The effects of pressure toasting (100, 118 and 1368C for 3, 7, 15 and 30 min) of horse beans on potential ruminant protein nutritional values were evaluated by the new Dutch protein evaluation system: the DVE/OEB model. The items assessed in this experiment were: (a) rumen bypass protein (BCP); (b) rumen bypass starch (BSt); (c) fermented organic matter (FOM); (d) truly absorbed bypass protein ...

This editorial seeks to help eradicate confusions, enlighten the current perceptions, and highlight a global need to develop feasible guidelines for optimum bioprocessing of barley grain (BG). The optimum processing techniques must result in moderated rumen fermentation of starch and protein, improved rumen microbial protein synthesis, reduced risks of Sub-Acute Rumen Acidosis (SARA) and pro-in...

The present study was conducted to investigate the possibility of using a modified in vitro gas production technique in place of the nylon bag method to estimate protein degradability of alfalfa hay in ruminants. In the in situ experiment dacron bags were filled with 3 g alfalfa hay. This was incubated in the rumen of three ruminally cannulated Ghezel rams for the periods of 0, 2, 4, 8, 12, 16,...

Vaccination through recombinant proteins against rumen methanogenesis provides a mitigation approach to reduce enteric methane (CH4) emissions in ruminants. The objective of present study was to evaluate the in vivo efficacy of a new vaccine candidate protein (EhaF) on methanogenesis and microbial population in the rumen of goats. We amplified the gene mru 1407 encoding protein EhaF using fresh...

Context Beef cattle feed efficiency is challenged in northern Australian production systems due to the limited dietary protein, leading changes rumen bacterial populations and fermentation outcomes. Aims Two types of diets with different protein contents were used evaluate composition diversity, aiming correlate parameters. Methods In total, 90 Brahman steers (341 ± 45 kg BW) selected for this ...

First described in 1843, Rumen protozoa with their striking appearance were assumed to be important for the welfare of their host. However, despite contributing up to 50% of the bio-mass in the rumen, the role of protozoa in rumen microbial ecosystem remains unclear. Phylogenetic analysis of 18S rDNA libraries generated from the rumen of cattle, sheep, and goats has revealed an unexpected diver...

Two Latin square design experiments investigated the relationship between hydrogen sulphide concentration in the rumen headspace gas of dairy cows and the early stages of protein degradation in the rumen. In Expt 1, three protein sources differing in rumen N (nitrogen) degradability (maize gluten feed (MGF); sunflower meal (SFM); and soyabean meal (SBM)) were used, whereas in Expt 2 four differ...

Three Holstein steer calves (179 kg) were fitted with reentrant cannulas at the proximal duodenum. The animals were used in a series of metabolism experiments designed to measure duodenal passage of nonammonia and nonmicrobial N, and to evaluate the extent of degradation of supplemental protein within the rumen. When casein-, soybean meal-, cottonseed mealand corn gluten meal-supplemented diets...

animal agricultural production systems are major sources of nonpoint pollution affecting quality of water sources. nitrogen has been identified as the foremost source of nonpoint water pollution  and the potential negative impacts of n have become an area of public concern. protein degradation from feed ingredients is an important factorinfluencing aa supply to the duodenum. ruminal proteolysis...