The objectives of this study were to investigate the effect of a saponin-based surfactant, Grain Prep surfactant (GP), and hot flake aging time on starch characteristics and ruminal DM and starch degradability of steam-flaked corn grain. In 2 experiments, the moisture content of incoming corn was automatically adjusted using the Grain Prep Auto Delivery System to 19.8% (Exp. 1) and 18.5% (Exp. ...

the objectives of this study were to determine and compare the chemical composition and ruminal degradability of dry matter (dm), crude protein (cp), neutral detergent fiber (ndf) and acid detergent fiber (adf) of ten pasture forage species dominant in the west provinces of iran. duplicate nylon bags of pasture samples were suspended in the rumen of four wethers for up to 96 h. the chemical com...

Comparisons between cereal species have shown that wheat starch is fermented more rapidly in the rumen than starch from maize, barley, potato or sorghum, probably due to the protein matrix surrounding the starch granules, but there are few comparisons of starch digestion from different cultivars of wheat. Although wheat varieties are classi®ed as being hard or soft, genetic factors affecting nu...

Three Holstein steers in the growing phase, each with a ruminal cannula, were used to test the hypothesis that the synchronization of the hourly rate of carbohydrate and nitrogen (N) released in the rumen would increase the amount of retained nitrogen for growth and thus improve the efficiency of microbial protein synthesis (EMPS). In Experiment 1, in situ degradability coefficients of carbohyd...

Feeding cereal grain to cattle is common practice for optimal beef and milk production. High concentrations of starch other soluble carbohydrates may cause acidosis. Information on the effect processing protein degradability in rumen are scarce. This study was determine ruminal degradation patterns grains steam pelleting crude (CP) rumen. The pattern dry matter (DM), starch, CP ground pelleted ...

Lignin-carbohydrate complexes (LCCs) are recognised as key structures in forage degradability. Apart from ester bonds involving phenolic acids, which seem to play a major role in grasses, little is known about the other types of linkages that must exist but have proved difficult to demonstrate. The chemical nature of possible LCC linkages is presented and the various mechanisms through which LC...

Six mature sheep were fed restricted amounts of either a medium quality roughage or a 1 : 1 mixture of the roughage and barley grain. Disappearance of DM of three roughages (barley straw, oat hay and lucerne hay) from synthetic ®bre bags incubated in the rumen for 6 and 24 h was determined. Also, during intraruminal infusions of NH4C1, synthetic ®bre bags containing each of the three roughages ...

This study was conducted to determine in vitro crude protein degradation (IVDP) parameters and effective crude protein degradability (EPD) of various feeds using the modified in vitro gas production (GP) technique. Feed samples were alfalfa hay, soybean meal, soybean, rapeseed meal, sunflower meal and fish meal. Rumen fluid was collected before the morning feeding from four rumen fistulated lam...

to evaluate the nutritive value in some lignocellulosic materials, 3 sets of experiments were conducted on aspen, and grape woods. to enhance the digestibility, the woods were treated with 5% naoh. throughout the first trial, chemical composition and digestibility coefficients of dry matter, organic matter and ndf of experimental feeds, ph of rumen, as well as palatability were evaluated while ...