2010
DOI: 10.1590/s1516-35982010000500026
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Balanço de nitrogênio em fêmeas leiteiras em confinamento alimentadas com concentrado à base de farelo de soja ou farelo de algodão

Abstract: RESUMO -Avaliou-se a influência do fornecimento de concentrados à base de farelo de soja ou farelo de algodão em dietas com silagem de milho sobre o balanço de nitrogênio e a produção de proteína microbiana em fêmeas leiteiras em crescimento. As dietas foram constituídas da combinação de dois níveis de concentrado (1 ou 2 kg) e duas fontes proteicas (farelo de soja ou farelo de algodão). Os animais que consumiram concentrado na quantidade de 2 kg/dia apresentaram maior consumo de nitrogênio total, entretanto n… Show more

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Cited by 8 publications
(11 citation statements)
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References 17 publications
(20 reference statements)
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“…The urinary excretion of nitrogenous compounds was not altered (P>0.05) by the different levels of DM intake (Table 4). Santos et al (2010), working with crossbred Holstein-Zebu cattle with diet containing two amounts of concentrate (1 or 2 kg) and two protein sources (soybean meal or cottonseed meal) also did not observe effect of the excretion of N in the urine. The same behavior was obtained by Rennó et al (2000) who, working with beef-breed steers, did not observe differences Table 4 -Means of nitrogen compounds ingested, excreted in the urine, and in the feces and nitrogen balance for the dry matter intake levels CV -coefficient of variation.…”
Section: Resultsmentioning
confidence: 86%
“…The urinary excretion of nitrogenous compounds was not altered (P>0.05) by the different levels of DM intake (Table 4). Santos et al (2010), working with crossbred Holstein-Zebu cattle with diet containing two amounts of concentrate (1 or 2 kg) and two protein sources (soybean meal or cottonseed meal) also did not observe effect of the excretion of N in the urine. The same behavior was obtained by Rennó et al (2000) who, working with beef-breed steers, did not observe differences Table 4 -Means of nitrogen compounds ingested, excreted in the urine, and in the feces and nitrogen balance for the dry matter intake levels CV -coefficient of variation.…”
Section: Resultsmentioning
confidence: 86%
“…Tissue samples were collected from the anterior portion of the ventral sac of the rumen [13,20,33] at 65 d after birth. The rumen epithelium was manually separated from the underlying muscular layer by gloved hands and rinsed in tap water to remove residual feed particles.…”
Section: Tissue Collection and Rna Extractionmentioning
confidence: 99%
“…Nela, a forragem é o item de maior representatividade. Os animais, nessa fase, obtiveram ganho de peso médio (GPM) de 503gramas/dia, inferior aos 680gramas/dia, encontrados por Signoretti et al (2013). O GPM ideal, mencionado por Santos et al (2010), é entre 650 a 780gramas/dia.…”
Section: Ingredienteunclassified
“…Os animais, nessa fase, obtiveram ganho de peso médio (GPM) de 503gramas/dia, inferior aos 680gramas/dia, encontrados por Signoretti et al (2013). O GPM ideal, mencionado por Santos et al (2010), é entre 650 a 780gramas/dia. O GPM, obtido pelos animais desta pesquisa, contribui para elevar o custo de produção, uma vez que aumenta a quantidade de animais na fase de recria, bem como retarda a idade à parição.…”
Section: Ingredienteunclassified
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