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Influence Of Dietary Mp On The Production Rates And N Usage By Steers Fed High Grain Content Diets, R. H. Pritchard, K. W. Bruns, S. J. Bierman
Influence Of Dietary Mp On The Production Rates And N Usage By Steers Fed High Grain Content Diets, R. H. Pritchard, K. W. Bruns, S. J. Bierman
South Dakota Beef Report, 2000
An experiment was conducted to determine if dietary metabolizable protein (MP) could be manipulated to reduce N content of feedlot effluent without compromising production rates in yearling steers fed high grain content diets. Three feeding programs included: LO) 11 % CP fed throughout; HI) 13% CP fed throughout; and LHL) 11 % fed from d 1 to 35, 13% CP (HI) fed d 36 to 94 and 1 1 % CP (LO) fed from d 95 to 1 17. An estradiol-trenbalone acetate implant was administered on d 35. There were 5 pens of 8 steers (BW=7561b) assigned to each treatment. …
Effect Of Supplement Crude Protein Source And Dietary Crude Protein Levels On Feedlot Performance Of Yearling Steers, R. H. Pritchard
Effect Of Supplement Crude Protein Source And Dietary Crude Protein Levels On Feedlot Performance Of Yearling Steers, R. H. Pritchard
South Dakota Beef Report, 1994
The effect of crude protein level and source on production rates of yearling steers was evaluated during an 88-day finishing period. The overall average daily gain of 240 steers implanted with Revalor was 4.35 Ib. Diets were formulated to contain 1 1.25 and 13.5% crude protein. Protein sources included urea, soybean meal, an isonitrogenous blend of blood mealcorn gluten meal (BM-CGM) and dried distillers grains with solubles (DDGS). Increasing dietary crude protein from 11.5 to 13.3% with all urea supplements depressed (P<.05) dry matter intake without compromising average daily gain or feed efficiency. Feeding soybean meal in 1 1 .I % crude protein diets improved the energetic efficiency of steers. The BM-CGM supplement depressed (P<.051 dry matter intake and average daily gain when compared to the 11.5% crude protein soybean meal diet. The 13.6% crude protein diet containing 11 % DDGS and urea supported performance comparable to the 11.1 % soybean meal diet at a lower cost.
Anhydrous Ammonia Or Liquid Supplement Treatment Of Wheat Straw: Demonstration Results, T.B. Goehring, R.H. Pritchard, T. Derr, J. Thelen
Anhydrous Ammonia Or Liquid Supplement Treatment Of Wheat Straw: Demonstration Results, T.B. Goehring, R.H. Pritchard, T. Derr, J. Thelen
South Dakota Beef Report, 1990
The effect of anhydrous ammonia or liquid supplement treatment of wheat straw was evaluated by field demonstration in response to the drought of 1989. Ammoniation of wheat straw increased estimated TDN content by 7.8 percentage points and crude protein by 7 percentage points in comparison with untreated straw. Adding a liquid protein supplement to wheat straw increased estimated TDN content by 1.5 percentage points and crude protein by .6 percentage points. Ammoniation increased the quality of wheat straw to a level comparable to prairie hay. Based on nutrient analysis, the ammoniation procedure was more effective in improving the quality of …
High-Moisture Ear Corn And Corn Silage In Backgrounding Cattle Diets, M.L. Sip, R.H. Pritchard, M.A. Robbins
High-Moisture Ear Corn And Corn Silage In Backgrounding Cattle Diets, M.L. Sip, R.H. Pritchard, M.A. Robbins
South Dakota Beef Report, 1988
One hundred ninety-two Angus x Limousin steer calves (560 lb) were used in an 85-day backgrounding trial. Dietary crude protein levels of 90, 100, 110 and 120% of the NRC factorial equation recommendation were used within ad libitum-fed corn silage diets (CS) arid limit-fed chopped high-moisture ear corn (HMEC) diets. The objective was to determine if optimum dietary crude protein levels differed between these two basal diets when fed at similar levels of a net energy of gain. By design of the experiment, daily dry matter intake of HMEC diets was lower than CS diets (P<.001). ADG was similar across basal diets and feed conversion was improved (P<.001) with HMEC diets. Dietary crude protein level did not affect ADG. Quadratic decreases in the protein efficiency ratio occurred as dietary crude protein Level increased (P<.01). Plasma urea N (PUN) levels were higher in calves fed HMEC diets (P<.05) arid increased quadratically with increasing dietary crude protein level on day 56 (P<.05). This study suggests the NRC factorial equation estimates the gram daily crude protein requirement and can be used without modification to predict dietary crude protein needs of limit-fed feeder calves.
Hydrolyzed Feather Meal As A Protein Supplement For Steer Calves Fed Corn Silage, Rh. Pritchard, R.M. Luther, M.A. Robbins
Hydrolyzed Feather Meal As A Protein Supplement For Steer Calves Fed Corn Silage, Rh. Pritchard, R.M. Luther, M.A. Robbins
South Dakota Beef Report, 1986
Hydrolyzed feather meal (HFM) was evaluated for soybean meal replacement value in corn silage diets fed t o steer calves. One hundred ninety-two steers (692 lb) were fed corn silage diets formulated to contain 11.5% crude protein. Hydrolyzed feather meal was substituted for soybean meal at levels providing 0, 25, 50 or 75% of the supplemental protein. Overall performance for the 98-day feeding trial was as follows: 2.10 lb average daily gain; 17.91 lb/day dry matter (DM) intake and 8.58 DM/gain. Protein supplements had no effect on performance, indicating that cost per unit protein is the primary consideration when formulating …