动物营养学报2013，Vol.25Issue(6)：1307-1314,8.DOI:10.3969/j.issn.1006-267x.2013.06.023
饲粮胆碱添加水平对产蛋期绍兴鸭产蛋性能、蛋品质、生殖器官发育的影响
Effects of Choline Supplemental Level on Laying Performance,Egg Quality and Reproductive Organ Development of Shaoxing Ducks during the Laying Period
摘要
Abstract
In order to study the effects of choline supplemental level on laying performance,egg quality and reproductive organ development of Shaoxing ducks during the laying period,and to explore the choline requirement of Shaoxing ducks during the laying period,different levels (0,250,500,750 and 1 000 mg/kg,respectively) of choline were supplemented in the corn-soybean meal based diet by a single-factor random experiment design.A total of 540 Shaoxing ducks during the initial egg-laying period were randomly assigned to 5 groups.Each group consisted of 6 replicates with 18 birds per replicate.The experiment lasted for 20 weeks.The results showed as follows:1) choline supplementation significantly improved the average egg weight (P ＜0.05).The 1 000 mg/kg group had the highest laying rate,average egg weight and daily egg weight and the lowest feed to egg ratio and malformed egg rate,but no significant differences were found compared with the 500 and 750 mg/kg groups (P ＞ 0.05).2) Choline supplemental level significantly affected the egg yolk color and eggshell thickness (P ＜ 0.05).The egg yolk color showed a decreasing trend with the choline supplemental level increasing,and that in 0,250,500 and 750 mg/kg groups was significantly higher than that in 1 000 mg/kg group (P ＜ 0.05),while no significant difference was found among other groups (P ＞ 0.05).The eggshell thickness in 500 mg/kg group was the highest and significantly higher than that in 0 and 750 mg/kg groups (P ＜ 0.05),while no significant difference was found among other groups (P ＞ 0.05).Choline supplemental level did not significantly affect the egg shape index,eggshell strength,Haugh unit and albumen height (P ＞ 0.05),but the Haugh unit and albumen height were increased with the choline supplemental level increasing,and the 500 mg/kg group had the highest egg shape index and eggshell strength.3)Choline supplemental level had no significant effects on ovarian index,oviductus length index,oviductus weight index,total weight of advantage follicle/ovarian weight,total weight of advantage follicle and advantage follicle number (P ＞ 0.05).The results suggest that choline supplementation in the corn-soybean meal based diet can improve the average egg weight,but reduce the egg yolk color.Considering laying performance and egg quality,the supplementation of 500 mg/kg choline in the corn-soybean meal based diet can satisfy the choline requirement of Shaoxing ducks during the laying period.关键词
产蛋期/绍兴鸭/胆碱/产蛋性能/蛋品质/生殖器官发育/需要量Key words
laying period/ Shaoxing duck/ choline/ laying performance/ egg quality/ reproductive organ development/ requirement分类
农业科技引用本文复制引用
马维英,王爽,黄江南,沈军达,徐翼虎,陶争荣,田勇,卢立志,林映才..饲粮胆碱添加水平对产蛋期绍兴鸭产蛋性能、蛋品质、生殖器官发育的影响[J].动物营养学报,2013,25(6):1307-1314,8.基金项目
国家水禽产业技术体系项目(CARS-43-2) （CARS-43-2）
畜禽健康养殖创新团队(2010R50027) （2010R50027）
