摘要
Effect of period of adaptation and levels of monensin were studied for microbial fermentation/ digestibility to find out the optimum period of adaptation of monensin in rumen and suitable level of monensin in wheat straw+concentrate and wheat straw+UMMB diet. The mean digestibility of dry matter was decreased upto T-3 treatment (49.17%), however, digestibility of DM was affected upto period (P-2). NDF digestibility was affected due to treatment under P1 and P2 (p<0.05). Average digestibility of ADF was increased to 53.33% at T-3 level of monensin and P4 days of adaptation. TVFA (mmole/100 ml) were decreased from 9.49 in T-1 to 7.70 in T-7. Periods were not effectives except P2 (14 days of adaptation). Similarly, total gas was decrease with the increase of monensin levels in diet. Although acetate percentage in TVFA was not affected either due to level of monensin or period of adaptation but propionate was increased due to increase in monensin at 21 days of adaptation (P-3). Butyrate (%) was decreased significantly in T-2 to T-6 as compared to T-1 group. Total gas was significantly (p<0.01) higher in group T-1 (control) and it reduced significantly in T-5, however, differences in gas production between group T-3, T-5 and T-7 at P-1 was not significant. Methane production was reduced on P-3 and P-4 level of adaptation due to treatment. The overall result indicated that 21 days of adaptation with monensin was sufficient to mask the inhibiting effect of monensin to cell wall digestibility and 35 ppm monensin is optimum to reduce methane production and increase propionate productions.
摘要译文
研究了微生物发酵/消化率，以找出瘤胃中莫能菌素的最佳适应期和适当水平的莫能菌素在小麦秸秆+浓缩物和小麦秸秆+ UMMB饮食中的作用。干物质的平均消化率降低至T-3处理（49.17％），然而，DM的消化率受到影响（P-2）。由于在P1和P2下处理，NDF消化率受到影响（p 0.05）。在莫能菌素的T-3水平和适应的P4天，ADF的平均消化率增加至53.33％。TVFA（毫摩尔/ 100毫升）从T-1中的9.49降至T-7中的7.70。除P2（适应14天）外，期间无效。同样的，随着饮食中莫能菌素水平的增加，总气体含量减少。虽然TVFA中的醋酸盐百分比不受莫能菌素水平或适应期的影响，但由于适应性21天时莫能菌素的增加而使丙酸盐增加（P-3）。与T-1组相比，丁酸盐（％）在T-2至T-6中显着降低。 T-1组（对照组）总气体含量显着（p 0.01），T-5显着降低，但是，P-1组T-3，T-5和T-7之间产气量差异不显着。由于处理，甲烷产量因P-3和P-4适应水平而降低。莫能菌素的含量足以掩盖莫能菌素对细胞壁消化率的抑制作用，35ppm莫能菌素是减少甲烷产生和增加丙酸产量的最佳选择。
De, Debasis; Singh, G.P.;. Effect of Different Level of Monensin Supplemented with Cold Process Urea Molasses Mineral Block on In vitro Rumen Fermentation at Different Days of Adaptation with Monensin[J]. Asian-Australasian Journal of Animal Sciences, 2005,18(3): 320-325