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Economic values of body weight, reproduction and parasite resistance traits for a Creole goat breeding goal

  • M. Gunia (a1), N. Mandonnet (a1), R. Arquet (a2), G. Alexandre (a1), J-L. Gourdine (a1), M. Naves (a1), V. Angeon (a3) and F. Phocas (a4)...

Abstract

A specific breeding goal definition was developed for Creole goats in Guadeloupe. This local breed is used for meat production. To ensure a balanced selection outcome, the breeding objective included two production traits, live weight (BW11) and dressing percentage (DP) at 11 months (the mating or selling age), one reproduction trait, fertility (FER), and two traits to assess animal response to parasite infection: packed cell volume (PCV), a resilience trait, and faecal worm eggs count (FEC), a resistance trait. A deterministic bio-economic model was developed to calculate the economic values based on the description of the profit of a Guadeloupean goat farm. The farm income came from the sale of animals for meat or as reproducers. The main costs were feeding and treatments against gastro-intestinal parasites. The economic values were 7.69€ per kg for BW11, 1.38€ per % for FER, 3.53€ per % for DP and 3 × 10−4€ per % for PCV. The economic value for FEC was derived by comparing the expected profit and average FEC in a normal situation and in an extreme situation where parasites had developed resistance to anthelmintics. This method yielded a maximum weighting for FEC, which was −18.85€ per log(eggs per gram). Alternative scenarios were tested to assess the robustness of the economic values to variations in the economic and environmental context. The economic values of PCV and DP were the most stable. Issues involved in paving the way for selective breeding on resistance or resilience to parasites are discussed.

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Keywords

Economic values of body weight, reproduction and parasite resistance traits for a Creole goat breeding goal

  • M. Gunia (a1), N. Mandonnet (a1), R. Arquet (a2), G. Alexandre (a1), J-L. Gourdine (a1), M. Naves (a1), V. Angeon (a3) and F. Phocas (a4)...

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