Two grazing trials utilizing individually supplemented yearling steers were conducted to study the effect of supplemental escape protein on steer performance during the active growth periods, spring and fall, of smooth brome (Bromus inermis). Graded levels (0, .11, .23 and .34 kg.head-1.d-1) of an equal-protein-basis mixture of bloodmeal and corn gluten meal were offered daily, replacing corn s...

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 ...

Four Holstein steers (282 kg) with cannulas in the rumen and proximal duodenum were used in a 4 x 4 Latin square experiment to evaluate the influence of dietary urea level (0, 0.4, 0.8, and 1.2%, DM basis) in a steam-flaked barley-based finishing diet on digestive function. There were no treatment effects (P > 0.20) on ruminal digestion of OM and ADF. Increasing dietary urea level increased (li...

Rustomo, B., AlZahal, O., Cant, J. P., Fan, M. Z., Duffield, T. F., Odongo, N. E. and McBride, B. W. 2006. Acidogenic value of feeds. II. Effects of rumen acid load from feeds on dry matter intake, ruminal pH, fibre degradability and milk production in the lactating dairy cow. Can. J. Anim. Sci. 86: 119–126. The previous study evaluated the acidogenic value (AV) of a series of feeds. The object...

this research was conducted to evaluate the effects of electron beam (eb) and gamma ray (gr) radiations at doses of 25, 50 and 75 kgy on ruminal degradation kinetics of dry matter (dm) and crude protein (cp),andin vitro digestibility of canola meal (cm). the nylon bag technique and in vitro two step method were used for this aim. gr decreased ruminal degradability of dm (p<0.05), but eb had no ...

Microbial protein synthesis in the rumen would be optimized when dietary carbohydrates and proteins have synchronized rates and extent of degradation. The aim of this study was to evaluate the effect of varying ruminal degradation rate of energy and nitrogen sources on intake, nitrogen balance, microbial protein yield, and kinetics of nutrients in the rumen of growing kids. Eight Boer goats (38...

Twenty-five wether lambs (34 +/- 0.9 kg) fitted with ruminal and abomasal infusion catheters were used in a completely randomized design to determine the effects of differing proportions of ruminal and abomasal casein infusion on N balance in lambs fed a high-concentrate diet (85% corn grain, 1.6% N; DM basis) for ad libitum intake. Wethers were infused with 0 (control) or 10.4 g/d of N from ca...