Effects of supplementary feeding before and after breeding on lambing rate and production performance of Albas cashmere goats
The aim of this study was to further increase the lambing rate of Albas cashmere goats and improve the breeding efficiency.A total of 280 Albas cashmere goats fertile adult ewes were randomly divided into four groups with 70 ewes in each group.Experimental group 1(Group A1)and group 2(Group A2)were supplemented from 30 days before breeding to 15 days after breeding,and each animal was supplemented with 0.4 kg of high-energy concentrate per day after grazing for a total of 60 days.Control group 1(CK1 group)and control group 2(CK2 group)were grazed naturally throughout the day.Groups A1 and CK1 started breeding on October 10,and groups A2 and CK2 started breeding on November 10.The pre-feeding period lasted for 5 days,and the formal experiment period lasted for 60 days.The results showed that supplementation could increase the average daily gain of ewe(P<0.05)and lambing rate.The lambing rate of group A1 in October was 163.37%,which was 22.55%higher than that of group CK1.The birth weight of the single lamb was increased by 0.33 kg,the cashmere yield of the ewes was increased by 0.15 kg in April of the following year,and the body weight after fleecing was increased by 2.38 kg.The study indictaed that short-term optimal feeding combined with artificial insemination could improve the lambing rate and performance of Albas cashmere goats at the optimum breeding time of 10 months.
Supplementary feeding before and after breedingAlbas cashmere goatLambing rateProduction performance
万方数据
维普
