10 documents found, page 1 of 1
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 MauroMade 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...
Enteric methane mitigation strategies for ruminant livestock systems in the Lat...
Congio, Guilhermo Francklin de Souza; Bannink, André; Mayorga Mogollón, Olga Lucía; Jaurena, Gustavo; Gonda, Horacio; Gere, José IgnacioMade available in DSpace on 2021-06-25T11:02:06Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-08-20; AgResearch; New Zealand Government; Latin America and Caribbean (LAC) is a developing region characterized for its importance for global food security, producing 23 and 11% of the global beef and milk production, respectively. The region's ruminant livestock sector however, is under scrutiny on environm...
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 SilvaThe 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...
Performance, growth, and maturity of Nellore bulls
Silva, Luiz Fernando Costa e; Valadares Filho, Sebastião de Campos; Detmann, Edenio; Rotta, Polyana Pizzi; Zanetti, DiegoThe objectives of this study were to evaluate the dry matter intake (DMI), digestibility, average daily gain (ADG), microbial efficiency, empty body weight (EBW) gain, and body composition of Nellore bulls. Additionally, Nellore bull maturity was estimated, and the prediction equation for DMI, suggested by the Brazilian nutrient requirements system (BR CORTE; Azevêdo et al. 2010), was evaluated. Thirty-three Ne...
Energy and protein nutritional requirements for Nellore bulls
Silva, Luiz Fernando Costa e; Valadares Filho, Sebastião de Campos; Zanetti, Diego; Rotta, Polyana Pizzi; Marcondes, Marcos Inácio; Prados, Laura FrancoThe objective of this study was to determine the nutritional requirements of energy and protein and estimate the efficiencies of metabolizable energy utilization for fat and protein deposition, as well as for maintenance (km) and growth (kg). An experiment of comparative slaughter was carried out with thirty-seven 14-month-old (±1 month) Nellore bulls with 259±24.9 kg. Animals were divided as follows: five to r...
Creatinine excretion and relationship with body weight of Nellore cattle
Silva, Luiz Fernando Costa e; Valadares Filho, Sebastião de Campos; Chizzotti, Mário Luiz; Rotta, Polyana Pizzi; Prados, Laura FrancoThe objective of this study was to estimate the urinary creatinine excretion by the shrunk body weight (SBW). In experiment I, 32 Nellore bulls with initial body weight of 259±24.9 kg and 14±1 months-old were used. The group was divided in four animals to maintenance and twenty eight animals feeding ad libitum and separated in four groups; each group was slaughtered at different times of feedlot (42, 84, 126 an...
Mineral release from different feeds, mineral balance for Nellore bulls, and wa...
Zanetti, DiegoConselho Nacional de Desenvolvimento Científico e Tecnológico; Para esta tese foram preparados quatro artigos científicos baseados em estudos de liberação de minerais de alimentos para ruminantes, absorção, metabolismo e equilíbrio de minerais para bovinos de corte, e ingestão de água de bovinos de corte. No primeiro artigo, o objetivo foi quantificar a digestibilidade da matéria seca (MS) e a disponibilidade d...
Intake and performance of feedlot cattle fed diets based on high and low brix s...
Magalhães, Felipe Antunes; Valadares Filho, Sebastião de Campos; Menezes, Gustavo Chamon de Castro; Gionbelli, Mateus Pies; Zanetti, DiegoThe objective of this study was to evaluate low and high Brix diets, treated or not with 5 g of calcium oxide per kg of natural matter, and corn silage on intake, digestibility and performance of beef cattle. Forty cattle with initial body weight (BW) of 350 kg were used: five composed the control group, 30 were distributed into random blocks (control) and the other five were distributed in a 5 × 5 incomplete L...
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...
Exigências nutricionais, frequência de alimentação e níveis de cálcio e fósforo...
Zanetti, DiegoConselho Nacional de Desenvolvimento Científico e Tecnológico; This work was developed in order to evaluate the feed intake, digestibility and performance of crossbred cattle fed in confinement at different frequencies with diets containing different levels of calcium and phosphorus; determine the nutritional requirements of energy, protein and macro minerals; and evaluate the effects on consumption estimates w...