Reproductive performance and superovulatory endangered Cameroonian Namshi breed (Bos taurus)

Authors

  • L. D. Massoma University of Douala, P.O. Box 24157, Douala Cameroon
  • N. M. Ngo University of Douala, P. O. Box 24157, Douala-Cameroon
  • J. Tchoumboue University of Dschang
  • O. Messono

DOI:

https://doi.org/10.51791/njap.v31i1.1492

Keywords:

Oestrus, anoestrus postpartum, superovulation

Abstract

This study was undertaken to determine the reproductive performance of the endangered Bos-taurus Namshi breed of Cameroon. Ovarian response to superovulatory treatment was also evaluated. The following observations were recorded. The average calf mortality rate was 25.71% while the average birth weight was 12.22±0.82kg. The percentage of animals in oestrus during the wet and dry season was respectively 60% and 33.4%. The oestrus cycle length and the oestrus duration were respectively 20.80±1.20d and 7.00±0.80h: corresponding dry season figures for those parameters were 19.00±0.94d and 6.00±0.7h respectively. In the dry season the manifestation of oestrus was 80º during the day and 20º at night while in the wet season it was 55.55% and 44.5% respectively. Postpartum oestrus was at 18 months. The ovarian response to superovulatory treatment was about 6.40±2.50 ovulations per cow. Results indicate that the scarcity of Bos-taurus Namshi breed in Camerron could be attributed to high calf mortality rate, low calving rate and long postpartum periods. Embryo transfer could be a way to rapidly multiply this breed.  

Author Biographies

L. D. Massoma, University of Douala, P.O. Box 24157, Douala Cameroon

Faculty of Science, Department of Animal Physiology and Biology

N. M. Ngo, University of Douala, P. O. Box 24157, Douala-Cameroon

Faculty of Science, Department of Animal Physiology and Biology

J. Tchoumboue, University of Dschang

Department of Zootehcnic

O. Messono

IRAD de Wakwa

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Published

2021-01-07

Issue

Section

Articles