In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds

Zorzi, Karina; Detmann, Edênio; Queiróz, Augusto César de; Paulino, Mário Fonseca; Mantovani, Hilário Cuquetto; Bayão, Geraldo Fábio Viana

doi:10.1590/s1516-35982009000500025

Cited by 12 publications

(27 citation statements)

References 21 publications

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“…On the other hand, despite the beneficial effects of nitrogen on ruminal fibrolytic activity when low-quality forage is offered to animals , several in vitro studies concluded that supplementation with true protein causes deleterious effects on the degradation of neutral detergent fiber (NDF) from high-quality forage (Paez-Bernal, 2007;Costa et al, 2009;Zorzi et al, 2009), and reductions in gas production from carbohydrates (Cone & Van Gelder, 1999;Mould et al, 2005;Oliveira et al, 2005). However, these negative effects would not be observed upon the addition of urea to the medium (Paez-Bernal, 2007;Zorzi et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Growth and antimicrobial activity of lactic acid bacteria from rumen fluid according to energy or nitrogen source

et al. 2011

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-The objective of this study was to evaluate the effects of supplementation with different sources of energy and nitrogenous compounds on the in vitro growth and production of bacteriocin of lactic acid bacteria. Incubations were performed by using ruminal fluid from a rumen-fistulated Holstein-Zebu steer. The animal was kept on a Brachiaria decumbens pasture receiving 200 g/day of supplemental crude protein. Substrates and inoculum were placed in glass flasks considering eight treatments: cellulose, cellulose and casein, cellulose and soy peptone, cellulose and urea, starch, starch and casein, starch and soy peptone and starch and urea. Successive incubations were conducted to select microorganisms according to the energy sources and nitrogenous compounds. Starch favoured growth of lactic acid bacteria when compared to cellulose. Supplementation with true protein (soy peptone and casein) stimulated the growth of these bacteria when compared to the control (without supplementation with nitrogenous compounds). The addition of urea did not stimulate the growth of lactic acid bacteria. No antimicrobial activity was detected from colonies of isolated lactic acid bacteria. Sources of true protein increase the competition between non-structural and structural carbohydrates fermenting bacteria.

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Section: Introductionmentioning

confidence: 99%

Growth and antimicrobial activity of lactic acid bacteria from rumen fluid according to energy or nitrogen source

et al. 2011

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“…According to Zorzi, Detmann, Queiroz, Mantovani and Bayão (2009), nitrogen supplementation for cattle reared on pasture during the rainy period increases the efficiency of pasture use by maximizing microbial activity and, consequently, fiber degradation. Protein salt (57% corn meal, 16% soybean meal, 13% urea, 1.3% ammonium sulfate, 1.7% common salt and 11% mineral salt); 2 multiple mixture (44.5% corn meal, 50% soybean meal and 5.5% mineral salt); 3 standard error of the mean; 4 SMin = mineral salt, Supl = supplement, SPro = proteined salt; Smul = multiple mixture); 5 increase in weight gain increase -1 of supplement intake in relation to SMin treatment.…”

Section: Resultsmentioning

confidence: 99%

<b>Performance of Holstein-Gyr crossbred heifers on pasture of <i>Brachiaria decumbens</i> supplemented with multiple supplement or proteined salt

Santos

Lana

Teixeira

2017

Acta Sci. Anim. Sci.

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ABSTRACT. This study aimed to evaluate the performance, efficiency and economic viability of different supplements for dairy heifers on Brachiaria decumbens pasture. Twelve heifers with 186 ± 30.5 kg average weight were divided in three groups of four animals. The treatments were mineral salt ad libitum; 0.4 kg animal multiple supplement. The experimental design was randomized blocks, with the contrasts considered significant at 5% probability. There was greater (p < 0.05) body weight and higher daily weight gain in animals supplemented with proteined salt or multiple supplement, compared to supplemented with mineral salt. There was no difference (p > 0.05) in any of the performance parameters between proteined salt and multiple supplement. The use efficiency was 1.31 and 0.61 for proteined salt and multiple supplement, respectively. The cost per kg weight gain in treatments with mineral salt, proteined salt and multiple supplement was R$ 0.67, R$ 0.68 and R$ 1.25, respectively. The use of proteined salt or multiple supplement provides superior performance than mineral salt in crossbred heifers. However, the proteined salt has higher utilization efficiency and economic advantage.Keywords: agrosilvipastoral system, crossbred cows, protein supplementation. de mistura múltipla. O delineamento experimental utilizado foi o de blocos casualizados, sendo os contrastes considerados significativos a 5% de probabilidade. Houve maior (p < 0,05) peso corporal e maior ganho de peso diário dos animais suplementados com sal proteinado ou mistura múltipla, em comparação aos suplementados com sal mineral. Não houve diferença (p > 0,05) entre sal proteinado e mistura múltipla em nenhum dos parâmetros de desempenho. A eficiência de uso foi de 1,31 e 0,61 para sal proteinado e mistura múltipla, respectivamente. O custo por kg de peso ganho nos tratamentos sal mineral, sal proteinado e mistura múltipla foi R$ 0,67, R$ 0,78 e R$ 1,25, respectivamente. A utilização de sal proteinado ou mistura múltipla proporciona desempenho superior ao sal mineral na alimentação de novilhas girolandas. Porém, a utilização de sal proteinado apresenta maior eficiência e vantagem econômica. Desempenho de novilhas Girolandas em pasto dePalavras-chave: sistema agrossilvipastoril, vaca mestiça, suplementação proteica.

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“…Contudo, em trabalhos conduzidos em ambiente in vitro utilizando forragens tropicais de alta qualidade, similares às observadas em pastagens durante o período das águas, Paez-Bernal (2007), Costa et al (2009) e Zorzi et al (2009 verificaram que a suplementação exclusiva com proteína verdadeira pode causar efeitos deletérios sobre a utilização microbiana da fibra em detergente neutro (FDN), ao passo que a suplementação com ureia permitiria ampliação do crescimento microbiano sobre a FDN (Paez-Bernal, 2007;Zorzi et al, 2009). Entretanto, ponto de equilíbrio entre compostos nitrogenados proteicos e não-proteicos parece definir a máxima utilização dos substratos fibrosos basais (Paez-Bernal, 2007;Zorzi et al, 2009).…”

Section: Introductionunclassified

“…Entretanto, ponto de equilíbrio entre compostos nitrogenados proteicos e não-proteicos parece definir a máxima utilização dos substratos fibrosos basais (Paez-Bernal, 2007;Zorzi et al, 2009).…”

Section: Introductionunclassified

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Consumo e dinâmica ruminal da fibra em detergente neutro em bovinos em pastejo no período das águas recebendo suplementação com nitrogênio não-proteico e/ou proteína verdadeira

et al. 2011

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RESUMO -Objetivou-se avaliar o efeito de diferentes relações entre proteína verdadeira e nitrogênio não-proteico sobre o consumo e a dinâmica de trânsito e degradação ruminal da fibra em detergente neutro (FDN) da forragem em bovinos em pastejo durante o período das águas. Foram utilizados cinco novilhos mestiços Holandês × Zebu, castrados, com peso corporal inicial de 335±35 kg fistulados no rúmen e no abomaso. Os tratamentos foram: controle (somente pasto); e suplementos com ureia; com 2/3 de compostos nitrogenados oriundos da ureia e 1/3 de compostos nitrogenados oriundos da albumina; com 1/3 de compostos nitrogenados oriundos da ureia e 2/3 de compostos nitrogenados oriundos da albumina; e com albumina. effects of supplementation on voluntary intake, except for CP intake, which was increased by supplementation. The replacement of urea by albumin in the supplements caused linear effect on the CP intake. The intakes of the other diet components were not affected by the supplement composition. There was no effect on ruminal rate of passage of fibrous compounds. Supplementation increased the estimates of common rate of lag and degradation of NDF. However, no effect of supplement composition alteration was observed on this parameter. Supplementation of cattle with rumen degradable (protein or non-protein) nitrogenous compounds for grazing cattle during rainy season does not affect voluntary intake of pasture.

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In vitro degradation of neutral detergent fiber of high-quality tropical forage according to supplementation with different nitrogenous compounds

Cited by 12 publications

References 21 publications

Growth and antimicrobial activity of lactic acid bacteria from rumen fluid according to energy or nitrogen source

Growth and antimicrobial activity of lactic acid bacteria from rumen fluid according to energy or nitrogen source

<b>Performance of Holstein-Gyr crossbred heifers on pasture of <i>Brachiaria decumbens</i> supplemented with multiple supplement or proteined salt

Consumo e dinâmica ruminal da fibra em detergente neutro em bovinos em pastejo no período das águas recebendo suplementação com nitrogênio não-proteico e/ou proteína verdadeira

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