The relationship between the genetic polymorphism of the IGF-1 gene and some production traits in Ross 308 broiler chickens has been studied
DOI:
https://doi.org/10.54174/s42p3215Keywords:
IGF_1 ، Ross 308 ، SNPAbstract
To determine the genetic variations of the Insulin-like Growth Factor-1 IGF-1 gene and study its relationship with certain production traits, including weekly weight, weekly weight gain rate, bird length, back width, carcass length, Chest fullness, relative weights of consumed organs, and abdominal fat percentage, in Ross 308 broiler chickens, a total of 150 chicks were bred from day-old to 35 days under good rearing conditions based on the rearing guide and followed a free feeding system. At the end of the rearing period, blood samples were collected from the birds through the wing vein to extract the genetic material, DNA. Three genetic structures were identified using sequencing technology: GG, GT, and TT, with frequencies of 0.34, 0.58, and 0.08, respectively. The allele frequencies for G and T were 0.63 and 0.37, respectively. The results showed a significant superiority (P≤0.05) in weight and weight gain for the TT genetic structure in the third, fourth, and fifth weeks compared to the other genetic structures GT and GG. Similarly, the TT structure showed superiority in bird length measurement in the third and fourth weeks, as well as in carcass length measurement. The GG genetic structure exhibited superiority in back width measurement in the second week of rearing compared to the other genetic structures. However, no significant differences were observed among the genetic structures in the relative weights of consumed organs (liver, heart, and gizzard), abdominal fat percentage, and Chest fullness.
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