Articles | Volume 59, issue 1
https://doi.org/10.5194/aab-59-9-2016
https://doi.org/10.5194/aab-59-9-2016
Original study
 | 
15 Jan 2016
Original study |  | 15 Jan 2016

Sex influence on genetic expressions of early growth in Afshari lambs

F. Ghafouri-Kesbi and D. R. Notter

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Subject: Quantitative genetics and estimation of breeding value | Animal: Sheep
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Cited articles

Al-Bial, A., Singh, J., Singh, D. P., and Niwas, R.: Environmental and genetic factors on growth traits of Black Bangal sheep in Yemen, The Bioscan., 7, 185–188, 2012.
Albuquerque, L. G. and Meyer, K.: Estimates of covariance functions for growth from birth to 630 days of age in Nelore cattle, J. Anim. Sci., 79, 2776–2789, 2001.
Badyaev, A. V.: Male and female growth in sexually dimorphic species: harmony, conflict, or both?, Comments. Theor. Biol., 7, 11–33, 2002.
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Cunningham, F., Leveno, K., Bloom, S., Hauth, J., Rouse, D., and Spong, C.: Williams Obstetrics, 23rd Edition, Mc Graw-Hill, New York, USA, 2010.
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Short summary
Sexual dimorphism for growth-related traits in Afshari lambs was studied. Greater estimates of residual and maternal variances in male lambs together with interactions between sex of lamb with effects of birth year and birth type suggested greater environmental sensitivity of male lambs compared to female lambs. However, cross-sex genetic correlations were positively high, suggesting no need or opportunity for sex-specific selection to create or modify sexual-size dimorphism in sheep.