育成期京红1号母鸡饲粮赖氨酸需要量

发布时间：2018-11-17 12:53

【摘要】：本试验旨在研究育成期京红1号商品代母鸡的饲粮赖氨酸(Lys)需要量。选取450只8周龄京红1号商品代母鸡,随机分成5组,每组6个重复,每个重复15只鸡。分别饲喂Lys水平为0.56%、0.62%、0.68%、0.74%和0.80%的饲粮,试验期为9周。结果表明:随饲粮Lys水平的增加,9~17周龄京红1号母鸡的平均日增重(ADG)和群体均匀度均呈显著先升高再降低的二次曲线关系(P0.05),料重比(F/G)呈显著先降低再升高的二次曲线关系(P0.05);0.62%Lys组的ADG显著高于0.56%和0.80%Lys组(P0.05),F/G却显著低于以上2组(P0.05),0.68%Lys组的群体均匀度显著高于0.56%和0.80%Lys组(P0.05)。17周龄京红1号母鸡的体重、胸宽和胫长随饲粮Lys水平的增加均呈显著先升高再降低的二次曲线关系(P0.05);0.68%Lys组的体重、胸宽和胫长均显著高于0.74%和0.80%Lys组(P0.05)。17周龄京红1号母鸡的卵巢重量、卵巢指数、输卵管重量、输卵管指数及输卵管长度随饲粮Lys水平的增加呈显著先升高再降低的二次曲线关系(P0.05);0.68%Lys组的生殖器官发育指标均显著高于其他组(P0.05)。随饲粮Lys水平的增加,17周龄京红1号母鸡的卵巢中各级卵泡数均呈显著先增加后降低的二次曲线关系(P0.05);0.68%Lys组的总卵泡数、初级卵泡数、次级卵泡数和小黄卵泡数均显著高于其他组(P0.05)。根据17周龄京红1号母鸡的卵巢重、卵巢指数、总卵泡数、初级卵泡数和次级卵泡数各自拟合二次曲线,得出饲粮Lys需要量分别为0.65%、0.65%、0.64%、0.64%和0.64%。综上所述,推荐9~17周龄京红1号母鸡饲粮Lys需要量为0.64%~0.65%。
[Abstract]:The purpose of this experiment was to study the dietary lysine (Lys) requirement of the commercial hen Jinghong 1 during the growing period. 450 8-week-old Jinghong No. 1 commercial generation hens were randomly divided into 5 groups with 6 replicates in each group and 15 chickens in each replica. The Lys level was 0.560.62 and 0.68% and 0.80% respectively. The experiment period was 9 weeks. The results showed that with the increase of dietary Lys level, the average daily gain (ADG) and population evenness of Jinghong No. 1 hens at the age of 9 ~ 17 weeks were significantly increased and then decreased (P0.05). The ratio of feed to weight (FR / G) was decreased first and then increased (P0.05). The ADG of 0.62%Lys group was significantly higher than that of 0.56% and 0.80%Lys group (P0.05), but F / G was significantly lower than that of the above two groups (P0.05). The population evenness of 0.68%Lys group was significantly higher than that of 0.56% and 0.80%Lys group (P0.05). Chest width and shank length showed a conic curve relationship with the increase of dietary Lys level (P0.05). The weight, chest width and shank length of 0.68%Lys group were significantly higher than those of 0.74% and 0.80%Lys groups (P0.05). Fallopian tube index and tubal length showed a conic curve of first increasing and then decreasing with the increase of dietary Lys level (P0.05). The reproductive organ development index of 0.68%Lys group was significantly higher than that of other groups (P0.05). With the increase of dietary Lys level, the number of follicles in the ovary of 17-week-old Jinghong No. 1 hens showed a conic curve of increasing first and then decreasing (P0.05). The total number of follicles, the number of primary follicles, the number of secondary follicles and the number of small yolk follicles in 0.68%Lys group were significantly higher than those in other groups (P0.05). According to the conic curve of ovary weight, ovary index, total follicle number, primary follicle number and secondary follicle number of 17-week-old Jinghong No. 1 hens, the dietary Lys requirements were 0.65% 0.65% and 0.64%, respectively. 0.64% and 0.64%. To sum up, the dietary Lys requirement of 9 ~ 17 weeks old Jinghong No. 1 hens was recommended to be 0.64 and 0.65.
【作者单位】：中国农业科学院饲料研究所农业部饲料生物技术重点开放实验室生物饲料开发国家工程研究中心;
【基金】：基金项目:现代农业产业技术体系(CARS-41-K13) 家禽产业技术体系北京市创新团队(CARS-PSTP)
【分类号】：S831.5

【相似文献】