for induction of ruminal acidosis, 10 clinically healthy three years old non pregnant female sheep were selected. prior to the infusion of sucrose (0 hour), rumen and blood samples were obtained in order to determine baseline rumen and blood ph, respectively. electrocardiogram (ecg) was also recorded. acute ruminal acidosis was induced experimentally with sucrose at a dose of 18g kg-1 body weig...

Dried distillers grains with solubles (DDGS) can decrease rumen pH because of their inherent acidity. Two replicated 4 × 4 Latin square experiments were conducted with ruminally fistulated heifers to determine the effects of dietary inclusion and NaOH treatment of DDGS on rumen metabolism. In Exp. 1, dietary treatments were 0%, 20%, 40%, or 60% DDGS on a DM basis. The remainder of the diet was ...

All mechanistic rumen models cover the main drivers of variation in rumen function, which are feed intake, the differences between feedstuffs and feeds in their intrinsic rumen degradation characteristics, and fractional outflow rate of fluid and particulate matter. Dynamic modeling approaches are best suited to the prediction of more nuanced responses in rumen metabolism, and represent the dyn...

thirty six male chall lambs (four-month old and 26  ±1.5 kg body weight) were randomly assigned into four treatments (nine lambs per treatment) to study the effect of powerfeed® (a commercial mixture made from wheat processing by-product and wheat bran) on weight gain, feed intake, feed conversion ratio, serum sodium and potassium concentration and urine ph. lambs in control group were fed with...

UNLABELLED To study the effects of an extract of plant flavonoids [Bioflavex (FL)] in cattle fed high-concentrate diets, 2 experiments were designed. In the first experiment, the effects of Bioflavex on the development of rumen acidosis was evaluated in 8 Holstein-Friesian crossbreed heifers (451 kg; SEM 14.3 kg of BW) using a crossover design. Each experimental period lasted 22 d; from d 1 to ...

Because of the extensive hydrolysis of dietary proteins in the rumen and the attendant wastage of nitrogen which is absorbed as ammonia across the rumen wall and excreted as urea in the urine, the ruminal synthesis of bacterial and protozoal proteins has a special importance in the nutrition of the ruminant. This paper considers the factors influencing microbial protein synthesis in simple in v...

1. Three sheep fitted with rumen cannulas were fed hourly a daily ration of 1000 g pelleted-grass cubes, and during four successive 2-week periods were intraruminally infused (0.45 l/d) with solutions containing sodium chloride (0.47 mol/d), sodium bicarbonate (0.47 mol/d), .ammonium chloride (0.47 mol/d) and sodium butyrate (0.47 mol/d). Each solution, except that for NaHCO,, was adjusted to p...

Lasalocid, monensin or thiopeptin was administered intraruminally each at .33, .65 or 1.3 mg/kg body weight and evaluated for its effectiveness in preventing experimentally induced lactic acidosis in cattle. Four rumen-fistulated cattle were used for each dosage level and the design was a 4 x 4 Latin square with each animal receiving lasalocid, monensin, thiopeptin or no antibiotic. Acidosis wa...

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...

the objective of this study was to evaluate the effects of supplementation of different level protein diets with rumen protected methionine and lysine on performance and ruminal parameters in holstein dairy cows when in their early lactation. twenty one dairy cows in their early lactations were assigned to three treatments in a randomized block design experiment of a 35-d duration period. diets...