Navegando por Autor "Gardinal, Rodrigo"

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    Short-term use of monensin and tannins as feed additives on digestibility and methanogenesis in cattle
    (2020) Perna Junior, Flavio; Vásquez, Diana Carolina Zapata; Gardinal, Rodrigo; Meyer, Paula Marques; Berndt, Alexandre; Friguetto, Rosa Toyoko Shiraishi; Demarchi, João José Assumpção de Abreu; Rodrigues, Paulo Henrique Mazza
    ABSTRACT The objective was to assess the effects short-term use of monensin and Acacia mearnsii tannins as feed additives on nutrient intake, digestibility, and CH4 production in cattle. Six rumen-cannulated Holstein cows were distributed in two 3×3 Latin square experimental design, and each experimental period lasted 21 days. The basal diet was composed of corn silage and concentrate in a 50:50 dry matter (DM) basis proportion. Treatments were control, monensin (18 mg kg−1 of DM), and tannin-rich extract from Acacia mearnsii (total tannins equivalent to 6 g kg−1 of DM). Nutrient intake and apparent digestibility coefficients were not affected by the addition of monensin or tannins to diets. However, tannins showed a tendency to reduce crude protein digestibility. Monensin decreased CH4 emission by 25.6% (g kg−1 of body weight) compared with the control treatment. Monensin is more effective than Acacia mearnsii tannins in reducing CH4 emissions in the short term, considering a diet of the same roughage:concentrate proportion for cattle.
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    Short-term use of monensin and tannins as feed additives on digestibility and methanogenesis in cattle
    (2020) Perna Junior, Flavio; Vásquez, Diana Carolina Zapata; Gardinal, Rodrigo; Meyer, Paula Marques; Berndt, Alexandre; Friguetto, Rosa Toyoko Shiraishi; Demarchi, João José Assumpção de Abreu; Rodrigues, Paulo Henrique Mazza
    ABSTRACT The objective was to assess the effects short-term use of monensin and Acacia mearnsii tannins as feed additives on nutrient intake, digestibility, and CH4 production in cattle. Six rumen-cannulated Holstein cows were distributed in two 3×3 Latin square experimental design, and each experimental period lasted 21 days. The basal diet was composed of corn silage and concentrate in a 50:50 dry matter (DM) basis proportion. Treatments were control, monensin (18 mg kg−1 of DM), and tannin-rich extract from Acacia mearnsii (total tannins equivalent to 6 g kg−1 of DM). Nutrient intake and apparent digestibility coefficients were not affected by the addition of monensin or tannins to diets. However, tannins showed a tendency to reduce crude protein digestibility. Monensin decreased CH4 emission by 25.6% (g kg−1 of body weight) compared with the control treatment. Monensin is more effective than Acacia mearnsii tannins in reducing CH4 emissions in the short term, considering a diet of the same roughage:concentrate proportion for cattle.