Effects of dietary electrolyte balance on performance,plasma biochemistry indices and milk composition of sow during late gestation and lactation
LIU Yanna;YUAN Binxiang;GAN Xianhe;Ganzhou Agricultural School;
This experiment was aimed to investigate the effects of dietary levels on reproductive performance,serum biochemistry indices and milk composition of sow during gestation and lactation phase. A total of 100 sows [Landrace×Large white,average body weight(193±5.76)kg] were randomly allotted to 5 dietary treatments with 5 replicates of 4 sows. Sows were fed with corn soybean meal basal diets,and the trial dies were supplementation of 2%,4%,6% and 8% rapeseed meal. The results showed that body weight and backfat thickness at mating and d 110 of gestation and during lactation were not affected by dietary rapeseed meal levels in gestation diets,and there were no differences in lactation feed intake and weaning to estrus interval as dietary rapeseed meal supplementation levels in the gestation diet increased(P 0.05). Litter size,piglet and litter performance were not affected among the groups(P 0.05). Serum T3 and T4 concentration of sows at d 110 of gestation increased quadratic(P 0.05)and linear(P 0.05)by increasing dietary rapeseed meal supplementation levels in the gestation diets levels in gestation diets. Serum glucose level at d 110 of gestation decreased linearly as dietary rapeseed meal supplementation levels increased(P 0.05). Colostrum and milk compositions were not affected by dietary rapeseed meal levels(P 0.05). In conclusion,we induced that the rapeseed meal could be supplemented to gestation diets up to 8% with no detrimental effects on reproductive performance and growth of their progeny. Supplementation levels of rapeseed meal in gestation diets may increase serum T3 and T4 concentrations and decrease serum glucose concentration of sows in late gestation.
【CateGory Index】： S828.5