妊娠后期饲粮添加膳食纤维对初产母猪繁殖性能的影响

Effect of dietary fiber supplementation during late gestation on reproductive performance of primiparous sows

试验研究在母猪妊娠后期饲粮中添加膳食纤维对母猪繁殖性能的影响。挑选体况相近的法系大白初产母猪46头,妊娠后期(妊娠80 d)随机分为对照组和膳食纤维组,分别饲喂基础饲粮和膳食纤维饲粮,每组23头母猪,单栏饲养。基础饲粮为玉米-豆粕型妊娠母猪饲粮,膳食纤维饲粮为在基础饲粮中添加2.5%的膳食纤维替代小麦麸。结果显示:妊娠后期饲粮添加膳食纤维不影响妊娠110 d背膘厚、妊娠后期背膘变化、妊娠后期平均日采食量以及分娩产程和产仔间隔(P>0.05)。妊娠后期饲粮添加膳食纤维对窝产总仔数、死胎数、畸形数、木乃伊数、初生窝重、初生个体重以及体重标准差和变异系数无显著影响(P>0.05),但显著提高了窝产健仔数(P<0.05),显著降低了窝产弱仔数(P<0.05)。妊娠后期饲粮添加膳食纤维对仔猪初生体重BW<0.8 kg、0.8 kg≤BW<1.3 kg、BW≥1.8 kg区间比例无显著影响(P>0.05),但极显著提高了仔猪初生体重在1.3 kg≤BW<1.8 kg区间的比例(P<0.01)。

The study investigated the effect of dietary fiber(DF)supplementation during late gestation on reproductive performance in primiparous sows.At 80 d of gestation,a total of 46 primiparous sows(France Large White)with similar body condition was selected and randomly allotted into two groups(Con or DF group),with 23 sows per groups,and sows were housed in individual crates.The experiment basal diet was a corn-soybean meal diet for gestation sows,while the dietary fiber supplemented diets were formulated by adding 2.5%of dietary fiber instead of wheat bran in the basal diet.The results are as follows:Dietary DF supplementation during late gestation did not affect the backfat thickness at 110 d of gestation,backfat thickness change and average daily feed intake during late gestation,duration of farrowing and farrowing interval(P>0.05).Dietary DF supplementation during late gestation did not affect the total born piglets,stillborn piglets,abnormalities piglets,mummy piglets,litter weight at birth and the average birth weight of piglets,standard deviation and coefficient of variation of birth weight(P>0.05),but significantly improved litter healthy piglets(P<0.05)and significantly reduced litter weak piglets(P<0.05).Dietary DF supplementation during late gestation did not affect the proportion of piglets birth weighing BW<0.8 kg、0.8 kg≤BW<1.3 kg、BW≥1.8 kg(P>0.05),significantly increased the proportion of piglets birth weighing 1.3 kg≤BW<1.8 kg(P<0.01).