Abstract:
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performance, carcass characteristics and meat chemical composition traits of
chickens under hot climatic conditions. Two exotic meat strains (Hybro and
Hubbard) and three Sudanese native chicken ecotypes (Bare- neck, Large
Baladi and Betwil) were used for this purpose. Data were analyzed using
General linear model (GLM) of SAS (2007). Results revealed that genotype
had significant (P<0.01) effect on traits studied, with the exotic strains
exhibited higher average values for live body weight, eviscerated carcass,
dressing percentage and carcass cuts percentages. On the other hand the native
chicken ecotypes showed higher relative values for back, wings, visceral organs
and feather. Chemical composition results were variable, with the highest levels
of Protein and ether extract recorded for the exotic meat strain, Hybro and the
lowest were recorded for the native chicken, Bare-neck. Moreover, significant
differences (P< 0.01) among genotypes were observed for shank weight and
shank length, with Hubbard being the highest and Large Beladi and Betwil
being the lowest for shank weight and shank length respectively. Among the
native chicken ecotypes, Bare-neck had the lowest relative feather weight
indicating the effect of Na gene in reducing feather coverage around the body. |