Project Title : Genetic characterization of Red Chittagong cattle using Y-chromosomal haplotype and loci associated with coat color and beef characteristics.
Publicationed By : Dr. Ripon Chandra Paul
Project Publication Date : 2022-04-27 00:00:00
Project Online Link :
Project Description :
Cattle are one of the most economically important domestic animals in Bangladesh. Most of the indigenous cattle in Bangladesh are of Bos indicus type including Red Chittagong (RC) cattle. The RC cattle are one of the promising indigenous varieties of cattle genetic resources and are considered as national heritage. Their breeding tract is only in greater Chittagong district, the southeast part of Bangladesh. The observed coat color of the RC cattle is red and have some other distinguishable and readily recognizable characters (horn, hoof, ears, eyeball, eyebrow, vulva, tail switch are also close to red), which make them unique to the other cattle breeds. Their productive and reproductive performances are relatively better as compared to other available indigenous cattle of Bangladesh (Habib et al. 2003; Hossain et al.2005). Attractive coat color with delicious milk and meat compared to other Indigenous made peoples first preference to have RCC in their family (Hamid et al. 2017). Considering their potentialities, several governmental institutions have been taken initiatives for in situ conservation and improvement of this valuable genetic resource since last decade. Bhuiyan MSA et al. 2007 studied on mtDNA to find maternal origin of these cattle and showed that RC cattle maintain high genetic variability within the population. It was also speculated that introgression has occurred several times in RC cattle with Bos indicus and Bos taurus cattle in the recent millennia because there was no existence of taurine cattle population in Bangladesh before 20th century. Since dilution of these breed with exotic ones creates threat for their existence. So, appropriate conservation program is ultimately needed in near future. However, additional genetic studies are required to clarify the origin and biodiversity of RC cattle. As a result Y chromosome haplotype will be studied in these cattle to understand the paternal origin. Hence, our intension is to study Y chromosome haplotype of these populations.
Due to the recent progress of the marker‐assisted selection of domestic animals, various polymorphisms of the genes involved in economically important traits of cattle including meat and milk productivities and qualities, as well as reproductive performance have been reported in cattle (Hoashi et al. 2007; Rosenkrans, Banks, Reiter, & Looper. 2010; Yamada et al. 2008). In this study, therefore, we genotyped the polymorphisms of stearoyl‐CoA desaturase (SCD) and sterol regulatory element‐binding protein‐1 (SREBP1) that are associated with fatty acid composition in fat in beef (Hoashi et al. 2007; Taniguchi et al. 2004), MC1R that are associated with coat color of these cattle.