Probability of Obtaning Negative Estimates of Heritability from Full-Sib Analysis under a General Model of Gene Action |
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| Authors: | V T Prabhakaran Dr J P Jain |
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| Institution: | Indian Agricultural Statistics Research Institute, New Delhi |
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| Abstract: | Formulae are derived for the probability of obtaining negative estimates of heritability (h2) in full-sib analysis under the additive-dominance-epistasis model of gene action. Evaluation of the probabilities was undertaken for several combinations of sire/dam number, h2 and proportions of dominance and additive X additive epistatic variances, assuming two full-sibs per mating and that the dominance related epistasis is absent. In the light of the results, minimum sample sizes for obtaining admissible estimates from sire, dam components and their combination have been prescribed. |
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| Keywords: | Heritability Full-sib analysis Additive-dominance-epistasis model Negative estimates |
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