不同粗纤维水平日粮对妊娠母猪生殖激素水平的影响

Effect of dietary fiber with different levels on reproductive hormones of pregnant sows

为研究不同粗纤维水平日粮对妊娠母猪生殖激素水平的影响,选用30头胎次、配种时间及体况均相近的经产PIC配套系父母代母猪,随机分成5组,妊娠期间分别饲喂含3%、5%、7%、9%和11%的苜蓿草粉粗纤维日粮,通过调节各组的饲喂量,使其所摄入的能量、蛋白、钙、磷等水平基本一致。3%为对照组,日粮中不另加粗纤维。研究结果显示:提高日粮中粗纤维水平会降低妊娠各阶段母猪雌二醇的浓度,但增加妊娠后期孕酮和催乳素的浓度,且当日粮中粗纤维含量达到9%时效果最佳。

The aim is to study the effect of dietary fiber on reproductive hormones of sows. Thirty PIC sows with similar parity and breeding time were randomly divided into 5 groups which provided dietary with 3%, 5%, 7%, 9% or 11% of crude fiber during pregnancy, respectively. Alfalfa powder was used to control fiber level based on 3% group （control group）, and feed intake was adjusted to balance energy, protein, calcium, phosphorus. The results showed that： improving the level of crude fiber in the diet could increase the levels of progesterone and prolactin, but decrease estradiol concentration, and the op timal level of dietary fiber was 9%.