RT Journal Article
SR Electronic
A1 Doležal, Jan
A1 Doležal, Petr
T1 Digestibility of organic matter of total mixed rations with the supplementation of yeast culture using the in vitro method
JF Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
YR 2014
VO 55
IS 5
SP 59
OP 64
DO 10.11118/actaun200755050059
UL https://acta.mendelu.cz/artkey/acu-200705-0008.php
AB We conducted this study to evaluate the new in vitro system, DAISY<sup>II</sup> to determine organic matter (OM) digestibility in ruminant feedstuffs with and without addition of the yeast culture (RUMEX) in the amount of 0 grams; 0.30 grams and 2.40 grams/2L of rumen fluid. Three types of total mix rations (TMR) were used in the experiment. Feedstufs samples were mixed in the ruminal fluid of cows. The material was incubated at 39 degrees of Celsius for 48 hours. Results from the DAISY<sup>II</sup> were compared with one another. Higher fibrous material content in 1 kilogram of dry matter (145.4 grams or 218.6 grams) and less energy ME (10.24 MJ or 11.88 MJ/kilogram of dry matter) in each TMR gave rise to worse organic matter digestibility. The highest digestibility of organic matter was noted at TMR 1 (81.04 % (0 g) or 83.47 % (0.30 g) or 84.30 % (2.4 g) with the addition of the yeast culture) and the lowest digestibility was noted at TMR 3 (78.98 % (0 g) or 82.49 % (0.30 g) or 82.95 % (2.4 g)). The supplement of the yeast culture in the amount of 0.3 grams (P