Effect of different dietary energy levels on the reproductive performance of Kivircik sheep under a semi-intensive system in the South-Marmara region of Turkey


Koyuncu M., Canbolat Ö.

JOURNAL OF ANIMAL AND FEED SCIENCES, vol.18, no.4, pp.620-627, 2009 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 18 Issue: 4
  • Publication Date: 2009
  • Doi Number: 10.22358/jafs/66436/2009
  • Journal Name: JOURNAL OF ANIMAL AND FEED SCIENCES
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.620-627
  • Keywords: sheep, energy, reproduction, RASA-ARAGONESA EWES, OVULATION RATE, EMBRYO SURVIVAL, LUPIN GRAIN, MERINO EWES, FOOD-INTAKE, SARDA EWES, PRODUCTIVITY, PREGNANCY, GILTS

Abstract

The objective of the study was to determine the effects of four dietary energy levels (L(1) - 10.3, L(2) - 11.0, L(3) - 11.6 and L(4) - 12.2 MJ ME per kg DM) on oestrus synchronization and fertility in Kivircik ewes. Eighty Kivircik ewes were randomly allocated in equal numbers to the four dietary energy treatments. The groups were treated with intra vaginal sponges containing 40 mg FGA (fluorogestone acetate) for a period of 14 days and 500 IU pregnant mare serum gonadotropin was injected intramuscularly after sponge withdrawal.