@article{MAKHILLJAVA20141374298,
title = {Effects of the FecB Allele on Body Weights of Naeimi and Naeimi Crossbred Lambs},
journal = {Journal of Animal and Veterinary Advances},
volume = {13},
number = {7},
pages = {449-453},
year = {2014},
issn = {1680-5593},
doi = {javaa.2014.449.453},
url = {https://makhillpublications.co/view-article.php?issn=1680-5593&doi=javaa.2014.449.453},
author = {M.A.,A.N.,A.A.,S.H. and},
keywords = {Naeimi lambs,Booroola gene,body weight,FecB allele,crossbred},
abstract = {This study aims to investigate the effect of carrying one
copy of the FecB allele on body weight of Naeimi and Naeimi crossbred lambs
at birth, weaning, 75 and 100 days of age. A total of 107 lambs representing
24 purebred Naeimi (NN) and 83 Naeimi-Booroola carrier crossbred (NB) were examined.
The results showed that 43 lambs out of the 83 NB lambs were heterozygous carrier
of the FecB allele whereas the other NB lambs were homozygous non-carrier of
the wild allele. The frequency of the B+ genotype was 0.52 among
all born NB lambs. The results also revealed that mean body weights of NN lambs
were heavier (p<0.05) than that of NB lambs at all studied ages. Body weights
of NB++ were heavier (p<0.05) than NBB+ lambs at birth,
weaning and 75 days of age, the differences in weight between NB++
and NBB+ at 100 days of age was not significant (p>0.05). The
influence of type of birth on live body weight at birth and weaning age was
significant (p<0.05) but these differences between single and twin born lambs
and between twin and triplet born lambs disappeared (p>0.05) at 75 and 100
days of age. No differences (p>0.05) were noted in birth and weaning weights
of male and female lambs, however, the male lambs being 7.2% heavier (p<0.05)
than the female lambs at 75 and 100 days of age.}
}