Consumo e digestibilidade de feno de baixa qualidade suplementado com nitrogênio não protéico em bovinos

Mallmann, Giovanni Mateus; Patiño, Harold Ospina; Silveira, André Luís Finkler da; Medeiros, Fábio Schuler; Knorr, Marcelo

doi:10.1590/s0100-204x2006000200019

Cited by 11 publications

(10 citation statements)

References 17 publications

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“…Na ovinocultura, tem-se buscado caminhos para o estabelecimento de sistemas de produção capazes de produzir, de forma eficiente, carne de boa qualidade a baixo custo. No entanto, a produtividade desses animais nos trópicos ainda é baixa, principalmente em razão da distribuição estacional e da variação qualitativa e quantitativa da forragem (Mallmann et al, 2006).…”

Section: Introductionunclassified

Suplementos para ovinos mantidos em pastos de capim-marandu

Carvalho

Cabral

Zervoudakis

et al. 2011

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o efeito da suplementação na resposta produtiva, no pH e no nitrogênio amoniacal ruminal, e no custo de produção de ovinos em pastagem de capim-marandu no período da seca. O experimento teve a duração de 84 dias. Utilizaram-se 20 cordeiros não castrados com idade e peso corporal inicial médios de quatro meses e 24,20 kg, respectivamente, para avaliação do desenvolvimento, distribuídos em cada um dos tratamentos que são os suplementos, mineral, energético, proteico e múltiplo, com cinco animais por tatamento, em área de 0,1 ha. Para avaliação dos parâmetros nutricionais, foram utilizados quatro ovinos fistulados no rúmen com 12 meses e 55 kg de peso corporal foram distribuídos em quatro piquetes de 0,1 ha. Avaliaram-se os suplementos mineral, energético, múltiplo e proteico. Os ganhos de peso foram de 0,017, -0,008, 0,024 e 0,077 kg por dia para os suplementos mineral, energético, múltiplo e proteico, respectivamente. Quatro horas após suplementação, os valores de pH ruminal foram de 6,30, 6,40, 6,18 e 6,24 para os suplementos mineral, energético, múltiplo e proteico, respectivamente. Os valores para nitrogênio amoniacal do líquido ruminal foram de 10,57, 7,36, 21,58 e 24,50 mg dL -1 para os suplementos mineral, energético, múltiplo e proteico, respectivamente. Os suplementos mineral e proteico produziram o ganho de peso com o menor custo. O uso de suplemento energético para cordeiros submetidos à forragem com baixo teor de proteína reduz o ganho de peso.Termos para indexação: capim-braquiária, ganho de peso, parâmetros ruminais, proteína, rentabilidade, suplementação. Supplements for sheep maintained on marandu grass pasturesAbstract -The objective of this work was to evaluate the effect of supplementation on the productive response, ruminal pH and ammoniacal nitrogen, and production cost of sheep grazing marandu grass in the dry season. The experiment lasted 84 days. Twenty noncastrated lambs with average age and initial body weight of four months and 24.2 kg, respectively, were used for performance evaluation, and were distributed in the following treatments which are, mineral salt, energetic, multiple and proteic supplements, with five animals per treatment, in area of 0.1 ha. For nutritional parameters evaluation, four rumen fitted sheep with 12 months of age and 55 kg of weight were distributed in four paddocks of 0.1 ha. Mineral salt, energetic, multiple and proteic supplements were evaluated. Weight gains were 0.017, -0.008, 0.024 and 0.077 kg per day for mineral salt, energetic, proteic and multiple supplements, respectively. Four hours after supplementation, ruminal pH values were 6.30, 6.40, 6.18 and 6.24 for mineral salt, energetic, multiple and proteic supplements, respectively. Values for ammoniacal nitrogen in the rumen fluid were 10.57, 7.36, 21.58 and 24.50 mg dL -1 for mineral salt, energetic, multiple and proteic supplements, respectively. Mineral salt and proteic supplements produced weight gain with the lowest cost. The use of energetic supplement...

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Section: Introductionunclassified

Suplementos para ovinos mantidos em pastos de capim-marandu

Carvalho

Cabral

Zervoudakis

et al. 2011

Pesq. agropec. bras.

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“…Results in improving the digestibility of forage with supply of concentrate supplementation were found by several authors with cattle (Mallmann et al, 2006;Gomes et al, 2006;Acedo et al, 2007;Oliveira et al, 2004;Santos et al, 2004).…”

Section: Resultsmentioning

confidence: 90%

Santa Inês sheep supplementation on urochloa grass pasture during the dry season: intake, nutrient digestibility and performance

Almeida¹,

Pereira²,

Silva³

et al. 2012

R. Bras. Zootec.

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-This study was conducted with the objective of evaluating the effect of concentrate supplementation, formulated with different ingredients (Mesquite pod meal, sorghum meal or wheat meal and mineral supplementation) on performance, intake and digestibility of nutrients in Santa Inês lambs grazing on urochloa grass during the dry season. Twentyfour uncastrated weaned Santa Inês sheep, with average body weight (BW) 20±2 kg with an average of 120 days of age were used in the assay. The experiment lasted 75 days. The animals grazing deferred Urochloa grass (Urochloa mosambicensis (Hack) Daudy) were distributed into four treatments consisting of mineral supplementation provided ad libitum and concentrated supplements containing mesquite pod meal, sorghum meal or wheat meal, supplied 10 g /kg BW on dry matter basis. The intakes of dry matter (DM) and crude protein (CP) were affected by the intake of concentrate supplement, regardless of the ingredients used in the supplements, compared with the mineral supplementation treatment, since the consumption of forage was reduced in 30% with mesquite pod meal supplement, and neutral detergent fiber (NDF) intake was not affected in relation to treatments. The digestibility of DM and CP were higher for treatments with supplements, and NDF digestibility did not differ between treatments. A significant difference was observed in the values of average daily gain for the treatments with concentrate supplementation compared with the one of mineral supplementation. The supplementation with concentrate in grazing enables improvement of performance, intake and digestibility of nutrients regardless of the ingredient used in the supplement.

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“…The nitrogen supply in the diet associated with TDN in adequate amounts provides the maintenance of microbial activity (MALLMANN et al, 2006), and this relationship allows the optimization of feed and the rumen environment (MATHIS et al, 2000).…”

Section: Variablesmentioning

confidence: 99%

Correlations of intake, digestibility and performance with the ingestive behavior of lambs fed diets containing ammoniated buffel grass hay

Perazzo

Neto

Ribeiro

et al. 2016

SCA

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Correlations of intake, digestibility and performance with the AbstractThis study aimed to evaluate the correlations of intake, digestibility and performance with the ingestive behavior of lambs fed diets containing ammoniated buffel grass hay. Buffel grass hay was treated with four levels of urea (0, 18, 36 and 54 g/kg DM basis) and eight repetitions. Thirty-two sheep with no defined breed and an average body weight of 17.7 ± 1.8 kg were distributed in a completely randomized design. It was observed positive correlations were found between the feeding time and the intake of dry matter (r = 0.3120), organic matter (r = 0.3242), neutral detergent fiber (r = 0.3800), total carbohydrates (r = 0.3343) and total digestible nutrients (r = 0.3233). Positive correlations (P<0.05) were found among the rumination efficiencies, g of DM/h and g of NDF/h with nutrient intake variables, except for ether extract intake. Positive correlations were observed (P<0.05) between both total weight gain (TWG) and average daily gain (ADG) and the rumination efficiency, g of DM/h (r = 0.3330) and g of NDF/h (r = 0.3304). The feeding and rumination efficiencies have a positive relationship with the total digestible nutrients. The correlation among intake, digestibility and performance variables with the ingestive behavior, it was important for the understanding of diet containing ammoniated buffel grass hay, in which the positive correlation of rumination efficiency with intake and weight gain explained the favorable effect on productive performance of feedlot sheep. ResumoObjetivou-se avaliar as correlações entre o consumo, digestibilidade e desempenho com o comportamento ingestivo de cordeiros confinados alimentados com dietas contendo feno de capim-buffel amonizado. Os tratamentos experimentais consistiram em quatro dietas contendo os fenos de capim-buffel amonizados com as diferentes concentrações de uréia (0, 18, 36 e 54 g/kg na MS) e oito repetições. Foram utilizados 32 ovinos sem padrão racial definido (SPRD), com peso vivo médio de 17,7 ± 1,8 kg, distribuídos em delineamento experimental inteiramente casualizado (DIC). Foram verificadas correlações positivas entre o tempo de alimentação e os consumos: de matéria seca (r=0,3120), matéria orgânica (0,3242), fibra em detergente neutro (r=0,3800), carboidratos totais (r=0,3343) e nutrientes digestíveis totais (r=0,3233). Correlações positivas (P<0,05) foram encontradas entre as eficiências de ruminação, g MS/h e g FDN/h, com as variáveis de consumo de nutrientes, exceto para consumo de extrato etéreo. Indicando conformidade dos resultados com as variáveis de consumo, foram observadas correlações positivas (P<0,05) encontradas para ganho de peso total e ganho médio diário entre as eficiências de ruminação, g MS/h (r=0,3330) e g FDN/h (r=0,3304). As eficiências de alimentação e ruminação apresentam relação positiva com os nutrientes digestíveis totais. O estudo da correlação entre as variáveis foi importante para o entendimento da dieta contendo feno de capim-buffel amonizado, onde a c...

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Consumo e digestibilidade de feno de baixa qualidade suplementado com nitrogênio não protéico em bovinos

Cited by 11 publications

References 17 publications

Suplementos para ovinos mantidos em pastos de capim-marandu

Suplementos para ovinos mantidos em pastos de capim-marandu

Santa Inês sheep supplementation on urochloa grass pasture during the dry season: intake, nutrient digestibility and performance

Correlations of intake, digestibility and performance with the ingestive behavior of lambs fed diets containing ammoniated buffel grass hay

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