EFFECT OF GENOTYPE ON MORPHOMETRIC TRAITS AND BODY TEMPERATURE OF THREE GENOTYPES OF CHICKEN (GALLUS GALLUS DOMESTICUS) RAISED IN THE HUMID TROPICAL STRESSFUL ENVIRONMENT.
Authors/Creators
- 1. Laboratory of Biology and Animal Cytology, Research and Training Unit of Natural Sciences-University of Nangui Abrogoua, 02 BP 801 Abidjan 02, Côte d'Ivoire.
- 2. Laboratory of Genetic and Bioresources Improvement, Research and Training Unity- University of Nangui Abrogoua, 02 BP 801 Abidjan 02, Côte d'Ivoire.
Description
The objective of this work was to assess the level of stress sensitivity of three genotypes of chickens differing in body weight. A total of 62 birds of the 3 genotypes (21 local chicken, 20 commercial naked neck and 21 fully feathered hybrid chicken were reared in confinement together, under the same conditions. Body parameters and body temperature (BT) at 30 weeks of age was recorded for each genotype 3 days. All other body parameter traits were differed significantly among the genotypes. Commercial naked neck and fully feathered had better in almost all the traits. However, at day1, BT1 were 41.435 ?C, 41.709 ?C and 41.915 ?C respectively for local chickens, naked necks and fully feathered hybrids under 37.1?C of ambient temperature and relative humidity of 46 %.. At day 2, the BT2 were 41.271 ?C, 41.637 ?C and 41.825 ?C respectively for local chickens, the naked necks and the fully feathered hybrids, under 36 ?C of ambient temperature and relative humidity of 40 %. At day 3, the BT3 were 41.369 ?C, 41.585 ?C and 41.784 ?C respectively, under 35.2 ?C of the ambient temperature and relative humidity of 53 %. These last results showed that the local chickens on susceptibility to humid tropical heat stress were smaller than in commercial hybrid chickens.
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