Luong Nguyen Ngoc, Ha Huynh Thi Thu, Huy Nguyen Xuan, Loi Bui Van, Van Nguyen Huu, Quang Hoang Tan, Loc Nguyen Hoang
College of Sciences, Hue University, 77 Nguyen Hue, Hue 530000, Vietnam.
Department of Science, Technology and International Relations, Hue University, 4 Le Loi, Hue 530000, Vietnam.
Animals (Basel). 2024 Jul 9;14(14):2020. doi: 10.3390/ani14142020.
The Phan Rang sheep, considered the sole indigenous breed of Vietnam, are primarily concentrated in the two central provinces of Ninh Thuan and Binh Thuan, with Ninh Thuan accounting for more than 90% of the country's sheep population. These provinces are known for their high temperatures and frequent droughts. The long-standing presence of the Phan Rang sheep in these regions suggests their potential resilience to heat stress-a trait of increasing interest in the face of global climate change. Despite the breed's significance, a critical knowledge gap hinders conservation and breeding programs. To address this, our study employed a two-pronged approach. First, we collected body conformational data to aid in breed identification. Second, we analyzed mitochondrial DNA (D-loop) and Y chromosome markers (SRY and SRYM18) to elucidate the maternal and paternal lineages. Among the 68 Phan Rang sheep analyzed for their D-loop, 19 belonged to mitochondrial haplogroup A, while 49 belonged to haplogroup B. The haplogroups can be subdivided into 16 unique haplotypes. All 19 rams surveyed for their paternal lineages belonged to haplotypes H5 and H6. These findings strongly support the hypothesis of dual origins for the Phan Rang sheep. This study presents the first genetic data for the Phan Rang breed, providing crucial insights for future research and conservation efforts.
藩朗羊被认为是越南唯一的本土品种，主要集中在宁顺和平顺这两个中部省份，其中宁顺的羊只数量占全国羊只总数的90%以上。这些省份以高温和频繁干旱而闻名。藩朗羊在这些地区长期存在，表明它们可能具有耐热应激的能力——在全球气候变化的背景下，这一特性越来越受到关注。尽管该品种具有重要意义，但一个关键的知识空白阻碍了保护和育种计划。为了解决这个问题，我们的研究采用了双管齐下的方法。首先，我们收集身体形态数据以帮助品种识别。其次，我们分析线粒体DNA（D环）和Y染色体标记（SRY和SRYM18）以阐明母系和父系谱系。在对68只藩朗羊的D环进行分析时，19只属于线粒体单倍群A，而49只属于单倍群B。这些单倍群可细分为16种独特的单倍型。所有接受父系谱系调查的19只公羊都属于单倍型H5和H6。这些发现有力地支持了藩朗羊双重起源的假设。本研究提供了藩朗品种的首个遗传数据，为未来的研究和保护工作提供了关键见解。
