Discrimination ability of Santa Inês and crossbred Santa Inês × Dorper lamb heavy carcasses by the Brazilian and European classification systems
ABSTRACT The ability of discriminating carcass characteristics of different fat cover scores of heavy carcasses, according to the European (EUS) and Brazilian (BRS) classification systems, was assessed. Fifty-six lambs, weighing between 26.25 and 46.15 kg, of the Santa Inês and crossbred Santa Inês...
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| Format: | Article |
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Sociedade Brasileira de Zootecnia
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| Series: | Revista Brasileira de Zootecnia |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000600527&lng=en&tlng=en |
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| author | Alyne Cristina Sodré Lima Marco Antonio Paula de Sousa Jonas Carneiro Araújo Manuella Paula de Mesquita Nunes Eziquiel de Morais Stefano Juliano Tavares de Andrade Luciara Celi da Silva Chaves André Guimarães Maciel e Silva |
| author_facet | Alyne Cristina Sodré Lima Marco Antonio Paula de Sousa Jonas Carneiro Araújo Manuella Paula de Mesquita Nunes Eziquiel de Morais Stefano Juliano Tavares de Andrade Luciara Celi da Silva Chaves André Guimarães Maciel e Silva |
| author_sort | Alyne Cristina Sodré Lima |
| collection | DOAJ |
| description | ABSTRACT The ability of discriminating carcass characteristics of different fat cover scores of heavy carcasses, according to the European (EUS) and Brazilian (BRS) classification systems, was assessed. Fifty-six lambs, weighing between 26.25 and 46.15 kg, of the Santa Inês and crossbred Santa Inês × Dorper genetic groups were evaluated. The level of adiposity was assessed through color photography of the carcasses after refrigeration according to the EUS and BRS. The carcasses were assigned to four groups by cluster analysis according to 25 variables, namely, cold carcass weight; muscle; bone; fat; and muscle:fat and fat:bone ratios of the carcass and cuts (hindquarter, shoulder, back); kidney, pelvic, and inguinal fat; and subcutaneous fat thickness. Of the four groups obtained by cluster analysis, the scores according to the different classification systems only statistically differed between groups 1 and 4. The BRS had a higher number of variables well correlated with the scores by assessors than the groups classified by the EUS. The BRS was better correlated with tissue composition. However, most variables were better correlated with backfat thickness than the score obtained through the classification systems. Better results were obtained regarding the prediction of carcass fat by the BRS using backfat thickness or cold carcass weight. The Brazilian lamb carcass classification system better predicts tissue composition and is the best method to discriminate intermediate-fat classes when associated with cold carcass weight. |
| first_indexed | 2024-12-19T10:21:57Z |
| format | Article |
| id | doaj.art-8315f2c8e49242b39c8edcc186d0df73 |
| institution | Directory Open Access Journal |
| issn | 1806-9290 |
| language | English |
| last_indexed | 2024-12-19T10:21:57Z |
| publisher | Sociedade Brasileira de Zootecnia |
| record_format | Article |
| series | Revista Brasileira de Zootecnia |
| spelling | doaj.art-8315f2c8e49242b39c8edcc186d0df732022-12-21T20:26:02ZengSociedade Brasileira de ZootecniaRevista Brasileira de Zootecnia1806-929046652753610.1590/s1806-92902017000600008S1516-35982017000600527Discrimination ability of Santa Inês and crossbred Santa Inês × Dorper lamb heavy carcasses by the Brazilian and European classification systemsAlyne Cristina Sodré LimaMarco Antonio Paula de SousaJonas Carneiro AraújoManuella Paula de Mesquita NunesEziquiel de MoraisStefano Juliano Tavares de AndradeLuciara Celi da Silva ChavesAndré Guimarães Maciel e SilvaABSTRACT The ability of discriminating carcass characteristics of different fat cover scores of heavy carcasses, according to the European (EUS) and Brazilian (BRS) classification systems, was assessed. Fifty-six lambs, weighing between 26.25 and 46.15 kg, of the Santa Inês and crossbred Santa Inês × Dorper genetic groups were evaluated. The level of adiposity was assessed through color photography of the carcasses after refrigeration according to the EUS and BRS. The carcasses were assigned to four groups by cluster analysis according to 25 variables, namely, cold carcass weight; muscle; bone; fat; and muscle:fat and fat:bone ratios of the carcass and cuts (hindquarter, shoulder, back); kidney, pelvic, and inguinal fat; and subcutaneous fat thickness. Of the four groups obtained by cluster analysis, the scores according to the different classification systems only statistically differed between groups 1 and 4. The BRS had a higher number of variables well correlated with the scores by assessors than the groups classified by the EUS. The BRS was better correlated with tissue composition. However, most variables were better correlated with backfat thickness than the score obtained through the classification systems. Better results were obtained regarding the prediction of carcass fat by the BRS using backfat thickness or cold carcass weight. The Brazilian lamb carcass classification system better predicts tissue composition and is the best method to discriminate intermediate-fat classes when associated with cold carcass weight.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000600527&lng=en&tlng=enconformationnon-specialized breedstissue composition |
| spellingShingle | Alyne Cristina Sodré Lima Marco Antonio Paula de Sousa Jonas Carneiro Araújo Manuella Paula de Mesquita Nunes Eziquiel de Morais Stefano Juliano Tavares de Andrade Luciara Celi da Silva Chaves André Guimarães Maciel e Silva Discrimination ability of Santa Inês and crossbred Santa Inês × Dorper lamb heavy carcasses by the Brazilian and European classification systems Revista Brasileira de Zootecnia conformation non-specialized breeds tissue composition |
| title | Discrimination ability of Santa Inês and crossbred Santa Inês × Dorper lamb heavy carcasses by the Brazilian and European classification systems |
| title_full | Discrimination ability of Santa Inês and crossbred Santa Inês × Dorper lamb heavy carcasses by the Brazilian and European classification systems |
| title_fullStr | Discrimination ability of Santa Inês and crossbred Santa Inês × Dorper lamb heavy carcasses by the Brazilian and European classification systems |
| title_full_unstemmed | Discrimination ability of Santa Inês and crossbred Santa Inês × Dorper lamb heavy carcasses by the Brazilian and European classification systems |
| title_short | Discrimination ability of Santa Inês and crossbred Santa Inês × Dorper lamb heavy carcasses by the Brazilian and European classification systems |
| title_sort | discrimination ability of santa ines and crossbred santa ines dorper lamb heavy carcasses by the brazilian and european classification systems |
| topic | conformation non-specialized breeds tissue composition |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000600527&lng=en&tlng=en |
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