CAJ | 학술논문

[目的]探讨不同添加剂量的半胱胺（CS）对产蛋后期蛋鸡生产性能及激素水平的影响，摸索最适添加剂量。[方法]选择来源相同，43周龄产蛋后期花凤鸡576只，随机分为6组（n=96），每组3个重复。即I组（空白对照组）、II组（CS：100mg／kg）、Ⅲ组（CS：150mg，kg）、Ⅳ组（CS：200mg／kg）、V组（CS：250mg／kg）、VI组（CS：300mg／kg）。试验期为21d，分别在试验开始后的第1、8、15、22天采样，进行料蛋比、产蛋率、血清激素水平的检测。[结果]试验结果显示CS降低了产蛋后期蛋鸡的料蛋比、提高了产蛋率并缓解了雌激素水平的骤降。[结论]CS对产蛋后期蛋鸡生产性能及雌激素水平的降低具有一定的缓解作用．
[목적]탐토불동첨가제량적반광알（CS）대산단후기단계생산성능급격소수평적영향，모색최괄첨가제량。[방법]선택래원상동，43주령산단후기화봉계576지，수궤분위6조（n=96），매조3개중복。즉I조（공백대조조）、II조（CS：100mg／kg）、Ⅲ조（CS：150mg，kg）、Ⅳ조（CS：200mg／kg）、V조（CS：250mg／kg）、VI조（CS：300mg／kg）。시험기위21d，분별재시험개시후적제1、8、15、22천채양，진행료단비、산단솔、혈청격소수평적검측。[결과]시험결과현시CS강저료산단후기단계적료단비、제고료산단솔병완해료자격소수평적취강。[결론]CS대산단후기단계생산성능급자격소수평적강저구유일정적완해작용．
[Objective] The aim was to investigate the effects of different doses of cysteamine （CS） on the production performance and hormone levels of hens during late laying period to find out the most appropriate adding dose. [Method] 576 43-week old broilers from the same source were randomly divided into 6 treatments （n=96） with 3 replicates, among them group Ⅰ , as the control group, was provided with basic diet, while group Ⅱ,Ⅲ, Ⅳ,Ⅵ and Ⅵwere fed with basic diet supplemented with cysteamine at the level of 100, 150, 200, 250 and 300 mg/kg, respectively. The experimental period was 21 days, and the laying rate, ratio of feed to egg and hormone levels of serum were detected on the 1~, 8a, 15~ and 22~ day. [Result] The cysteamine degraded the ratio of feed to egg, raised the laying rate, and eased the slump of the estrogen level. [Conclusion] Cysteamine can relieve the fall of production performance and estrogen level of hens during late laying period.