Título:	Microstructure of Holstein and Gir breed adult bovine hooves : histomorphometry, three-dimensional microtomography and microhardness test evaluation
Outros títulos:	Microestrutura de cascos de bovinos adultos das raças Holandesa e Gi : avaliação por histomorfometria, microtomografia tridimensional e teste de microdureza
Autor(es):	Rabelo, Rogério Elias Vulcani, Valcinir Aloísio Scalla Sant'Ana, Fabiano José Ferreira de Silva, Luiz Antônio Franco da Assis, Bruno Moraes Araújo, G. H. M.
Assunto:	Bovino - doenças Microtomografia Podologia
Data de publicação:	Nov-2015
Editora:	Universidade Federal de Minas Gerais, Escola de Veterinária
Referência:	RABELO, Rogério Elias et al. Microstructure of Holstein and Gir breed adult bovine hooves: histomorphometry, three-dimensional microtomography and microhardness test evaluation. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, Belo Horizonte, v. 67, n. 6, p. 1492-1500, nov./dez. 2015. Disponível em: <http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000601492&lng=en&nrm=iso>. Acesso em: 18 abr. 2018. doi: http://dx.doi.org/10.1590/1678-4162-8282.
Abstract:	This study aimed to characterize and compare the aspects involved in the microstructural formation of the Holstein and Gir breed hoof wall by histomorphometry, three-dimensional microtomography and microhardness test techniques. Seventy-two (18H/18G thoracic and 18H/18G pelvic) Holstein (H) and Gir (G) breed hooves were collected in slaughterhouses. The hooves were divided into six groups according to breed and age group: 24 to 36 months (C1H/C1G), 36 to 60 months (C2H/C2G) and over 60 months (C3H/C3G). The normality and homogeneity analysis of morphometric variables by the Kolmogrov-Sminov and Bartlett tests was conducted as a statistical model. Once the assumptions were met, the Sigmastat 3.5 software was used and the means were compared by T test. The 5% probability level is considered. When the assumptions were not met, the means were compared by the Mann-Whitney nonparametric test, considering the 5% probability level. When comparing the Holstein and Gir breeds, no differences were noticed between them as to the length of the dermal papillae; young animals showed thicker papillae than adult animals; the Holstein breed hooves showed higher amount of 7pores on the wall and on the sole compared to the Gir breed; Holstein cattle hooves showed greater microhardness than Gir cattle; there was no microhardness difference between pigmented and non-pigmented hooves of Holstein and Gir cattle.
Unidade Acadêmica:	Faculdade de Agronomia e Medicina Veterinária (FAV)
Licença:	Arquivo Brasileiro de Medicina Veterinária e Zootecnia - This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0). Fonte: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352015000601492&lng=en&nrm=iso. Acesso em: 18 abr. 2018.
DOI:	http://dx.doi.org/10.1590/1678-4162-8282
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