乳化剂对蛋鸭生产性能、蛋品质和脂肪代谢的影响

Effect of Emulsifier on Production Performance, Egg Quality and Fat Metabolism in Laying Ducks

为研究不同水平乳化剂对蛋鸭生产性能、蛋品质和脂肪代谢的影响,研究选取300日龄体重相近、健康的“神丹2号”蛋鸭480只,随机分为4组,每组6个重复,每个重复20只蛋鸭。对照组饲喂基础日粮,乳化剂组在基础日粮中分别添加100、150、200 g/t乳化剂,预试期10 d,正式期8周。结果显示:添加乳化剂对蛋鸭采食量影响不显著(P>0.05),100 g/t乳化剂添加组5~8周料蛋比显著降低(P<0.05);整个试验周期,乳化剂组与对照组产蛋率差异不显著(P>0.05),但乳化剂组产蛋率相对稳定,其中100 g/t乳化剂添加组产蛋后期产蛋率显著提高(P<0.05);蛋重方面,100和150 g/t乳化剂添加组蛋重显著降低(P<0.05);添加乳化剂对蛋鸭5个蛋品质指标影响不显著(P>0.05);150 g/t乳化剂添加组血清甘油三酯水平显著降低(P<0.05),3个乳化剂组其他血清指标变化不显著(P>0.05)。综上所述,在本试验条件下添加100 g/t乳化剂可显著提高蛋鸭产蛋后期的生产性能。

To study the effects of different levels of emulsifiers on production performance, egg quality and fat metabolism of laying ducks, 480 300-day-age healthy "Shendan No. 2" laying ducks with similar weight were randomly divided into 4 groups with 6 repetitions in each group and 20 laying ducks in each repetition. The control group was fed with the basal diet. The emulsifier groups were fed with the basal diet added 100, 150, 200 g/t emulsifier. The pre-test period was 10 days and the formal test period was 8 weeks. The results showed that the addition of emulsifier had no significant effect on the feed intake of laying ducks(P>0.05), and the feed-to-egg ratio of 100 g/t emulsifier addition group was significantly decreased at 5 to 8 weeks of age(P<0.05).Throughout the test period, the egg production rate among the emulsifier groups and the control group were not significantly different(P>0.05), but the egg production rate of the emulsifier groups were relatively stable, and the egg production rate of 100 g/t addition group increased significantly in the later stage of egg production(P<0.05). The egg weight of 100 and 150 g/t emulsifier addition groups decreased significantly(P<0.05). The addition of emulsifier had no significant effect on the five indexes of egg quality(P>0.05). The serum triglyceride level in 150 g/t emulsifier addition group was significantly decreased(P<0.05), and other serum indexes of the three emulsifier groups had no significant changes(P>0.05). To sum up, the addition of 100 g/t emulsifier could significantly improve production performance in the later stage of cycle.