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Title: Effect of artificial shading on performance and reproductive parameters of semi-confined young Brangus bulls
Authors: Chiquitelli Neto, M.
Titto, C.G.
Titto, E.A.L.
Costa e Silva, T.S.
Puoli Filho, J.N.P
Leme, T.M.
Henrique, F.L.
Pereira, A.M.F.
Editors: Vasconcellos, S.A.
Keywords: heat stress
Issue Date: 19-Jan-2015
Publisher: Vet-USP
Citation: Chiquitelli Neto, M., Titto, C.G., Titto, E.A., Costa e Silva, E.V., Puoli Filho, J.N.P., Pereira, A.M.F., Leme, T.M.C., Henrique, F.L. (2015). Effect of artificial shading on performance and reproductive parameters of semi-confined young Brangus bulls (2015) Brazilian Journal of Veterinary Research and Animal Science, v. 52, 1, p. 68-74.
Abstract: Thirty Brangus bulls were used in a 90-d study to assess the effect of artificial shading on the performance and reproductive characteristics of semi-confined cattle. Animals were kept in four one-ha paddocks in two groups of eight for shade treatment (5 m²/animal of 80% solar block shade cloth) and two groups of seven animals in no-shade treatment. Each treatment had two homogeneous groups, each divided into heavy-bulls (351-450 kg) and light-bulls (300-350 kg). Time spent under shade, time standing, average daily gain, testicular development and sperm quality were investigated. Animals spent 24% of the daylight under the shade and no-shaded bulls spent more time standing (P < 0.05). No difference was found in average daily gain (P > 0.05) and testicular development between shaded and no-shaded animals. However, scrotal perimeter was higher for shaded light animals compared to no-shaded light bulls (P < 0.10). Sperm motility increase during the experimental period for shaded animals (P < 0.05) and sperm abnormalities were higher for the shaded ones (P < 0.05). Although the results did not indicate pronounced benefits on cattle performance, this resource was an important alternative because it appears to provide an improvement in some reproductive parameters and ensure a better thermal comfort to the animals.
Type: article
Appears in Collections:MED - Publicações - Artigos em Revistas Internacionais Com Arbitragem Científica

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