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Evaluation Of 1996 Nrc For Protein And Phosphorus Requirements Of Finishing Cattle, Galen E. Erickson, Todd Milton, Terry J. Klopfenstein
Evaluation Of 1996 Nrc For Protein And Phosphorus Requirements Of Finishing Cattle, Galen E. Erickson, Todd Milton, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
Two trials were conducted to evaluate the 1996 Beef NRC computer model for protein and phosphorus requirements of feedlot cattle. The control ration was formulated for the same levels of crude protein (13.5%) and phosphorus (0.35%) in both trials; however, supplemental protein was from urea in Trial 1 and urea, feather meal and blood meal in Trial 2. The balanced ration was formulated utilizing the 1996 NRC. The balanced ration was changed to effectively meet the changing requirements for DIP, UIP and P. In Trial 1, gains and efficiencies were similar between treatments; however, DMI was lower with cattle fed …
Regulation Of Lh Secretion By Progesterone In Heifers, Karol Fike, Brad Lindsey, Ellen G. M. Bergfeld, Freddie Kojima, Jorge Quintal, Eraldo Zanella, Eric Melvin, Michael Wehrman, James E. Kinder
Regulation Of Lh Secretion By Progesterone In Heifers, Karol Fike, Brad Lindsey, Ellen G. M. Bergfeld, Freddie Kojima, Jorge Quintal, Eraldo Zanella, Eric Melvin, Michael Wehrman, James E. Kinder
Nebraska Beef Cattle Reports
Heifers experienced either a: 1) large magnitude of change in progesterone; 2) medium magnitude of change in progesterone; or 3) small magnitude of change in progesterone. During the 24 hours following the progesterone shift, heifers with the large magnitude progesterone shift had a greater LH pulse frequency than heifers with a medium or small magnitude of shift in progesterone. Despite the large or medium magnitude progesterone shift, LH pulse frequency did not differ from heifers in which a small change in progesterone occurred. We conclude that amount of progesterone in circulation is more important in regulation of LH secretion than …
Solvent-Extracted Germ Meal For Receiving Calves, Daniel Herold, Mark Klemesrud, Terry J. Klopfenstein, Todd Milton, Rick Stock
Solvent-Extracted Germ Meal For Receiving Calves, Daniel Herold, Mark Klemesrud, Terry J. Klopfenstein, Todd Milton, Rick Stock
Nebraska Beef Cattle Reports
This study evaluated solvent-extracted germ meal as a dietary ingredient for receiving calves. Treatments were 7% of dry matter as either corn bran or solvent-extracted germ meal in 55% concentrate diets. Average daily gain, dry matter intake and feed to gain ratio were not influenced by treatment. Dry matter offered for the first 7 days calves were in the feedlot also did not differ due to treatment. Both dry matter consumption and calf performance indicated solvent-extracted germ meal can replace up to 7% corn bran in the diet without influencing either dry matter intake or performance.
Feather Meal As A Source Of Sulfur Amino Acids For Growing Steers, Mark Klemesrud, Terry J. Klopfenstein
Feather Meal As A Source Of Sulfur Amino Acids For Growing Steers, Mark Klemesrud, Terry J. Klopfenstein
Nebraska Beef Cattle Reports
One-hundred twenty individually fed steer calves were used to evaluate feather meal as a source of sulfur amino acids. Treatment proteins included a urea control and meat and bone meal (6.4% of dietary DM) plus 0, 1, or 2% feather meal with incremental levels of rumen protected methionine. Adding feather meal to meat and bone meal resulted in a linear increase in gain. Likewise, rumen-protected methionine also improved gain. These results indicate feather meal can provide a portion of the sulfur amino acids lacking in meat and bone meal. However, additional methionine may further improve performance.
Use Of The Nrc Model For Evaluating Nutrient Balances Of Grazing Beef Cattle, Greg Lardy, Don C. Adams, Terry J. Klopfenstein, Dennis R. Brink
Use Of The Nrc Model For Evaluating Nutrient Balances Of Grazing Beef Cattle, Greg Lardy, Don C. Adams, Terry J. Klopfenstein, Dennis R. Brink
Nebraska Beef Cattle Reports
Research conducted at the Gudmundsen Sandhills Laboratory evaluated the National Research Council Beef Cattle Nutrient Requirements Model. Equations describing seasonal variability in CP, IVOMD, escape protein and degradable intake protein of native Sandhills range and subirrigated meadow were developed. Estimates of TDN and protein degradability for feedstuffs commonly used by Nebraska cow-calf producers are given. The NRC Model generally predicted nutrient balances in agreement with research trials. Microbial efficiency is lower for less-digestible forages. The NRC model is useful for evaluating grazed diets when accurate estimates of protein degradability, digestibility and intake are available.
Lipid Sources In Finishing Diets For Yearling Steers, Ivan G. Rush, Burt Weichenthal, Brad Van Pelt
Lipid Sources In Finishing Diets For Yearling Steers, Ivan G. Rush, Burt Weichenthal, Brad Van Pelt
Nebraska Beef Cattle Reports
Adding Synergy2 to a corn-based finishing diet to provide 1.12% lipid did not significantly increase steer performance in this trial or in pooled results between this trial and one reported in 1995. However, numerical increases were observed in daily gain and feed dry matter intake for Synergy when compared to control values. Pooled results for additions of pork fat (white grease) to provide 1.12 or 2.24% lipid were intermediate to those for the control and Synergy treatments. Any performance benefit attributed to Synergy may be as much from its effect on dry matter intake as it is from nutrient …
An Enzyme-Microbial Feed Product For Finishing Steers, Burt Weichenthal, Ivan G. Rush, Brad Van Pelt
An Enzyme-Microbial Feed Product For Finishing Steers, Burt Weichenthal, Ivan G. Rush, Brad Van Pelt
Nebraska Beef Cattle Reports
Feeding MSE (multiple stabilized enzymes in an enzyme-microbial feed product) at the rate of 2 lb of product per ton of diet dry matter in two trials with finishing yearling steers, increased daily gain by an average of 6.9% over feeding Rumensin-Tylan at 29 g and 10 g per ton, respectively. Feed-to-gain ratio was improved by an average of 5.6% with MSE in the same comparison. Carcass measurements were similar, except for slight increases in hot carcass weight and dressing percent for cattle fed MSE. Percentages of liver abscesses were low and similar for both treatments.