The objectives of this study were to expand the database and determine the intestinal digestibility of rumen undegradable protein (dRUP) of common dairy feeds and to determine the effects of feeding 37.9% wet corn gluten feed on these estimates. Two ruminally and duodenally fistulated steers were assigned randomly to a crossover design with 4-wk periods. The mobile bag technique was used to det...

Sex-separate male and female broilers (2,592 broilers; Ross x 708) were placed in 144 floor pens (12 replications per treatment) and fed diets containing high (H) and moderate (M) amino acid density from 1 to 55 d of age. Diets were formulated using ileal digestible amino acid ratios to Lys. Six dietary treatment combinations (MMMMM, HMMMM, HHMMM, HHHMM, HHHHM, and HHHHH) were implemented in 5 ...

Previous results indicated that performance of chicks fed a high level (10%) of poultry by-product meal(PBM) was lower than performance of chicks fed a corn-soybean meal (SBM) diet. The latter difference was hypothesized to be due to variation in digestible amino acid (AA) levels among the diets. This study evaluated diets containing PBM formulated on equivalent total AA basis vs. an equivalent...

An experiment was conducted to determine the relationship between in vitro assays to estimate quality and ileal nutrient and energy digestibility of various corn sources. Twelve samples of corn were analyzed for gross energy (GE), N, moisture, crude fat (CF), salt-soluble protein content (SSP), and vitreousness. Six of the 12 sources of corn had similar proximate composition but ranged in pairs...

This study was conducted to investigate the effects of corn addition to Italian ryegrass (IRG) (Lolium multi ̄orum Lam.) on rumen environment, nutrient digestibility, methane production and energy and nitrogen utilization by goats at two intake levels. Eight castrated Japanese goats were employed in two sequential digestion and metabolism trials. The goats were divided into two groups, offered t...

[1] Measurements of nitrogen and phosphorus (N and P) concentrations from previously unstudied streams and rivers throughout west Siberia suggest that climate warming and/or associated permafrost thaw will likely amplify the transport of N and P to the Kara Sea and adjacent Arctic Ocean. We present concentrations of dissolved organic nitrogen (DON), ammonium (NH4-N), nitrate (NO3-N), total diss...

methane is one of the important greenhouse gases that contribute to a rise in global mean surface temperature. aquatic environments are postulated to contribute > 50% of the total global methane (ch4) flux to the atmosphere (de angelis and lilley, 1987). dissolved methane concentration in surface waters was measured from january to december 2008 at two selected sites upper reaches (ongc bridge)...

Whilst herbage grasses and legumes are grown primarily to provide digestible energy and other nutrients for farm livestock, plant breeders have tended to concentrate on total or seasonal yield of DM, i.e. on the maximum fixation of energy by the crop, with any assessment of its nutritive value being left to a later stage of evaluation. In terms of providing the maximum amount of utilizable ener...