Exigências de energia de bovinos de corte em pastejo

Moraes, Eduardo Henrique Bevitori Kling de; Paulino, Mário Fonseca; Moraes, Kamila Andreatta Kling de; Figueiredo, Darcilene Maria de; Filho, Sebastião de Campos Valadares; Paulino, Pedro Veiga Rodrigues; Couto, Victor Rezende Moreira

doi:10.1590/s1516-35982009000500021

Cited by 11 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The value of NEm of this experiment was 3.36% higher than the value of 69.33 kcal/kg EBW 0.75 found by Moraes et al (2009). Valadares Filho et al (2006c suggested a requirement of net energy for maintenance of Zebu animals in Brazil of 78.5 kcal/EBW 0.75 , a value 9.5% higher than that found in this study.…”

Section: Resultscontrasting

confidence: 80%

“…When comparing the ratios obtained in this study with those used with grazing animals, data from this study are numerically superior to those found by Zervoudakis et al (2002), Fregadolli (2005) and Moraes et al (2009), who reported values of 0.8575; 0.8746 and 0.8877, respectively, although close to the value of 0.8997 found by Sales (2008), who carried out experiments in conditions similar to this research.…”

Section: Resultssupporting

confidence: 54%

“…CSIRO (2007) has recommended that the maintenance requirements for beef cattle raised on pasture be from 10 to 50%, and in function of the distance traveled, the availability of pasture and slope of the terrain. Some studies on nutritional requirements for cattle raised on pasture (Zervoudakis et al, 2002;Fregadolli, 2005;Moraes et al 2009;Paixão, 2008;Sales et al 2010;Sales et al, 2011) have been developed in Brazil, but the amount of information available is still considered small for the development of equations that are considered as reliable for use in diet formulation programs, especially regarding the supplementation of these animals.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Nutritional requirements of energy, protein and macrominerals for maintenance and weight gain of young crossbred Nellore × Holstein bulls on pasture

et al. 2012

Self Cite

View full text Add to dashboard Cite

-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.X b-1 , in which a and b represent the intercept and the coefficient of equation of prediction of macrominerals in body content, respectively.Requirements of metabolizable energy for maintenance (MEm) were obtained from retained energy in function of metabolizable energy intake (MEI). The requirements of MEm of Nellore/Holstein crossbreds young bulls on pasture was 125 kcal/EBW 0.75 /day. The efficiency of ME utilization for maintenance (k m ) of grazing Nellore/Holstein crossbred young bulls was 0.58 and 0.24 for gain. The total metabolizable protein requirements for an animal with 400 kg and with average daily gain of 1.0 kg, were 638.36 g/day. The dietetic requirements of Ca and P for an animal with 400 kg BW were 0.49 and 0.21% of DM, respectively. Daily metabolizable energy requirement for maintenance of grazing Nellore/Holstein crossbred young bulls was 11.6% greater than the values found for cattle in feedlot in Brazil (112 kcal/kg EBW 0.75 ).

show abstract

Section: Resultscontrasting

confidence: 80%

Section: Resultssupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Nutritional requirements of energy, protein and macrominerals for maintenance and weight gain of young crossbred Nellore × Holstein bulls on pasture

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…Recentemente, trabalhos foram realizados buscando-se avaliar as necessidades nutricionais de zebuínos recriados e terminados a pasto (MORAES et al, 2009(MORAES et al, e 2010SALES et al, 2009 e 2010), condição de criação que predomina no Brasil.…”

Section: Desenvolvimentounclassified

Utilização de energia para crescimento e sua influência na composição corporal de bovinos de corte

Fernandes¹,

Rossi²,

Stieven³

et al. 2011

Pubvet

View full text Add to dashboard Cite

“…A atividade de pastejar pode aumentar os requerimentos de energia de bovinos criados a pasto em comparação aos confinados (Moraes et al 2009). A energia é considerada fator limitante à vida e às funções produtivas e, portanto, sua determinação nos alimentos é de extrema importância para o perfeito atendimento das necessidades nutricionais (Cabral et al 2006).…”

Section: Introductionunclassified

Gasto energético de bovinos en régimen de pastoreo: Métodos experimentales y factores determinantes

Machado¹,

Negrão²,

Zanine³

et al. 2018

Pubvet

View full text Add to dashboard Cite

RESUMO.Em se tratando da bovinocultura brasileira, o sistema de criação predominante na maioria do país é o sistema de criação a pasto, caracterizado pelas vastas extensões de terras disponíveis e clima tropical que favorece o crescimento de gramíneas adaptadas. Uma característica notável desse sistema de criação é a sazonalidade na produção de forragem que é abundante no período chuvoso e escassa no período seco; tal situação compromete o desempenho dos índices zootécnicos dos animais e acarreta perdas na produtividade dos mesmos. Na cadeia produtiva animal, a energia é um fator de destaque na produção, sendo essencial para sustentar todos os processos vitais e metabólicos do corpo, entre outras funções. É necessário observar que animais criados a pasto possuem maior gasto energético, pois se movimentam mais em busca de alimento. Assim, objetivou-se elencar os métodos de determinação de gasto energético e demonstrar a importância da adoção de um manejo alimentar adequado.Palavras chave: energia, metabolismo energético, nutrição animal Energy expenditure of grazing cattle: Experimental methods and determinantsABSTRACT. In the case of Brazilian cattle breeding, the principal breeding system in most of the country is the grazing system, characterized by vast tracts of land available and a tropical climate that favors the growth of adapted grasses. A notable feature of this breeding system is the seasonality of forage production that is abundant in the rainy season and scarce in the dry season; this situation compromises the performance of the performance indexes of the animals and causes losses in their productivity. In the animal production chain, energy is a prominent factor in production, being essential to sustain all vital and metabolic processes of the body, among other functions. It is necessary to observe that animals raised in pasture have greater energy expenditure, since they move more in search of food. Thus, the objective was to list methods of energy expenditure determination and to demonstrate the importance of adopting an adequate food management.

show abstract

Exigências de energia de bovinos de corte em pastejo

Cited by 11 publications

References 13 publications

Nutritional requirements of energy, protein and macrominerals for maintenance and weight gain of young crossbred Nellore × Holstein bulls on pasture

Nutritional requirements of energy, protein and macrominerals for maintenance and weight gain of young crossbred Nellore × Holstein bulls on pasture

Utilização de energia para crescimento e sua influência na composição corporal de bovinos de corte

Gasto energético de bovinos en régimen de pastoreo: Métodos experimentales y factores determinantes

Contact Info

Product

Resources

About