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- W1569552713 abstract "EnglishRuminal kinetics of six grazing dairy cows offered four kg of concentrate as a supplement of either elephant grass (Pennisetum purpureum) (NAP), braquiaria grass (Brachiaria decumbens) (BRA) or coloniao grass (Panicum maximum) (COL) were determined in a duplicate latin square design (3x3). Ruminal retention time for NAP, BRA and e COL were, respectively, 25.1a, 27.7a and 18.9b h for cell walls and 23.0a, 34.7b and 21.6a h for protein. Ruminal volume was 76.5 l with a dilution rate of 14.5%/h. Animals fed with NAP and COL showed similar acetate concentrations (105.4 and 109.7 mmol/l) being these values higher than that obtained from animals fed BRA (96.2 mmol/l). Values of pH and N-NH3 were similar with averages of 6.23 and 27.7 mg/100 ml, respectively. It was concluded that when feeding on tropical pastures is well managed, the grasses tend to show similar ruminal kinetic parameters. portuguesquatro quilos de concentrado e pastejando piquetes de capim elefante (Pennisetum purpureum) (NAP), braquiaria (Brachiaria decumbens) (BRA) ou coloniao (Panicum maximum) (COL) em um delineamento de quadrado latino (3 x 3). Os tempos medios de retencao ruminal para a parede celular dos pastos NAP, BRA e COL foram, respectivamente, 25,1a; 27,7a e 18,9b h e os da proteina, 23,0a; 34,7b e 21,6a h. O volume do liquido ruminal foi de 76,5 L com taxa de diluicao de 14,5%/h. Os animais alimentados com NAP e COL apresentaram concentracoes de acetato similares (105,4 e 109,7 mmol/l) e superiores aos alimentados com BRA (96,2 mmol/l). Os valores de pH e N-NH3 foram semelhantes sendo observadas medias de 6,23 e 27,7 mg/100 ml respectivamente. Concluiu-se que quando bem manejadas, as forragens tropicais tendem a apresentar parâmetros de cinetica ruminal semelhantes." @default.
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- W1569552713 date "2007-01-01" @default.
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- W1569552713 title "CINÉTICA RUMINAL DE VACAS LEITEIRAS A PASTO CONSUMINDO DIFERENTES GRAMÍNEAS TROPICAIS" @default.
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