饲粮离子平衡对母猪繁殖性能的影响

Dietary Electrolyte Balance on Reproductive Performance in Sows

为研究饲粮离子平衡对母猪繁殖性能的影响,试验选择160头二元杂种母猪[长白×大白,平均体重(274.3±4.95)kg,平均胎次(3.6±0.68)],按体重和胎次相近原则随机分为2组:对照组饲喂饲粮离子平衡(dEB)为160 mEq/kg的妊娠饲粮(配种当天至分娩)+饲粮离子平衡(dEB)为200 mEq/kg的哺乳饲粮(分娩至断奶),T1组饲喂饲粮离子平衡(dEB)为300 mEq/kg的妊娠饲粮(配种当天至分娩)+饲粮离子平衡(dEB)为200 mEq/kg的哺乳饲粮(分娩至断奶)。每组80个重复,每个重复1头母猪。试验期140 d。结果表明:1)试验处理对初生窝重、平均初生重、母猪哺乳期平均采食量、哺乳仔猪平均日增重、断奶-发情间隔、背膘厚度和背膘损失无显著影响(P>0.05);2)对照组总产仔数、产活仔数、断奶数、断奶窝重、平均断奶重显著高于T1组(P<0.05)。试验结果表明在该试验条件下,与妊娠期饲粮离子平衡为300 mEq/kg比,饲粮离子平衡为160 mEq/kg显著提高了母猪总产仔数、产活仔数、断奶数、断奶窝重和平均断奶重。

This study was conducted to determine the effects of dietary electrolyte balance on reproductive performance in weaning sows.A total of 160 healthy sows[average body weight(274.3±4.95)kg;average parity(3.6±0.68)]was randomly divided into 2 treatments based on body weight and parity.Dietary treatments were as follows:1)CON,dEB 160 mEq/kg gestation diet;2)T1,dEB 300 mEq/kg gestation diet.There were 80 replications per treatment with 1 sow per replication.The experiment lasted 140 days.The results showed:1)there was no difference in litter weight at birth,average birth weight,average daily feed intake during lactation,average piglet daily gain during lactation,estrus interval backfat thickness or backfat loss(P>0.05);2)the total born piglets,born alive piglets,total weaned piglets,weaning litter weight and average piglet weaning weight in CON group were higher than those in T1 group(P<0.05).Taken together,dEB 160 mEq/kg gestation diet improved total born piglets,born alive piglets,total weaned piglets,weaning litter weight and average piglet weaning weight in sows.