Beef quality traits of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers fed at the maintenance level or ad libitum with two concentrate levels in the diet
| العنوان: | Beef quality traits of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers fed at the maintenance level or ad libitum with two concentrate levels in the diet |
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| المؤلفون: | Edenio Detmann, Laura Franco Prados, Sebastião de Campos Valadares Filho, Ivanna Moraes de Oliveira, Marcos Inácio Marcondes, Pedro Veiga Rodrigues Paulino, Jucilene Cavali, Marcio de Souza Duarte |
| المصدر: | LOCUS Repositório Institucional da UFV Universidade Federal de Viçosa (UFV) instacron:UFV Revista Brasileira de Zootecnia v.40 n.12 2011 Revista Brasileira de Zootecnia Sociedade Brasileira de Zootecnia (SBZ) instacron:SBZ ResearcherID Revista Brasileira de Zootecnia, Vol 40, Iss 12, Pp 2894-2902 (2011) Revista Brasileira de Zootecnia, Volume: 40, Issue: 12, Pages: 2894-2902, Published: DEC 2011 |
| بيانات النشر: | Revista Brasileira de Zootecnia, 2011. |
| سنة النشر: | 2011 |
| مصطلحات موضوعية: | Beef quality, Muscular fibers, food and beverages, Beef cattle, Biology, Body weight, Crossbreed, beef quality, shear force, Cattle feeding, Young age, Animal science, Shear force, Feedlot, Group effect, muscular fibers, Animal Science and Zoology, lcsh:Animal culture, Muscle fibre, lcsh:SF1-1100 |
| الوصف: | This trial was conducted to evaluate some beef quality attributes of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers finished on feedlot. The effects of feeding regime and genetic group on shear force, thawing losses, cooking (leak + evaporation) losses, total losses and muscle fiber type, as well as carcass pH and temperature during 24 h of chilling were evaluated. There was a genetic group effect on shear force, where the beef from F1 Simmental × Nellore and F1 Angus × Nellore animals had lower values than Nellore animals. Beef of the animals fed the diets with 1% and 2% of body weight on concentrated lost more liquid than the meat of the animals fed at maintenance during thawing and when considering total losses. During cooking there was a difference among the feeding regimes for drip losses which were greater on the animals fed the diet of 1% of body weight on concentrate, followed by the 2% diet and, finally, by the animals fed at maintenance. The muscle of the Nellore steers had larger proportion of intermediate fibers and lower proportion of oxidative fibers than the crossbred animals. The proportion of glycolytic fibers was not influenced by genetic group. The Nellore animals had larger proportion of fibers of fast contraction and smaller proportion of fibers of slow contraction when compared with the crossbred animals. Feeding regime did not influence the proportion of muscular fibers or shear force. Nellore cattle produce tougher beef than crossbred Simmental × Nellore or Angus × Nellore, although all of them have the potential to produce an acceptable beef when slaughtered at young age. Feed restriction up to 90 days is not enough to cause modification on muscle fiber frequencies, then not affecting beef quality. |
| وصف الملف: | application/pdf; text/html |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53764349b768171ab34141763ad6ecb6 http://www.locus.ufv.br/handle/123456789/14978 |
| Rights: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....53764349b768171ab34141763ad6ecb6 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |