日粮纤维的营养学功能及对母猪产仔数的影响

母猪繁殖性状主要包括总产仔数、产活仔数、初生个体均重及初生窝重、泌乳力、断奶仔猪数、断奶个体均重及断奶窝重,其中,产仔数是最重要的繁殖力评定指标。日粮纤维对家畜的营养物质的消化率存在负面影响,但是近半个世纪以来由于日粮纤维独特的性质在母猪的营养研究中备受关注。文中将从日粮纤维的定义及分析方法、理化特性着手,阐述日粮纤维添加到母猪妊娠日粮中对产仔数的影响并分析其可能原因。

Nutriology function of dietary fiber and its influence on the litter size of sow

Sow reproductive performance includes the total litter size,the alive litter size,the birth weight,the total litter weight of live pigs at birth,the number of weaned piglets,litter weight at weaning,average weight at weaning,among them,the litter size is the most important fertility evaluation index.Dietary fiber has negative impact on nutrient digestibility of animals,but dietary fiber has been widely investigated in the last four decades for its unique properties.From definition and analytical method,physicochemical property of dietary fibers,this review elaborates effect of dietary fiber inclusion in gestation diet on litter size and analyze the possible reasons for such effect.