A study of puberty in Romney ewe lambs by oestrus detection, laparoscopy and progesterone assay

  • D Abba Institute of Agricultural Research for Development Wakwa IRAD Regional Centre B.P. 65 Ngaoundere, Cameroon
  • IJ Lean Agricultural Section, Imperial College, University of London, Wye, Ashford, Kent TN25 5AH, UK

Abstract

Attainment of puberty in Romney ewe lambs was studied at Wye Sheep Research Unit of the Imperial College (University of London) in the U.K. 77% of females exposed to rams during the breeding season reached puberty. Ovulation effectively accompanied first behavioural oestrus. The evidence of silent ovulation before pubertal oestrus and after the last oestrus of the breeding season was established.

Keywords: ewe lamb-puberty-ovulation-laparoscopy-progesterone

RESUME Une étude sur l=avènement de la puberté chez les agnelles Romney a eu lieu à l=unité de recherche des ovins de l=Imprial College (Université de Londres) à Wye au Royaume uni. 77% des agnelles ont atteint la puberté au cours de la saison de reproduction. L.oestrus pubertal était effectivement suivi des ovulations. L.évidence des ovulations avant l.oestrus pubertal et après le dernier oestrus de la saison de reproduction est confirmée.

Mots clés: agnelle-puberté-ovulation-laparoscopie-progesterone

Journal of the Cameroon Academy of Sciences Vol. 5(1) 2005: 29-35
Published
2006-06-02
Section
Articles

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print ISSN: 2617-3948