试验旨在研究不同比例张杂谷秸秆替代花生秧对育肥羊生长性能、养分表观消化率、肉品质及血清生化指标的影响.选取3月龄左右、体重(32.73±2.46)kg、健康的"杜×湖"杂交F1代育肥公羊24只,随机分为3组,每组8个重复,每个重复1只羊.对照组只添加花生秧;试验Ⅰ组为50％张杂谷秸秆替代花生秧;试验Ⅱ组为80％张杂谷秸秆替代花生秧.预试期10 d,正式试验期70 d.结果显示,与对照组相比,试验Ⅰ组平均日采食量显著降低(P＜0.05),试验Ⅰ组中性洗涤纤维表观消化率显著升高(P＜0.05).与对照组相比,试验Ⅰ组肉色L*值显著升高(P＜0.05),剪切力显著降低(P＜0.05);试验Ⅱ组的pH45 min值显著升高(P＜0.05),剪切力显著降低(P＜0.05).试验Ⅱ组肉色L*值显著低于试验Ⅰ组(P＜0.05).与对照组相比,试验Ⅰ组总蛋白(TP)、谷丙转氨酶(ALT)及胆固醇(CHOL)水平显著升高(P＜0.05);试验Ⅱ组TP含量显著升高(P＜0.05).研究表明,张杂谷秸秆替代花生秧对育肥羊生长性能、养分表观消化率、肉品质及血清生化指标产生一定影响,其中50％的张杂谷秸秆替代花生秧增重效果最佳.
The purpose of this experiment was to study the effects of different proportions of Zhangzagu straw instead of peanut vine on the growth performance,nutrients apparent digestibility,meat quality,and serum biochemical indexes of finishing sheep.Twenty-four healthy'Du × Hu'hybrid finishing rams with the body weight of(32.73± 2.46)kg aged about three months were randomly divided into three groups,with eight replicates in each group and one sheep in each replicate.The control group only added peanut vine.In the experimental Group Ⅰ,50％Zhangzagu straw was used to replace peanut vine.In the experimental Group Ⅱ,80％Zhangzagu straw was used to replace peanut vine.The pre-feeding period was 10 days,and the formal trial period was 70 days.The results showed that compared with the control group,the average daily feed intake of Group Ⅰ decreased significantly(P＜0.05),and the apparent digestibility of neutral detergent fiber increased significantly(P＜0.05).Compared with the control group,the L*value of flesh color in Group Ⅰ significantly increased(P＜0.05)and the shear force significantly decreased(P＜0.05),the pH45 min value in Group Ⅱ significantly increased(P＜0.05)and the shear force value significantly decreased(P＜0.05),while the L*value of flesh color in Group Ⅱ was significantly lower than that of Group Ⅰ(P＜0.05).Compared with the control group,the levels of total protein(TP),alanine aminotransferase(ALT),and cholesterol(CHOL)were significantly increased in Group Ⅰ(P＜0.05),and the TP content in Group Ⅱincreased significantly(P＜0.05).The study indicates that replacing peanut vine with Zhangzagu straw has certain effects on the growth performance,nutrients apparent digestibility,meat quality,and serum biochemical indexes of finishing sheep,and 50％Zhangzagu straw instead of peanut vine has the best weight gain effect.
王浩程;刘宏凯;李金发;王佳宁;王少华;岳春旺;孙茂红
河北北方学院动物科技学院,河北省张家口 075132
畜牧业
张杂谷秸秆;花生秧;育肥羊;生长性能;养分表观消化率;肉品质;血清生化指标
Zhangzagu straw;peanut vine;finishing sheep;growth performance;nutrients apparent digestibility;meat quality;serum biochemical indexes
《饲料研究》 2024 (009)
18-22 / 5
河北省三期现代农业产业技术体系肉牛创新团队饲料资源开发和绿色养殖岗位(项目编号:HBCT2023190203);河北省教育厅青年基金项目(项目编号:QN2017305)
10.13557/j.cnki.issn1002-2813.2024.09.004
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