Heritabilities and genetic correlations of body condition score and muscularity with productive traits and their trend functions in Italian Simmental cattle
With the aim to study the genetics of energy and muscle balance in the Italian Simmental breed, the objectives of this study were: i) the estimation of the genetic parameters for body condition score (BCS) and muscularity (MU) score; ii) the estimation of genetic correlations of BCS and MU with prod...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2013-05-01
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| Series: | Italian Journal of Animal Science |
| Subjects: | |
| Online Access: | http://www.aspajournal.it/index.php/ijas/article/view/2807 |
| _version_ | 1819225828425203712 |
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| author | Erika Frigo Antonia B. Samorè Daniele Vicario Alessandro Bagnato Ottavia Pedron |
| author_facet | Erika Frigo Antonia B. Samorè Daniele Vicario Alessandro Bagnato Ottavia Pedron |
| author_sort | Erika Frigo |
| collection | DOAJ |
| description | With the aim to study the genetics of energy and muscle balance in the Italian Simmental breed, the objectives of this study were: i) the estimation of the genetic parameters for body condition score (BCS) and muscularity (MU) score; ii) the estimation of genetic correlations of BCS and MU with productive traits; iii) the estimation of the expected pattern of BCS and MU over lactation. A total of 47,839 records of first-parity lactating cows, collected from 1999 to 2007 in 2794 herds, were used. Two-trait animal models were analyzed using restricted maximum likelihood (REML) procedures to estimate (co)variance components. The expected patterns of BCS and MU along the lactation of first parity cows were estimated from the solutions of DIM fixed effect obtained from an univariate mixed model for both the traits. The heritability estimated was 0.18 for BCS, 0.38 for MU, and ranged from 0.13 to 0.18 for yield traits. The genetic correlations between BCS, MU and yield traits were negative (-0.17 to -0.63). The genetic correlation between BCS and MU was strongly positive (0.88), indicating that cows that genetically tend to have high BCS are more likely to have high values of MU. The genetic parameters estimated suggested that selection for BCS and MU in dual purpose breeds may be possible, and BCS may indirectly improve MU. The expected patterns for BCS and MU showed the trend of these two traits along the lactation and can help farmers in planning the best management of the lactating cows. |
| first_indexed | 2024-12-23T10:15:48Z |
| format | Article |
| id | doaj.art-6efab2c51b0246e787219c3405065833 |
| institution | Directory Open Access Journal |
| issn | 1594-4077 1828-051X |
| language | English |
| last_indexed | 2024-12-23T10:15:48Z |
| publishDate | 2013-05-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Italian Journal of Animal Science |
| spelling | doaj.art-6efab2c51b0246e787219c34050658332022-12-21T17:50:49ZengTaylor & Francis GroupItalian Journal of Animal Science1594-40771828-051X2013-05-01122e40e4010.4081/ijas.2013.e402120Heritabilities and genetic correlations of body condition score and muscularity with productive traits and their trend functions in Italian Simmental cattleErika FrigoAntonia B. SamorèDaniele VicarioAlessandro BagnatoOttavia PedronWith the aim to study the genetics of energy and muscle balance in the Italian Simmental breed, the objectives of this study were: i) the estimation of the genetic parameters for body condition score (BCS) and muscularity (MU) score; ii) the estimation of genetic correlations of BCS and MU with productive traits; iii) the estimation of the expected pattern of BCS and MU over lactation. A total of 47,839 records of first-parity lactating cows, collected from 1999 to 2007 in 2794 herds, were used. Two-trait animal models were analyzed using restricted maximum likelihood (REML) procedures to estimate (co)variance components. The expected patterns of BCS and MU along the lactation of first parity cows were estimated from the solutions of DIM fixed effect obtained from an univariate mixed model for both the traits. The heritability estimated was 0.18 for BCS, 0.38 for MU, and ranged from 0.13 to 0.18 for yield traits. The genetic correlations between BCS, MU and yield traits were negative (-0.17 to -0.63). The genetic correlation between BCS and MU was strongly positive (0.88), indicating that cows that genetically tend to have high BCS are more likely to have high values of MU. The genetic parameters estimated suggested that selection for BCS and MU in dual purpose breeds may be possible, and BCS may indirectly improve MU. The expected patterns for BCS and MU showed the trend of these two traits along the lactation and can help farmers in planning the best management of the lactating cows.http://www.aspajournal.it/index.php/ijas/article/view/2807Body conditionMuscularitySimmental cattleGenetic correlationManagement |
| spellingShingle | Erika Frigo Antonia B. Samorè Daniele Vicario Alessandro Bagnato Ottavia Pedron Heritabilities and genetic correlations of body condition score and muscularity with productive traits and their trend functions in Italian Simmental cattle Italian Journal of Animal Science Body condition Muscularity Simmental cattle Genetic correlation Management |
| title | Heritabilities and genetic correlations of body condition score and muscularity with productive traits and their trend functions in Italian Simmental cattle |
| title_full | Heritabilities and genetic correlations of body condition score and muscularity with productive traits and their trend functions in Italian Simmental cattle |
| title_fullStr | Heritabilities and genetic correlations of body condition score and muscularity with productive traits and their trend functions in Italian Simmental cattle |
| title_full_unstemmed | Heritabilities and genetic correlations of body condition score and muscularity with productive traits and their trend functions in Italian Simmental cattle |
| title_short | Heritabilities and genetic correlations of body condition score and muscularity with productive traits and their trend functions in Italian Simmental cattle |
| title_sort | heritabilities and genetic correlations of body condition score and muscularity with productive traits and their trend functions in italian simmental cattle |
| topic | Body condition Muscularity Simmental cattle Genetic correlation Management |
| url | http://www.aspajournal.it/index.php/ijas/article/view/2807 |
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