作 者：
李岚捷;王安思;廉红霞;付彤;王之宝;刁其玉;屠焰;成述儒
单 位：
甘肃农业大学动物科学技术学院;河南农业大学牧医工程学院
关键词：
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
摘 要：
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105d,其中预试期15d,正试期90d。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111.40kg,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0.70kg,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。
译 名：
Effects of diets with different NFC/NDF levels on the growth performance and slaughter performance of meat calves
作 者：
LI Lanjie;WANG Ansi;LIAN Hongxia;FU Tong;WANG Zhibao;DIAO Qiyu;TU Yan;CHENG Shuru;College of Animal Science and Technology,Gansu Agricultural University;Feed Research Institute/Key Laboratory of Feed Biotechnology of Ministry of Agriculture,Chinese Academy of Agricultural Sciences;College of Animal Husbandry and Veterinary Science,Henan Agricultural University;Xianan Cattle Research and Extension Center of Biyang County;
单 位：
College of Animal Science and Technology,Gansu Agricultural University%Feed Research Institute/Key Laboratory of Feed Biotechnology of Ministry of Agriculture,Chinese Academy of Agricultural Sciences%College of Animal Husbandry and Veterinary Science,Henan Agricultural University%Xianan Cattle Research and Extension Center of Biyang County
关键词：
meat calves;;non-fiber carbohydrate/neutral detergent fiber;;growth properties;;slaughter performance;;meat quality
摘 要：
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 dof adaptation period and 90 dof 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.Theresults 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.
