奶牛热应激,一直是影响现代化牧场效益的主要因素,尤其是在夏季最热时候。热应激不但影响奶牛干物质采食量,而且影响奶牛后续生产。提高热应激期间奶牛干物质采食量,一直是困扰现代奶牛场的主要问题之一。本文研究热应激期间调整奶牛饲喂方式对奶牛干物质采食量的影响。试验表明,夏季热应激期间,通过调整奶牛饲喂时间、增加饲喂次数,分别提高奶牛干物质采食量0.52 kg、0.80 kg,提高奶牛产量1.00 kg、1.31 kg。
Heat stress has always been the main factor affecting the benefits of modern pasture, especially in the hottest time in summer. Heat stress not only affects the dry material intake of cows,but also affects the subsequent production of cows. Improving the dry matter intake of dairy cows during heat stress has been one of the main problems puzzling modern dairy farms This paper studied the effect of adjusting dairy cow feeding mode on dry material feed intake during heat stress. The experiment showed that during the summer heat stress period,by adjusting the feeding time and increasing the feeding times,the dry matter intake of dairy cows was increased by 0.52 kg and 0.80 kg,and the yield of dairy cows was increased by 1.00 kg and 1.31 kg respectively.
[1] 李征,梅成,郭智成.应激对荷斯坦奶牛生产性能和乳脂脂肪酸组成的影响[J].中国乳品工业,2009,37(9):17-19.
[2] 魏学良,张家骅,王豪举,等.高温环境对奶牛生理活动及生产性能的影响[J].中国农学通报,2005,21(5):13-15.
[3] 吴永霞,董国忠,贾亚伟.氧化应激对奶牛的危害及防治[J].中国饲料,2011(4) :32-36.
[4] 樊华,樊丽,王峰,等.热应激对泌乳奶牛血液生化指标的影响[J].中国畜牧兽医,2007,4(34):45-46.
[5] 李建国,安永福.热应激对奶牛生理常值、血液生化指标、繁殖及泌乳性能的影响[J].河北农业大学学报,1998 ,21(4):69-75.
[6] 韩兆玉,周国波,金志红,等.过瘤胃蛋氨酸对热应激下奶牛生产性能、淋巴细胞凋亡以及相关基因的影响[J].动物营养学报,2009,21(5):665-672.
[7] 程广龙,江喜春,朱德建,等.奶牛热应激的发生及减缓措施[J].安徽农业科学,2008,36(7):2772-2773.
[8] 孙科业,石传林,张娜.炎夏日粮中添加小苏打对泌乳牛生产性能的影响[J].饲料世界,2002(7):23-24.
[9] 李如治,王仕英,张国钧,等.对提高乳牛高温季节产乳量几项技术的评价[J].中国农学通报,1988(2):25-31.
