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2000 - 138 p.

Importance of a sheep selection programme for prolificacy

Oliván A., Pardos L.

The importance of a programme of genetic selection in sheep for meat is studied, whose main objective is to improve prolificacy. We use structural, technical and economic data obtained via the Programme of Technical-Economic Management which has been developed since 1993 by the livestock cooperative Carne-Aragón in collaboration with the Escuela Universitaria Politécnica of Huesca. This has allowed the use of data from more than 110 Aragonese sheep farms for 6 years (665 in total). The main breed used is the Rasa Aragonesa. Conventional statistical analyses have been carried out which relate the prolificacy of the different flocks studied to the economic results obtained, expressed in pesetas adjusted to a 1998 base, and grouped according to different feeding costs (nutritional management) and reproductive results of the farms (reproductive management). The differences, in all cases, are significant.

Mots-clés    

AMELIORATION DES ANIMAUX, BREBIS, CRITERE DE SELECTION, PERFORMANCE DE REPRODUCTION, VIANDE

Citer cet article    

Oliván A., Pardos L. Importance of a sheep selection programme for prolificacy. In : Gabiña D. (ed.). Analysis and definition of the objectives in genetic improvement programmes in sheep and goats. An economic approach to increase their profitability . Zaragoza : CIHEAM, 2000. p. 93-100. (Options Méditerranéennes : Série A. Séminaires Méditerranéens; n. 43). Meeting of the Sub-Network on Genetic Resources of the FAO-CIHEAM Inter-Regional Cooperative Research and Development Network on Sheep and Goats, 1999/11/18-20, Zaragoza (Spain). http://om.ciheam.org/om/pdf/a43/00600473.pdf