Study on lactation performance and development of KASP marker for milk traits in Xinjiang donkey (Equus asinus).
Abstract: Donkey milk has high nutritional and medicinal value, but there are few researches in donkey milk traits, especially on genome. The whole lactation of 89 donkeys was recorded and it was found that Xinjiang donkey had good lactation performance while great differences among individuals. In our previous study, four genes including , , and were identified as milk-associated with Chinese Kazakh house, based on Equine 670k Chip genomic analysis. And then 15 SNPs of the four key genes were conducted for genotyping in Xinjiang donkey in this study, one of Chinese indigenous breed, 14 SNPs were successful classified. And those SNPs were correlation analysis with milk yield of Xinjiang donkeys. The results showed that g.46709914T > G was significantly correlated with daily milk yield of Xinjiang donkey in the early, middle, and late periods, while g.48366302T > C, g.89567442T > G and g.89598328T > A were significantly correlated with lactation in the late periods. These results indicate that g.46709914T > G can be as markers of candidate genes for lactating traits in donkeys, SNPs of and as potential. Our findings will not only help confirm key genes for donkey milk traits, but also provide future for genomic selection in donkeys.
Publication Date: 2022-08-25 PubMed ID: 36007548DOI: 10.1080/10495398.2022.2114002Google Scholar: Lookup
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- Journal Article
Summary
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The research paper focuses on the lactation performance and genetic markers related to milk traits observed in the Xinjiang donkey breed. The researchers identified several Single Nucleotide Polymorphisms (SNPs) that are connected with varying milk yield which could be beneficial for future genomic selection in donkeys.
Research Objective
- The aim of this research was to study the lactation performance of the Xinjiang donkey, a breed indigenous to China, and identify potential genetic markers that are linked to milk traits. This study aimed to fill gaps in existing knowledge about donkey milk characteristics, particularly relating to genetics, and to support future genomic selection in donkeys.
Methods
- The researchers conducted detailed monitoring of the lactation performance throughout the entire lactation period of 89 donkeys from the Xinjiang breed.
- In a prior research, the team had identified four genes as being associated with milk qualities in Chinese Kazakh horses, based on analysis using the Equine 670k Chip. These four genes were investigated in the Xinjiang donkeys in the current study.
- A total of 15 Single Nucleotide Polymorphisms (SNPs) – variations that occur at a single position in a DNA sequence – located within these four genes were analyzed in this study. The aim was to genotype these SNPs in the Xinjiang donkey breed.
Findings
- The researchers successfully classified 14 out of the 15 SNPs in the Xinjiang donkeys. They then conducted a correlation analysis between these SNPs and the milk yield of the donkeys.
- The variant g.46709914T > G was found to have a significant correlation with the daily milk yield of the Xinjiang donkey during the early, middle, and late lactation periods.
- The SNPs g.48366302T > C, g.89567442T > G and g.89598328T > A also demonstrated significant relationships with lactation in the late periods.
- These findings suggest that g.46709914T > G could be used as a genetic marker for lactation traits in donkeys; the SNPs found in other genes also show potential.
Conclusion and Future Implications
- This investigation not only helps identify key genes that might influence donkey milk traits, but has also unveiled potential markers that could be useful for future genomic selection in donkeys.
- The findings of this study could provide beneficial insights for ensuring the quality of donkey milk and contribute towards the development of genomic selection methods to improve donkey breeds.
Cite This Article
APA
He HY, Liu LL, Chen B, Xiao HX, Liu WJ.
(2022).
Study on lactation performance and development of KASP marker for milk traits in Xinjiang donkey (Equus asinus).
Anim Biotechnol, 1-12.
https://doi.org/10.1080/10495398.2022.2114002 Publication
Researcher Affiliations
- Faculty of Animal Science, Xinjiang Agricultural University, Urumqi, Xinjiang, China.
- Faculty of Animal Science, Xinjiang Agricultural University, Urumqi, Xinjiang, China.
- Faculty of Animal Science, Xinjiang Agricultural University, Urumqi, Xinjiang, China.
- Institute of Animal Husbandry, Xinjiang Academy of Animal Sciences, Urumqi, Xinjiang, China.
- Faculty of Animal Science, Xinjiang Agricultural University, Urumqi, Xinjiang, China.
Citations
This article has been cited 2 times.- Huang B, Khan MZ, Chai W, Ullah Q, Wang C. Exploring Genetic Markers: Mitochondrial DNA and Genomic Screening for Biodiversity and Production Traits in Donkeys.. Animals (Basel) 2023 Aug 27;13(17).
- Xiang X, Huang X, Wang J, Zhang H, Zhou W, Xu C, Huang Y, Tan Y, Yin Z. Transcriptome Analysis of the Ovaries of Taihe Black-Bone Silky Fowls at Different Egg-Laying Stages.. Genes (Basel) 2022 Nov 8;13(11).
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