TY  - JOUR
T1  - Effects of <I>in ovo</I> Feeding of L-Glutamine on Hatchability Performance and Hatching Time of Meat-Type Breeder Eggs
AU - Shafey, T.M. AU - Sami, A.S. AU - Abouheif, M.A. 
JO  - Journal of Animal and Veterinary Advances
VL  - 12
IS  - 1
SP  - 135
EP  - 139
PY  - 2013
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2013.135.139
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2013.135.139
KW  - In ovo feeding
KW  -L-glutamine
KW  -broiler breeders
KW  -hatchability performance
KW  -eggs
AB  - The effects of <I>in ovo</I> feeding of L-Glutamine (GLN) 
  at 17th day of incubation on hatchability traits, hatching time and chick weight 
  at hatch (CWT and CWT%, expressed as an absolute value and as a percentage of 
  egg weight, respectively) of Ross meat-type breeder eggs were studied at 26 
  and 32 weeks of age in trials 1 and 2, respectively. The treatments were a non-injected 
  control, a positive control where saline was injected or saline with GLN at 
  5, 7.5 and 10 mg/egg. <I>In ovo</I> feeding of GLN did not influence hatchability 
  traits, CWT, CWT% and hatching time. <I>In ovo</I> feeding of 10 mg GLN/egg 
  increased percentage of hatched chicks at 468 h of incubation and reduced percentage 
  of hatched chicks at 492 h of incubation when compared with those of the control 
  treatments. Age of birds did not influence hatchability traits and percentages 
  of hatched chicks at 468 and 492 h of incubation and CWT%. Eggs produced at 
  26 weeks of age had lower weight, percentage of hatched chicks at 504 h of incubation, 
  hatching time and CWT when compared with those produced at older age. It is 
  concluded that <I>in ovo</I> of up to 10 mg GLN/egg at 17th day of incubation 
  of layer-type breeder eggs did not influence hatchability traits, chick weight 
  at hatch and hatching time and eggs produced at older age had higher egg weight, 
  chick weight at hatch and hatched later than those produced at younger age.
ER  -