动物营养学报Issue(3)：754-759,6.DOI:10.3969/j.issn.1006-267x.2014.03.027
冬季饲粮维生素 A水平对蛋鸡生产性能和蛋品质的影响
Effects of Dietary Vitamin A Level on Performance and Egg Quality of Laying Hens in Winter
崔桂山 1杨在宾 2杨维仁 1姜淑贞 1张桂国 1宋振帅1
作者信息
- 1. 山东农业大学动物科技学院，泰安 271018
- 2. 潍坊亨懋动物保健品有限公司，潍坊 261041
- 折叠
摘要
Abstract
This experiment was conducted to study the effects of dietary vitamin A level on performance and egg quality of laying hens in winter. A total of 525 healthy Hy-line laying hens were randomly divided into 5 treatments with 5 replicates per treatment and 21 hens per replicate. Hens in the control group were fed a basal diet ( contained 8 000 IU/kg vitamin A) , and the others in experimental groups were fed diets which contained 10 500, 13 000, 15 500 and 18 000 IU/kg vitamin A, respectively. All groups had the same level of other vi-tamins. The experiment lasted for 42 days. The results showed as follows: 1 ) compared with the control group, the egg production and laying rate in experimental groups were significantly increased (P<0. 05), but the ratio of feed to egg (F/G) was significantly decreased (P<0. 05). The egg production, laying rate and F/G showed a quadratic equation change with dietary vitamin A level increasing ( P<0 . 05 ) . Dietary vitamin A level had no significant effects on feed intake, egg weight and the rate of broken eggs (P>0. 05). 2) With dietary vitamin A level increasing, the eggshell hardness showed linear and quadratic equation changes ( P <0 . 05 ) , and the eggshell proportion showed a quadratic equation change ( P<0 . 05 ) . Dietary vitamin A level had no significant effects on egg shape index, eggshell thickness, albumen height, yolk color, Haugh unit and yolk proportion ( P>0 . 05 ) . 3 ) Dietary vitamin A level had no significant effect on component of eggs ( P>0. 05). In conclusion, dietary vitamin A level from to 10 500 to 15 500 IU/kg can obtain the best perform-ance and egg quality of laying hens in winter.关键词
蛋鸡/维生素A/生产性能/蛋品质/蛋成分Key words
laying hen/vitamin A/performance/egg quality/component of eggs分类
农业科技引用本文复制引用
崔桂山,杨在宾,杨维仁,姜淑贞,张桂国,宋振帅..冬季饲粮维生素 A水平对蛋鸡生产性能和蛋品质的影响[J].动物营养学报,2014,(3):754-759,6.
