Red Sindhi cattle in Brazil: population structure and distribution.
J C C Panetto1, M V G B Silva2, R M H Leite3
1Embrapa Gado de Leite, Juiz de Fora, MG, Brasil joao.panetto@embrapa.br.
Genetics and Molecular Research : GMR
|March 17, 2017
Summary
Genetic diversity in Brazilian Red Sindhi cattle is structured into six subpopulations. An isolated herd shows unique genetic makeup, highlighting the need for strategic breeding programs to preserve this important cattle breed.
Area of Science:
- Animal Genetics
- Livestock Breeding
- Population Genetics
Background:
- Red Sindhi cattle were introduced to Brazil in limited numbers.
- Herds are now found across Brazil's Northeast, Southeast, and Midwest regions.
Purpose of the Study:
- To analyze the population structure and ancestry proportions of Red Sindhi cattle in Brazil.
- To understand the genetic diversity within the breed across different regions.
Main Methods:
- DNA samples from 15 herds in the Northeast and Southeast were analyzed.
- Single nucleotide polymorphism (SNP) marker panels were used for genotyping.
- Unsupervised hierarchical clustering identified six distinct subpopulations.
Main Results:
- Six subpopulations were identified within the Red Sindhi cattle population in Brazil.
- Three subpopulations were widespread, while three were herd-specific.
- An isolated herd, maintained for over 30 years, contained two nearly exclusive subpopulations.
Conclusions:
- The Red Sindhi cattle population in Brazil exhibits significant subpopulation structure.
- Genetic diversity can be maintained by identifying superior sires from each subpopulation for breeding programs.
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