摘要
为探讨粗酶制剂促进鸡生长的作用机制，通过三系列试验研究了粗酶制剂添加于大麦日粮中对不同基因型或生理状况的鸡血液代谢激素的影响。结果表明，粗酶制剂处理，使蛋用雏鸡Ｔ３（三碘甲腺原氨酸）、ＴＳＨ（促甲状腺激素）和Ｔ３／Ｔ４（甲状腺素）显著提高（Ｐ＜０．０１或Ｐ＜０．０５）；２１日龄肉鸡Ｔ３、Ｉｎｓ（胰岛素）、Ｔ３／Ｔ４和Ｉｎｓ／Ｇｌｕｃ（胰高血糖素）提高（Ｐ＜０．０５）；４２日龄肉鸡Ｔ３、ＧＨ（生长激素）、Ｉｎｓ、Ｔ３／Ｔ４和Ｉｎｓ／Ｇｌｕｃ显著提高（Ｐ＜０．０５），而Ｇｌｕｃ显著降低（Ｐ＜０．０５）；生长后期鸡Ｔ３、ＧＨ和Ｔ３／Ｔ４显著升高（Ｐ＜０．０５）。结果提示，粗酶制剂可通过调节代谢激素的分泌而提高鸡的生产性能。
The effects of crude enzyme preparations supplementing to barley diets on blood metabolic hormones in the chicken of different genetic strain or physiologic status were investigated to search into the mechanism for the crude enzyme preparation to promote growth in chickens. As the results, enzyme treatment increased blood T 3 (P<0.05), TSH (P<0.01) and T 3/T 4 (P<0.05) in egg strain chickens. Meanwhile enzyme treatment resulted in the increase of blood T 3 (P<0.05), insulin (P<0.05), GH (P<0.05), T 3/T 4 (P<0.05) and insulin/glucagon (P<0.05) in 21 D or 42 D old meat strain chickens, but the decrease of blood glucagon in 42 D old meat strain. Besides, higher blood T 3 (P<0.05), GH (P<0.05) and T 3/T 4 (P<0.05) in cockerel resulted from enzyme treatment. The results suggested that the crude enzyme preparations can increase the growth of chicken by modulating the metabolic hormone secretion.
出处
《中国兽医学报》
CAS
CSCD
北大核心
1998年第6期577-580,共4页
Chinese Journal of Veterinary Science
基金
加拿大IDRC资助
国家自然科学基金
关键词
粗酶制剂
大麦日粮
激素
鸡
饲料添加剂
crude enzyme preparation
barley diet
hormones
blood
chicken
