Kappa-casein genotyping in tropical milking Criollo and its association to milk production and composition

Becerril-Pérez, Carlos Miguel; Álvarez-Cepeda, Amado A.; Rosendo-Ponce, Adalberto; Alonso-Morales, Rogelio Alejandro; Gayosso-Vázquez, Amanda; Torres-Hernández, Glafíro; Rosales-Martínez, Froylan

doi:10.1007/s11250-020-02317-3

Cited by 2 publications

(1 citation statement)

References 15 publications

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“…Its functions include transporting calcium and phosphate to milk to provide enough calcium and phosphorus for bone formation in young lambs and to meet amino acid requirements. Casein includes α S1-casein (CSN1S1), α S2-casein (CSN1S2), β-casein (CSN2), and k-casein (CSN3) [37,52,53]. Sheep casein contains 45% β-casein, represented by two phosphorylated forms, β1-casein and β2-casein, which have similar amino acid compositions as bovine β-caseins and have a significant effect on milk protein [54].…”

Section: Csn2 Gene-benefit For the Lactose Intolerancementioning

confidence: 99%

Review: Research Progress of Dairy Sheep Milk Genes

Jiang

2022

Agriculture

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The dairy sheep industry is an important but lacking part of the small ruminant industry. For a sheep breeding program, in addition to wool and meat use, sheep milk can also be processed into high-end dairy products such as cheese and milk powder and bring high economic interests for businesses home and abroad. With increasing interest in sheep milk, the content of which is becoming increasingly clearer, people have found that the nutritional value of sheep milk is higher than that of goat milk and cow milk, with abundant fat yield, protein percentage, and mineral contents, which provide a good opportunity for the development of the sheep milk industry. This review will introduce some dairy sheep breeds with the highest milk production worldwide and compare sheep milk nutrition contents with other ruminants’ milk. Moreover, genes influencing lactation or mammary gland growth like CSN2, SLC2A2, SCD, and SOCS2, which have been revealed in recent studies to significantly affect milk production and milk composition traits will be discussed. For the SLC2A2 gene, working as an important solute carrier to transport small molecular nutrition from blood to milk and SOCS2 gene mutation as an indicator of mastitis, in addition, other genes have been detected that correlate with milk traits, which will be introduced in the review. Some personal opinions into future sheep milk development will be given in the final part of the text. Although the research of sheep milk genetic factors has achieved some progress in recent years, there is still a long way to go.

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Section: Csn2 Gene-benefit For the Lactose Intolerancementioning

confidence: 99%

Review: Research Progress of Dairy Sheep Milk Genes

Jiang

2022

Agriculture

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Diversity and population structure of Criollo Lechero Tropical and Romosinuano cattle breeds in Mexico

Martínez-Rocha,

Parra-Bracamonte,

Ramírez-Valverde

et al. 2024

Rev. colomb. cienc. pecu.

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Background: The assessment of genetic diversity, population structure, as well as within and across breed relationships using DNA markers is essential to develop conservation and genetic improvement programs. Objective: To assess the genetic diversity and population structure of Criollo Lechero Tropical (CLT) and Romosinuano (ROMO) cattle breeds in Mexico and compare them with other Criollo and Spanish breeds. Methods: The study included CLT and ROMO genotypes from the 65k Axiom©BovMDv3 array. Genomic data of Criollo and Spanish breeds were retrieved from a repository. Genetic diversity across breeds was evaluated by pairwise Wright's FST, principal components, and structure analysis. Results: Observed and expected heterozygosity, inbreeding coefficient, and effective population size (Ne) were 0.31, 0.30, -0.018 and 56 in CLT, and 0.32, 0.31, -0.023 and 99 in ROMO, respectively. Wright's FST indicated that both breeds are related to American Criollo and some Spanish cattle. ROMO cattle showed more significant Spanish ancestry than CLT. Conclusions: This study presents novel evidence indicating that, although the Ne of these breeds is small, they are still diverse and can be used as genetic reservoirs in conservation programs.

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Kappa-casein genotyping in tropical milking Criollo and its association to milk production and composition

Cited by 2 publications

References 15 publications

Review: Research Progress of Dairy Sheep Milk Genes

Review: Research Progress of Dairy Sheep Milk Genes

Diversity and population structure of Criollo Lechero Tropical and Romosinuano cattle breeds in Mexico

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