中国草食动物科学2025，Vol.45Issue(4)：37-44,8.DOI:10.3969/j.issn.2095-3887.2025.00.022
黄芪药渣与全株玉米混合青贮对湖羊生长性能、屠宰性能及肉品质的影响
Effect of Mixed Silage Feed of Astragalus Bunge Residue and Whole-crop Corn on Growth Performance,Slaughtering Performance and Meat Quality in Hu Sheep
摘要
Abstract
This study aimed to assess the effects of mixed silage diet with Astragalus Bunge residue and whole-crop corn on growth performance,slaughter performance,visceral organ development and meat quality of 60-day-old Hu sheep.Sixty ram lambs with similar genetic backgrounds and body weights were randomly assigned to 4 groups(I,II,III,IV),each group consisted of 5 repetitions,with 3 sheep per repetition.The 4 groups were fed mixed silage of As-tragalus Bunge residue and whole-crop corn at ratios of 0:100,5:95,10:90 and 15:85,respectively.The ratio of con-centrate to roughage in the dietary was 50:50(dry matter basis).Pre-experiment period was 7 days,followed by a 90-day experimental period.One sheep per replicate in each group was selected at the end of the experiment,and a total of 20 sheep were slaughtered.The results showed that feeding mixed silage showed a tendency to increase the feed intake of Hu sheep.Group II had the highest daily weight gain,significantly higher than the other groups(P<0.05),while groups III and IV had significantly higher daily weight gain than group I(P<0.05).The feed to weight ratio of groupⅡwas the lowest,significantly lower than group I(P<0.05),while there were no significant differences among the other groups(P>0.05).Feeding mixed silage could significantly increase the live weight before slaughter,carcass weight,GR value,and eye muscle area of Hu sheep(P<0.05),with group II exhibiting the greatest improvement.Regarding slaugh-ter rate,group IV showed significantly higher value than group I(P<0.05),while no significant differences were ob-served among other groups(P>0.05).Feeding mixed silage could promote the development of liver,spleen,lung,testis,omasum and abomasum of Hu sheep.The yellowness(b*)of mutton in group IV was significantly higher than that in group II(P<0.05),while no significant differences were observed in meat color indexes among other groups(P>0.05).Feeding mixed silage could significantly increase the water loss rate of mutton(P<0.05),but had no significant effects on pH,shear force and cooked meat rate(P>0.05).In summary,under this experimental conditions,feeding mixed si-lage with Astragalus Bunge residue and whole-crop corn could improve the growth performance and slaughter perfor-mance of Hu sheep,promote the development of their organs,and the optimal ratio for mixing silage was 5:95.关键词
黄芪药渣/全株玉米/混合青贮/湖羊/生长性能/屠宰性能/器官发育/肉品质Key words
Astragalus Bunge residue/whole-crop corn/mixed silage/Hu sheep/growth performance/slaughter perfor-mance/visceral organ development/meat quality分类
农业科技引用本文复制引用
金丽娜,蒋苏苏,何建文,敬淑燕,张慧君..黄芪药渣与全株玉米混合青贮对湖羊生长性能、屠宰性能及肉品质的影响[J].中国草食动物科学,2025,45(4):37-44,8.基金项目
现代丝路寒旱农业发展项目(GNKJ-2020-34) （GNKJ-2020-34）
