不同类型叶黄素对高温条件下黄羽肉鸡生长性能及着色效果的影响

本试验旨在研究日粮中分别添加常规叶黄素和高玉米黄质叶黄素对高温条件下(33±0.52)℃黄羽肉鸡生长性能及着色效果的影响.选取60日龄、初始体重(1209±72)g、健康状况良好的雌性黄羽肉鸡144只,随机分为3个处理,每个处理6个重复(笼),每个重复8只鸡.对照组饲喂基础日粮,试验组在基础日粮中分别添加2 g/kg的...

Effects of Different Types of Lutein on Growth Performance and Pigmentation of Yellow-Feathered Broilers in High Temperature Environment

The aim of this study was to investigate the effects of conventional lutein and high-zeaxanthin on growth performance and pigmentation of yellow-feathered broilers in high temperature environment(33±0.52)℃.A total of 14460-day-old healthy female yellow-feathered broilers(initial body weight of 1209±72 g)were randomly divided into 3 groups with 6 replicates in each group and 8 chickens in each replicate.The 3 treatments were the control group(basic diet group),the 2 treatment groups were supplemented 2 g/kg conventional lutein or high-zeaxanthin,respectively.The pre-test period was 7 days,the trial period was 28 days.The results showed that the final body weight and average daily gain of yellowfeathered broilers in the conventional lutein group were significantly higher than those of control group,and the survival rates of the conventional lutein group and the high-zeaxanthin group were significantly higher than those of control group(P<0.05).After feeding for 24 days,the lightness value(L^*value)and yellowness value(b^*value)of subwing skin in the highzeaxanthin group were significantly higher than those in other 2 groups(P<0.05).After feeding for 28 days,the yellowness value of tarsometatarsus of yellow-feathered broiler in conventional lutein group and high-zeaxanthin group was significantly higher than those of control group.The yellowness value of beak in the high-zeaxanthin group was significantly higher than those of other 2 groups.And b value of yellow feather broiler breast muscle of conventional lutein group was significantly higher than that of control group.In addition,the activities of T-AOC,GSH-Px in the 2 treatments groups were both increased compared to control groups,however,the concentration of MDA significantly decreased(P<0.05).In summary,the addition of conventional lutein and high-zeaxanthin in feed can promote growth performance and pigmentation effect of yellow-feathered broilers in high temperature environment,and the high-zeaxanthin is better.