冬季配种前1个月补饲对高山美利奴羊生产性能的影响  

Effects of supplemental feeding in January before winter mating on the production performance of alpine merino sheep

作　　者：王喜军 张晓飞 赵浴君 WANG Xijun;ZHANG Xiaofei;ZHAO Yujun(Sheep Breeding Technology Extension Station,Gansu Province,Zhangye,Gansu Province 734031,China)

机构地区：[1]甘肃省绵羊繁育技术推广站,甘肃张掖734031

出　　处：《中国饲料》2022年第20期21-24,共4页China Feed

基　　金：国家绒毛用羊产业技术体系资助(CARS-40-33)。

摘　　要：文章旨在研究冬季配种前1个月补饲对高山美利奴羊生产性能的影响。课题组从2019年7月至2020年6月对祁连山牧区牧草营养成分随季节变化的规律进行了研究,每年6~10月青草粗蛋白质含量在14.0%以上,消化率为40.52%~65.25%,可以满足羊只的营养需求,可以全期放牧饲养;而11月至来年5月粗蛋白质含量降为14%以下,消化率为28.78%~40.52%,不能满足羊只营养需求,而传统补饲是从12月开始的,调整为11月份即冬季配种前1个月对高山美利奴羊进行全价饲料少量补饲,其余养殖方式不变,2020年11月课题组按照优化补饲方案进行补饲对比试验,通过2021年4月试验组与对照组产羔期间的情况统计分析发现,与对照组相比,试验组羔羊初生重增加0.75 kg;双羔率提高10.8个百分点,养殖效益明显,值得养殖户学习借鉴。This experiment was conducted to investigate the effects of supplementary feeding one month before winter breeding on performance of alpine Merino sheep.From July 2019 to June 2020,the research group studied the seasonal variation of forage nutrients in the Qilian Mountain grazing area.From June to October each year,the crude protein content of the grassland was more than 14.0%,and the digestibility was between 40.52 and 65.25%,which could meet the nutritional requirements of sheep and could be grazed for the whole period.However,from November to May,the crude protein content decreased to less than 14%,and the digestibility was 28.78%~40.52%,which could not meet the nutritional requirements of sheep.The traditional supplemental feeding started from December,and was adjusted to a small amount of supplemental feeding with full price for alpine Merino sheep in November,that is,one month before the winter breeding.The rest of the breeding methods remained unchanged.In November 2020,the research group conducted a supplementary feeding comparison test according to the optimal supplementary feeding scheme.According to the statistics of the experimental group and control group during lambing in April 2021,it was found that the birth weight of lambs in the experimental group was 0.75kg higher than that in the control group.The double lambing ratio is 10.8 percentage points higher,and the breeding benefit is obvious,which is worth learning for farmers.

关 键 词：高山美利奴羊 养殖优化方案 牧草营养 产羔情况 

分 类 号：S826[农业科学—畜牧学]