the aim of this paper was to study of the effect of fenugreek seed (trigonella foenum-graecum) and asparagus root (asparagus officinalis) on in vitro digestibility and kinetics of gas production of alfalfa hay. fenugreek seed (fs) and asparagus root (ar) were added at different levels (0, 5, 10, 15 and 20% of dm). total phenolic components of alfalfa hay (ah), fenugreek seed (fs) and asparagus ...

abstract             the aim of this study was to evaluate the effect of ajowan essential oils (aeo) on rumen fermentation using in vitro gas production. therefore, different doses of aeo (i.e., 0, 150, 300, 450 or 600 ppm) were added to the syringes of the gas production. a typical diet of growing lambs was used as fermentation substrate.  at the first step, the gas production syringes were in...

production of lignocellulolytic enzymes by the thermotolerant fomes sp. eum1 was determined in solid cultures using corn stover (cs) as a sole substrate or supplemented with 20 % wheat bran (cs+wb). this supplementation increased (p< 0.05) enzymatic activity per gram of initial dry matter (gdm) for xylanases and cellulases: 160 iu g dm-1 and 37 iu g dm-1, respectively; while laccases reached a ...

sheep adapted to consume tannins rich feeds such as oak leaf (ol) appear to develop defensive mechanisms by their ruminal bacteria against these polyphenols. the capabilities of ruminal isolated tannins resistant bacteria from these animals to ferment a tanniniferous feed (i.e., pistachio hulls, (ph) which were incubated with rumen fluid from holstein dairy cows was assessed. six g positive coc...

The present experiment was carried out to determine the digestion kinetics of carbohydrate fractions of citrus by-products. Grapefruit pulp (GP), lemon pulp (LE), lime pulp (LI) and orange pulp (OP) were the test feed. Digestion kinetic of whole citrus by-products and neutral detergent fiber (NDF) fraction and acid detergent fiber (ADF) fractions of citrus by-products were measured using the <e...

Four in vitro experiments (Exp.) were conducted to evaluate lavender essential oil (LEO) effects at 0 (control), 250 (low dose), 500 (medium dose), 750 and 1000 µL per L(high doses) of incubation medium on rumen gas production kinetics (Exp.1), ruminal digestibility and fermentation (Exp.2), methane production (Exp.3) and rumen acidosis (Exp.4). The asymptote of gas production (A) incr...

This study was conducted to investigate the effect of dairy cow diets containing different protein sources [soybean meal, xylose protected soybean meal (Yasminomax®), and steam-flaked whole soybean] and various partially processed grain on in vitro gas production kinetics and the microbial nitrogen yield. Soybean meal (S) and xylose protected of soybean meal (XS) were provided as 0.56:...

Background: Aflatoxins are fungal secondary metabolites negatively affecting ruminant performance; however, little information is available on their impact on rumen fermentation. Aims: This study aimed at determining the effects of different concentrations of aflatoxin B1 (AFB1) from Aspergillus flavus on in vitro gas production and ruminal fe...

in this trial, the effect of different levels of echum amoneum (ea) (0.3, 30, 300 or 3000 µl) on in vitro ruminal fermentation characteristics and methane production was assessed. the parameters studied were in vitro gas production (ivgp), methane production, ammonia (nh3-n) concentration, in vitro organic matter degradability (ivomde), partitioning factor (pf) (the ratio of substrate truly deg...