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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...
Levels of multiple supplements or nitrogen salt for beef heifers in pasture dur...
Valente,Ériton Egidio Lisboa; Paulino,Mário Fonseca; Detmann,Edenio; Campos Valadares Filho,Sebastião de; Barros,Lívia Vieira de; Acedo,Tiago SabellaThe study assessed performance, microbial protein synthesis, intake and digestibility of nutrients by beef heifers receiving levels of multiple supplements or nitrogen salt, in a self-controlled intake, on pasture, during the dry season. Thirty-five beef heifers, from 6 to 9 months of age and average initial body weight of 203.4 + 4.5 kg, were used. Study factors were: control - mineral mixture; nitrogen salt -...
Energy sources and supplementation levels for beef heifers raised during the dr...
Couto,Victor Rezende Moreira; Paulino,Mário Fonseca; Detmann,Edenio; Valadares Filho,Sebastião de Campos; Sales,Maykel Franklin LimaThis experiment aimed at evaluating the productive performance, intake and the apparent digestibility in the raising of beef heifers on Brachiaria decumbens Stapf. pastures under supplementation with starch or fibrous energy sources during the dry season. It was used 40 newly weaned heifers (20 Nellore and 20 crossbreed), at 8.5 months of age and 197.9 ± 3.74 kg initial weight. Two supplements were formulated: ...