Genetic and nongenetic effects on the number of ovarian follicles and oocyte yield and quality in the bovine local (Oulmes Zaer), exotic breeds and their crosses in Morocco

• Published in: African journal of biotechnology 2005-01, Vol.4 (1), p.9-13
• Main Authors: Fihri, A F, Lakhdissi, H, Derqaoui, L, Hajji, K, Naciri, M, Goumari, A
• Format: Article
• Language: English
• ISSN: 1684-5315; 1684-5315

The effects of genetic and non genetic factors on the number of ovarian follicles and oocyte yield and quality in the bovine local breed (Oulmes Zaer), exotic breeds and their crosses in Morocco was investigated. In this study, females in very bad body conditions (BCS < 2) were not slaughtered and the average. The body condition scores (BCS) was 2.94 plus or minus 0.89. Although some individual values were out of the normal ranges, mean values of total proteins, albumin, urea, beta -OH and GOT remain normal and were 77.83 plus or minus 8.74 g/1, 32.4 plus or minus 4.41g/1, 4.43 plus or minus 2.13 mmol/1, 0.83 plus or minus 0.48 mmol/1 et 45.55 plus or minus 11.95 UI/1, respectively. The mean number of ovarian follicles per cow (2-8 mm) was high (22.98 plus or minus 8.41) whereas the oocyte yield (and 2.60 plus or minus 1.53) was very low. The effects of genetic group, age and BCS on the number of follicles, oocyte yield and the quality were significant.