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Nutritional performance of cattle grazing on low-quality tropical forage supple...
Lazzarini,Ísis; Detmann,Edenio; Paulino,Mário Fonseca; Valadares Filho,Sebastião de Campos; Valadares,Rilene Ferreira Diniz; Oliveira,Fabrício AlbaniThe objective of this work was to evaluate the effects of protein and/or starch supplementation on the nutritional performance of cattle grazing on low-quality tropical forage. Five crossbred steers (Holstein × Gyr) with an average body weight (BW) of 397 kg that were fitted with ruminal and abomasal cannulae were used. The animals were kept in individual signal-grass (Bracharia decumbens) paddocks. Five treatm...
Uso de técnicas de regressão na avaliação, em bovinos de corte, da eficiência d...
Detmann,Edenio; Valadares Filho,Sebastião de Campos; Gionbelli,Mateus Pies; Paulino,Pedro Veiga Rodrigues; Paulino,Mário FonsecaObjetivou-se neste estudo propor e discutir um método de avaliação comparativa da eficiência de conversão do alimento em produto entre dois grupos experimentais de bovinos de corte baseado na utilização de técnicas de regressão. Os procedimentos matemáticos e estatísticos foram desenvolvidos a partir de banco de dados formado pela mensuração do consumo de matéria seca e do ganho médio diário em 380 bovinos zebu...
Chemical composition and fermentative losses of sugar cane ensilage with differ...
Magalhães,Felipe Antunes; Valadares Filho,Sebastião de Campos; Menezes,Gustavo Chamon de Castro; Machado,Marcelo Grossi; Zanetti,DiegoThe objective of this study was to evaluate the effect of sugar cane ensilage with different Brix degrees, with or without the addition of 0.5% of calcium oxide (lime) on the chemical composition and fermentation losses of silages. A complete random design in a 9 × 2 factorial arrangement was used. Experimental silos were used, ensilage was done every 15 days with Brix measuring, and they were opened after 30 d...
Evaluation of mathematical models to describe growth of grazing young bulls
Fernandes,Henrique Jorge; Tedeschi,Luis Orlindo; Paulino,Mário Fonseca; Detmann,Edenio; Paiva,Luisa Melville; Valadares Filho,Sebastião de CamposThe objective of this study was to evaluate the use of different mathematical models to describe growth of grazing beef cattle. Data of 20 Nellore bulls with initial weight of 129±28.1 kg and final weight of 405±62.0 kg were used. The animals were randomly divided into four plots and placed on B. decumbens Stapf pastures. Three plots received concentrate supplement with different protein profiles and the fourth...
Avaliação nutricional, durante a amamentação, de tourinhos em pastejo recebendo...
Fernandes,Henrique Jorge; Paulino,Mário Fonseca; Detmann,Edenio; Valadares Filho,Sebastião de Campos; Silva,Aline Gomes da; Porto,Marlos OliveiraO objetivo neste estudo foi avaliar as condições nutricionais de tourinhos em aleitamento, a pasto, recebendo suplementação com concentrados proteicos durante a época de transição águas-seca. Foram utilizados 52 bezerros mestiços com idade média inicial de 130 dias. Os animais foram distribuídos em quatro lotes, alojados em piquetes de Brachiaria decumbens Stapf junto com suas mães, onde receberam uma das quatr...
Macro mineral requirements by grazing zebu bovines
Moraes,Eduardo Henrique Bevitori Kling de; Paulino,Mário Fonseca; Moraes,Kamila Andreatta Kling de; Valadares Filho,Sebastião de Campos; Lazzarini,IsisThe objective of this study was to determine requirements of calcium (Ca), phosphorus (P), magnesium (Mg), potassium (K) and sodium (Na) for grazing zebu bovines. The experiment area was composed of Brachiaria decumbens paddocks. Twenty-seven non-castrated animals, with initial live weight of 311.0 kg and at an average age of 14 months were used. Three animals were slaughtered, after adaptation period, so they ...
Net requirements of energy, protein and macrominerals for weight gain of grazin...
Rocha,Anilza Andréia da; Paulino,Mário Fonseca; Fernandes,Henrique Jorge; Barros,Lívia Vieira de; Lopes,Sidnei Antonio; Galon,LeandroThe objective of this experiment was to estimate the requirements of energy, protein and macrominerals of grazing crossbreds calves, in Brachiaria decumbens Stapf pasture, castrated at different ages, with and without supplementation. Forty-seven young calves at initial age of 120±30.1 days and 115.3±1.97 kg of live weight were used. To estimate net energy requirements for weight gain, a regression equation bet...
In vitro and in situ activity of carboxymethyl cellulase and glutamate dehydrog...
Carvalho,Isabela Pena Carvalho de; Detmann,Edenio; Paulino,Mário Fonseca; Mantovani,Hilário Cuquetto; Valadares Filho,Sebastião de CamposTwo experiments were carried out to evaluate the effect of supplementation with different nitrogenous compounds on the activities of carboxymethil cellulase (CMCase) and glutamate dehydrogenase (GDH). In the first experiment, four treatments were evaluated in vitro: cellulose, cellulose with casein, cellulose with urea, and cellulose with casamino acids. After 6, 12 and 24 hours of incubation, CMCase and GDH ac...
Nutritional requirements of energy, protein and macrominerals for maintenance a...
Porto,Marlos Oliveira; Paulino,Mário Fonseca; Valadares Filho,Sebastião de Campos; Detmann,Edenio; Cavali,Jucilene; Sales,Maykel Franklin LimaThe objective of this study was to estimate requirements of energy, protein and macrominerals of young Nellore/Holstein crossbreds bulls supplemented on pastures of Brachiaria decumbens Stapf. Thirty-five young bulls, at 8.53±0.18 months of age and with initial body weight of 230.6±6.1 kg were used. Ten animals were slaughtered as reference, in different weight range, and the other animals were slaughtered at t...
Performance and nutritional evaluation of beef cattle raised on pasture, castra...
Rocha,Anilza Andréia da; Paulino,Mário Fonseca; Fernandes,Henrique Jorge; Barros,Lívia Vieira de; Lopes,Sidnei Antonio; Galon,LeandroThe objective of this study was to evaluate performance and nutritional traits of beef cattle raised on pastures, castrated at different ages, with and without supplementation. Forty-four crossbred young bulls with predominance of Zebu breed at initial average age of 120±30 days were used in the experiment. Animals were distributed in a completely randomized design in a factorial arrangement with four ages of c...