BLOOD CORTISOL, TRIIODTHYRONINE (T3) AND THYROXINE (T4) LEVELS AND THEIR RELATION TO REPRODUCTIVE PERFORMANCE IN PRE AND POSTPARTUM PERIODS IN EGYPTIAN BUFFALOES .

Ashour,, A. M.; Badr, H. M.; Fahmy, S.

doi:10.21608/jappmu.2002.257099

	BLOOD CORTISOL, TRIIODTHYRONINE (T3) AND THYROXINE (T4) LEVELS AND THEIR RELATION TO REPRODUCTIVE PERFORMANCE IN PRE AND POSTPARTUM PERIODS IN EGYPTIAN BUFFALOES .
Journal of Animal and Poultry Production
Article 3, Volume 27, Issue 11, November 2002, Page 7291-7300 PDF (11.88 MB)
Document Type: Original Article
DOI: 10.21608/jappmu.2002.257099
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Authors
A. M. Ashour,¹; H. M. Badr¹; S. Fahmy²
¹Dept. of Animal Prod., Fac. of Agric., AI-Azhar Univ., Cairo, Egypt.
²Dept. of Animal Prod., Fac. of Agric., AI-Azhar Unlv., Asslut, Egypt.
Abstract
The present study was carried out of the Experimental station belonging to the Department of Animal Production, Faculty of Agriculture, AI- Azhar University. Blood samples were taken from 23 pregnant buffaloes at 60 days prepartum every 15 days, at parturition and until 90 days postpartum. Serum cortisol. T3 and T. were assayed. Cortisol level was almost constant and increased (P< 0.05) steadily at parturition, After parturition was declined then increased until 90 days, postpartum. Concentration of cortisol was lower in buffaloes which had did not exhibit estrus than buffaloes which had exhibit estrus. Statistically non-significant. Triiodothyronine (Tal and thyroxine (T.) showed no significant from 60 days prepartum until 90 days postpartum. However. the levels of T3 and T4 were increased gradually towards parturition. After parturition were decreased and fluctuated until 90 days postpartum. In buffaloes which had exhibit estrus, The levels of T 3 and T 4 were higher. non- significant, than buffaloes which had did not exhibit estrus.
Keywords
Buffalo; late pregnancy; parturition; postpartum; Cortisol; T3 and T4


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