Physically effective neutral detergent fiber (peNDF) is the fraction of neutral detergent fiber (NDF) that stimulates chewing activity and contributes to the floating mat of large particles in the rumen. Multiplying dietary NDF by particle size has been used as an estimate of peNDF. In re-evaluating the concept of peNDF, we compared the use of peNDF as dietary NDF × particle size with the use o...

Thirty-one Karayaka ram lambs were slaughtered at different body weights (30 (n =  7), 35 (n =  6), 40 (n =  7), 45 (n =  6), and 50 (n =  5) kg of body weight at fast) to evaluate the growth of their gastrointestinal tract (GIT) characteristics, to determine the relationship among slaughter body weight (SBW) and empty body weight (EBW), whole GIT and segments, and the influence of slaughter we...

BACKGROUND The nature and amount of dietary medicinal plants are known to influence rumen fermentation and nutrient digestibility in ruminants. Nonetheless, changes in nutrient digestibility and rumen metabolism in response to dietary Andrographis paniculata (AP) in goats are unknown. This study examined the effects of dietary supplementation of leaves and whole plant of AP on nutrient digestib...

Three sheep fitted with a ruminal cannula and an abomasal catheter were used to study water kinetics and absorption of VFA infused continuously into the rumen. The effects of changing VFA concentrations in the rumen by shifting VFA infusion rates were investigated in an experiment with a 3 x 3 Latin square design. On experimental days, the animals received the basal infusion rate of VFA (271 mm...

Background: The present study was conducted to evaluate the efficacy of Musa acuminate flower floret (MAFF) extract/chopped in goats with moderate rumen lactacidosis. Methods: Goats affected lactacidosis (MRLA) were divided into three groups. TC (Control): Eight administered magnesium oxide (@ 1g/kg PO) through stomach tube, T1: Twenty four MRLA aqueous extract MAFF (either @ 1 ml/kg, 2 ml/kg o...

this study was conducted to evaluate the possibility of alfalfa replacement with fenugreek hay for ruminants, using in vitro gas production parameters and some of rumen fermentation characteristics. for this propose, five different total mixed rations were formulated to meet nutrient requirements of 35 kg growing lambs with gradually replacement of alfalfa in control diet (t1) with different le...

Rumen Yeast® (RY; Saccharomyces cerevisiae), a live yeast strain, improves milk yield and composition and nutrients digestibility through balancing rumen ecosystem and increasing ruminal cellulolytic bacteria numbers in cattle. To examine the effects of dietary supplementation of RY in Nili-Ravi buffaloes, 16 buffaloes with 8 L average daily milk production were randomly divided into two groups...

to examine the effects of different sources of rumen-degradable carbohydrates on rumen fermentation, nitrogen metabolism and performance of holstein dairy cows, four lactating holstein cows fitted with rumen cannulae in a 4×4 latin square with four diets and four 28 day periods each, were employed. experimental diets contained different levels of pure sucrose and corn starch in which sucrose wa...

Studies were conducted to define steady state pH, propionic acid concentrations and fluid turnover in the rumen of steers fed every 3 h and to determine whether rates of ruminal propionic acid disappearance were linearly related to their in situ production rates. Ruminally fistulated beef steers (326 +/- 11 kg; n = 3) were fed eight times daily a 54% mixed hay: 46% corn-based concentrate diet t...