Study On Improving Reproductive Performance Of Sows With Chinese Herbal Medicine

In the pig industry,due to improper management,environmental abnormalities,improper nutrition and other factors caused by the sows reproductive barriers are becoming more and more serious,such as estrus retardation,repeated infertility,miscarriage,dystocia,low lactation and so on.Breeding barrier leads to high elimination rate of sows,which affects the efficiency of pig breeding.In order to solve these practical production problems and improve the reproductive performance of sows,this experiment combined the reproductive physiological characteristics of sows,designed compound Chinese herbal medicine additives to be added to the sows’ diets,and observed their effects on different reproductive stages of sows,so as to improve the reproductive performance of sows.In this study,60 sows were selected as the estrus group,pregnancy group and lactation group respectively on the day of weaning,mating and delivery.Each group was randomly divided into two groups,the control group and the treatment group.Each group had 30 sows.The estrus group and the pregnancy group were fed for 7 consecutive days,and the lactation group was fed for 10 consecutive days.In the estrus group,the estrus rate at 5 days after weaning and the estrus rate at 7 days after weaning were observed and statistically analyzed.Blood samples were collected after feeding in the pregnancy group and lactation group,and the related hormones and serum biochemical indexes were determined as follows: BA,TC,TP,T3,T4,INS,NPY,P4,FSH,LH,PRL,etc.Results:(1)experiment I: the estrus rate at 7 days after weaning was 80.00±11.18% in the treatment group and 76.70±19.19% in the control group,with no significant difference(p>0.05).The estrus rate at 5 days after weaning was 66.70±20.92% in the treatment group and 36.70±18.07% in the control group,with a significant difference(p<0.05).(2)experiment 2: the average litter size of the treatment group was 11.533±0.321,and the average litter size of the control group was 10.024±0.149(p<0.05).Chinese herbal medicine had no significant effect on the contents of BA,T3,TP,P4,FSH and LH in pregnant sows(p>0.05),but had a very significant effect on the contents of INS,T4 and NPY(p<0.01),and had a significant effect on the contents of TC and PRL(p<0.05).(3)experiment 3: the average weaning weight of the treatment group was 8.62±0.65 kg,while that of the control group was 7.74±0.39 kg.The effects of Chinese herbal medicine additives on the contents of BA,TP,TC,T3,P4,FSH and LH in lactating female pigs were not significant(p>0.05),but the effects on the contents of INS and NPY were extremely significant(p<0.01),the effects on the contents of T4 were significant(p<0.05),and the effects on the contents of PRL were significant(p<0.05).Conclusion:Compound Chinese herbal medicine can improve reproductive performance of sows.