Energy and protein requirements for growth of Holstein × Gyr heifers
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2017 |
| Outros Autores: | , , , , , , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | LOCUS Repositório Institucional da UFV |
| Texto Completo: | https://doi.org/10.1111/jpn.12661 http://www.locus.ufv.br/handle/123456789/13301 |
Resumo: | Não consta o volume, numero de serie e numero de paginas. |
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Silva, F. A. S.Valadares Filho, S. C.Rennó, L. N.Zanetti, D.Silva, L. F. Costa eGodoi, L. A.Vieira, J. M. P.Menezes, A. C. B.Pucetti, P.Rotta, P. P.2017-11-20T11:16:07Z2017-11-20T11:16:07Z2017-03-1614390396https://doi.org/10.1111/jpn.12661http://www.locus.ufv.br/handle/123456789/13301Não consta o volume, numero de serie e numero de paginas.There is little information regarding the nutritional requirements for dairy heifers, leading the majority of nutrient requirement systems to consider dairy heifers to be similar to beef heifers. Therefore, we evaluated the muscle protein metabolism and physical and chemical body composition of growing Holstein × Gyr heifers and estimated the energy and protein requirements. We performed a comparative slaughter experiment with 20 Holstein × Gyr heifers at an initial body weight of 218 ± 36.5 kg and an average age of 12 ± 1.0 months. Four heifers were designated as the reference group, and the 16 remaining heifers were fed ad libitum. The 16 heifers were distributed using a completely randomized design in a 2 × 2 factorial arrangement with two roughages (corn silage or sugarcane) and two concentrate levels (30 or 50%) for 112 days. Greater (p < 0.05) values for fractional rates of muscle protein synthesis, degradation and accretion were observed for heifers that were fed 50% concentrate. The following equations were obtained to estimate the net energy for gain (NEg) and net protein for gain (NPg): NEg (Mcal/day) = 0.0685 × EBW0.75 × EBWG1.095 and NPg (g/day) = 203.8 × EBWG − 14.80 × RE, respectively, in which EBW is the empty body weight, EBWG is the empty body weight gain and RE is the retained energy. We concluded that increased rates of protein turnover are achieved when a greater quality diet is provided. In the future, these results can be used to calculate the nutritional requirements for growth of Holstein × Gyr heifers after equation validation rather than using the recommendations provided by other systems, which use values developed from beef heifers, to determine the nutritional requirements of dairy cattle.engJournal of Animal Physiology and Animal NutritionMarch 2017Comparative slaughterProtein turnoverSugarcaneTissue depositionEnergy and protein requirements for growth of Holstein × Gyr heifersinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALSilva_et_al-2017-Journal_of_Animal_Physiology_and_Animal_Nutrition.pdfSilva_et_al-2017-Journal_of_Animal_Physiology_and_Animal_Nutrition.pdfTexto completoapplication/pdf381978https://locus.ufv.br//bitstream/123456789/13301/1/Silva_et_al-2017-Journal_of_Animal_Physiology_and_Animal_Nutrition.pdfafb06bb39fa42db0fe55d296d8010520MD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748https://locus.ufv.br//bitstream/123456789/13301/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52THUMBNAILSilva_et_al-2017-Journal_of_Animal_Physiology_and_Animal_Nutrition.pdf.jpgSilva_et_al-2017-Journal_of_Animal_Physiology_and_Animal_Nutrition.pdf.jpgIM Thumbnailimage/jpeg5599https://locus.ufv.br//bitstream/123456789/13301/3/Silva_et_al-2017-Journal_of_Animal_Physiology_and_Animal_Nutrition.pdf.jpg05d2a9b8f568c361813a33f292cf95ebMD53123456789/133012017-11-20 22:00:59.385oai:locus.ufv.br:123456789/13301Tk9URTogUExBQ0UgWU9VUiBPV04gTElDRU5TRSBIRVJFClRoaXMgc2FtcGxlIGxpY2Vuc2UgaXMgcHJvdmlkZWQgZm9yIGluZm9ybWF0aW9uYWwgcHVycG9zZXMgb25seS4KCk5PTi1FWENMVVNJVkUgRElTVFJJQlVUSU9OIExJQ0VOU0UKCkJ5IHNpZ25pbmcgYW5kIHN1Ym1pdHRpbmcgdGhpcyBsaWNlbnNlLCB5b3UgKHRoZSBhdXRob3Iocykgb3IgY29weXJpZ2h0Cm93bmVyKSBncmFudHMgdG8gRFNwYWNlIFVuaXZlcnNpdHkgKERTVSkgdGhlIG5vbi1leGNsdXNpdmUgcmlnaHQgdG8gcmVwcm9kdWNlLAp0cmFuc2xhdGUgKGFzIGRlZmluZWQgYmVsb3cpLCBhbmQvb3IgZGlzdHJpYnV0ZSB5b3VyIHN1Ym1pc3Npb24gKGluY2x1ZGluZwp0aGUgYWJzdHJhY3QpIHdvcmxkd2lkZSBpbiBwcmludCBhbmQgZWxlY3Ryb25pYyBmb3JtYXQgYW5kIGluIGFueSBtZWRpdW0sCmluY2x1ZGluZyBidXQgbm90IGxpbWl0ZWQgdG8gYXVkaW8gb3IgdmlkZW8uCgpZb3UgYWdyZWUgdGhhdCBEU1UgbWF5LCB3aXRob3V0IGNoYW5naW5nIHRoZSBjb250ZW50LCB0cmFuc2xhdGUgdGhlCnN1Ym1pc3Npb24gdG8gYW55IG1lZGl1bSBvciBmb3JtYXQgZm9yIHRoZSBwdXJwb3NlIG9mIHByZXNlcnZhdGlvbi4KCllvdSBhbHNvIGFncmVlIHRoYXQgRFNVIG1heSBrZWVwIG1vcmUgdGhhbiBvbmUgY29weSBvZiB0aGlzIHN1Ym1pc3Npb24gZm9yCnB1cnBvc2VzIG9mIHNlY3VyaXR5LCBiYWNrLXVwIGFuZCBwcmVzZXJ2YXRpb24uCgpZb3UgcmVwcmVzZW50IHRoYXQgdGhlIHN1Ym1pc3Npb24gaXMgeW91ciBvcmlnaW5hbCB3b3JrLCBhbmQgdGhhdCB5b3UgaGF2ZQp0aGUgcmlnaHQgdG8gZ3JhbnQgdGhlIHJpZ2h0cyBjb250YWluZWQgaW4gdGhpcyBsaWNlbnNlLiBZb3UgYWxzbyByZXByZXNlbnQKdGhhdCB5b3VyIHN1Ym1pc3Npb24gZG9lcyBub3QsIHRvIHRoZSBiZXN0IG9mIHlvdXIga25vd2xlZGdlLCBpbmZyaW5nZSB1cG9uCmFueW9uZSdzIGNvcHlyaWdodC4KCklmIHRoZSBzdWJtaXNzaW9uIGNvbnRhaW5zIG1hdGVyaWFsIGZvciB3aGljaCB5b3UgZG8gbm90IGhvbGQgY29weXJpZ2h0LAp5b3UgcmVwcmVzZW50IHRoYXQgeW91IGhhdmUgb2J0YWluZWQgdGhlIHVucmVzdHJpY3RlZCBwZXJtaXNzaW9uIG9mIHRoZQpjb3B5cmlnaHQgb3duZXIgdG8gZ3JhbnQgRFNVIHRoZSByaWdodHMgcmVxdWlyZWQgYnkgdGhpcyBsaWNlbnNlLCBhbmQgdGhhdApzdWNoIHRoaXJkLXBhcnR5IG93bmVkIG1hdGVyaWFsIGlzIGNsZWFybHkgaWRlbnRpZmllZCBhbmQgYWNrbm93bGVkZ2VkCndpdGhpbiB0aGUgdGV4dCBvciBjb250ZW50IG9mIHRoZSBzdWJtaXNzaW9uLgoKSUYgVEhFIFNVQk1JU1NJT04gSVMgQkFTRUQgVVBPTiBXT1JLIFRIQVQgSEFTIEJFRU4gU1BPTlNPUkVEIE9SIFNVUFBPUlRFRApCWSBBTiBBR0VOQ1kgT1IgT1JHQU5JWkFUSU9OIE9USEVSIFRIQU4gRFNVLCBZT1UgUkVQUkVTRU5UIFRIQVQgWU9VIEhBVkUKRlVMRklMTEVEIEFOWSBSSUdIVCBPRiBSRVZJRVcgT1IgT1RIRVIgT0JMSUdBVElPTlMgUkVRVUlSRUQgQlkgU1VDSApDT05UUkFDVCBPUiBBR1JFRU1FTlQuCgpEU1Ugd2lsbCBjbGVhcmx5IGlkZW50aWZ5IHlvdXIgbmFtZShzKSBhcyB0aGUgYXV0aG9yKHMpIG9yIG93bmVyKHMpIG9mIHRoZQpzdWJtaXNzaW9uLCBhbmQgd2lsbCBub3QgbWFrZSBhbnkgYWx0ZXJhdGlvbiwgb3RoZXIgdGhhbiBhcyBhbGxvd2VkIGJ5IHRoaXMKbGljZW5zZSwgdG8geW91ciBzdWJtaXNzaW9uLgo=Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452017-11-21T01:00:59LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
| dc.title.en.fl_str_mv |
Energy and protein requirements for growth of Holstein × Gyr heifers |
| title |
Energy and protein requirements for growth of Holstein × Gyr heifers |
| spellingShingle |
Energy and protein requirements for growth of Holstein × Gyr heifers Silva, F. A. S. Comparative slaughter Protein turnover Sugarcane Tissue deposition |
| title_short |
Energy and protein requirements for growth of Holstein × Gyr heifers |
| title_full |
Energy and protein requirements for growth of Holstein × Gyr heifers |
| title_fullStr |
Energy and protein requirements for growth of Holstein × Gyr heifers |
| title_full_unstemmed |
Energy and protein requirements for growth of Holstein × Gyr heifers |
| title_sort |
Energy and protein requirements for growth of Holstein × Gyr heifers |
| author |
Silva, F. A. S. |
| author_facet |
Silva, F. A. S. Valadares Filho, S. C. Rennó, L. N. Zanetti, D. Silva, L. F. Costa e Godoi, L. A. Vieira, J. M. P. Menezes, A. C. B. Pucetti, P. Rotta, P. P. |
| author_role |
author |
| author2 |
Valadares Filho, S. C. Rennó, L. N. Zanetti, D. Silva, L. F. Costa e Godoi, L. A. Vieira, J. M. P. Menezes, A. C. B. Pucetti, P. Rotta, P. P. |
| author2_role |
author author author author author author author author author |
| dc.contributor.author.fl_str_mv |
Silva, F. A. S. Valadares Filho, S. C. Rennó, L. N. Zanetti, D. Silva, L. F. Costa e Godoi, L. A. Vieira, J. M. P. Menezes, A. C. B. Pucetti, P. Rotta, P. P. |
| dc.subject.pt-BR.fl_str_mv |
Comparative slaughter Protein turnover Sugarcane Tissue deposition |
| topic |
Comparative slaughter Protein turnover Sugarcane Tissue deposition |
| description |
Não consta o volume, numero de serie e numero de paginas. |
| publishDate |
2017 |
| dc.date.accessioned.fl_str_mv |
2017-11-20T11:16:07Z |
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2017-11-20T11:16:07Z |
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2017-03-16 |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/article |
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article |
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https://doi.org/10.1111/jpn.12661 http://www.locus.ufv.br/handle/123456789/13301 |
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14390396 |
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14390396 |
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https://doi.org/10.1111/jpn.12661 http://www.locus.ufv.br/handle/123456789/13301 |
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eng |
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March 2017 |
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openAccess |
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Journal of Animal Physiology and Animal Nutrition |
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Journal of Animal Physiology and Animal Nutrition |
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