paper was to investigate the effects of substituting corn pellets with potato residue on the growth performance,rumen fermentation indicators and economic benefits of Xinjiang Brown cattle.[Method]A total of 80 Xinjiang Brown cattle,each 22 months old and with a similar body weight of(250±15)kg,were randomly assigned to four groups,with 20 cattle in each group,utilizing a single-factor experimental design.The total mixed diets for the experimental groups Ⅰ,Ⅱ,and Ⅲ were formulated by substituting corn pellets with 2.00%,4.00%,and 6.00%potato residue,respectively,while the diet in the control group was not substituted with potato residue.The duration of the test was 100 d,which comprised a pre-test period of 10 d and a formal test period of 90 d.During the test period,the average dry matter intake,average daily weight gain and feed-gain ratio were assessed at 30-day intervals,and body size indicators were measured on days 0 and 90.Rumen fluid samples were collected from the oral cavity on days 0,30,60,and 90 to assess rumen fermentation parameters.Additionally,jugular blood samples were obtained during the fasting period,and serum was separated for the analysis of total protein mass concentration,urea nitrogen,and glucose concentration.Furthermore,the economic benefits accrued during the test period were calculated.[Result]The dry matter intake in experimental group Ⅰ was significantly higher than that in the control group from days 31 to 60(P<0.05).In contrast,the differences in dry matter intake between experimental groups Ⅱ and Ⅲ and the control group were not statistically significant(P>0.05).From days 61 to 90,the dry matter intake in experimental group Ⅰ remained significantly higher than that in the other groups(P<0.05).Throughout the entire experimental period,the average daily weight gain observed in experimental group Ⅰ was significantly greater than that recorded in the other groups(P<0.05).Additionally,the total weight gain over the entire period was significantly higher than that of experimental group Ⅱ(P<0.05)and markedly higher than that of both the control group and experimental group Ⅲ(P<0.01).The feed-gain ratio in experimental group Ⅰ was significantly lower than that in experimental group Ⅱ(P<0.05).There were no statisticaly significant differences observed in body height,slope length,thoracic circumference,abdominal circumference,rumen pH,acetic acid,propionic acid,butyric acid,valeric acid,total volatile fatty acids,and ammoniacal nitrogen mass concentration among the groups(P>0.05).On the 90th day of the experiment,the serum urea nitrogen concentration in beef cattle from experimental groups Ⅰ and Ⅱ was significantly lower than that in the control group and experimental group Ⅲ(P<0.05).Additionally,the profit margins in experimental groups Ⅰ,Ⅱ,and Ⅲ were higher than those in the control group,and the profit margin in experimental group Ⅰ was the highest.[Conclusion]The substitution of corn pellets with potato residue has the potential to enhance the average daily weight gain and total weight gain throughout the entire period in beef cattle,while simultaneously reducing the feed-gain ratio.However,this substitution does not appear to have a significant impact on body size indicators,rumen fermentation parameters,or the concentrations of serum total protein and glucose in beef cattle.Furthermore,this approach may yield improved breeding profitability,with a recommended substitution ratio of 2.00%based on the conditions of this experiment.
文摘Potato residue is the residual industrial residue in the process of potato starch production. It contains many functional substances and active ingredients. Dietary fiber is a kind of nutritional component in potato dregs and its extraction technology and development and utilization have high research value. Based on the research status of domestic dietary fiber extraction technology, this paper summarized the application of several extraction technologies in the extraction of dietary fiber from potato residue, analyzed the influence of different methods and conditions on the extraction of dietary fiber, and made a prospect for the research and utilization of dietary fiber from potato residue and product development.
基金supported by R&D Program(2022YFD1300905)Guangxi Natural Science Foundation Project(2022JJA130333)+1 种基金Hunan science and technology innovation lead ing Talent Support Program(2023RC1054)Shandong Province Taishan Industry Leading Talents Project Blue Talents Project,China Agriculture Research System of MOF and MARA(CARS-35).
文摘This study aimed to investigate the effects of different proportions of dietary fermented sweet potato residue(FSPR)supplementation as a substitute for corn on the nutrient digestibility,meat quality,and intestinal microbes of yellow-feathered broilers.Experiment 1(force-feeding)evaluated the nutrient composition and digestibility of mixtures with different proportions of sweet potato residue(70%,80%,90%,and 100%)before and after fermentation.In Experiment 2(metabolic growth),a total of 420 one-day-old yellow-feathered broilers were randomly allocated to 4 groups and fed corn-soybean meal-based diets with 0,5%,8%,and 10%FSPR as a substitute for corn.The force-feeding and metabolic growth experiments were performed for 9 and 70 d,respectively.The treatment of 70%sweet potato residue(after fermentation)had the highest levels of crude protein,ether extract,and crude fiber and improved the digestibility of crude protein and amino acids(P<0.05).Although dietary FSPR supplementation at different levels had no significant effect on growth performance and intestinal morphology,it improved slaughter rate,half-chamber rate,full clearance rate,and meat color,as well as reduced cooking loss in the breast and thigh muscles(P<0.05).Dietary supplementation with 8%and 10%FSPR increased the serum immunoglobulin M and immunoglobulin G levels in broilers(P<0.05).Furthermore,10%FSPR increased the Shannon index and Ruminococcaceae_UCG-014,Ruminococcaceae_UCG-010 and Romboutsia abundances and decreased Sutterella and Megamonas abundances(P<0.05).Spearman's correlation analysis showed that meat color was positively correlated with Ruminococcaceae_UCG-014(P<0.05)and negatively correlated with Megamonas(P<0.05).Collectively,70%sweet potato residue(after fermen-tation)had the best nutritional value and nutrient digestibility.Dietary supplementation with 8%to 10%FSPR as a substitute for corn can improve the slaughter performance,meat quality,and intestinal microbe profiles of broilers.Our findings suggest that FSPR has the potential to be used as a substitute for corn-soybean meals to improve the meat quality and intestinal health of broilers.
基金supported by the National Key Research and Development Program of China(2017YFD0400401)the Public Welfare Industry(Agriculture) Research Project,China(201503001-2)the earmarked foud for the China Agriculture Research System(CARS-10-B21)
文摘In this study, the proximate composition, mineral content and amino acid composition of starch processing residues from 10 cultivars of sweet potato and 10 cultivars of potato were determined, and the nutritional and health-related values of these residues were investigated. The residual flours contained 20.63-31.48 g and 17.14-28.57 g rich dietary fiber per 100 g dry weight for sweet potato and potato, respectively, as well as mineral elements, including potassium, ferrum, zinc and copper. The highest limiting amino acid score （AAS） of the almost balanced amino acid composition were observed to be 71.07 and 57.96 for sweet potato and potato residues, respectively. A grey relational analysis showed that the nutritional values of Jishu 4 at 0.7519 and LT-5 at 0.7281 were the highest among the sweet potato and potato residues, respectively. The evaluation of the sweet potato/potato residues, the by-products of the starch industry, based on recommended daily intake （RDI） standards, indicated that the residues have potential nutritional and health-related food values.
