2010
DOI: 10.1590/s1516-35982010000100030
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Substituição da silagem de milho por silagem de girassol na dieta de novilhos em confinamento: comportamento ingestivo

Abstract: RESUMO -Estudaram-se os efeitos da substituição na dieta da silagem de milho por silagem de girassol (0, 33 e 66% MS) no comportamento ingestivo de novilhos em confinamento. Utilizaram-se nove novilhos castrados com peso vivo e idade média inicial de 288 kg e 20 meses, respectivamente, pertencentes aos grupos genéticos Nelore, 21/32Charolês (C) 11/32Nelore (N) e 21/32N 11/32C. O delineamento experimental utilizado foi o de blocos ao acaso, com três repetições por tratamento.As dietas testadas foram: 100 % de s… Show more

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Cited by 18 publications
(23 citation statements)
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References 21 publications
(17 reference statements)
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“…Missio et al (2010), studying the intake behavior of feedlot young bulls with different concentrate levels, found out that the time spent to ruminate decreased linearly (p < 0.0001) with increasing concentrate in the diet, mainly by decreased intake of neutral detergent fiber over time of STRUM of 8.75,8.65,6.76 and 5.73h, indicating preference for lying ruminating. Freitas et al (2010), evaluating the behavior of feedlot steers with several levels (0,33 and 66%) of replacement of corn silage by sunflower silage, verified no difference (p > 0.05) for the behavior LYRUM, with 7.85, 8.03, and 8.21 h day -1 .…”
Section: Resultsmentioning
confidence: 95%
See 1 more Smart Citation
“…Missio et al (2010), studying the intake behavior of feedlot young bulls with different concentrate levels, found out that the time spent to ruminate decreased linearly (p < 0.0001) with increasing concentrate in the diet, mainly by decreased intake of neutral detergent fiber over time of STRUM of 8.75,8.65,6.76 and 5.73h, indicating preference for lying ruminating. Freitas et al (2010), evaluating the behavior of feedlot steers with several levels (0,33 and 66%) of replacement of corn silage by sunflower silage, verified no difference (p > 0.05) for the behavior LYRUM, with 7.85, 8.03, and 8.21 h day -1 .…”
Section: Resultsmentioning
confidence: 95%
“…Missio et al (2010), investigating feedlot young bulls receiving various levels of concentrate (22,40,59 and 79%), verified no difference (p > 0.05) for the STIDL (2.21, 3.20, 4.17 and 3.74 h day -1 ), indicating that the activities of the animals standing were less related to levels of concentrate in the diet than other causes. However, Freitas et al (2010) detected differences (p < 0.05) for STIDL, considering animals that received 0, 33 and 66% of sunflower silage replacing corn silage, respectively, with times of 2.69, 3.48 , 3.93 h day -1 , analyzing the effect of diet on this behavior.…”
Section: Resultsmentioning
confidence: 98%
“…Interval chose to discretize time series, i.e, time spent eating, ruminating and resting should be balance the power to detect changes as activities occur and the accuracy without incurring errors of assessment (FISCHER et al, 2000). Some researchers have been working with different time scales and used five minutes (ÍTAVO et al, 2008;FREITAS et al, 2010), 10 minutes (BREMM et al, 2008) and 60 minutes between observations (BORJA et al, 2009). The ingestive behavior, considering the number of discrete periods of activity, the time scale of observation more than five minutes is used once it better detect the frequency for each daily activity; which would decrease the loss of observations (SILVA et al, 2006).…”
Section: Methodological Aspectsmentioning
confidence: 99%
“…Sabe-se que a única duração de avaliação que expressa realmente o comportamento do animal, em termos de aspectos metabólicos, ao longo do dia é o de 24 horas, e que já foi utilizado por alguns autores (BREMM et al, 2008;FREITAS et al, 2010), entretanto existem outros autores que utilizaram o tempo de avaliação de 20 horas (OLIVO et al, 2006), 12 horas (ÍTAVO et al, 2008SILVA et al, 2010), 11 horas (MACARI et al, 2007, 10 horas (PEREIRA et al, 2005;SOUZA et al, 2007) e 9 horas e 20 minutos (PARDO et al, 2003).…”
Section: Introductionunclassified
“…O mesmo ocorre com o intervalo de observação, pois desde a década de 70, observou-se que os resultados do intervalo de cinco minutos eram semelhantes aos da avaliação contínua (GARY; SHERRITT;HALE, 1970), no entanto existem pesquisadores utilizando cinco minutos (ÍTAVO et al, 2008;FREITAS et al, 2010) e outros utilizando 10 minutos (BREMM et al, 2008;SILVA et al, 2008;BAGGIO et al, 2009). Verifica-se que o maior intervalo utilizado é o de 10 minutos, mas será que é possível a utilização de intervalos superiores.…”
Section: Introductionunclassified