%0 Journal Article %T 不同NFC/NDF水平饲粮对肉公犊牛生长性能和屠宰性能的影响<br>Effects of diets with different NFC/NDF levels on the growth performance and slaughter performance of meat calves %A 李岚捷 %A 王安思 %A 廉红霞 %A 付彤 %A 王之宝 %A 刁其玉 %A 屠焰 %A 成述儒 %J 中国农业大学学报（自然科学中文版) %D 2017 %X 为研究非纤维性碳水化合物/中性洗涤纤维（NFC/NDF）水平对夏杂公犊牛生长性能、屠宰性能和肉品质的影响，选取2~3月龄健康、平均体重为（94.38±0.25）kg的夏杂断奶公犊60头，随机分为4组，每组15头。分别饲喂粗蛋白质水平相近，NFC/NDF为1.35（A组）、1.23（B组）、0.94（C组）和0.80（D组）的4种全混合饲粮。试验期105 d，其中预试期15 d，正试期90 d。每天记录每头犊牛的采食量，在试验开始和结束时分别测定每头犊牛的体重、体尺；试验结束时每组随机选取6头犊牛进行屠宰试验，测定屠宰性能、器官鲜重和肉品质。结果表明：1）饲粮NFC/NDF水平对犊牛平均日增重和体斜长的增长率有显著影响（P<0.05），A组高于其他各组；2）犊牛采食A组饲粮后胴体重达到111.40 kg，显著高于C组和D组（P<0.05），但对屠宰率和净肉率均无显著影响（P>0.05）；3）采食A组饲粮的犊牛肝脏和脾脏分别为3.25和0.70 kg，显著高于其他3组（P<0.05），且脾脏指数有随饲粮NFC/NDF水平降低而降低的趋势，对其他器官重量及指数均无显著影响（P>0.05）。综上所述，NFC/NDF为1.35组的饲粮可提高犊牛生长性能，更能满足3~6月龄肉公犊牛生长需要。<br>This study aimed to investigate the effects of diets with non-fiber carbohydrate (NFC)/neutral detergent fiber (NDF) levels on the growth performance,slaughter performance and meat quality of male calves.Sixty 2-3 month-old healthy weaned male calves were randomly divided into four groups with fifteen calves in each group,and were fed with four different NFC/NDF ratio diets:1.35 (A group),1.23 (B group),0.94 (C group),0.80 (D group),respectively.The experiments lasted for 105 d,with 15 d of adaptation period and 90 d of formal period.Feed intake of each calf was recorded every day,body weight and body measurements were measured.A total of 6 calves were randomly selected from each group and were slaughtered to determine slaughter performance,meat quality and organ fresh weight.The results showed that:1) Average daily gain and body length growth rate of calves in A group were greater than those in other groups (P<0.05);2) The calves feeding A group diet body weight is 111.40 kg is significantly higher than group C and group D (P<0.05),but no difference was observed in the slaughter rate and pure meat percentage (P>0.05);3) Weight of liver and spleen were 3.25 and 0.70 kg in A group diet,which were significantly higher than those in rest three groups (P<0.05).Meanwhile,the spleen index displayed decreasing tendency with the decreasing of the dietary NFC/NDF level and there were no significant effects on the weight and index of other organs (P>0.05).In conclusion,the growth performance of calves was improved when the ratio of NFC to NDF is 1.35,which could meet the nutrient requirement of male calves aged from 3 to 6 months old. %K 肉犊牛 非纤维性碳水化合物/中性洗涤纤维 生长性能 屠宰性能 肉品质< %K br> %K meat calves non-fiber carbohydrate/neutral detergent fiber growth properties slaughter performance meat quality %U http://zgnydxxb.ijournals.cn/zgnydxxb/ch/reader/view_abstract.aspx?file_no=20171212&flag=1