加酶预消化饲料对断奶仔猪生长和养分表观消化率的影响

Effects of Enzyme Predigested Feed on Growth Performance and Nutrients Apparent Digestibility in Weaned Piglets

为研究体外加酶预消化饲料对断奶仔猪生长与养分消化率的影响,选用28日龄断奶杜长大仔猪80头,按试验要求随机分为4组,每组2个重复,每个重复10头,分别饲喂基础饲粮颗粒料(Ⅰ组)、基础饲粮预消化颗粒料(Ⅱ组)、普通加酶饲粮颗粒料(Ⅲ组)、加酶预消化饲粮颗粒料(Ⅳ组),预试期7 d,正试期28 d。结果表明,Ⅳ组仔猪日增体质量(P<0.05)和饲料转化率(P<0.05)显著高于Ⅰ和Ⅱ组,腹泻率极显著低于Ⅰ、Ⅱ和Ⅲ组(P<0.01);Ⅳ组仔猪能量和钙表观消化率均高于Ⅰ和Ⅱ组(P<0.05),但与Ⅲ组比较差异不显著(P>0.05);Ⅳ组仔猪磷表观消化率显著高于Ⅲ组(P<0.05)、Ⅰ和Ⅱ组(P<0.01),Ⅳ组粗蛋白表观消化率虽略有提升,但与其它3组相比差异不显著。加酶预消化饲料可提高断奶仔猪对饲料养分的消化,进而促进其生长。

To study the effects of enzyme predigested feed on growth performance and apparent digestibility of nutrients in weaned piglets, eighty （Duroc× Landrace×Yorkshine） 28 old age of weaned piglets were randomly divided into control （group Ⅰ ）, no enzyme addition predigesting group（group Ⅱ ）, common enzyme addition group （groupⅢ ）, enzyme addition predigesting group（group Ⅳ） with 2 duplicates in each group which had 10 piglets each. The experimental period included 7 days of preliminary trial and 28 days of test trial. The results showed that daily gain and feed conservation rate was increased in group Ⅳ compared with group Ⅰ and Ⅱ （P〈0.05） ; Pigs fed enzyme predigested diets have significantly lower diarrhea rate than that of group Ⅰ , Ⅱ and Ⅲ （P〈0.01）. Apparent digestibility of energy and calcium was also higher in group Ⅳ than that in group Ⅰ , Ⅱ （P〈0.05） and group Ⅲ （P〉0.05）. The apparent digestibility of phosphorus was increased significantly in group Ⅳ compared with group Ⅰ , Ⅱ （P〈0.01） and Ⅲ （P〈0.05）, there was no difference for apparent digestibility of crude protein among all groups. It was suggested that the enzyme predigested feed was effective to improve digestibility performance of nutrients and growth of weaned piglets.