Two in vitro experiments were performed to identify promising exogenous fibrolytic enzyme products (EFE) and optimum dose rates (DR) for improving the degradation of alfalfa hay and corn silage. The relationship between enzymatic activity and fermentation responses was examined to identify optimum formulations. In experiment 1, 5 EFE containing mainly endoglucanase and xylanase activities, with...

This study aimed to investigate the effect of supplementation with a mixture molasses and condensed fermentation solubles (M-CMS) in different synchronization diets formulated forage sources an attempt improve efficiency by M-CMS. In first experiment, three levels M-CMS (N: 0%; L: 1.75%; H: 3.50%) were supplied or without corn silage evaluate on diet synchrony index (SI) 0.80. second containing...

Alpine forages are assumed to have specific effects on ruminal digestion when fed to cattle. These effects were investigated in an experiment from two perspectives, either by using such forages as a substrate for incubation or as feed for a rumen fluid donor cow. In total, six 24-h in vitro batch culture runs were performed. Rumen fluid was collected from a non-lactating donor cow after having ...

this experiment was conducted to assess the effects of daytime cutting management (p.m. vs. a.m. cut), ensiling duration and adding microbial inoculants on chemical composition of alfalfa silage. for this, second growth alfalfa harvested at the early bud stage of development after a sunny day at sundown (about 1900 h; pm alfalfa), whereas the second half was cut next day at sunup (about 0800 h;...

The experiment was conducted to evaluate losses and nutritive value of elephant grass silage containing increasing levels of cottonseed meal. The experimental design was completely randomized, with five treatments: 0, 7, 14, 21 and 28% inclusion of cottonseed meal, and four replications. The material was chopped and packed in PVC silos and stored for 80 days. The pH and dry matter (DM), crude p...

The enormous variety of substances which may be added to forage in order to manipulate and improve the ensilage process presents an empirical, combinatorial optimization problem of great complexity. To investigate the utility of genetic algorithms for designing effective silage additive combinations, a series of small-scale proof of principle silage experiments were performed with fresh ryegras...

AIMS To determine whether lactic acid bacteria (LAB) used in inoculants for silage can survive in rumen fluid (RF), and to identify those that survive best. METHODS AND RESULTS Twelve commercial silage inoculants were added at 107 CFU ml-1 to strained RF (SRF) taken from dairy cows, with and without 5 g l-1 glucose and incubated in vitro at 39 degrees C. Changes in pH, LAB numbers and ferment...

AIMS To determine the utility of vacuum-packed polythene bags as a convenient, flexible and cost-effective alternative to fixed volume glass vessels for lab-scale silage studies. METHODS AND RESULTS Using perennial ryegrass or red clover forage, similar fermentations (as assessed by pH measurement) occurred in glass tube and vacuum-packed silos over a 35-day period. As vacuum-packing devices ...

background and objectives: ensiling is a conservation method for forage crops. it is based on the fact that anaerobe lactic acid bacteria (lab) convert water-soluble carbohydrates into organic acids. therefore, ph decreases and the forage is preserved. the aim of this study was to isolate special kinds of lactic acid bacteria from silage and to study the effect of bacteria, inulin and enzymes a...

The objective of this study was to investigate the effects of chop length and inoculation of barley silage on feeding behavior, rumen fermentation, and growth performance of finishing feedlot steers. Barley forage (22-35% DM) was chopped to a theoretical chop length (TCL) of either 1.0 (short chop; SC) or 2.0 cm (long chop; LC) and ensiled without or with an esterase-producing bacterial inocula...