Effects of particle size and physical effective fibre (peNDF) of rice straw in diets on chewing activities, feed intake, flow, site and extent of digestion and rumen fermentation in goats were investigated. A 4×4 Latin square design was employed using 4 mature Liuyang black goats fitted with permanent ruminal, duodenal, and terminal ileal fistulae. During each of the 4 periods, goats were offer...

Hofírek B. , D. Haas: Comparative Studies of Ruminal Fluid Collected by Oral Tube or by Puncture of the Caudoventral Ruminal Sac. Acta Vet. Brno 2001, 70: 27-33. Samples of ruminal fluid were collected in four groups of high-producing dairy cows simultaneously by an oral probe and by percutaneous puncture of the caudoventral ruminal sac. The samples were tested for basic indicators of the metab...

Effect of various doses and forms of selenium (organically bound vs. inorganic) on selected parameters of ruminal fluid and blood in sheep was evaluated. The trial was performed with 15 sheep divided into two groups. Animals from group A (n = 8) received a feeding mixture with selenomethionine, while sheep from group B (n = 7) were fed a mixture with sodium selenite. During the first 14 days, a...

A metabolism study was conducted to evaluate ruminal fermentation and apparent total tract digestibilities of cattle finishing diets. Holstein steers (n = 16, 351 kg of BW) with ruminal cannulas were fed diets consisting of 0 or 25% dried corn distillers grains (DDG), using dry-rolled corn (DRC) or steam-flaked corn (SFC) as the principal energy source (2 x 2 factorial arrangement). The study w...

A feedlot growth-performance trial and a metabolism trial were conducted to evaluate the interaction of forage level (10 vs 20%) and monensin (0 vs 28 mg/kg, air-dry basis) on utilization of a steam-flaked corn-based finishing diet. There were no treatment interactions (P > .10) on feedlot cattle growth performance or site and extent of digestion of OM, ADF, N, and starch. Monensin supplementat...

The effects of supplying increasing ruminal doses of exogenous polysaccharide-degrading enzymes (EPDE) on rumen fermentation and nutrient digestion were studied using eight ruminally cannulated heifers, four of which were also duodenally cannulated, in a replicated Latin square. The heifers were fed a diet of 85.5% rolled barley grain and 14% barley silage (DM basis), and once daily they were g...

Pentachlorophenol (PCP) is used extensively as a biocidal agent, and there is considerable concern about the adverse effects of this compound in biological ecosystems. The effects of PCP on the growth and fermentative activity of cultures of mixed ruminal microorganisms and the sensitivity of 14 ruminal bacterial species to PCP in pure culture were examined in this study. Increasing concentrati...

Ruminal lactic acidosis is a condition that arises in ruminants due to the ingestion of excess quantities of easily digestible grains leading to diarrhea, anorexia and physiological derangements which can be fatal in severe cases. A clinical case of cow with history of rice flour ingestion showing signs of acute ruminal lactic acidosis was managed. The pH of ruminal fluid was 5.1. The number of...

The present study was conducted to determine clinico-haematobiochemical changes in ruminal acidosis-affected South Down sheep in Kashmir valley. Thirty two healthy sheep were taken as control whose parameters were compared with thirty two sheep suffering from ruminal acidosis. Clinical parameters were measured using standard techniques. Ruminal fluid, urine and blood was examined for microscopi...