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| Porto,Marlos Oliveira; Paulino,Mário Fonseca; Valadares Filho,Sebastião de Campos; Detmann,Edenio; Cavali,Jucilene; Sales,Maykel Franklin Lima; Valente,Ériton Egidio Lisboa; Couto,Victor Rezende Moreira. |
| The 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 the end of the experimental period. For estimate of net energy requirements for weight, a regression equation between log of retained energy (RE) and log of empty body weight gain (EBWG) was constructed. Net requirements of Ca, P, Mg, Na and K were determined by the equation Y' = a.b.Xb-1, in which a and b represent the intercept and the coefficient... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multiple supplements; Net energy; Supplementation; Zebu. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000300037 |
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| Couto,Victor Rezende Moreira; Paulino,Mário Fonseca; Detmann,Edenio; Valadares Filho,Sebastião de Campos; Sales,Maykel Franklin Lima; Barros,Lívia Vieira de; Porto,Marlos Oliveira; Valente,Ériton Egidio Lisboa. |
| This 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: the first was corn meal- and soybean meal-based diet (high in starch) and the second was based on wheat meal (high in fiber), which were given at the quantities of 0.5 or 1.0 kg/animal/day, compared to the offer of only mineral mixture (control). The animals were distributed according to a complete randomized block design in a 2 × 2 + 1 factorial... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria decumbens; Heifers; Pasture; Wheat meal. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010001100024 |
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| Valente,Ériton Egidio Lisboa; Paulino,Mário Fonseca; Detmann,Edenio; Campos Valadares Filho,Sebastião de; Barros,Lívia Vieira de; Acedo,Tiago Sabella; Couto,Victor Rezende Moreira; Lopes,Sidnei Antonio. |
| The 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 - 50% of urea + mineral mixture, at proportion of 1:1, and 50% of corn (75% of crude protein); levels of multiple supplementation - multiple supplements with different percentages of intake controller mixture (urea + mineral mixture, at the proportion of 1:1), corn and soybean meal (45% of crude protein). Supplement consumptions observed were: 115,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestibility; Intake; Performance; Self-control. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000900024 |
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