Effect of phase-feeding crude protein on performance and carcass characteristics of crossbred beef bulls: an application to reduce nitrogen compounds in beef cattle diets

@article{Amaral2013EffectOP,
  title={Effect of phase-feeding crude protein on performance and carcass characteristics of crossbred beef bulls: an application to reduce nitrogen compounds in beef cattle diets},
  author={Paloma Melo Amaral and Sebasti{\~a}o Campos Valadares Filho and Edenio Detmann and Stefanie Alvarenga Santos and Laura Franco Prados and Lays D{\'e}bora Silva Mariz and Lyvian Cardoso Alves and Ana Clara Bai{\~a}o Menezes and Faider Alberto Casta{\~n}o Villadiego and Marco Aur{\'e}lio Schiavo Novaes and Fl{\'a}via Adriane Sales Silva},
  journal={Tropical Animal Health and Production},
  year={2013},
  volume={46},
  pages={419-425}
}
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 > 0.05) between the level of protein in the initial and final phases on the intake of… CONTINUE READING
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