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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

Suplementação com biotina no crescimento do casco e no metabolismo energético de bezerras / Biotin supplementation in claw horn growth and energetic metabolism of heifers

Queiroz, Paulo José Bastos 03 March 2017 (has links)
Submitted by Luciana Ferreira (lucgeral@gmail.com) on 2017-05-19T11:21:17Z No. of bitstreams: 2 Dissertação - Paulo José Bastos Queiroz - 2017.pdf: 7098646 bytes, checksum: d2f8a9a58fce5432a3503fe70e6654f7 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Approved for entry into archive by Luciana Ferreira (lucgeral@gmail.com) on 2017-05-19T11:29:55Z (GMT) No. of bitstreams: 2 Dissertação - Paulo José Bastos Queiroz - 2017.pdf: 7098646 bytes, checksum: d2f8a9a58fce5432a3503fe70e6654f7 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) / Made available in DSpace on 2017-05-19T11:29:55Z (GMT). No. of bitstreams: 2 Dissertação - Paulo José Bastos Queiroz - 2017.pdf: 7098646 bytes, checksum: d2f8a9a58fce5432a3503fe70e6654f7 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5) Previous issue date: 2017-03-03 / This study aimed to evaluate the effect of biotin supplementation on dorsal hoof wall growth and wear, and on daily weight gain of crossbred heifers (Jersey x Holstein). In addition, the objective was to evaluate the effect of biotin supplementation on the lipidogram, serum fructosamine and plasma glucose and lactate concentration in these animals. Twelve crossbred heifers (Jersey x Holstein), six months old and weighted mean of 124.08 ± 16.57 were used. The heifers were divided into Control Group and Biotin Group, containing six animals in each group. Biotin group animals received a daily dose of 20 mg biotin for 120 days. Hoof and biochemical measurements were evaluated every 30 days. The total wear on the dorsal hoof wall in the thoracic limb of the Control Group was higher (p <0.05) than the observed in the Biotin Group during the 120 days of evaluation. The total net growth of the dorsal hoof wall in the thoracic limb was greater (p <0.05) in Biotin Group. In the pelvic limb, there were no statistical differences between the groups. In relation to biochemical parameters, it was observed that biotin supplementation did not cause statistical difference in any biochemical parameters evaluated. The daily supplementation with 20 mg of biotin for 120 days is capable of reducing the wear rate and, consequently, increasing the net growth of the dorsal hoof wall in crossbred heifers (Jersey x Holstein). However, it does not interfere with the blood glucose, fructosamine, lactate and lipids concentration on these animals. / Este estudo objetivou avaliar o efeito da suplementação com biotina no crescimento e desgaste da muralha dorsal do casco e no ganho de peso diário de bezerras mestiças. Objetivou-se também avaliar o efeito da suplementação dessa vitamina no lipidograma, na frutosamina sérica e na concentração plasmática de glicose e lactato desses mesmos animais. Foram utilizadas 12 bezerras, mestiças (Jersey X Holandês), seis meses de idade e peso médio de 124,08 ± 16,57. As bezerras foram divididas em Grupo Controle e Grupo Biotina, contendo seis animais em cada grupo. Os animais do Grupo Biotina receberam uma dose diária de 20 mg de biotina durante 120 dias. As medições do casco e as avaliações bioquímicas foram realizadas a cada 30 dias. O desgaste total da muralha dorsal no membro torácico do Grupo Controle foi maior (p<0,05) do que o observado no Grupo Biotina para os 120 dias de avaliação. O crescimento líquido total da muralha dorsal do membro torácico foi maior (p<0,05) no Grupo Biotina. No membro pélvico, não houve diferenças estatística (p<0,05) entre os grupos. Quantos aos parâmetros bioquímicos, observou-se que a suplementação com biotina não ocasionou diferença estatística em nenhum dos parâmetros avaliados. A suplementação diária com 20 mg de biotina durante 120 dias é capaz de promover redução da taxa de desgaste e, consequentemente, aumento do crescimento líquido da muralha dorsal do casco de bezerras mestiças (Jersey x Holandês). Entretanto, não interfere na concentração sanguínea de glicose, frutosamina, lactato e lipídios destes mesmos animais._

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