Amelioration de la Productivite des Ovins par Croisement

I. Boujenane

Amelioration de la Productivite des Ovins par Croisement

于Livestock in the mediterranean cereal production systems

著者：

I. Boujenane

I. Boujenane Département des Productions Animales, Institut Agronomique et Vétérinaire Hassan II, B.P. 6202 Rabat-Instituts, Maroc

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类型:: 章节

Page Range:: 177–179

DOI:: https://doi.org/10.1163/9789004684607_033

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Summary

Three sheep breeding schemes were compared in a cereal production system: 1) purebred Sardi, 2) three-way crossbreeding involving a meat breed, the prolific D’man breed and the native Sardi breed, and 3) synthetic breed having 50% D’man and 50% Sardi genes. The traits studied were fertility (conception rate), prolificacy, lamb survival, lamb weight at 90 days, ewe productivity (litter weight at 90 days), and dressing percentage of lamb carcasses. It appears that ewe productivity from schemes 1, 2 and 3 were 18.6 kg, 31.1 kg and 30.0 kg per lambing, respectively, and dressing percentages were 53%, 56% and 55%, respectively. It was concluded that crossbreeding of sheep, in a cereal production system, is by far better than purebreeding, regardless of its practical difficulties on the field.

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Livestock in the mediterranean cereal production systems

Proceedings of the International Symposium organized by EAAP, CIHEAM and ANPA, Rabat

ISBN:: 9789004684607

出版社:: Wageningen Academic

印刷出版日期:: 01 Jan 1992

Subjects
- Life Sciences
  - General
  - Animal & Veterinary

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Amelioration de la Productivite des Ovins par Croisement

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Livestock in the mediterranean cereal production systems

Proceedings of the International Symposium organized by EAAP, CIHEAM and ANPA, Rabat

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