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Batistel F.,University of Sao Paulo | de SouzaI J.,University of Sao Paulo | Ticiani E.,Santa Catarina State University | Baldin M.,Curso de Pos graduacao em Ciencia Animal | And 3 more authors.
Ciencia Rural | Year: 2012

The objective of this study was to evaluate different herbage allowances in stargrass (Cynodon nlemfuensis Vanderyst var. nlemfuensis), on the herbage disappearance rate (HDR) and milk yield in crossbred Holstein x Gir cows. Thirty animals were assigned to three different herbage allowances (HA), ranging from 10.0, 12.5 and 15.0% BW. There was effect of HA on the HDR (P0.001). Increasing the HA in one unit had effect on the HDR increasing by 140.0kg ha-1 day-1. There was effect of leaf:stem ratio on milk yield (P0.05). The increasing in supplying herbage allowances did not resulted in increased milk yield because the management for herbage allowance and herbage growth.

Catanio F.S.,University of Northern Parana | Inay O.M.,University of Northern Parana | Da Silva A.S.,Curso de Biomedicina | Pereira J.R.,Residente em Inspecao de Leite e Derivados | And 6 more authors.
Semina:Ciencias Agrarias | Year: 2012

This study aimed to compare the microbiological and physicochemical quality of raw milk from individual and collective tanks, identify the psychrotrophic microbiota of refrigerated raw milk and verify compliance with current legislation. The enumeration of proteolytic and lipolytic psychrotrophs, as well as, populations of mesophilic aerobes, total coliforms, E. coli and enterobacteria was carried out. The psychrotrophic microbiota was characterized by morpho-tinctorial tests. Determination of fat content, protein, lactose, total solids, titratable acidity, cryoscopic index and somatic cells count (SCC) were also conducted. The average counts of mesophilic aerobes did not met the minimum quality requirements; however, the average results of SCC and the physicochemical parameters were in accordance with Brazilian legislation. The psychrotrophs counts were on average 90% of the total count of mesophilic aerobes, with psychrotrophic population of less than 6 log CFU/ml. A high percentage of proteolytic and lipolytic psychrotrophs in relation to psychrotrophs total counts was found. Considering the two weeks testing, there was a significant difference (P> 0.05) between milk samples from collective and individual tanks only for total coliforms and for protein and lactose contents. Although the predominant psychrotrophic microbiota was Gram negative bacilli, but Gram positive bacteria were also found. Thus, the population of mesophilic aerobes in disagreement with the legislation and the high counts of psychrotrophic and Gram negative population in milk are indicative that yet, there are problems in the sanitary-hygienic production, storage and transportation of refrigerated raw milk produced in the region studied. Therefore, there is a gap between the practices recommended by legislation and the actions really found in the Brazilian milk production chain.

Da Costa Araujo D.L.,UFPI | De Oliveira M.E.,Programa de Pos graduacao em Ciencia Animal | Lopes J.B.,Programa de Pos graduacao em Ciencia Animal | De Azevedo Alves A.,Programa de Pos graduacao em Ciencia Animal | And 3 more authors.
Semina:Ciencias Agrarias | Year: 2015

This study was accomplished to evaluate the behavior and performance of goats in to grazing on grass Andropogon gayanus Kunth var. Bisquamulatus (Hochst) Hack. cv. Planaltina submitted to three forage allowances: 11, 15 and 19% BW/day, under continuous grazing. The experimental design to assess the grazing behaviour was randomized blocks in a split-plot with five replicates within the block. In the plots, we evaluated the effect of forage allowances and in the subplots, the months May and June. While for evaluation of animal performance was in complete block design with five replicates within the block. The different forage allowance did not cause structural changes in the pasture, except in height. However, there was an increase of dead material, leaf/stem ratio and reducing of height during the grazing period. The behavioral variables were not affected by forage allowance, except for the time of displacement, whereby goats spent more time in pastures with offer of 11% BW. The goats remained most part of the time in grazing and idle, corresponding to 89% and 5% of the evaluation time, respectively. Higher bit rate was observed in June, among the offerings, and 15 and 19% BW. The ingestive and grazing behaviour in goats is changed by the accumulation of dead material and stem in pasture from Andropogon grass during at rainy season. The forage supply 11% of BW increases the time of displacement of goats grazing on Andropogon grass. The management of grazing Andropogon grass with forage allowance being 11 and 19% of BW provides low weight gains in goats during the rainy season.

Da Costa Araujo D.L.,Federal University of Piaui | De Oliveira M.E.,Programa de Pos graduacao em Ciencia Animal | Lopes J.B.,Programa de Pos graduacao em Ciencia Animal | Alves A.D.A.,Programa de Pos graduacao em Ciencia Animal | And 3 more authors.
Semina:Ciencias Agrarias | Year: 2015

The objective of this study was to evaluate the morphogenetic and structural characteristics and the demographic patterns of tillering in the grass Andropogon gayanus Kunth var. Bisquamulatus (Hochst) Hack. cv. Planaltina subjected to three forage allowances: 11, 15 and 19% of the LW, under continuous grazing by goats. The experimental design for the evaluation of the pasture morphogenetic characteristics was set in (two) random blocks, with six replications (tussocks) within the block. To evaluate the tillering dynamics and population density, we adopted the experimental design of (two) random blocks, in a split-plot arrangement. In the plots, we evaluated the effect of forage allowances and in the subplots, the months of April, May and June. Forage allowances did not affect the leaf elongation rate, leaf senescence or the number of live leaves. The leaf appearance rate was highest at the masses of 11 and 15% of the LW. Managing the pasture with a forage allowance of 19% of the LW increases the stem elongation rate, leaf lifespan and the lengths of leaf and stem. The number of vegetative tillers and the tiller appearance and survival rates are not affected by the forage allowances from 11 to 19% of the LW.

Vidotto V.T.,Programa de Pos graduacao em Ciencia Animal | Rocha R.T.D.,Programa de Pos graduacao em Ciencia Animal | Paiva C.L.D.,Curso de Medicina Veterinaria | Farias A.,Sao Paulo State University | Stefanes S.A.,Sao Paulo State University
Revista Brasileira de Ortopedia | Year: 2013

Objective This study aimed to evaluate morphologic changes, as well as chondroprotective and intra-articular effects of meloxicam on joint repair in rabbits induced by experimental trochleoplasty, minimizing possible adverse side effects. Methods Thirty-five rabbits were divided into four groups: the control group, which did not undergo surgery, and operated groups, which used different ways of administering the anti-inflammatory agent: systemic, 0.2 mg/kg; intra-articular, 0.5 mg/kg; positive group control, without meloxicam. Each operated group was divided according to the periods of 7 or 30 days evaluation after surgery. Results Regarding macroscopic and histological evaluation of cartilage, after 30 days, most animals showed almost complete joint repair, the presence of few or no inflammatory cells; whereas part of the animals treated with meloxicam presented necrosis in the trochlear ridge and absence of inflammatory cells after 7 days. In positive control group, it was observed moderate inflammation and connective tissue proliferation. None of the animals in the operated groups showed irregularities 30 days after surgery. Conclusion Either intra-articular or systemic, meloxicam revealed to be favorable to be used for joint repair and control of inflammatory reaction. © 2013 Sociedade Brasileira de Ortopedia e Traumatologia. Publicado por Elsevier Editora Ltda. Todos os direitos reservados.

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