饲粮全棉籽比例对荷斯坦公牛育肥性能、血清生化指标和养分表观消化率的影响  

Effects of Dietary Whole Cottonseed Ratio on Fattening Performance,Serum Biochemical Parameters and Nutrient Apparent Digestibility of Holstein Bulls

作　　者：王勇胜 曹玉凤[1] 李秋凤[1] 李妍[2] 高艳霞[1] 李建国[1] WANG Yongsheng 1, CAO Yufeng 1, LI Qiufeng 1, LI Yan 2, GAO Yanxia 1 ,LI Jianguo 1(1. College of Animal Science and Technology, Hebei Agricultural University, Baoding 071001,China; 2. College of Veterinary Medicine, Hebei Agricultural University, Baoding 071001, Chin)

机构地区：[1]河北农业大学动物科技学院,保定071001 [2]河北农业大学动物医学院,保定071001

出　　处：《动物营养学报》2018年第5期1965-1972,共8页CHINESE JOURNAL OF ANIMAL NUTRITION

基　　金：国家肉牛牦牛产业技术体系建设项目(CARS-37)

摘　　要：本试验旨在研究饲粮全棉籽比例对荷斯坦公牛育肥性能、血清生化指标和养分表观消化率的影响。选取44头体重[(286±52)kg]相近、健康无疾病的荷斯坦公牛,随机分为4组,每组11头,Ⅰ、Ⅱ、Ⅲ和Ⅳ组分别饲喂含有0、5%、10%和15%全棉籽的饲粮,各组能量和粗蛋白质水平基本相同。预试期为7 d,正试期为90 d。结果表明:1)Ⅳ组平均日增重最高,比Ⅰ组提高了9.80%(P<0.05);Ⅳ组的干物质采食量最高,料重比最低,但各组间差异均不显著(P>0.05)。2)Ⅲ和Ⅳ组的血清胰岛素样生长因子1含量分别比Ⅰ组高4.79%和6.76%(P<0.05);血清中谷丙转氨酶、谷草转氨酶活性及游离脂肪酸和生长激素含量随全棉籽比例提高而有所上升,但组间并没有显著差异(P>0.05)。3)随着全棉籽比例的增加,中性洗涤纤维、酸性洗涤纤维、钙的表观消化率均有所提高,但各组间无显著差异(P>0.05)。4)与Ⅰ组相比,Ⅱ、Ⅲ和Ⅳ组每千克增重饲料成本分别减少了0.13、0.17和0.26元。综上,在本试验条件下,饲粮全棉籽比例为15%时可有效地改善荷斯坦公牛育肥性能。The purpose of this experiment was to study the effects of dietary whole cottonseed ratio on fattening performance, serum biochemical parameters and nutrient apparent digestibility of Holstein bulls. Forty-four healthy Holstein bulls with similar body weight were randomly divided into 4 groups with 11 bulls in each group. Dietary whole cotton seed ratio was 0, 5%, 10% and 15% for groups Ⅰ, Ⅱ, Ⅲ and Ⅳ, respectively. The levels of energy and crude protein were basically identical in different groups. The pre-trial lasted for 7 d, and the formal trial lasted for 90 d. The results showed as follows： 1） average daily gain of group Ⅳ was the highest, which was 9.80% higher than that of group Ⅰ（ P 〈0.05）; dry matter intake of group Ⅳ was the highest, and of which the feed/gain was the lowest, but no significant differences were found among groups （ P 〉 0.05 ）. 2） Serum content of insulin-like growth factor 1 in groups Ⅲ and Ⅳ was 4.79% and 6.76% higher than that of group Ⅰ （ P 〈0.05）, respectively. With the increment of whole cottonseed ratio, the activities of alanine aminotransferase and aspartate aminotransferase, and the contents of free fatty acid and growth hormone in serum were increased, but no significant differences were found among groups （ P 〉0.05）. 3） Apparent digestibility of neutral detergent fiber, acidic detergent fiber and calcium tended to increase with the increase of whole cottonseed ratio （ P 〉0.05）. 4） Compared with group Ⅰ, feed cost per kilogram of weight gain of groupsⅡ, Ⅲ and Ⅳ was reduced by 0.13, 0.17 and 0.26 RMB, respectively. In conclusion, under the conditions of the present experiment, when dietary whole cottonseed ratio was 15%, fattening performance of Holstein bull can be improved.

关 键 词：育肥性能 血清生化指标 全棉籽 荷斯坦公牛 

分 类 号：S823[农业科学—畜牧学]