Simulated selection responses for breeding programs including resistance and resilience to parasites in Creole goats

M. Gunia, F. Phocas, J.L. Gourdine, P. Bijma, N. Mandonnet

Research output: Contribution to journalArticleAcademicpeer-review

3 Citations (Scopus)

Abstract

The Creole goat is a local breed used for meat production in Guadeloupe (French West Indies). As in other tropical countries, improvement of parasite resistance is needed. In this study, we compared predicted selection responses for alternative breeding programs with or without parasites resistance and resilience traits. The overall breeding goal included traits for production, reproduction and parasite resilience and resistance to ensure a balanced selection outcome. The production traits were body weight (BW) and dressing percentage (DP). The reproduction trait was fertility (FER), which was the number of doe kiddings per mating. The resistance trait was worm fecal egg count (FEC), which is a measurement of the number of gastro-intestinal parasite eggs found in the feces. The resilience trait was the packed cell volume (PCV), which is a measurement of the volume of red blood cells in the blood. DP, BW and FEC were measured at 11 mo of age, which is the mating or selling age. FER and PCV were measured on females at each kidding period. The breeding program accounting for the overall breeding goal and a selection index including all traits gave annual selection responses of 800 g for BW, 3.75% for FER, 0.08% for DP, -0.005 ln(eggs/g) for FEC, and 0.28% for PCV. The expected selection responses for BW and DP in this breeding program were reduced by 2% and 6%, respectively, compared to a breeding program not accounting for FEC and PCV. The overall breeding program, proposed for the Creole breed, offers the best breeding strategy in terms of expected selection responses, making it possible to improve all traits together. It offers a good balance between production and adaptation traits and may present some interest for the selection of other goat breeds in the tropics.
Original languageEnglish
Pages (from-to)572-581
JournalJournal of Animal Science
Volume91
Issue number2
DOIs
Publication statusPublished - 2013

Keywords

  • meat quality traits
  • nematode infections
  • genetic-parameters
  • production systems
  • gastrointestinal helminths
  • small ruminants
  • dairy sheep
  • merino ewes
  • schemes
  • contamination

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