Acute acidosis was induced in sheep, and gastrointestinal permeability was assessed by using lactulose as a permeability marker. Metabolism was evaluated by monitoring blood metabolites. Four rams (72.5 ± 4.6 kg BW) were used in a 2 × 2 changeover design experiment. The experimental period lasted 96 h from -24 to 72 h. After 24 h of fasting (from -24 to 0 h) for both controls and acidosis-induc...

theaim of the current study was to assess effects of different levels of origanum vulgare (0, 250, 500, 750 and 1000 mg/l) on kinetics of gas production, some ruminal digestion and fermentation parameters, methane production and also to determine its potential in controlling rumen acidosis using in vitro method in four separate phases. in the first phase, the asymptote of gas production (a) and...

Studies show that acidosis is a very significant disorder of cattle. Studies in Wisconsin found that 20.1 and 23% of cows had subacute acidosis as defined by rumen pH < 5.5 (Oetzel et al., 1999, Oetzel, 2004) and others in Ireland had 11% (O'Grady et al., 2008). A large Australian study found that 10% of dairy cows less than 100 days in milk had acidosis, as defined by assessment of ruminal VFA...

Two in vitro studies were carried out on nonlactating dairy cows. Experiment 1 compared the methanogenesis and rumen fermentation parameters of various microalgae (Spirulina platensis, Chlorella vulgaris, Schizochytrium spp.) protein feeds (sunflower meal, soybean alfalfa hay) with monensin (MON). Rumen determined by an gas production system. 2 ability three to prevent acidosis. They tested for...

The effects of rumen buffer agents on ruminal fermentation parameters and bacterial community composition were determined using in vitro vivo experiments three rumen-cannulated, high-concentrate fed Holstein Friesian dairy cows. Experiment 1 treatments included bentonite, calcium carbonate, oxide, sodium bicarbonate, sesquicarbonate, processed coral, unbuffered samples served as the control. 2 ...

High-grain adaptation programs are widely used with feedlot cattle to balance enhanced growth performance against the risk of acidosis. This adaptation to a high-grain diet from a high-forage diet is known to change the rumen microbial population structure and help establish a stable microbial population within the rumen. Therefore, to evaluate bacterial population dynamics during adaptation to...

Rumen microbiota intervention has long been used to cure ruminal indigestion in production and recently become a research hotspot. However, how it controls the remodeling of rumen bacterial homeostasis restoration fermentation cows subacute acidosis (SARA) remains poorly understood. This study explored changes communities SARA following content transplantation (RCT). The entire experiment compr...

Fermentation of grain in the rumen and the digestion of starch in the small intestine are influenced by both animal and grain characteristics. Two assays were established to determine the importance of grain characteristics on fermentation and enzyme digestion. To simulate microbial fermentation in the rumen finely milled samples of grain were incubated in rumen fluid and the end products of fe...

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 ...

Sugars are rapidly and extensively fermented in the rumen. Clearly, adding sugar to a diet already high in ruminally degraded carbohydrates should offer little benefit and could decrease digestibility of fiber, whereas diets that have less-than-optimal rumen degraded carbohydrate probably will benefit the most from addition of sugars. Therefore, dietary situations influence the optimum feeding ...