| Fulvic acids is a small molecule organic compound extracted from weathered coal and lignite,black in color and without special odor,which is widely used in various fields such as industry,agriculture,medical treatment and animal husbandry for promoting the growth of plants and animals and improving the immunity of the body.In order to study the effects of feeding different doses of fulvic acids on the reproductive performance,antioxidant performance,serum biochemical parameters and fecal microorganism of sows,and to provide some objective scientific basis for adding xanthate to improve the reproductive performance and reproductive function of sows,this study selected normal reproductive ternary sows in the empty period and randomly divided into 4 treatment groups,each group replicated 30 sows,the control group was fed the basic diet,the experimental group The control group was fed the basal diet and the experimental group was fed the experimental diet with 0.05%,0.10% and0.15% xanthate added to the basal diet until the next estrus cycle.The results of the study were as follows:1.comparison of serum biochemical parameters: total protein(TP)index was higher in test group 1 than control group but the difference was not significant(P>0.05),but test group1 increased by 10.35% compared with test group 3 with significant difference(P ﹤ 0.05);albumin(ALB)content of each test group increased compared with control group,among which test group 2 increased by 15.09% compared with control group with significant difference(P﹤0.05)(P﹤0.05);glucose(GUL)content increased in all experimental groups compared with the control group,among which the content in experimental group 1 and 2increased by 77.91% and 55.43% respectively compared with the control group(P﹤0.05);triglyceride(TG)content decreased by 54.29% in experimental group 2 compared with the control group(P﹤0.05);blood phosphorus(IP)content increased in experimental group 1,experimental group 2 and experimental group 3 compared with the control group(P﹤0.05).The blood phosphorus(IP)content of test group 1,test group 2 and test group 3 decreased by25.78%,22.98% and 17.08% respectively compared with the control group(P﹤0.05).2.Comparison of reproductive performance: there was no significant difference between groups in the number of weak offspring,number of stillbirths,number of mummified fetuses,weaning litter weight,number of pigs with head and 21-day lactation power(P>0.05).The number of total litters increased by 11.29% in test group 2 compared with the control group(P﹤0.05),and 12.08% in test group 2 compared with test group 3(P﹤0.05);the number of live births increased by 13.12% in test group 2 compared with the control group(P﹤0.05),and 8.46% in test group 2 compared with test group 3(P(P﹤0.05);the number of healthy litter increased by 11.64%,9.67% and 10.70% in test group 2 compared with the control group,test group 1 and test group 3 respectively(P﹤0.05),and the weaning weight increased by 6.54%,9.20% and 9.06% in test group 3 compared with the control group,test group 1 and test group 2 respectively(P﹤0.05).3.Comparison of colostrum parameters: there was no significant difference between groups in milk fat rate,milk protein,milk protein and non-fat milk solids(P > 0.05);colostrum IgG test group II increased by 51.74% and 27.00% compared with the control group and test group I respectively(P﹤0.05).4.Comparison of antioxidant capacity: there was no significant difference in total antioxidant capacity(T-AOC)and malondialdehyde(MDA)among all groups(P >0.05),superoxide dismutase(SOD)was improved in all test groups compared with the control group,but test group II improved 5.70% difference compared with the control group(P﹤0.05).5.Comparison of serum antibodies: Immunoglobulin G(IgG)test group 1,test group 2and test group 3 was increased by 41.42%,60.13% and 35.64% respectively compared with the control group(P﹤0.05);Immunoglobulin M(Ig M)test group 1,test group 2 and test group 3 increased by 28.88%,47.76% and 22.50% respectively compared with the control group(P﹤0.05).The differences were significant(P﹤0.05);immunoglobulin A(Ig A)test group II and test group III increased by 57.65% and 24.69% respectively compared with the control group(P﹤0.05).6.Comparison of reproductive hormones: there was no significant difference in estradiol(E2)and follicle stimulating hormone(FSH)between the groups(P>0.05);progesterone(P)increased by 110.26% in test group 1 compared with the control group(P ﹤ 0.05),and luteinizing hormone(LH)decreased by 29.05%,38.17% in test group 1,test group 2 and test group 3 compared with the control group,respectively.The difference was significant(P﹤0.05).7.Comparison of fecal microorganisms: there was no significant difference in the number of Salmonella among all groups(P > 0.05),and the number of Salmonella in test group 2 was slightly decreased by 0.34% compared with the control group.Compared with the control group,the number of Escherichia coli in experimental groups decreased by 32.21%,27.28% and 27.38%,respectively,and the decrease in experimental group 1 was the most significant(P<0.05).In conclusion,the addition of fulvic acids in the ration can improve the reproductive performance of sows,and the suitable additive amount is 0.10%. |
