2010
DOI: 10.1590/s0103-84782010000200023
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Ractopamina em dietas para suínos machos imunocastrados, castrados e fêmeas

Abstract: IINíveis de ractopamina para suínos machos castrados em terminação e mantidos sob conforto térmico Ractopamine levels to finishing barrows maintained on thermoneutral environment

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Cited by 4 publications
(7 citation statements)
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References 11 publications
(16 reference statements)
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“…Previous studies demonstrated that male pigs castrated either via immunisation or surgery have higher daily feed intake, higher daily weight gain and worse feed conversion when compared to females, which was attributed to lower levels of serum androgens (MORAES et al, 2010;SILVA et al, 2012). However, this higher feed intake is not only related to a higher body weight but also to increased lipid deposition, where demand for nutrients is greater, which justifies the inferior feed conversion observed for males versus females (BERTOL et al, 2013;CALDARA et al, 2013).…”
Section: Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…Previous studies demonstrated that male pigs castrated either via immunisation or surgery have higher daily feed intake, higher daily weight gain and worse feed conversion when compared to females, which was attributed to lower levels of serum androgens (MORAES et al, 2010;SILVA et al, 2012). However, this higher feed intake is not only related to a higher body weight but also to increased lipid deposition, where demand for nutrients is greater, which justifies the inferior feed conversion observed for males versus females (BERTOL et al, 2013;CALDARA et al, 2013).…”
Section: Resultsmentioning
confidence: 99%
“…According to Moraes et al (2010), sex can influence carcass development because, when assessing males and females in the growth phase, subject to the same nutrition and weighing similarly at slaughter, females tend to have higher protein deposition and smaller lipid deposition compared to males. Accordingly, Silva et al (2015) observed that females reached larger depth values in the sirloin and ribeye areas and had more lean meat in relation to barrows, which corroborates the results presented in this paper.…”
Section: Resultsmentioning
confidence: 99%
“…O resultado obtido para o consumo de ração é corroborado por vários estudos com ractopamina (DUNSHEA et al, 1993a;MARINHO et al, 2007;MORAES et al, 2010;SANCHES et al, 2010a, b), nos quais não foram observados efeitos sobre essa variável. Os resultados nos estudos citados podem ser um indicativo de que a ractopamina não apresenta ação específica sobre o controle voluntário da ingestão de alimento nos suínos.…”
Section: Resultsunclassified
“…Em ensaios desenvolvidos por Moraes et al (2010), foi constatado que a inclusão de 10 ppm de ractopamina na dieta melhora a conversão alimentar dos suínos, independentemente do sexo. A inclusão de ractopamina na dieta pode prejudicar o ganho de peso dos machos imunocastrados e aumentar o ganho de peso dos machos castrados e das fêmeas, porém sem afetar as características quantitativas de carcaça dos suínos.…”
Section: Ractopaminaunclassified