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Prof. Maher Hasab El-Nabi Khalil :: Publications:

Genetic evaluation for growth of calves at early stage in Saudi camels - 2007
Authors: Al-Sobayil K.A., Khalil M.H., Al-Saef A.M., Mohamed K.M., Salal S.A.
Year: 2007
Keywords: Animal model, genetic evaluation, growth, heritabilities, maternal common environment, Saudi camels
Journal: Journal of Camel Practice and Research
Volume: 14
Issue: 2
Pages: 175-180
Publisher: Camel Publishing House, Bikaner, India
Local/International: International
Paper Link:
Full paper Maher Hasab El-Nabi Khalil_2007 - Genetic Evaluation for Growth of Calves at Early Stage in Saudi Camels (2).pdf
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A 383 progeny records for Saudi camels were genetically analysed and evaluated for growth performance of body weights at birth and bimonthly, thereafter up to 12 months of age along with gains in weight at 2-month intervals. Data were analysed using DFREML procedure to estimate heritabilites, maternal common environment and random error. Breeding values for growth traits if calves in Lh is population were predicted using an animal niodel. Phenotypic variations for most growth traits in Saudi camels were moderate or slightly high; ranging from 7,0 to 35,2%. Heritabilities were moderate or slightly high and ranging from 014 to 0.40. Ratios of maternal common environment were mostly moderate and ranging from OW) to 0.30. The ranges inbreeding values for growth traits of animals were 25.3, 39.6, 61.0, 70.1, 83.7, 104,3, 109.6, 111.0, 102.1, 96.7, 81.0, 115.1, and 96.7 kg for body weight at 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 and 12 months of age, respectively. While, the ranges in estimates of breeding values for daily gain in weights were 0170, 0348, 0.371, 0_471, 0.491, 0.542, and 0.638 kg at intervals of 0-2, 2-4, 4-6, 6-8, 8-10, 10-12, and 0-12 months of age, respectively. Accuracies of breeding values recorded for growth traits were moderate; ranging from 0-46 to 0.75. For the list of all camels, the additive selection responses per generation (SR,„) predicted were moderate or high and nearly similar at different stages of growth; ranging from 5.7 to 12.2 % relative to the actual mean of the trait.

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