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Animal Science Papers and Reports

.: Home > Animal Science Papers and Reports > 2004 > Volume 22 Number 3 > Jَzef Klewiec1, El؟bieta Martyniuk2 Miros³aw Gabryszuk1, Antoni Baranowski1

Ovulation rate and prolificacy in Booroola × Olkuska crossbred ewes

Jَzef Klewiec1, El؟bieta Martyniuk2 Miros³aw Gabryszuk1, Antoni Baranowski1
1 Polish Academy of Sciences Institute of Genetics and Animal Breeding, Jastrzêbiec, 05-552 Wَlka Kosowska, Poland 2 Department of Genetics and Animal Breeding, Warsaw Agricultural University, Ciszewskiego 8, 02-786 Warsaw, Poland
Abstract :

The study presents a comparison of ovulation rate (CL number) and litter size between pure Booroola (BB) and their reciprocal crosses (F1 and F2) with Olkuska sheep. As these breeds express a high reproduction potential and in the same time differ significantly in other performance traits affecting lamb production, it was assumed that their crosses might combine beneficial characteristics of both. When the total numbers of CL were analysed the ovulation rate in BB appeared by 0.6 higher (P.0.002) than in crossbred ewes (F1 and F2 pooled). However, no such difference was ascertained when analysing the maximum CL numbers. Ovulation rate and litter size did not differ between F1 and F2 crossbred ewes.

Keywords :
Booroola / crossing / Olkuska sheep / litter size / ovulation rate / sheep

Date Deposited : 11 Aug 2011 10:38

Last Modified : 11 Aug 2011 10:38

Official URL: http://www.ighz.edu.pl/

Volume 22, Number 3, - 2004

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