TITLE:
Evaluation of two methods of estrus synchronization of cattle in Chad
AUTHORS:
Vounparet Zeuh, Mopate Logtene Youssouf, Nadjilem Dingamtar, Djonret Dezoumbe
KEYWORDS:
Cattle; Estrus Synchronization; Pregnancy; Cost; Chad
JOURNAL NAME:
Open Journal of Animal Sciences,
Vol.4 No.1,
January
6,
2014
ABSTRACT: The results of an artificial insemination experiment
carried out in the suburban area of N’Djamena are here reported. Two methods of
synchronization (Norgestomet combination/estradiol/PGF2a/PMSG and
PGF2a only)
were used with Chadian zebu and crossed breeds in 2007 and 2008. Females were
inseminated after induction of estrus with semen of French Normand breed. The
fertility rate was low with PGF2a (29.41%).
The results obtained with the combination of several hormones were better
(66.66%). The survival rates of crossbreeds were particularly low, 40% in 2007
and 33.33% in 2008, mainly due to the traditional management of the herd and
the lack of technical support. The insemination cost of a cow was 39,550 F CFA
in 2007 with PGF2a and
59,200 F CFA in 2008 with the method consisting of combining of four hormones.
The cost of producing a calf in those two years was very high, 134,470 F CFA in
2007 and 118,400 F CFA in 2008.