TY  - JOUR
T1  - Effects of the FecB Allele on Body Weights of Naeimi and Naeimi Crossbred Lambs
AU - Abouheif, M.A. AU - Al-Owaimer, A.N. AU - Swelum, A.A. AU - Yaqoob, S.H. AU - Hussein, E.S. 
JO  - Journal of Animal and Veterinary Advances
VL  - 13
IS  - 7
SP  - 449
EP  - 453
PY  - 2014
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2014.449.453
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2014.449.453
KW  - Naeimi lambs
KW  -Booroola gene
KW  -body weight
KW  -FecB allele
KW  -crossbred
AB  - 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<SUP>+</SUP> genotype was 0.52 among 
  all born NB lambs. The results also revealed that mean body weights of NN lambs 
  were heavier (p&lt;0.05) than that of NB lambs at all studied ages. Body weights 
  of NB<SUP>++</SUP> were heavier (p&lt;0.05) than NB<SUP>B+</SUP> lambs at birth, 
  weaning and 75 days of age, the differences in weight between NB<SUP>++</SUP> 
  and NB<SUP>B+</SUP> at 100 days of age was not significant (p&gt;0.05). The 
  influence of type of birth on live body weight at birth and weaning age was 
  significant (p&lt;0.05) but these differences between single and twin born lambs 
  and between twin and triplet born lambs disappeared (p&gt;0.05) at 75 and 100 
  days of age. No differences (p&gt;0.05) were noted in birth and weaning weights 
  of male and female lambs, however, the male lambs being 7.2% heavier (p&lt;0.05) 
  than the female lambs at 75 and 100 days of age.
ER  -