Myostatin mutation (g+6723G  >  A) introgression: comparative analysis of growth, slaughter, and carcass traits in Texel, Pırlak, and their crosses (F 1 and BC 1)

Koçak, Serdar; Tekerli, Mustafa; Erdoğan, Metin; Çelikeloğlu, Koray; Yazıcı, Ebubekir; Bozkurt, Zehra; Hacan, Özlem; Demirtaş, Mustafa; Çinkaya, Samet

This study was carried out to examine the effect of myostatin mutation on growth, body measurements, Musculus longissimus dorsi (MLD) values, and carcass characteristics in crossbred generations as well as introgression from Texel to Pırlak. This research was conducted on 105 Finline-formula1, 94 myostatin-carrying BCinline-formula1, 53 non-carrying BCinline-formula1 lambs, and pure Pırlak and Texel lambs born during the same period. It was determined that the effects of factors such as genotype, sex, birth type, birth month, and dam age were significant (inline-formulaP< 0.05) for the growth characteristics of lambs. The birth weights, daily live weight gains and weaning weights in Finline-formula1, myostatin-carrying BCinline-formula1, and non-carrying BCinline-formula1 lambs were 4.10, 4.45, and 4.39, 0.21252, 0.22176, and 0.20964, as well as 35.51, 33.18, and 33.47 kg, respectively. It was detected that Texel and myostatin-carrying BCinline-formula1 lambs were significantly (inline-formulaP< 0.05) higher than Pırlak and non-carrying BCinline-formula1 lambs for the MLD area at weaning. Additionally, the rump width, chest circumference, and MLD depth of lambs carrying myostatin mutation were significantly greater than Pırlak lambs. Six-month live weight means of Pırlak, Texel, and myostatin-carrying BCinline-formula1 lambs were found as 39.45, 37.22, and 39.06 kg, respectively. Myostatin-carrying BCinline-formula1 lambs had a superiority to Pırlak lambs in terms of muscle conformation and fatness of the hind leg.

As a result, myostatin-carrying BCinline-formula1 lambs were significantly found to have a better MLD area than non-carrying BCinline-formula1 lambs, indicating a myostatin mutation (ginline-formula+6723G inline-formula> A) effect. It was concluded that the growth and carcass characteristics of Pırlak lambs may be improved by introgression of myostatin mutation.

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Koçak, Serdar / Tekerli, Mustafa / Erdoğan, Metin / et al: Myostatin mutation (g+6723G  >  A) introgression: comparative analysis of growth, slaughter, and carcass traits in Texel, Pırlak, and their crosses (F1 and BC1). 2024. Copernicus Publications.

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Rechteinhaber: Serdar Koçak et al.

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