Ay. Yied et al., GENETIC AND ENVIRONMENTAL RELATIONSHIP AMONG TESTICULAR MEASUREMENTS AND BODY-WEIGHT OF ARABI LAMBS AT DIFFERENT AGES, Indian Journal of Animal Sciences, 64(3), 1994, pp. 285-289
Body weights and testicular measurements, viz, length, width, depth an
d scrotal circumference of Arabi male lambs (150) were taken at birth
and then at monthly intervals up to 6 months of age. Analysis of covar
iance and linear regression equations among these measurements were es
timated. Heritability and repeatability of scrotal circumference and i
ts genetic correlation with body weight were conducted. Arabi male lam
bs showed longer testis and less scrotal circumference among other bre
eds of sheep. Multiple and simple correlations among body weight and a
ll testicular measurements were significantly high at different ages.
Pooled heritability and repeatability of scrotal circumference were 0.
35 and 0.55 respectively. The genetic and environmental correlations o
f scrotal circumference and body weight at different ages were medium
and high respectively.