Empty body chemical composition of Nellore steers estimated by indirect methods
Thirty-six Nellore steers at 20 months of age on average and initial body weight of 360 kg were fed ad libitum for 78 days and two levels of feed restriction for 58 days and posterior ad libitum feeding for 78 days were used to estimate body composition using the methods of indirect deuterium oxide...
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| Format: | Article |
| Language: | English |
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Instituto de Zootecnia
2021-07-01
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| Series: | Boletim de Indústria Animal |
| Subjects: | |
| Online Access: | http://www.iz.sp.gov.br/bia/index.php/bia/article/view/1755 |
| _version_ | 1811272674338406400 |
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| author | G. Aferri A. S. C. Pereira R. R. P. S. Corte S. L. Silva M. Z. Moreira P. R. Leme |
| author_facet | G. Aferri A. S. C. Pereira R. R. P. S. Corte S. L. Silva M. Z. Moreira P. R. Leme |
| author_sort | G. Aferri |
| collection | DOAJ |
| description | Thirty-six Nellore steers at 20 months of age on average and initial body weight of 360 kg were fed ad libitum for 78 days and two levels of feed restriction for 58 days and posterior ad libitum feeding for 78 days were used to estimate body composition using the methods of indirect deuterium oxide or the 9th-10th-11th ribs cut. The body water content was calculated with equations established for Nellore steers. The chemical body composition was different for the ether extract content. The animals subjected to feed restriction presented higher body fat content when estimated by deuterium than by the rib cut. The deuterium oxide or 9th-10th-11th ribs cut methods used for body composition determination were effective to estimate body contents for animals fed ad libitum, however, not for animals on feed restriction. Comparatively, the indirect method of deuterium oxide was better than the 9th-10th-11th ribs cut method to estimate body composition in Nellore steers submitted to feed restriction; however, both methods were similar in animals fed ad libitum. |
| first_indexed | 2024-04-12T22:44:35Z |
| format | Article |
| id | doaj.art-3a35881c3805488bac13e98ccb7d9d49 |
| institution | Directory Open Access Journal |
| issn | 0067-9615 1981-4100 |
| language | English |
| last_indexed | 2024-04-12T22:44:35Z |
| publishDate | 2021-07-01 |
| publisher | Instituto de Zootecnia |
| record_format | Article |
| series | Boletim de Indústria Animal |
| spelling | doaj.art-3a35881c3805488bac13e98ccb7d9d492022-12-22T03:13:35ZengInstituto de ZootecniaBoletim de Indústria Animal0067-96151981-41002021-07-017811210.17523/bia.2021.v78.e1495Empty body chemical composition of Nellore steers estimated by indirect methodsG. Aferri0https://orcid.org/0000-0001-7463-7838A. S. C. Pereira1https://orcid.org/0000-0001-7457-0792R. R. P. S. Corte2https://orcid.org/0000-0001-8995-6292S. L. Silva3https://orcid.org/0000-0002-0849-9948M. Z. Moreira4https://orcid.org/0000-0001-6769-5570P. R. Leme5https://orcid.org/0000-0002-5210-275XInstituto de Zootecnia, Nova Odessa - SP, BrazilUniversidade de São Paulo, USP, Faculdade de Medicina Veterinária e Zootecnia-FMVZ, Pirassununga-SPUniversidade de São Paulo, USP, Faculdade Zootecnia e Engenharia de Alimentos, Pirassununga, SP, BrazilUniversidade de São Paulo, USP, Faculdade Zootecnia e Engenharia de Alimentos, Pirassununga, SP, BrazilUniversidade de São Paulo, Centro de Energia Nuclear na Agricultura, USP, Piracicaba, SP, BrazilUniversidade de São Paulo, USP, Faculdade Zootecnia e Engenharia de Alimentos, Pirassununga, SP, BrazilThirty-six Nellore steers at 20 months of age on average and initial body weight of 360 kg were fed ad libitum for 78 days and two levels of feed restriction for 58 days and posterior ad libitum feeding for 78 days were used to estimate body composition using the methods of indirect deuterium oxide or the 9th-10th-11th ribs cut. The body water content was calculated with equations established for Nellore steers. The chemical body composition was different for the ether extract content. The animals subjected to feed restriction presented higher body fat content when estimated by deuterium than by the rib cut. The deuterium oxide or 9th-10th-11th ribs cut methods used for body composition determination were effective to estimate body contents for animals fed ad libitum, however, not for animals on feed restriction. Comparatively, the indirect method of deuterium oxide was better than the 9th-10th-11th ribs cut method to estimate body composition in Nellore steers submitted to feed restriction; however, both methods were similar in animals fed ad libitum.http://www.iz.sp.gov.br/bia/index.php/bia/article/view/1755beef cattlefat thicknessfeedlotfeed restrictionrib cut |
| spellingShingle | G. Aferri A. S. C. Pereira R. R. P. S. Corte S. L. Silva M. Z. Moreira P. R. Leme Empty body chemical composition of Nellore steers estimated by indirect methods Boletim de Indústria Animal beef cattle fat thickness feedlot feed restriction rib cut |
| title | Empty body chemical composition of Nellore steers estimated by indirect methods |
| title_full | Empty body chemical composition of Nellore steers estimated by indirect methods |
| title_fullStr | Empty body chemical composition of Nellore steers estimated by indirect methods |
| title_full_unstemmed | Empty body chemical composition of Nellore steers estimated by indirect methods |
| title_short | Empty body chemical composition of Nellore steers estimated by indirect methods |
| title_sort | empty body chemical composition of nellore steers estimated by indirect methods |
| topic | beef cattle fat thickness feedlot feed restriction rib cut |
| url | http://www.iz.sp.gov.br/bia/index.php/bia/article/view/1755 |
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