COMPARATIVE STUDY ON OESTRUS RESPONSES USING SINGLE AND DOUBLE TREATMENTS OF PGF2? (LUTALYSE®) IN NIGERIAN JENNIES

Authors

  • Hassan, R. National Animal Production Research Institute, Ahmadu Bello University, Shika Zaria, Nigeria.
  • Rekwot, P. I.
  • Bawa, E. K.
  • Mohammed, A. K.
  • Lawal M.
  • Oke-Egbodo, B. E.
  • Bello, T. K.
  • Hussaini, M.
  • Umar, U. A.
  • Maikaji, F. S.

Keywords:

Nigerian Jennies, Oestrus Responses, Lutalyse, Oestrus Cycle, Oestrus Synchronization, Intramuscular Injection.

Abstract

This study was carried out to evaluate oestrus responses using single and double treatments of PGF2? (Lutalyse®) in Nigerian Jennies. Eight (8) cycling Jennies aged 3.5±1.0 years were used for this study. The jennies were randomly assigned to 2 groups of 4 jennies each; Group 1 (n=4): jennies treated with a single injection of 10mg of Lutalyse®; Group 2 (n=4): jennies treated with double injections of 10 mg of Lutalyse®. Blood was collected from the jennies for extraction of serum, for progesterone and oestradiol estimation using Enzyme-Linked Immunosorbent Assays (ELISA). Groups 1 and 2, had time to onset of oestrus of 10.07 ± 4.91 and 3.98 ± 0.95 hours (P>0.05), duration of oestrus of 24.0 ± 0.0 and 78.0 ± 22.7 hours (P<0.05), oestrus response rate of 25 and 75% and intensity of synchronization within 48 hours was 50 and 75% (P<0.01), respectively. From this study it was established that the oestrus period and oestrus cycle length of synchronized Jennies was 8 days and 25 days in Nigerian indigenous Jennies. In conclusion, synchronization of Jennies is possible using exogenous PGF2?, however, double treatment of Lutalyse® had a better response, therefore, it is more efficient than single treatment in oestrus synchronization of Jennies. This study has shown that, plasma progesterone and oestradiol analyses are a valuable tool for the study of fundamental reproductive endocrinology in Nigerian Jennies.

Published

2017-06-30