Articles | Volume 69, issue 1
https://doi.org/10.5194/aab-69-89-2026
https://doi.org/10.5194/aab-69-89-2026
Original study
 | 
06 Feb 2026
Original study |  | 06 Feb 2026

Genetic variation in the growth hormone (GH) gene influences postnatal growth and placental structure in indigenous Tuj sheep

Ulku Dagdelen

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Cited articles

Abdelmoneim, T. S., Brooks, P. H., Afifi, M., and Swelum, A. A.: Sequencing of growth hormone gene for detection of polymorphisms and their relationship with body weight in Harri sheep, Indian J. Anim. Res., 51, 205–211, https://doi.org/10.18805/ijar.11457, 2017. 
Al-Anbari, N. N., Al-Jumaily, A. H., and Jubair, I. J.: Genotypes relationship of growth hormone gene polymorphism and growth traits in sheep, J. Biol. Agric. Healthc., 7, 112–120, https://doi.org/10.24126/jobrc.2017.11.2.516, 2017. 
Bell, A. W., Greenwood, P. L., and Greenwood, E.: Regulation of placental growth and efficiency in ruminants, Reprod. Fertil. Dev., 34, 683–699, https://doi.org/10.1079/NRR200239, 2022. 
Chavatte-Palmer, P. and Tarrade, A.: Placentation in different mammalian species, Ann. Endocrinol., 77, 67–74, https://doi.org/10.1016/j.ando.2016.04.006, 2016. 
Dagdelen, U. and Esenbuga, N.: Association of GH/HaeIII polymorphism with growth and developmental traits of Morkaraman sheep, Arch. Anim. Breed., 68, 575–587, https://doi.org/10.5194/aab-68-575-2025, 2025. 
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Short summary
This study examined the relationship between genetic differences in the growth hormone gene and growth and placental characteristics in Tuj sheep. Those with a particular gene polymorphism revealed superior growth post-birth and a more efficient placental structure. These results imply that genetic testing could be used to identify animals with greater growth potential at an early stage, thus facilitating more effective and sustainable breeding decisions.
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