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Full-Text Articles in Life Sciences

Effects Of Wet Corn Gluten Feed And Dietary Particlesize On Ruminal Fermentation And Milk Production (2010), M.L. Sullivan, Barry J. Bradford Jan 2010

Effects Of Wet Corn Gluten Feed And Dietary Particlesize On Ruminal Fermentation And Milk Production (2010), M.L. Sullivan, Barry J. Bradford

Kansas Agricultural Experiment Station Research Reports

Wet corn gluten feed (WCGF) was included in 4 diets at 0, 11, 23, and 34% of diet dry matter. Alfalfa hay was used to maintain at least 10% of particles ≥0.71 inches in length (the top screen of the Penn State Particle Separator) in all diets. Ruminal probes were placed in the rumens of 7 ruminally cannulated lactating Holstein dairy cows to measure ruminal pH. As WCGF increased in the diet, dry matter intake and milk production increased quadratically with 23% WCGF supporting the highest feed intake and milk yield. Ruminal pH and milk fat content were similar across …


Effects Of Varying Rates Of Tallgrass Prairie Hay And Wet Corn Gluten Feed On Productivity Of Dairy Cows (2010), D.J. Rezac, K.N. Grigsby, Barry J. Bradford Jan 2010

Effects Of Varying Rates Of Tallgrass Prairie Hay And Wet Corn Gluten Feed On Productivity Of Dairy Cows (2010), D.J. Rezac, K.N. Grigsby, Barry J. Bradford

Kansas Agricultural Experiment Station Research Reports

Productivity of lactating dairy cows was assessed when fed diets containing wet corn gluten feed (WCGF; Sweet Bran, Cargill Inc.) as the primary energy substrate and prairie hay as the primary source of physically effective neutral detergent fiber (peNDF) compared with a control diet. Treatment diets were: 1) a control diet with 18% alfalfa, 18% corn silage, 33% WCGF, and 15% forage NDF (CON); 2) a diet with 20% tallgrass prairie hay, 46% WCGF, and 13% forage NDF (TPH20); and 3) a diet with 14% tallgrass prairie hay, 56% WCGF, and 9% forage NDF (TPH14). Midway through period 2, the …


Bioavailability Of Lysine From Hydroxymethyl Lysine (2010), E.A. Elwakeel, Evan C. Titgemeyer, D.W. Brake, A.M. Nour Jan 2010

Bioavailability Of Lysine From Hydroxymethyl Lysine (2010), E.A. Elwakeel, Evan C. Titgemeyer, D.W. Brake, A.M. Nour

Kansas Agricultural Experiment Station Research Reports

Twelve mature sheep were used as a ruminant model to estimate the bioavailability of lysine in hydroxymethyl lysine (HML) compared with a commercial product of rumen-protected lysine (RPL; LysiPEARL, Kemin Industries, Inc.) with known availability. The sheep were fed a diet with a forage to concentrate ratio similar to that of dairy diets. Following a control period in which plasma lysine was measured when sheep received no supplemental lysine, the sheep were provided 2 of 4 treatments during periods 2 and 3; treatments included RPL to provide 3 or 6 g/day of available lysine (actual amounts of product provided were …


Ovarian Characteristics, Serum Hormoneconcentrations, And Fertility In Lactating Dairy Cows Inresponse To Equine Chorionic Gonadotropin (2010), Stephanie Leeann Pulley, L.D. Wallace, H.I. Mellieon, Jeffrey S. Stevenson Jan 2010

Ovarian Characteristics, Serum Hormoneconcentrations, And Fertility In Lactating Dairy Cows Inresponse To Equine Chorionic Gonadotropin (2010), Stephanie Leeann Pulley, L.D. Wallace, H.I. Mellieon, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

The objective of this study was to evaluate the effects of equine chorionic gonadotropin (eCG) on various characteristics associated with an effective timed artificial insemination (AI) protocol in lactating dairy cows. Cows (n = 121) in a single herd were treated with 2 injections of prostaglandin F2α(PGF2α) 14 days apart (Presynch), with the second injection administered 11 days before the onset of a timed AI protocol. Cows received either saline or 400 IU eCG concurrent with the PGF2αinjection of the Ovsynch protocol (injection of gonadotropinreleasing hormone or GnRH, 7 days before and 48 to 56 hours after PGF2αwith insemination occurring …


Lysine Degradation By Ruminal Fusobacteriumnecrophorum (2010), E.A. Elwakeel, R.G. Amachawadi, A.M. Nour, M.E. Nassar Jan 2010

Lysine Degradation By Ruminal Fusobacteriumnecrophorum (2010), E.A. Elwakeel, R.G. Amachawadi, A.M. Nour, M.E. Nassar

Kansas Agricultural Experiment Station Research Reports

Three experiments were conducted to characterize lysine fermentation by Fusobacterium necrophorum, a ruminal bacterium that is known to degrade amino acids. In Experiment 1, 7 strains of Fusobacterium necrophorum were inoculated into media containing lysine (50 mM), lactate (50 mM), or lysine plus lactate (50 mM each) as the major energy substrate to evaluate growth and ammonia production. All strains grew with lysine, lactate, or lactate plus lysine as the primary substrate. When grown with lysine, all strains produced ammonia as an end product, even if lactate was also present. Smaller concentrations of ammonia for medium containing lactate plus lysine …