Paper Information

Journal:   ANIMAL SCIENCE RESEARCHES (FACULTY OF AGRICULTURE, UNIVERSITY OF TABRIZ)   2016 , Volume 26 , Number 1; Page(s) 43 To 50.
 
Paper: 

COMPARISON THE PREGNANCY RATES IN DIFFERENT SYNCHRONIZATION AND OVULATION PROTOCOLS IN KHUZESTAN BUFFALO

 
 
Author(s):  NEISI Z.*, MAMOUEI M., ROSHANFEKR H., TABATABAEI VAKILI S., SARI M.
 
* DEPARTMENT OF ANIMAL SCIENCE, RAMIN AGRICULTURE AND NATURAL RESOURCES UNIVERSITY OF KHUZESTAN, IRAN
 
Abstract: 

OBJECTIVES: This study was evaluated the pregnancy rates of fixed time artificial insemination after synchronization of follicular wave Ovsynch+ CIDR and Co-synch + CIDR protocols compared with artificial insemination after estrus detection in select synch protocol.
METHODS: In this study, 42 cyclic buffaloes, uncertain stage of the estrous cycle, were randomly assigned into 3 groups. 1) Ovsynch + CIDR (n = 14), administration of GnRH at days 0 and 9, PGF2? at day 7 and insertion CIDR from days 0 to 7. Buffaloes of this group were inseminated 16 h after the second GnRH administration. 2) Co-synch + CIDR (n = 14), insertion the CIDR and administration of GnRH at day 0, administration the PGF2a at day 7 with remove the CIDR, and day 9 with second administration of GnRH, artificial insemination was performed.3) Select synch + CIDR (n = 14), hormone treatments of this group were similar to two other groups. But, there was not the second injection of GnRH and artificial insemination was performed after estrus detection during 3 days.
RESULTS: The pregnancy rates of Ovsynch + CIDR (28.57
±12.53%), Co-synch+ CIDR (50±13.87%) and Select synch + CIDR (28.57±12.53%) had not significantly difference.
CONCLUSIONS: In summary, it can be concluded that Co-synch + CIDR protocol due to non-significantly higher pregnancy rate is more effective method, when compared with other protocols. and non-necessary to estrus detection as well as low labor.

 
Keyword(s): ARTIFICIAL INSEMINATION (AI), ESTRUS SYNCHRONIZATION, KHUZESTAN BUFFALO, PREGNANCY RATES
 
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