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| 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 |
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李岚捷1,2, 王安思3, 廉红霞3, 付彤3, 王之宝4, 刁其玉2, 屠焰2, 成述儒1
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| (1.甘肃农业大学 动物科学技术学院, 兰州 730070;2.中国农业科学院 饲料研究所/农业部饲料生物技术重点试验室, 北京 100081;3.河南农业大学 牧医工程学院, 郑州 450002;4.泌阳县夏南牛研究推广中心, 河南 驻马店 463720) |
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| 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。 |
| 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 |
| DOI：10.11841/j.issn.1007-4333.2017.12.12 |
| 投稿时间：2016-11-14 |
| 基金项目:公益性行业科技项目（201303143）；河南省科技开放合作项目（152106000029）；河南省现代农业产业技术体系建设专项资金（Z-2013-08-01） |
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| Effects of diets with different NFC/NDF levels on the growth performance and slaughter performance of meat calves |
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LI Lanjie1,2, WANG Ansi3, LIAN Hongxia3, FU Tong3, WANG Zhibao4, DIAO Qiyu2, TU Yan2, CHENG Shuru1
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| (1.College of Animal Science and Technology, Gansu Agricultural University, Lanzhou 730070, China;2.Feed Research Institute/Key Laboratory of Feed Biotechnology of Ministry of Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China;3.College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou 450002, China;4.Xianan Cattle Research and Extension Center of Biyang County, Zhumadian 463720, China) |
| Abstract: |
| 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. |
| Key words: meat calves non-fiber carbohydrate/neutral detergent fiber growth properties slaughter performance meat quality |
