EFFECTS OF EXOGENOUS CALCIUM OR HUMAN CHORIONIC GONADOTROPIN (hCG) ON SOME REPRODUCTIVE HORMONES, TESTICULAR AND THYROID ACTIVITIES IN MALE CHICKENS. | ||||
| Assiut Veterinary Medical Journal | ||||
| Article 5, Volume 40.2, Issue 80, January 1999, Page 72-87 PDF (5.61 MB) | ||||
| Document Type: Research article | ||||
| DOI: 10.21608/avmj.1999.182325 | ||||
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| Authors | ||||
| M.Z. Attia; K.A. Attia; Sohair Y. Saleh | ||||
| Dept. of Physiology, Fac. Vet. Med., Cairo Univ. | ||||
| Abstract | ||||
| In the present investigation exogenous administration of calcium or (hCG) to mature male chickens chorionic gonadotropin human modulated the secretions and correlations between different reproductive hormones, either pituitary or gonadal hormones. A stimulatory effect on thyroid gland with an adverse effect on testicular activity were observed with calcium administration, while an inhibitory effect on thyroid gland with a stimulatory effect on testicular activity were observed with hCG administration. So, it is advisable to use calcium or hCG in poultry farm, especially in mature male birds, with caution. Further studies on the use of calcium in combination with hCG should be taken in considerations. | ||||
| Keywords | ||||
| Key Words: Calcium; hCG; Reproductive hormones; Thyroid activity in male | ||||
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