Influence of mating time on some serum biochemical and endocrine parameters of rabbit does following oestrus synchronization

  • Imaben Grace Opaluwa-Kuzayed Department of Theriogenology and production, University of Jos, Plateau, Nigeria
  • Ambrose Alikidon Voh National Animal Production Research Institute, Shika - Zaria, Nigeria
  • Lushaikyaa Allam Department of Theriogenology and production, Ahmadu Bello University, Zaria, Nigeria
  • Grace Iyeghe-Erakpotobor National Animal Production Research Institute, Shika - Zaria, Nigeria
  • Joy Iyojo Itodo Department of Animal Science, Faculty of Agriculture, Federal University of Lafia, Nasarawa, Nigeria
  • Wilson Ochife Echekwu Department of Theriogenology and production, University of Jos, Plateau, Nigeria
Keywords: Rabbits, Estrus, Estrogen, Progesterone, Gonadotropin-releasing hormone


Studies on the influence of mating time on some serum biochemical/endocrine parameters were carried out using forty adult rabbits does, following estrus synchronization, artificial insemination, and natural service. The rabbit does use were New Zealand White, Dutch, California, Chinchilla, and Gray breeds.  They were divided into four group types of 10 rabbits does with different breeds each, designated as natural service (NS), Artificial Insemination (A.I), Natural service + Gonadotropin (NS + GnRH), Artificial Insemination + Gonadotropin (A.I + GnRH). The NS + GnRH and A. I + GnRH rabbit does were synchronized using 0.5 ml Gonadotropin-Releasing Hormone (GnRH) analog (Lecirelin) i.m injection at point of insemination/Service. The mean albumin value differs significantly (P≤0.05) with 3.5 ± 0.2 mg/l before mating and 2.9 ± 0.2 mg/l after mating. Glucose mean values also differ significantly (P≤0.05); it was higher before mating with 96.4 ± 4.8 mg/dl than after mating with 68.3 ± 2.8 mg/dl. Total protein mean values differed significantly (P≤0.05) having 5.9 ± 0.1 g/l before mating, and 5.1 ± 0.1g/l after mating. Oestrogen values were 21.3 ± 1.7 pg/ml before mating and 17.8 ± 0.8 pg/ml after mating. Mean progesterone value before mating was 3.8 ± 0.41 ng/mL and 15.0 ± 2.9 ng/mL after mating. Mean serum biochemical parameters were higher before mating than after mating and were within the normal range. It was concluded that estrus synchronization, artificial insemination, and natural service had an effect on the biochemical and endocrine response of rabbit does.


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