Genetic study of quantitative traits supports the use of Guzerá as dual-purpose cattle
Objective The aim of this study was to estimate genetic parameters for 305-day cumulative milk yield and components, growth, and reproductive traits in Guzerá cattle. Methods The evaluated traits were 305-day first-lactation cumulative yields (kg) of milk (MY305), fat (FY305), protein (PY305), lacto...
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| Format: | Article |
| Language: | English |
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Asian-Australasian Association of Animal Production Societies
2022-07-01
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| Series: | Animal Bioscience |
| Subjects: | |
| Online Access: | http://www.animbiosci.org/upload/pdf/ab-21-0458.pdf |
| _version_ | 1823938165260419072 |
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| author | Eula Regina Carrara Maria Gabriela Campolina Diniz Peixoto Renata Veroneze Fabyano Fonseca e Silva Pedro Vital Brasil Ramos Frank Angelo Tomita Bruneli Lenira El Faro Zadra Henrique Torres Ventura Luiz Antônio Josahkian Paulo Sávio Lopes |
| author_facet | Eula Regina Carrara Maria Gabriela Campolina Diniz Peixoto Renata Veroneze Fabyano Fonseca e Silva Pedro Vital Brasil Ramos Frank Angelo Tomita Bruneli Lenira El Faro Zadra Henrique Torres Ventura Luiz Antônio Josahkian Paulo Sávio Lopes |
| author_sort | Eula Regina Carrara |
| collection | DOAJ |
| description | Objective The aim of this study was to estimate genetic parameters for 305-day cumulative milk yield and components, growth, and reproductive traits in Guzerá cattle. Methods The evaluated traits were 305-day first-lactation cumulative yields (kg) of milk (MY305), fat (FY305), protein (PY305), lactose (LY305), and total solids (SY305); age at first calving (AFC) in days; adjusted scrotal perimeter (cm) at the ages of 365 (SP365) and 450 (SP450) days; and adjusted body weight (kg) at the ages of 210 (W210), 365 (W365), and 450 (W450) days. The (co)variance components were estimated using the restricted maximum likelihood method for single-trait, bi-trait and tri-trait analyses. Contemporary groups and additive genetic effects were included in the general mixed model. Maternal genetic and permanent environmental effects were also included for W210. Results The direct heritability estimates ranged from 0.16 (W210) to 0.32 (MY305). The maternal heritability estimate for W210 was 0.03. Genetic correlation estimates among milk production traits and growth traits ranged from 0.92 to 0.99 and from 0.92 to 0.99, respectively. For milk production and growth traits, the genetic correlations ranged from 0.33 to 0.56. The genetic correlations among AFC and all other traits were negative (−0.43 to −0.27). Scrotal perimeter traits and body weights showed genetic correlations ranging from 0.41 to 0.46, and scrotal perimeter and milk production traits showed genetic correlations ranging from 0.11 to 0.30. The phenotypic correlations were similar in direction (same sign) and lower than the corresponding genetic correlations. Conclusion These results suggest the viability and potential of joint selection for dairy and beef traits in Guzerá cattle, taking into account reproductive traits. |
| first_indexed | 2024-12-17T02:41:29Z |
| format | Article |
| id | doaj.art-43374f331be94366af0e99489118ca1f |
| institution | Directory Open Access Journal |
| issn | 2765-0189 2765-0235 |
| language | English |
| last_indexed | 2024-12-17T02:41:29Z |
| publishDate | 2022-07-01 |
| publisher | Asian-Australasian Association of Animal Production Societies |
| record_format | Article |
| series | Animal Bioscience |
| spelling | doaj.art-43374f331be94366af0e99489118ca1f2022-12-21T22:06:42ZengAsian-Australasian Association of Animal Production SocietiesAnimal Bioscience2765-01892765-02352022-07-0135795596310.5713/ab.21.045824816Genetic study of quantitative traits supports the use of Guzerá as dual-purpose cattleEula Regina Carrara0Maria Gabriela Campolina Diniz Peixoto1Renata Veroneze2Fabyano Fonseca e Silva3Pedro Vital Brasil Ramos4Frank Angelo Tomita Bruneli5Lenira El Faro Zadra6Henrique Torres Ventura7Luiz Antônio Josahkian8Paulo Sávio Lopes9 Department of Animal Science, Federal University of Viçosa, Viçosa, MG, 36570-900, Brazil Embrapa Dairy Cattle, Juiz de Fora, MG, 36038-330, Brazil Department of Animal Science, Federal University of Viçosa, Viçosa, MG, 36570-900, Brazil Department of Animal Science, Federal University of Viçosa, Viçosa, MG, 36570-900, Brazil Department of Animal Science, Federal University of Viçosa, Viçosa, MG, 36570-900, Brazil Embrapa Dairy Cattle, Juiz de Fora, MG, 36038-330, Brazil Brazilian Center for the Genetic Improvement of Guzerá, Belo Horizonte, MG, 30315-380, Brazil Brazilian Association of Zebu Breeders, Uberaba, MG, 38022-330, Brazil Brazilian Association of Zebu Breeders, Uberaba, MG, 38022-330, Brazil Department of Animal Science, Federal University of Viçosa, Viçosa, MG, 36570-900, BrazilObjective The aim of this study was to estimate genetic parameters for 305-day cumulative milk yield and components, growth, and reproductive traits in Guzerá cattle. Methods The evaluated traits were 305-day first-lactation cumulative yields (kg) of milk (MY305), fat (FY305), protein (PY305), lactose (LY305), and total solids (SY305); age at first calving (AFC) in days; adjusted scrotal perimeter (cm) at the ages of 365 (SP365) and 450 (SP450) days; and adjusted body weight (kg) at the ages of 210 (W210), 365 (W365), and 450 (W450) days. The (co)variance components were estimated using the restricted maximum likelihood method for single-trait, bi-trait and tri-trait analyses. Contemporary groups and additive genetic effects were included in the general mixed model. Maternal genetic and permanent environmental effects were also included for W210. Results The direct heritability estimates ranged from 0.16 (W210) to 0.32 (MY305). The maternal heritability estimate for W210 was 0.03. Genetic correlation estimates among milk production traits and growth traits ranged from 0.92 to 0.99 and from 0.92 to 0.99, respectively. For milk production and growth traits, the genetic correlations ranged from 0.33 to 0.56. The genetic correlations among AFC and all other traits were negative (−0.43 to −0.27). Scrotal perimeter traits and body weights showed genetic correlations ranging from 0.41 to 0.46, and scrotal perimeter and milk production traits showed genetic correlations ranging from 0.11 to 0.30. The phenotypic correlations were similar in direction (same sign) and lower than the corresponding genetic correlations. Conclusion These results suggest the viability and potential of joint selection for dairy and beef traits in Guzerá cattle, taking into account reproductive traits.http://www.animbiosci.org/upload/pdf/ab-21-0458.pdfbeef cattle dairy cattlegenetic parameterssexual precocityguzerá |
| spellingShingle | Eula Regina Carrara Maria Gabriela Campolina Diniz Peixoto Renata Veroneze Fabyano Fonseca e Silva Pedro Vital Brasil Ramos Frank Angelo Tomita Bruneli Lenira El Faro Zadra Henrique Torres Ventura Luiz Antônio Josahkian Paulo Sávio Lopes Genetic study of quantitative traits supports the use of Guzerá as dual-purpose cattle Animal Bioscience beef cattle dairy cattle genetic parameters sexual precocity guzerá |
| title | Genetic study of quantitative traits supports the use of Guzerá as dual-purpose cattle |
| title_full | Genetic study of quantitative traits supports the use of Guzerá as dual-purpose cattle |
| title_fullStr | Genetic study of quantitative traits supports the use of Guzerá as dual-purpose cattle |
| title_full_unstemmed | Genetic study of quantitative traits supports the use of Guzerá as dual-purpose cattle |
| title_short | Genetic study of quantitative traits supports the use of Guzerá as dual-purpose cattle |
| title_sort | genetic study of quantitative traits supports the use of guzera as dual purpose cattle |
| topic | beef cattle dairy cattle genetic parameters sexual precocity guzerá |
| url | http://www.animbiosci.org/upload/pdf/ab-21-0458.pdf |
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