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Metabolizable Protein: 1. Predicting Equations to Estimate Microbial Crude Prot...

Santos, Stefanie Alvarenga; de Carvalho, Gleidson Giordano Pinto; Azevêdo, José Augusto Gomes; Zanetti, Diego; Santos, Edson Mauro

Made available in DSpace on 2022-04-28T19:40:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-06-10; Instituto Nacional de Ciência e Tecnologia de Ciência Animal; Microbial crude protein (MCP) produced in rumen could be estimated by a variety of protocols of experimental sampling and analysis. However, a model to estimate this value is necessary when protein requirements are calculated for small rumina...

Date: 2022   |   Origin: Oasisbr

Effect of feeding strategies on weaning weight and milk production of Holstein ...

Menezes, Gustavo Chamon de Castro de; Valadares Filho, Sebastião de campos; Detmann, Edenio; Zanetti, Diego; Mariz, Lays Débora Silva

The objective of this study was to evaluate the effect of five feeding strategies on calf weaning weight, and cow milk production and composition in Brazilian Holstein × Zebu cows. A total of 60 cows and their calves were allocated to each of five treatments. Cows in treatments 1, 2 and 3 were milked for 270 days and cows in treatments 4 and 5 were milked for 180 days. Calves in treatment 1 (CON) were not suppl...

Date: 2019   |   Origin: Oasisbr

Meat production in a feedlot system of Zebu—Holstein steers and heifers with da...

Menezes, Gustavo Chamon de Castro; Valadares Filho, Sebastião de Campos; Ruas, José Reinaldo Mendes; Detmann, Edenio; Menezes, Arismar de Castro

The aim of this study was to evaluate the productive and biological efficiency of steers and heifers from dairy genetics in a feedlot system in terms of meat production. Twenty-four steers and 24 heifers at 10 monthes of age, (3/4) Zebu × (1/4) Holstein were utilized. They were distributed over four feedlot times, 30, 60, 90, and 120 days with four replications for each sex, and were slaughtered at the end of e...

Date: 2019   |   Origin: Oasisbr

Effect of phase-feeding crude protein on performance and carcass characteristic...

Amaral, Paloma de Melo; Valadares Filh, Sebastião de Campos; Detmann, Edenio; Santos, Stefanie Alvarenga; Prados, Laura Franco; Mariz, Lays Débora Silva

Beef cattle (24) with an average initial body weight of 417 ± 54 kg were assigned in a 2 × 2 factorial design with six repetitions. The factors studied were two levels of CP: 11 (low CP) or 13 % (high CP) in the initial feedlot phase (days 1–36) and in the final phase (days 37–72). After 36 days, half of the bulls fed with each level of CP were selected to reverse the CP level. No interaction was observed (P > ...

Date: 2018   |   Origin: Oasisbr

Creatinine as a metabolic marker to estimate urinary volume in growing goats

Valadares Filho, Sebastião de Campos; Santos, Stefanie Alvarenga; Prates, Luciana Louzada; Carvalho, Gleidson Giordano Pinto de

The objectives of this study were to: (1) quantify the relationship between fasting body weight (FBW, kg) and urinary creatinine excretion (UCE, mg/d) in Boer goats; (2) evaluate the urinary volume estimates obtained from creatinine concentrations in the spot samples collected at different time points; (3) compare them with the 24-h observed urine volume. Thirty growing Boer goats (18 ± 2.2 kg initial BW) were ...

Date: 2018   |   Origin: Oasisbr

Intake, digestibility and nitrogen use efficiency in crossbred F1 Holstein × Ze...

Santos, Stefanie Alvarenga; Valadares Filho, Sebastião de Campos; Detmann, Edenio; Valadares, Rilene Ferreira Diniz; Ruas, José Reinaldo Mendes

The objective of this study was to evaluate intake, digestibility and nitrogen (N) compounds use efficiency in F1 Holstein × Zebu grazing cows. Eighteen crossbred cows (six Holstein × Gir, six Holstein × Guzerat, and six Holstein × Nellore) were used in the experiment, constituting three experimental treatments in simple random samples, under the same feeding conditions. At the estimation of individual intake a...

Date: 2017   |   Origin: Oasisbr

Digestibilidade intestinal dos aminoácidos e utilização de 15N e bases purinas ...

Mariz, Lays Débora Silva

Conselho Nacional de Desenvolvimento Científico e Tecnológico; O objetivo desse estudo foi avaliar o efeito dos grupos genéticos e níveis dietéticos de proteína bruta (PB) sobre o consumo, os locais de digestão dos constituintes da dieta, a excreção dos compostos nitrogenados e a absorção de aminoácidos no intestino delgado de bovinos de corte. Objetivou-se também, quantificar a síntese de PB microbiana utiliza...

Date: 2016   |   Origin: Oasisbr

Desempenho, produção de metano entérico e avaliação de locais para estimação da...

Mariz, Lays Débora Silva

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior; The present work was developed starting from three experiments described in two chapters. In chapter one, the first experiment, aimed on evaluate the fermentative profile of sugarcane silage treated or not with calcium oxide, the experiment two, evaluate intake, the apparent digestibility and the performance of cattle fed on to different diets constit...

Date: 2015   |   Origin: Oasisbr

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