乳化剂对樱桃谷鸭生产性能、肌肉品质和脂类代谢的影响

将540只1日龄樱桃谷鸭随机分为3组,每组6个重复,每重复30只,分别饲喂添加0(对照组)、200、400 mg·kg-1乳化剂的试验日粮,试验期为42 d,研究不同含量乳化剂对樱桃谷鸭生长性能、肌肉品质和脂类代谢的影响.结果表明:添加400 mg·kg-1乳化剂可显著降低樱桃谷鸭前期料重比(P<0.05),提高42 d体重(P<0.05);添加200 mg·kg-1乳化剂可显著降低胸肌48 h滴水损失(P<0.05),提高胸肌24 h的pH(P<0.05).与对照组和200 mg·kg-1乳化剂组相比,添加400 mg·kg-1乳化剂可显著提高血清中的甘油三酯(TG)含量(P<0.05).添加200 mg·kg-1乳化剂可显著降低血清中的低密度脂蛋白胆固醇(LDL-C)含量(P<0.05),添加乳化剂对血清中的高密度脂蛋白胆固醇(HDL-C)、极低密度脂蛋白胆固醇(VLDL-C)和血清中的总胆固醇(TC)含量均无显著影响(P>0.05).结果提示,日粮中添加400 mg·kg-1乳化剂可提高樱桃谷鸭生产性能,添加200 mg·kg-1可改善胸肌肌肉品质,添加不同含量乳化剂均能不同程度改善脂类代谢.

Effects of emulsifier on growth performance, meat quality and lipid metabolism in Cherry Valley ducks

The objective of this experiment was to study the effect of different levels of emulsifier on growth performance,meat quality and lipid metabolism in Cherry Valley ducks.540 one-day-old Cherry Valley ducks were randomly distributed into 3 treatments,each of which had 6 replicates of 30 ducks per pen.Ducks were fed a basal diet supplemented with 0(control group),200,400 mg·kg-1 emulsifier respectively.The experiment last for 42 days.The results showed that basal diet supplemented 400 mg·kg-1 emulsifier significantly decreased feed: gain ratio(P<0.05) in starter period and increased 42 d body weight of ducks(P<0.05).Ducks fed 200 mg·kg-1 emulsifier had a lower 48 h drip loss(P<0.05) and a higher pH24 h of breast muscle(P<0.05) compared with the control.Serum triglyceride(TG) in ducks fed 400 mg·kg-1 emulsifier group was higher than that in the other two groups(P<0.05).200 mg·kg-1 emulsifier significantly decreased serum low density lipoprotein cholesterol(LDL-C)(P<0.05).There were no significant differences in high density lipoprotein cholesterol(HDL-C),very low density lipoprotein cholesterol(VLDL-C),total cholesterol(TC) in the serum and TC in liver(P>0.05).In conclusion,supplementation of 400 mg·kg-1 emulsifier can increase the growth performance of Cherry Valley ducks.Supplementation of 200 mg·kg-1 emulsifier can improve breast muscle quality.Supplementation of different levels of emulsifier can both improve the lipid metabolism of Cherry Valley ducks.