Mapping QTLs for Breast Muscle Weight in an F<sub>2</sub> Intercross between Native Japanese Nagoya and White Plymouth Rock Chicken Breeds
Nagoya (NAG), a native Japanese chicken breed, has high quality meat but low meat yield, whereas White Plymouth Rock (WPR), a parental breed of commercial broilers, has rapid growth but high body fat. We previously reported three quantitative trait loci (QTLs) for early postnatal growth in 239 F<...
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MDPI AG
2021-07-01
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| author | Akira Ishikawa Bothaina H. Essa Sherif M. Nasr Sae Suzuki |
| author_facet | Akira Ishikawa Bothaina H. Essa Sherif M. Nasr Sae Suzuki |
| author_sort | Akira Ishikawa |
| collection | DOAJ |
| description | Nagoya (NAG), a native Japanese chicken breed, has high quality meat but low meat yield, whereas White Plymouth Rock (WPR), a parental breed of commercial broilers, has rapid growth but high body fat. We previously reported three quantitative trait loci (QTLs) for early postnatal growth in 239 F<sub>2</sub> chickens between NAG and WPR breeds. In this study, using the same F<sub>2</sub> chickens at 4 weeks of age, we performed genome-wide QTL analysis for breast muscle weight, fat weight and serum and liver levels of biochemical parameters. Two significant QTLs for pectoralis minor and/or major weights were revealed on chromosome 2 between 108 Mb and 127 Mb and chromosome 4 between 10 Mb and 68 Mb. However, no QTL for the other traits was detected. The two QTLs explained 7.0–11.1% of the phenotypic variances, and their alleles derived from WPR increased muscle weights. The chromosome 2 QTL may be a novel locus, whereas the chromosome 4 QTL coincided with a known QTL for meat quality. The findings provide information that is beneficial for genetic improvement of meat yield for the lean NAG breed and, furthermore, provide a better understanding of the genetic basis of chicken muscle development. |
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| issn | 2075-1729 |
| language | English |
| last_indexed | 2024-03-10T08:39:44Z |
| publishDate | 2021-07-01 |
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| spelling | doaj.art-1d91d6a11f2245cca46c5c1be817d5592023-11-22T08:22:24ZengMDPI AGLife2075-17292021-07-0111875410.3390/life11080754Mapping QTLs for Breast Muscle Weight in an F<sub>2</sub> Intercross between Native Japanese Nagoya and White Plymouth Rock Chicken BreedsAkira Ishikawa0Bothaina H. Essa1Sherif M. Nasr2Sae Suzuki3Laboratory of Animal Genetics and Breeding, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya 464-8601, JapanLaboratory of Animal Genetics and Breeding, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya 464-8601, JapanFaculty of Veterinary Medicine, Damanhour University, Damanhour 22511, EgyptLaboratory of Animal Genetics and Breeding, Graduate School of Bioagricultural Sciences, Nagoya University, Chikusa, Nagoya 464-8601, JapanNagoya (NAG), a native Japanese chicken breed, has high quality meat but low meat yield, whereas White Plymouth Rock (WPR), a parental breed of commercial broilers, has rapid growth but high body fat. We previously reported three quantitative trait loci (QTLs) for early postnatal growth in 239 F<sub>2</sub> chickens between NAG and WPR breeds. In this study, using the same F<sub>2</sub> chickens at 4 weeks of age, we performed genome-wide QTL analysis for breast muscle weight, fat weight and serum and liver levels of biochemical parameters. Two significant QTLs for pectoralis minor and/or major weights were revealed on chromosome 2 between 108 Mb and 127 Mb and chromosome 4 between 10 Mb and 68 Mb. However, no QTL for the other traits was detected. The two QTLs explained 7.0–11.1% of the phenotypic variances, and their alleles derived from WPR increased muscle weights. The chromosome 2 QTL may be a novel locus, whereas the chromosome 4 QTL coincided with a known QTL for meat quality. The findings provide information that is beneficial for genetic improvement of meat yield for the lean NAG breed and, furthermore, provide a better understanding of the genetic basis of chicken muscle development.https://www.mdpi.com/2075-1729/11/8/754breast muscle weightchickensNagoyaQTLWhite Plymouth Rock |
| spellingShingle | Akira Ishikawa Bothaina H. Essa Sherif M. Nasr Sae Suzuki Mapping QTLs for Breast Muscle Weight in an F<sub>2</sub> Intercross between Native Japanese Nagoya and White Plymouth Rock Chicken Breeds Life breast muscle weight chickens Nagoya QTL White Plymouth Rock |
| title | Mapping QTLs for Breast Muscle Weight in an F<sub>2</sub> Intercross between Native Japanese Nagoya and White Plymouth Rock Chicken Breeds |
| title_full | Mapping QTLs for Breast Muscle Weight in an F<sub>2</sub> Intercross between Native Japanese Nagoya and White Plymouth Rock Chicken Breeds |
| title_fullStr | Mapping QTLs for Breast Muscle Weight in an F<sub>2</sub> Intercross between Native Japanese Nagoya and White Plymouth Rock Chicken Breeds |
| title_full_unstemmed | Mapping QTLs for Breast Muscle Weight in an F<sub>2</sub> Intercross between Native Japanese Nagoya and White Plymouth Rock Chicken Breeds |
| title_short | Mapping QTLs for Breast Muscle Weight in an F<sub>2</sub> Intercross between Native Japanese Nagoya and White Plymouth Rock Chicken Breeds |
| title_sort | mapping qtls for breast muscle weight in an f sub 2 sub intercross between native japanese nagoya and white plymouth rock chicken breeds |
| topic | breast muscle weight chickens Nagoya QTL White Plymouth Rock |
| url | https://www.mdpi.com/2075-1729/11/8/754 |
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