Effect of adding methionine selenium to the diet on the reproductive performance of breeding boars
This study aims to investigate the effect of adding methionine selenium to the diet on the reproductive performance of breeding boars.Select 40 healthy Duroc boars with a weight of(130±5.13)kg and similar mating times and age,who are currently in use.Randomly divide them into 4 groups,with 10 replicates in each group,and 1 boar in each replicate.The control group was fed with a basal diet supplemented with 0.15mg/kg of sodium selenite,while the experimental groups Ⅰ,Ⅱ,Ⅲ,and Ⅳ were fed with 0.15,0.25,0.35,and 0.45 mg/kg of methionine selenium on top of the basal diet.The preliminary trial period was 7 days,and the formal trial period was 60 days.The experimental results showed that:(1)compared with the control group,the addition of methionine selenium in the diet had no significant effect on the growth performance indicators(experimental end weight,ADG,ADFI,F/G,and testicular end volume index)of the breeding boars,provided that there was no difference in the initial body weight and testicular initial volume index of the breeding boars(P＞0.05);(2)Compared with the control group,the addition of methionine selenium in the diet had no significant effect on the onset time of ejaculation in breeding boars(P＞0.05),but significantly increased the duration of ejaculation,semen volume,sperm density,and sperm motility(P＜0.05),and significantly reduced the sperm deformity rate(P＜0.05).Especially,the group supplemented with 0.25mg/kg methionine selenium in the diet had the highest sperm motility rate and the lowest sperm deformity rate,In addition,the sperm motility of the diet supplemented with 0.25,0.35,and 0.45mg/kg methionine selenium was significantly higher than that of the control group and experimental group Ⅰ(P＜0.05);(3)The addition of methionine selenium in the diet significantly increased the SOD activity,T-AOC,and GSH-Px content in the sperm of breeding boars(P＜0.05),and significantly reduced the MDA content in the sperm.There was no significant difference between the experimental groups(P＜0.05).According to the comprehensive experimental measurement indicators,adding methionine selenium to the diet can improve the antioxidant capacity of sperm and semen quality,thereby improving the reproductive performance of breeding boars.The best effect is to add 0.25 mg/kg methionine selenium to the diet.
NETL
NSTL
万方数据
维普
