二氢吡啶(Diludin)对产蛋鸡内分泌的影响

１ ０２４羽３００日龄罗曼蛋鸡随机分４组，分别饲喂二氢吡啶（Ｄｉｌｕｄｉｎ）添加量０，１００，１５０，２００ ｍｇ／ｋｇ的４种饲粮，于饲喂后第３０日和第８０日采血和屠宰，研究其对蛋鸡内分泌功能的影响。结果显 示：Ｄｉｌｕｄｉｎ均显著地提高了腺垂体和血清中ＦＳＨ，ＬＨ含量，其中垂体ＦＳＨ和ＬＨ含量随饲喂剂量提高 而增加，血清ＦＳＨ和ＬＨ含量以１５０ ｍｇ／ｋｇ组效果最佳；Ｄｉｌｕｄｉｎ提高了血清Ｔ３含量，Ｔ４差异不显著， ３０日Ｔ３随饲粮中Ｄｉｌｕｄｉｎ递增而增加，８０日１５０，２００ ｍｇ／ｋｇ组与对照组差异显著；饲粮中添加Ｄｉｌｕｄｉｎ 具有改进血清雌二醇（Ｅ２）水平，其中８０ 日 １５０，２００ ｍｇ／ｋｇ组与对照组差异显著；１５０ ｍｇ／ｋｇ Ｄｉｌｕｄｉｎ显 著提高血清中孕酮（Ｐ４）含量；饲粮中添Ｄｉｌｕｄｉｎ显著提高下丘脑和腺垂体中ｃＡＭＰ含量。

Effects of Diludin on endocrnolongy of laying hens.

The experiment was conducted to study the effects of Diludin on endocrnology of laying hen. 1024 ROM hens were divided into 4 groups, each of which included four replicates of 64 hens each ,The control group received the basal diet ,and the other 3 received the same basal diet supplemented with 100 , 150 and 200 mg/kg Diludin respectively. After 30 d and 80 d 16 hens of each treatment were picked out to be slaughtered , Samples of blood,hypothalamus and pituitary were collected for hormones analysis. Addi- tion of Diludin to diet significantly increased the concentrations of follicle-stimulating hormone (FSH) and luternizing hormone (LH) in anterior pituitary and serum. The concentrations of FSH and LH in anterior pituitary were increased with the increasing of Diludin added , and the level of FSH and LH in serum were highest in 150 mg/kg treatment. The level of triiodothyronine (T3) in serum were significantly increased with the increasing level of Diludin in 30 d , and in 80 d the level of T3 in serum were significantly im- proved in 150 and 200 mg/kg treatments. No significant difference was observed in thyroxine of serum in each treatments. Adding Diludin to diet improved the level of estradiol (E2) in serum, and it was signifi- cantly increased than control in 150 and 200 mg/kg treatment in 80 d . Adding with 150 mg/kg Diludin significantly increased serum progesterone (P4) concentrations. Addinq Diludin to diet significantly in- creased concentrations of cAMP in hypothalamus and anterior pituitary.