Nutrient requirements of energy and protein for Holstein × Zebu bulls finished in feedlot.

@article{Rotta2013NutrientRO,
  title={Nutrient requirements of energy and protein for Holstein × Zebu bulls finished in feedlot.},
  author={P. Rotta and S. Filho and E. Detmann and Luiz Fernando Costa e Silva and F. Villadiego and Eusebio Manuel Galindo Burgos and F.A.S. Silva},
  journal={Semina-ciencias Agrarias},
  year={2013},
  volume={34},
  pages={2523-2534}
}
Objetivou-se com este estudo estimar as exigencias nutricionais de energia e proteina em bovinos cruzados (Holandes × Zebu). Um experimento de abate comparativo foi conduzido com 44 (24 meses) bovinos cruzados pesando 338± 39 kg. Os bovinos foram aleatoriamente separados como segue: quatro bovinos para o grupo referencia, quatro bovinos para o grupo mantenca e 36 bovinos alimentados ad libitum . Foram uilizadas a silagem de milho (SM) e a cana-de-acucar in natura (CA) nas proporcoes de 60 ou 40… Expand

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References

SHOWING 1-10 OF 16 REFERENCES
Exigências nutricionais, validação de equações para a estimação da composição do corpo vazio e uso da creatinina para estimar a proporção de tecido muscular em bovinos Nelore
The aims of this study were evaluate the intake of dry matter (DMI) and their nutrients, average daily gain (ADG), nutrients digestibility and microbial efficiency and understand the growthExpand
Avaliação dos teores de fibra em detergente neutro em forragens, concentrados e fezes bovinas moídas em diferentes tamanhos e em sacos de diferentes tecidos
Two experiments were carried out to evaluate the effects of particles sizes on contents of neutral detergent fiber (NDF) by using nylon bags F57 (Ankom®) and non-woven textile (NWT 100 g/m2). In theExpand
A meta-analysis of energy and protein requirements for maintenance and growth of Nellore cattle.
TLDR
The results do not support the hypothesis that bulls have greater NE(m) requirements than steers and heifers, and no significant differences in the NP(m), NE(g), and net protein for maintenance (NP(m)) and growth ( NP(g) requirements were detected. Expand
Energy requirement for maintenance and growth of Nellore bulls and steers fed high-forage diets.
TLDR
Data from three comparative slaughter experiments with individually fed Nellore bulls and steers were utilized to determine their NEm and NEg requirements when fed high-forage diets, indicating that bulls had a greater ME requirement for maintenance than steers. Expand
ASAS centennial paper: net energy systems for beef cattle--concepts, application, and future models.
TLDR
Development of a series of models has been described to show examples of the conceptual evolution of dynamic, mechanistic models and their applications and generally with each new system, advances in prediction accuracy came about by adding new terms to conceptually validated models. Expand
A decision support system to improve individual cattle management. 1. A mechanistic, dynamic model for animal growth
Abstract A deterministic and mechanistic growth model was developed to dynamically predict growth rate, accumulated weight, days required to reach target body composition, carcass weight (CW) andExpand
Exigências nutricionais de zebuínos e tabelas de composição de alimentos - BR CORTE
  • Viçosa : UFV, Suprema Gráfica Ltda,
  • 2006
Desempenho produtivo e exigências nutricionais de fêmeas Nelore em crescimento .
  • Estimation of the composition of beef carcasses and cuts
  • 2010
...
1
2
...