冬春季暖棚舍饲对母羊体重损失及产羔性能的影响

发布时间：2018-05-08 23:38

  本文选题：放牧冷应激 + 暖棚　； 参考：《草业学报》2017年06期

【摘要】：研究冬春季暖棚舍饲对母羊体重损失及产羔性能的影响。试验分别于2011、2012和2013年冬春季在内蒙古锡林郭勒盟太仆寺旗进行,在当地选用2户临近牧户,每户挑选120只母羊,随机分为2组,分别为传统棚+放牧组(TS,对照)、改造暖棚+舍饲组(WS)。参试母羊夏秋季白天自由放牧,晚上归牧后圈在传统棚内;到冬春季TS组饲养方式不变,WS组舍饲在简易改造暖棚。整个试验期间,2组母羊及其羔羊的补饲饲料组成及饲喂量相同。试验结果表明,WS组母羊体重较TS组高1.6kg(P=0.004),体重损失较之少22g/d(P=0.005);母羊体重损失在12-1月份最严重,但经第一年(2011)饲养损失程度显著缓解(P0.001),体重损失随棚圈积温升高而减少。TS组的年均产羔数、羔羊体重及其日增重均显著低于WS组(P=0.020;P=0.0005;P=0.0001),初生重及日增重随着饲养年份的延后而增加(P0.001);产羔率、羔羊存活率和双羔率随棚圈积温的升高而增大。以上结果表明,冬春季暖棚舍饲可显著减少母羊越冬体重损失,并提高产羔力,进而提高家庭牧场收入,保护退化草场。更重要的是,冷季舍饲有助于改变牧民的传统养殖观念,从"生存观"转向"生产观"。建议,西北牧区冷季绵羊圈舍适宜积温应高于-40℃·d或基本温度高于2℃。
[Abstract]:The effects of warm shed feeding in winter and spring on the weight loss and lambing performance of ewe were studied. The experiment was conducted in the Taipousi Banner of Xilin Guolermeng in Inner Mongolia in the winter and spring of 2011 and 2013 respectively. Two nearby pastoral households were selected and 120 ewes were selected for each household, and were randomly divided into 2 groups. It was used as the traditional shed grazing group, the control group and the warm shed feeding group respectively. The ewes were grazing freely during the summer and autumn, and then closed in the traditional shed after returning to grazing at night, while the feeding mode of TS group in winter and spring was unchanged and the WS group was feeding in a simple remade warm shed. During the whole experiment, the feed composition and feed quantity of two groups of ewe and lambs were the same. The results showed that the weight of WS group was 1.6 kg / kg P0. 004 and the weight loss of WS group was 22 g / d P0. 005% less than that of TS group, and the weight loss of ewes was the most serious in December and January. However, after the first year (2011), the level of feeding loss was significantly alleviated, and the weight loss decreased with the increase of the accumulated temperature of greenhouse. The average annual litter size of the TS group was decreased. The body weight and daily gain of the lambs were significantly lower than those of the WS groups (P 0.020, P 0.0005, P 0.0001, P 0.001), and the litter yield, lambs survival rate and double lambing rate increased with the increase of the accumulated temperature of the shed, with the increase of the feeding year, the daily gain and the daily gain of the lambs were significantly lower than those of the WS groups, and the body weight of the lambs was significantly lower than that of the WS groups. The results showed that warm shed feeding in winter and spring could significantly reduce the weight loss and increase lambing capacity of ewe, and then increase the income of family pasture and protect the degraded pasture. More importantly, cold season feeding helps to change herdsmen's traditional concept of farming, from "outlook on survival" to "view of production". It is suggested that the optimum accumulated temperature of sheep sheds in the cold season in northwest pastoral area should be higher than -40 鈩，

本文编号：1863616