Conservation Aspects of Meat Producing Ability and Heterosis in Crosses of Two Natively Different Local Hungarian Chicken Breeds
DOI:
https://doi.org/10.3923/ijps.2016.442.447Keywords:
Conservation, crossing, heterosis, local chicken, reciprocal effectAbstract
Background and Objective: High quality meat producing ability of old chicken breeds must be considered as an important conservation aspect. Consequently, this study aims to investigate body weight, feed conversion ratio, slaughtering yields as well as to identify the existence of heterosis for those traits of the crossings between two natively different local Hungarian chicken breeds, Partridge Coloured Hungarian and White Transylvanian Naked Neck. A high survival rate without significant difference amongst genotypes was recorded at the end of the experiment. Methodology: The breeds, kept as in vivo gene bank stocks of the Research Center for Farm Animal Gene Conservation were chosen on the basis of their definite difference in genotype and meat producing ability making studies of heterosis (H%) and reciprocal effect (RE) possible in crossings for quantitative traits at different ages, by using separate gender groups of purebreds and their reciprocal crossings. Results: A high survival rate without significant difference amongst genotypes was recorded at the end of the experiment. As expected, male chickens have significantly higher body weight and lower feed conversion ratio in comparison with females. Crossbred’s body weight and feed conversion ratio are significantly better than those of White Transylvania Naked Neck but rather comparable to Partridge Colored Hungarian pure breds. The highest eviscerated carcass in percentage of live weight, breast and thigh meat weight was detected in the crossbreeds. Positive heterosis of body weight was found in female crossbreeds, while positive heterosis of slaughtering yields and negative heterosis of feed conversion ratio were observed in both males and females. Conclusion: It is reasonable to state that using two Hungarian chicken breeds marked in the same category “Indigenous and rare” possess certain potential for genetic improvement by crossing without making a compromise in product quality of the offspring. Crossing therefore can be considered as an additional tool for conservation of highly endangered and low producing breeds.
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