Genomic Analysis of Taurine and Indicine Ancestry in the Montana Tropical Composite Population.

IF 1.9 3区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Camila Alves Dos Santos, El Hamidi Hay, Elisangela Chicaroni de Mattos Oliveira, Rafael Espigolan, José Bento Sterman Ferraz, Tiago do Prado Paim
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Abstract

The Montana Tropical cattle, a Taurine and Indicine composite, were developed in Brazil since 1994 and were based on crossing four biological types of cattle: zebu (mainly Nelore), tropical adapted taurine (mainly Senepol and Romosinuano), British taurine (mainly Angus) and continental taurine (as Charolais, Simental and Limousin). This study aimed to characterise the genetic ancestry of this composite breed at the genomic level. Principal component analysis revealed the composite in intermediate space between indicine and taurine but closer to the Taurine cluster, which is consistent with its multi-breed origin. The ADMIXTURE analysis indicated the Montana Tropical to be composed of several progenitor breeds without an indication of a dominant breed. Local ancestry analysis showed the Montana animals to have an average of 24% (standard deviation of ±5.41) Zebu ancestry. The total taurine ancestry was 62%, consisting of 19.6% (±6.96) from tropical adapted taurine, 20.1% (±5.99) from British taurine, 21.92% (±7.79) from continental taurine and 14% (±5.26) of the genome was undetermined. Based on the pedigree, these animals would have 20.8% ± 8.5% Zebu, 50.5% ± 14.4% tropical adapted taurine, 21.1% ± 13.5% British taurine and 7.6% ± 5.1% of continental European taurine in their composition. The genomic regions in the composite originating from each biological type highlight the trait complementarity each genetic group contributes. For example, the genomic region of high tropical adapted taurine ancestry was shown to harbour the slick hair locus, and the regions of high indicine ancestry are associated with high length of productive life. This study unravels the complex genetic ancestry of the Montana Tropical composite, highlighting the effective blend of ancestral gene pools that enhance key production and adaptation traits.

蒙大拿州热带复合种群中牛磺酸和Indicine祖先的基因组分析。
蒙大拿热带牛是牛磺酸和Indicine的混合物,自1994年以来在巴西开发,基于杂交四种生物类型的牛:zebu(主要是Nelore),热带适应牛磺酸(主要是Senepol和Romosinuano),英国牛磺酸(主要是Angus)和大陆牛磺酸(如Charolais, Simental和Limousin)。本研究的目的是在基因组水平上表征这种复合品种的遗传祖先。主成分分析表明,该复合物位于牛磺酸和茚的中间空间,但更接近牛磺酸簇,这与它的多品种起源一致。admix分析表明,蒙大拿热带品种由几个祖先品种组成,没有一个优势品种的迹象。当地祖先分析表明,蒙大拿州动物平均有24%(标准差为±5.41)的泽布祖先。总牛磺酸血统为62%,其中19.6%(±6.96)来自热带适应牛磺酸,20.1%(±5.99)来自英国牛磺酸,21.92%(±7.79)来自大陆牛磺酸,14%(±5.26)基因组未确定。根据家谱,这些动物的组成中含有20.8%±8.5%的Zebu, 50.5%±14.4%的热带适应牛磺酸,21.1%±13.5%的英国牛磺酸和7.6%±5.1%的欧洲大陆牛磺酸。合成物中源自每种生物类型的基因组区域突出了每种遗传组所贡献的性状互补性。例如,高热带适应牛磺酸祖先的基因组区域被证明具有光滑的毛发位点,高热带适应牛磺酸祖先的区域与较长的生产寿命相关。这项研究揭示了蒙大拿州热带复合植物的复杂遗传祖先,突出了祖先基因库的有效混合,增强了关键的生产和适应性状。
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来源期刊
Journal of Animal Breeding and Genetics
Journal of Animal Breeding and Genetics 农林科学-奶制品与动物科学
CiteScore
5.20
自引率
3.80%
发文量
58
审稿时长
12-24 weeks
期刊介绍: The Journal of Animal Breeding and Genetics publishes original articles by international scientists on genomic selection, and any other topic related to breeding programmes, selection, quantitative genetic, genomics, diversity and evolution of domestic animals. Researchers, teachers, and the animal breeding industry will find the reports of interest. Book reviews appear in many issues.
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