Digestibilidade dos compostos nitrogenados insolúveis em detergente ácido em bovinos manejados em pastagem de capim-braquiária

Detmann, Edênio; Paulino, Mário Fonseca; Silva, José Fernando Coelho da; Filho, Sebastião de Campos Valadares; Zervoudakis, Joanis Tilemahos; Cabral, Luciano da Silva; Cecon, Paulo Roberto; Lana, Rogério de Paula

doi:10.1590/s1516-35982006000500028

Cited by 4 publications

(3 citation statements)

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“…The elevation of the NPN fraction occurred due to the greater inclusion of the mixture of urea and ammonium sulfate in the diet. In spite of the enlargement of the N fractions associated with the carbohydrates and lignin of the cell wall (NDIN and ADIN), which are considered of low availability to the rumen microorganisms and those of low intestinal digestibility (Van Soest, 1994;Detmann et al, 2006;Henriques et al, 2007), the greater increase of the NPN fraction enabled an increase of 11% in the content of RDP in the diet with the total replacement of SBM by CMT.…”

Section: Resultsmentioning

confidence: 99%

“…Besides, the values of enzymes observed are within the standards established as normal for the species (Radostits et al, 2002). The main reason for the absence of intoxication in the animals is because of the alkaline treatment of CM, which promoted ricin ingestion at levels below the level considered tolerable for ruminants of 2.37 (Oliveira et al, 2010b) and 3.06 mg/kg body weight (Diniz et al, 2010).…”

Section: Resultsmentioning

confidence: 99%

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Productive performance and efficiency of utilization of the diet components in dairy cows fed castor meal treated with calcium oxide

et al. 2012

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-The effect of replacing of 0; 0.33; 0.67 and 1.0 (kg/kg) of soybean meal (SBM) by undecorticated castor seed meal treated with calcium oxide (CMT -60 g/kg) was evaluated on performance and efficiency of nutrient utilization in dairy cows. Sixteen Holstein and crossbred cows were distributed in four 4 × 4 latin squares. Animals received concentrated feed at a ratio of 1 kg for 3 kg of milk produced, in the natural matter. The diets had the same amount of nitrogen (150.4 g crude protein/kg DM), containing 325.6 g of concentrated feed/kg DM. There was no effect on the serum concentration of transaminase and the animals showed no clinical symptoms of intoxication by ricin. The intake of DM, crude protein (CP) and non-fibrous carbohydrates (NFC) reduced from 0.67 replacement of SBM by CMT. The intake of neutral detergent fibers corrected for ash and protein (NDFap) increased from 0.33 replacement of SBM with CMT. Although the digestibility of dietary components decreased from 0.33 replacement, the intake of digestible components only reduced from 0.67 replacement. Because of the reduction of digestible energy, the synthesis of microbial CP and the utilization efficiency of rumen-degradable protein for the synthesis of microbial CP reduced with full replacement of SBM by CMT. Milk yield, milk composition, daily variation of body weight and the efficiency of utilization of the nutrients for the synthesis of N in milk reduced from 0.67 replacement of SBM by CMT. Castor seed meal treated with calcium oxide can replace up to 0.33 of SBM (50 g/kg DM diet DM) in the diet of dairy cows with an average milk production of 20 kg/day.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Productive performance and efficiency of utilization of the diet components in dairy cows fed castor meal treated with calcium oxide

et al. 2012

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“…Para Cecato et al (2003) a qualidade da pastagem reflete diretamente no desempenhoanimal que é melhorado pela maior ingestão de proteína e energia digestível. Quanto ao nível de ingestão de MS esse é influenciado pelo conteúdo de FDN presente na dieta ofertada a bovinos(DETMANN et al, 2006).Na tabela 2 estão descritos a participação de fibra digestível neutra (FDN), fibra em detergente ácida (FDA) e de nutrientes digestíveis totais (NDT) na biomassa seca de Pennisetum purpureum Schum. cultivares Carajás, Cameron e Kurumi durante o período outono/inverno.…”

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