代乳料原料组成对早期断奶羔羊生长及脏器发育的影响

为了探讨代乳料原料的不同组合效应对早期断奶羔羊的饲喂效果,选取25只甘肃高山细毛羔羊,分为5组,每组5只,对照组羔羊由母羊自由哺乳和放牧;试验组羔羊30日龄断奶,饲喂4种代乳料:A组主原料未膨化,B组主原料膨化,C组主原料膨化+血浆蛋白粉,D组在C组基础上增加乳清粉。试验期为30~90日龄。结果表明:50、70日龄时,对照组羔羊体质量最大,试验组羔羊受断奶应激的影响,相应指标较小。90日龄时,D组体质量显著高于B、C组(P0.05),超过了对照组。30~90日龄阶段,D组日增体质量最大,且显著高于B、C组(P0.05)。对照组脾脏质量显著高于4个试验组(P0.05),且脾脏指数最高。说明在代乳料中添加血浆蛋白粉及增加乳清粉,有利于羔羊健康发育,使代乳料的饲喂效果最佳。

Effects of milk replacer mixture on growth and organ development in early-weaned lambs

The feeding effects of the milk replacer with different materials and formulas in early weaned lambs were studied. Twenty five 30 day lambs (Gansu Alpine Fine Wool Sheep) were divided into 5 groups and 5 in each group, the lambs in control group were breast fed and grazed with the ewes; the lambs in treatment group were weaned at 30 day age and fed with 4 different milk replacers (Group A: popped main diet materials; Group B: un popped main diet materials; Group C: popped main diet materials with spray dried porcine plasma (SDPP); Group D: with whey powder on the basis of C). The trial period was from 30 to 90 days age. The results showed that the body weights of the control group were maximum at 50 and 70 day age. The lambs in treatment group were affected by weaning stress. The body weight of group D was significantly higher than the group B and C (P<0.05) and more than the control group at 90 day age. The daily weight gains of group D were maximum and significantly higher than the group B and C (P<0.05) during 30 to 90 day age. The spleen weight in control group was significantly higher than 4 treatment groups (P<0.05), spleen index was maximum. In a conclusion, the milk replacer with SDPP and whey powder was positive to health, and further, body weight gains for early weaned lambs.