Requirement of energy and protein of beef cattle on tropical pasture

Vista sencilla de ítem
dc.creatorEriton Egidio Lisboa Valente
dc.creatorMário Fonseca Paulino
dc.creatorEdenio Detmann
dc.creatorSebastião de Campos Valadares Filho
dc.creatorJavier Enrique Garces Cardenas
dc.creatorIsabela Fernanda Teixeira Dias
dc.date2013
dc.date.accessioned2026-07-07T03:58:30Z
dc.descriptionProtein and energy requirements of beef cattle, aged between 4 and 18 months old, on tropical pastures, were estimated. Forty-six Ne llore calves (138.3 ± 3.4 kg BW and 90-150 days old), kept on pasture, were distributed in a maintenance group (restricted feeding) or in nutritional plans, receiving a supplements with different amounts of protein and carbohydrate or non-supplemented. The net energy requirement for weight gain (NE g ) was obtained by linear regression of logarithm of retained energy as a function of logarithm of empty body weight gain. The net energy requirement for maintenance (NE m ) was estimated by the exponential relation between heat production and metabolizable energy intake. Net protein requirement for weight gain (RP) was estimated by multiple linear regression of retained protein in the weight gain of empty body (EBWG) and retained energy. The efficiency of metabolizable energy (ME) used for maintenance and for weight gain was 0.55 and 0.26, respectively. The ME requirement for maintenance was 124 kcal EBW -0.75 . RP decreased in proportion to body weight increase. NE g and RP may be obtained by equations: RE (Mcal kg -1 ) = 0.044 x EBW 0.75 x EBWG 1.1302 and RP (g day -1 ) = -31.45 + 229.69 x EBWG – 8.75 x RE, respectively.
dc.formatapplication/pdf
dc.identifier1806-2636
dc.identifierhttps://www.redalyc.org/articulo.oa?id=303128707011
dc.identifier.urihttp://hdl.handle.net/123456789/449178
dc.languageen
dc.publisherUniversidade Estadual de Maringá
dc.relationhttp://www.redalyc.org/revista.oa?id=3031
dc.rightsActa Scientiarum. Animal Sciences
dc.sourceActa Scientiarum. Animal Sciences (Brasil) Num.4 Vol.35
dc.subjectAgrociencias
dc.titleRequirement of energy and protein of beef cattle on tropical pasture
dc.typeartículo científico

Archivos

Colecciones

Acta Scientiarum. Animal Sciences - Universidade Estadual de Maringá