1. ANÁLISE MULTIVARIADA NA MORFOMETRIA DO CASCO DE BOVINOS NELORE CONFINADOS E CRIADOS NA PASTAGEM.
- Author
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SANTOS, F. C., AMOROSO, L., FERRAUDO, A. S., JOSÉ NETO, A., ROSSI, L. G., BARALDI-ARTONI, S. M., and RODRIGUES, B. A.
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FORELIMB , *DOMESTIC animals , *PASTURE animals , *ANIMAL diseases , *FOOT diseases , *MORPHOMETRICS , *PELVIC floor , *GRASSLAND soils - Abstract
Intensive management favors the occurrence of inflammatory or infectious foot diseases in farm animals. The objective of the present study was to determine the impact on the hooves caused by the type of floor and also to verify the effectiveness of the multivariate exploratory analysis for this data set. For that, the analysis of digits external morphometry of Nellore cattle confined and on grazing was carried out. Twenty-four animals were evaluated, twelve of which were kept in confinement and the rest in pasture. Ruminants were slaughtered at 20 months of age. Sectioned in the carpometacarpal and tarsometatarsal joints, the extremities of the thoracic and pelvic limbs of the 24 animals were sampled and frozen at -20°C. Subsequently measured with a millimeter metric tape on the lateral and medial region of the digits to obtain the height of the abaxial and axial wall, length and width of the sole, length, width and height of the bulb and the length of the lateral wall of the hoof. The multivariate exploratory analysis of multiple correspondence showed an association between such measures in samples from individuals in confinement and pasture. Confined animals had higher axial and abaxial walls, higher bulb height and smaller sole. When kept in the pasture soil, the digits had a lower bulb and a longer sole length. Although there is individual variation in the hull morphometry, the environment alone can change its structure. Higher hoof wall in confined cattle suggests less wear on the keratinized portion, while the greater development of the sole in animals raised on pasture may be related to better distribution of forces on the support surface. Thus, it is observed that the environment modifies its anatomical structure. The multiple correspondence analysis is efficient in identifying dependencies between categories of external morphometric parameters of bovine hooves. [ABSTRACT FROM AUTHOR]
- Published
- 2020
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