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Publication
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| Title of Article |
Integrating genomic selection for rapid improvement of milk yield in small-scale dairy farms |
| Date of Acceptance |
25 February 2022 |
| Journal |
| Title of Journal |
Applied Animal Science |
| Standard |
SCOPUS |
| Institute of Journal |
ELSEVIER |
| ISBN/ISSN |
25902873, 25902865 |
| Volume |
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| Issue |
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| Month |
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| Year of Publication |
2022 |
| Page |
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| Abstract |
Objective: The objective was to evaluate the efficiency of single-step genomic BLUP (ssGBLUP) compared to conventional BLUP regarding milk yield in Thai-Holstein dairy cows.
Materials and Methods: Data included 130,195 test-day milk yield records from the first parity of 16,383 cows between 1999 and 2018, divided into five data sets according to different regions of Thailand. Genetic analyses were estimated with the BLUP and ssGBLUP methods using a repeatability test-day model. Fixed effects included farm-calving season combination, breed group-months in milk combination, and age at first calving. Random effects included additive genetic effects, permanent environmental effects, and herd-month-year of test.
Results and Discussion: The heritability values for milk yield between BLUP and ssGBLUP methods did not yield any differences. However, those values among regions differed in accordance with environmental factors, i.e., weather and feed resources, which are apparently different among Thailand regions. The accuracy of the estimated breeding value in the ssGBLUP method (0.53–0.65) was higher than that of the BLUP method (0.50–0.60) in all regions, with a difference in accuracy from 3.85 to 8.33%. The estimated breeding values using the BLUP and ssGBLUP methods showed similar trends within regions, but those obtained by the ssGBLUP method were higher than those using the BLUP method in all regions. |
| Keyword |
genetic parameter; BLUP; ssGBLUP; Thai dairy cattle |
| Author |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ได้รับการตอบรับให้ตีพิมพ์ |
| Level of Publication |
นานาชาติ |
| citation |
false |
| Part of thesis |
false |
| Attach file |
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| Citation |
0
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Journal Publication
ไทย