GENETIC AND NON GENETIC  PARAMETERS OF WEIGHTS ,  AND BODY DIMENSIONS AT BIRTH AND WEANING OF  HAMADANI SHEEP

Omar  Raaof, Salm

doi:10.33899/magrj.2007.26475

	GENETIC AND NON GENETIC PARAMETERS OF WEIGHTS , AND BODY DIMENSIONS AT BIRTH AND WEANING OF HAMADANI SHEEP
Mesopotamia Journal of Agriculture
Article 9, Volume 35, Issue 2, 2007, Pages 53-62 PDF (0 K)
DOI: 10.33899/magrj.2007.26475
Author
Salm Omar Raaof
Abstract
Five hundred and seventy one records of birth weight and 540 records of weaning weight of Hamadani sheep were collected to study body weights and dimensions at birth and weaning weights The overall mean of body weight. and dimensions at birth were 4.62 kg , and 28.83, 37.82, 38.84 , 40.64 , 8.81 and 10.54 cm for the body length , heart girth , height at shoulders , height at hip , width at shoulders and at hip, respectively. The overall mean of body weight and dimensions at weaning were 23.23 kg , and 49.63 , 61.10 , 54.54 , 56.47, 14.47 and 16.59 cm for body length , heart girth , height at shoulders , height at hip , width at shoulders and at hip, respectively .The effects of flock – year , and sex of lamb on birth , and weaning weights and body dimensions were significant (p< 0.01) .The effects of type of birth on birth and weaning weights and most of body dimensions were significant (p< 0.01) .Whereas the effect of age of dam at birth was significant (p< 0.01) on most studied traits. eritability estimates for birth and weaning weights were 0.14 and 0.18, respectively .Heritability estimates for body dimensions ranged between 0.02–0.23.Genetic correlations between body weights and body dimensions at birth and weaning were positive and heigh (0.22 – 0.99) .While the phenotypic correlations were (0.08 -0.63 ) /

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