Effects of dairy biomass protein on ruminal fermentation and site and extent of nutrient digestion by lambs.

摘要: Twelve ruminally and abomasally cannulated lambs (27 +/- 1.16 kg) 16 intact (28 1.49 were used in two trials to study the influence of dairy biomass (a cheese processing wash water sludge) as a protein source medium-concentrate diets. In Trials 1 2, assigned one three concentrate diets containing 0, 10 or 20% with an additional positive control diet Trial 2. Biomass provided 27.4 52.7% CP treatments, respectively. Diets similar N content fed at 3.5% initial BW (as fed). Apparent ruminal OM digestibilities lower (P less than .10) receiving 0 10% biomass. Postruminal digestibility was higher for both reduced compared other treatments. Plasma urea concentration (mg/dl) 3 9 h after feeding lambs. Although retention unchanged, fecal excretion urinary consuming Non-ammonia feed flow (g/d) abomasal contents vs dietary treatments but decreased. conclusion, decreased site digestion altered by