Nutritional value of anaerobically fermented beef cattle wastes as a feed ingredient for livestock: Growth and carcass traits of beef cattle and sheep fed fermentor biomass

Rumen Fermentation Characteristics, Nitrogen Balance and Growth in Lambs Fed Methane Digester Effluent

“…Lambs offered the SBM diet digested more N/d (5.8) compared with lambs fed the other diets, which were similar (3.3, 3.8 and 3.7 g/d for urea, MDE and DWG diets, respectively). Prior et al (1980) also found lower N balance and digestibility with lambs offered MDE compared with lambs offered SBM.…”

“…In the current study the nutrient availability was similar for both N sources. There were no interactions among main effects for ruminal variables or plasma urea-N (table 5) and no differences were detected for source of supplemental N. Prior et al (1980) reported lower VFA concentrations throughout the day for Iambs offered MDE compared with SBM, which may be attributed to the lower energy value of MDE in comparison with soybean meal. Of the major VFA measured in the current study, only isovaleric acid concentration was lower (P<.05) for ensiled diets (.22 mmol/dl) compared with diets fed fresh (1.50 mmol/dl).…”

“…Feed to gain ratio was poorest for urea and MDE (9.2 and 7.9) and best for DWG and SBM (5.5 and 7.0). Prior et al (1980) reported a lower rate and efficiency of gain for lambs fed MDE compared with SBM. The faster daily gains and the reduction in N required for gain of lambs fed DWG in the current study may be attributed to both an increase in N intake and energy as well as an increase in tureen-escape protein presented to the small intestine when compared with urea and MDE (Klopfenstein et al, 1978).…”

Nutritive Evaluation of Protein from Anaerobically Digested Poultry Wastes as a Dietary Ingredient Replacer for Channel Catfish, Ictalurus punctatus

“…Paredes et al (1994) evaluated the nutritional quality of microbial biomass from anaerobic digestion of corn processing and observed that 20% of this product can be added as a source of protein to balance feed based on soy and fishmeal for carp. Prior et al (1986) reported no negative effect on overall weight gain of steers and carcass‐quality or taste panel evaluation of steaks from steers fed anaerobically fermented beef cattle wastes. A substitution of 20% anaerobically digested piggery waste for conventional materials (soybean meal and fish meal) did not adversely affect growth performance of Cyprinus carpio (Watson 1985).…”

“…The anaerobic thermophilic digestion process converts organic materials into usable by‐products such as biogas (Safley et al 1987), single cell proteins (microbial biomass) (Stafford et al 1979), feather‐lysate (Shih 1993), and dried digester sludge in the settlement (Steinsberger et al 1987). The digestion by‐product has been successfully used for animal production if utilized either alone or in combination with other feed ingredients (Watson 1985; Prior et al 1986; Chaudhry et al 1993; Paredes et al 1994; Jalil et al 2001). Paredes et al (1994) evaluated the nutritional quality of microbial biomass from anaerobic digestion of corn processing and observed that 20% of this product can be added as a source of protein to balance feed based on soy and fishmeal for carp.…”