Effect of non-genetic factors on growth performance in Sohagi sheep | ||||
Journal of Sohag Agriscience (JSAS) | ||||
Volume 8, Issue 2 - Serial Number 14, December 2023, Page 296-300 PDF (772 K) | ||||
Document Type: Research and Review Papers | ||||
DOI: 10.21608/jsasj.2023.334543 | ||||
View on SCiNiTO | ||||
Authors | ||||
Ahmed Elnahas1; Manal ElSayed2; Abdellah Y. Khaled 1; Gamal Solouma1 | ||||
1Animal Production Department Faculty of Agriculture Sohag University Sohag 82524 Egypt | ||||
2Animal Production Department Faculty of Agriculture Ain Shams University Cairo Egypt | ||||
Abstract | ||||
The present study aimed to assess the impact of season, sex, year, parity, and birth type on the growth performance of Sohagi sheep. Data were collected from 1391 lambs born between 2001 and 2021 at the experimental sheep farm of the Animal Production Department, Faculty of Agriculture, Sohag University, Sohag, Egypt. The influence of non-genetic factors on lambs' average daily gain from birth until one year of age was calculated. Results show that average daily gain until 3 months (ADG1) and average daily gain until 12 months (ADG3) were significantly affected by sex (P<0.01), while average daily gain until 6 months (ADG2) wasn’t affected significantly. Also, ADG1 and ADG3 were greater in males than females, while ADG2 in males was close to that for females. The ADG1 and ADG2 were significantly affected by birth type (P<0.01), single and twin lambs were grown faster than triplets. The ADG2 of lambs born to ewes of 3rd, 2nd and 4th parities was higher than those of 1st and ≥ 5th parities, but it wasn’t significantly affected in each ADG1 and ADG3. Thus, it can be concluded that nongenetic factors affected the average daily gain of Sohagi lambs during the first six months after lambing and up to one year of age. Therefore, it must be taken into consideration when designing selection programs to improve the performance of Sohagi sheep. | ||||
Keywords | ||||
Non-genetic; growth performance; Sohagi sheep | ||||
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