中国荷斯坦阉牛与公牛育肥效果及脂肪代谢功能的比较  

Comparison of fattening effect and fat metabolism function between Chinese Holstein steers and bulls

作　　者：柴金宝 刘利[2] 王建发[1] 卜也 岳萌萌 武瑞[1] 孙芳[2] CHAI Jinbao;LIU Li;WANG Jianfa;BU Ye;YUE Mengmeng;WU Rui;SUN Fang(College of Animal Science and Veterinary Medicine,Heilongjiang Bayi Agricultural University,Daqing 163319,China;Institute of Animal Husbandry,Heilongjiang Academy of Agriculural Sciences,Harbin 150086,China)

机构地区：[1]黑龙江八一农垦大学动物科技学院,黑龙江大庆163319 [2]黑龙江省农业科学院畜牧研究所,哈尔滨150086

出　　处：《黑龙江畜牧兽医》2022年第17期62-64,69,共4页Heilongjiang Animal Science And veterinary Medicine

基　　金：黑龙江省农业科学院“农业科技创新跨越工程”专项(2019CX-16);黑龙江省现代农业产业技术协同创新推广体系项目(黑农厅函[2021]1492);荷斯坦公犊低成本高效生产优质牛肉技术推广与应用项目(23000021Y000000055567)。

摘　　要：为了明确早期阉割对中国荷斯坦公牛育肥效果和脂肪代谢的影响,试验选择背景一致的13月龄中国荷斯坦公牛和阉牛各3头,用全价育肥混合日粮饲喂3个月,于第30,60,90天清晨饲喂前保定称重,并计算平均日增重。于屠宰前1天采集血液分离血清,测定血清胆固醇(TC)、三酰甘油(TG)、白细胞介素-6(IL-6)、C反应蛋白(hs-CRP)、肿瘤坏死因子(TNF-α)、瘦素(LEP)和脂联素(ADP)含量。结果表明:与中国荷斯坦公牛比较,阉牛屠宰胴体重提高9.16 kg(P>0.05),平均日增重提高64.95 g(P>0.05);血清TC和TG含量均显著升高(P<0.05);血清IL-6和ADP含量极显著升高(P<0.01),hs-CRP和LEP含量升高(P>0.05),TNF-α含量降低(P>0.05)。说明早期阉割可影响中国荷斯坦公牛的脂肪代谢功能,对育肥效果无增强作用,对脂肪沉积有促进作用。In order to investigate the effects of early castration on fattening effect and fat metabolism of Chinese Holstein bulls,three 13-month-old Chinese holstein bulls and three steers with the same background were selected and fed with full fattening mixed diet for 3 months.The animals were weighed before feeding in the morning of the 30 th,60 th and 90 th days and average daily gain(ADG)was calculated.Blood was collected and serum was separated on the 1 day before slaughter.The serum obtained was used to determine the contents of cholesterol(TC),triglyceride(TG),interleukin-6(IL-6),C-reactive protein(hS-CRP),tumor necrosis factor(TNF-α),leptin(LEP)and adiponectin(ADP).The results showed as follows:compared with Chinese Holstein bulls,the carcass weight was 9.16 kg(P>0.05),and average daily gain was 64.95 g(P>0.05).Serum TC and TG contents were significantly increased(P<0.05);Il-6 and ADP contents were significantly increased(P<0.01);hs-CRP and LEP contents were increased(P>0.05);TNF-αcontent was decreased(P>0.05);serum LEP concentration was up-regulated(P>0.05).The results showed that early castration could affect the fat metabolism of Chinese Holstein bulls,and promote the fat deposition but did not enhance the fattening effect.

关 键 词：中国荷斯坦公牛 中国荷斯坦阉牛 育肥效果 脂肪代谢 脂肪因子 

分 类 号：S823[农业科学—畜牧学]