Population structure and genetic diversity in Colombian Simmental cattle

Amaya, Alejandro; Martínez, Rodrigo; Muñoz, Mario

doi:10.1007/s11250-019-02111-w

Cited by 4 publications

(9 citation statements)

References 26 publications

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“…Programs to gather ruminant genetic resources and promote selective breeding are already in place worldwide, from single-country programs in Australia and Latin America to multinational programs in Africa and Europe [23][24][25][26][27][28] . Nevertheless, ruminant breeding is a slow and expensive process that can take decades before establishing a particular genotype [29][30][31][32] . Moreover, breeding must consider region-speci c factors, as breeding developments suitable for one region will likely not be implementable worldwide 22,33 .…”

Section: Breeding Genetically Advantageous Ruminantsmentioning

confidence: 99%

“…For instance, in the Australian Northern Territory, replacing foreign English Shorthorn cattle with a locally adapted breed improved animal productivity, mitigating 43 percent of methane emission per tonne liveweight 30,34 . Similar capital-intensive breeding projects funded by national initiatives are in place in other regions such as Europe and South America 29,[35][36][37] .…”

Section: Breeding Genetically Advantageous Ruminantsmentioning

confidence: 99%

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Practical strategies to mitigate ruminant greenhouse gas emissions

Ortega

Tester

Lauersen

2021

Preprint

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Livestock contributes to 14.5 percent of global greenhouse gas emissions, with ruminants being the largest contributor through enteric methane emissions. Although several strategies are available to mitigate livestock methane, no consensus exists on which methods are the most effective. Here, we projected by 2050 the impact of the most pragmatic strategies to reduce enteric methane, modelling cattle emissions. The projection shows that supplementing ruminant feed with anti-methanogenic seaweed and converting grassland into silvopasture offer the greatest potential to reduce emissions. A synergic combination of strategies can aid Europe and most of Asia to can reach ruminant carbon neutrality by 2035 and 2038, respectively. However, global cattle CO2-eq emissions will be reduced by no more than 34 percent by 2050, remaining far above the carbon neutrality target. Mitigation strategies alone are insufficient to lower emissions, and reducing the demand for ruminant products is also necessary – particularly in Africa and Western Asia.

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Section: Breeding Genetically Advantageous Ruminantsmentioning

confidence: 99%

Section: Breeding Genetically Advantageous Ruminantsmentioning

confidence: 99%

Practical strategies to mitigate ruminant greenhouse gas emissions

Ortega

Tester

Lauersen

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Programs to gather ruminant genetic resources and promote selective breeding are already in place worldwide, from single-country programs in Australia and Latin America to multinational programs in Africa and Europe [23][24][25][26][27][28] . Nevertheless, ruminant breeding is a slow and expensive process that can take decades before establishing a particular genotype [29][30][31][32] . Moreover, breeding must consider region-specific factors, as breeding developments suitable for one region will likely not be implementable worldwide 22,33 .…”

Section: Breeding Genetically Advantageous Ruminantsmentioning

confidence: 99%

Section: Breeding Genetically Advantageous Ruminantsmentioning

confidence: 99%

Practical strategies to mitigate ruminant greenhouse gas emissions

Ortega

Tester

Lauersen

2021

Preprint

View full text Add to dashboard Cite

Livestock contributes to 14.5 percent of global greenhouse gas emissions, with ruminants being the largest contributor through enteric methane emissions. Although several mitigation strategies are available to reduce livestock methane, no consensus exists on which methods are the most effective. Here, the mitigation impact of the most pragmatic strategies to reduce enteric methane has been projected to 2050, using cattle emissions as a model. The projection shows that supplementing ruminant feed with anti-methanogenic seaweed and converting grassland into silvopasture offer the greatest potential to reduce emissions. With a synergic combination of strategies, the livestock sector in Europe and most of Asia can reach carbon neutrality by 2035 and 2038, respectively. However, global cattle CO2-eq emissions will be reduced by no more than 34 percent by 2050, remaining far above the carbon neutrality target. Mitigation strategies alone are insufficient to lower emissions, and reducing the demand for ruminant products is also necessary – particularly in Africa and Western Asia.

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“…The Simmental is a cattle (Bos taurus) breed that was selected in North America and Europe, mainly for increasing meat production efficiency (Amaya et al, 2020). The introduction of Simmental to Colombia 5 decades ago aimed to increase both milk and beef production by artificial insemination-based genetic improvement schemes using semen from proven bulls in North America and Europe (Amaya et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Comparing Class II MHC DRB3 Diversity in Colombian Simmental and Simbrah Cattle Across Worldwide Bovine Populations

et al. 2022

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The major histocompatibility complex (MHC) exerts great influence on responses to infectious diseases and vaccination due to its fundamental role in the adaptive immune system. Knowledge about MHC polymorphism distribution among breeds can provide insights into cattle evolution and diversification as well as population-based immune response variability, thus guiding further studies. Colombian Simmental and Simbrah cattle’s BoLA-DRB3 genetic diversity was compared to that of taurine and zebuine breeds worldwide to estimate functional diversity. High allele richness was observed for Simmental and Simbrah cattle; nevertheless, high homozygosity was associated with individual low sequence variability in both the β1 domain and the peptide binding region (PBR), thereby implying reduced MHC-presented peptide repertoire size. There were strong signals of positive selection acting on BoLA-DRB3 in all populations, some of which were poorly structured and displayed common alleles accounting for their high genetic similarity. PBR sequence correlation analysis suggested that, except for a few populations exhibiting some divergence at PBR, global diversity regarding potential MHC-presented peptide repertoire could be similar for the cattle populations analyzed here, which points to the retention of functional diversity in spite of the selective pressures imposed by breeding.

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Population structure and genetic diversity in Colombian Simmental cattle

Cited by 4 publications

References 26 publications

Practical strategies to mitigate ruminant greenhouse gas emissions

Practical strategies to mitigate ruminant greenhouse gas emissions

Practical strategies to mitigate ruminant greenhouse gas emissions

Comparing Class II MHC DRB3 Diversity in Colombian Simmental and Simbrah Cattle Across Worldwide Bovine Populations

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