Genetic characterization and population structure of six brown layer pure lines using microsatellite markers

Abstract

The results obtained from the study indicate a medium level of genetic diversity, high level inbreeding in chicken lines and high level genetic differentiation between chicken lines.

Assessment of genetic diversity and differentiation among four indigenous Turkish sheep breeds using microsatellites

“…All pairwise F ST values were significant (p < 0.01), implying that the four sheep populations could be considered genetically different. It has been highlighted in previous studies that the four sheep populations are varieties or types of the Akkaraman breed (Karaca et al, 2003;Karsli et al, 2011). However, presence of high genetic differentiation among the four sheep populations is not surprising considering that they are raised in different parts of Turkey under different climatic conditions along side their breeding practices (for instance, KNG sheep have been derived from Akkaraman via selection).…”

“…Mainly distributed in Middle Anatolia and nearby places, Akkaraman is the most raised breed with an approximately 40 % proportion among Turkish native sheep breeds (Karaca et al, 2003;Ertugrul et al, 2009). There are different varieties of the Akkaraman breed such as Güney Karaman (GKR), Norduz (NRD), Karakas (KRK), and Kangal (KNG) adapted to different regions (Karaca et al, 2003;Karsli et al, 2011). GKR, also known as black sheep, is reared in the Mediterranean region (especially in Antalya, Mersin, and Hatay provinces) in a nomadic breeding system (Karsli et al, 2011).…”

“…There are different varieties of the Akkaraman breed such as Güney Karaman (GKR), Norduz (NRD), Karakas (KRK), and Kangal (KNG) adapted to different regions (Karaca et al, 2003;Karsli et al, 2011). GKR, also known as black sheep, is reared in the Mediterranean region (especially in Antalya, Mersin, and Hatay provinces) in a nomadic breeding system (Karsli et al, 2011). The NRD variety is raised in Van Province, whereas KRK sheep are raised in Eastern Anatolia including Di-B.…”

“…Karsli et al: Genetic diversity and differentiation among Turkish sheep breeds yarbakır, Van, Bitlis, and Hakkâri provinces (Bingol and Aygun, 2014). KNG, raised extensively in Sivas and Malatya provinces, has the largest body size among variety of the Akkaraman breed (Kurar et al, 2012;Karsli et al, 2011). Since KNG sheep have been derived from the Akkaraman breed by selection in the recent past, they show similar phenotypic traits as Akkaraman sheep.…”

“…SSR markers are commonly used to reveal genetic diversity because they are abundant, distributed through genome randomly, easy to access and apply, highly polymorphic, and show codominant inheritance. SSR markers were used to detect genetic diversity or parentage test in different livestock including cattle (Demir and Balcioglu, 2019), sheep (Ocampo et al, 2016), goat (Jawasreh et al, 2018, pigs (Szmatoła et al, 2016), horses (Semik and Zabek, 2013) chickens (Karsli and Balcioglu, 2019), rabbit (Abdel-Kayf et. al., 2016), ducks (Hariyono et al, 2019, and donkeys (Han et al, 2017).…”