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Animal Sciences

1976

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Preheating Ventilating Air With Solar Energy (1976), C K. Spillman, F V. Robbins, B A. Koch Jan 1976

Preheating Ventilating Air With Solar Energy (1976), C K. Spillman, F V. Robbins, B A. Koch

Kansas Agricultural Experiment Station Research Reports

When animals are confined inside buildings, ventilating air is required to remove moisture and odors. Young animals require relatively warm temperatures and do not produce enough heat to offset that lost through walls and to warm ventilating air. Supplemental heat required by young animals does not need to be high quality, and heating the air a few degrees is adequate for much of the fall, winter, and spring. For example, assume that a 26-sow, farrowing house has a 500 cfm fan. Current recommendations are to run that size fan continuously during the winter. If the ventilating air is heated 30 …


Effects On Profits And Risks Of Hedging Hogs In The Futures Market (1976), J H. Mccoy, R V. Price, R E. Solomon Jan 1976

Effects On Profits And Risks Of Hedging Hogs In The Futures Market (1976), J H. Mccoy, R V. Price, R E. Solomon

Kansas Agricultural Experiment Station Research Reports

Erratic hog prices in recent years have compounded management problems. As a result, interest has increased in ways of tying down prices before the hogs are ready for market. This report presents results of a study of one approach to the problem -- hedging in the futures market.; Swine Day, Manhattan, KS, November 11, 1976


Correlations For Performance Traits Of Growing Boars (1976), P B. Conley Iii, T W. Orwig, Robert H. Hines Jan 1976

Correlations For Performance Traits Of Growing Boars (1976), P B. Conley Iii, T W. Orwig, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Performance records of 275 boars, beginning at 65 and ending at 250 lbs., were analyzed to determine correlations of performance traits. Fastest growing boars were more efficient (r=-.49). In addition, faster gaining boars also tended to have more backfat (r=.20). Backfat thickness and feed efficiency were not related (r=.0l). Average daily gain from 65 to 220 lbs. was highly correlated with average daily gain from 65 to 250 lbs. (r=.92), which suggests that boars need not be tested to heavier weights. The feed/gain ratios during both test periods likewise were highly correlated (r=.82).; Swine Day, Manhattan, KS, November 11, 1976


Comparison Of Feed Consumption Of Pigs In Two Lines (1976), J D. Wheat, Donald H. Kropf, Robert H. Hines Jan 1976

Comparison Of Feed Consumption Of Pigs In Two Lines (1976), J D. Wheat, Donald H. Kropf, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Pigs in the control line ate more, grew faster, and were less efficient than those in the select line.; Swine Day, Manhattan, KS, November 11, 1976


Flavor Enhancers In Growing-Pig Rations (1976), B A. Koch, G L. Allee, Robert H. Hines Jan 1976

Flavor Enhancers In Growing-Pig Rations (1976), B A. Koch, G L. Allee, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Groups of growing pigs restricted to control feed or feed containing one of 5 commercial flavoring agents or taste enhancers consumed similar amounts of feed and made similar weight gains and similar feed/gain.; Swine Day, Manhattan, KS, November 11, 1976


Evaluation Of Antibacterial Preparations On Growth Rate And Feed Efficiency Of Young Pigs (1976), G L. Allee, B A. Koch, Robert H. Hines Jan 1976

Evaluation Of Antibacterial Preparations On Growth Rate And Feed Efficiency Of Young Pigs (1976), G L. Allee, B A. Koch, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Ninety-six young pigs were used to evaluate various antibacterial preparations on rate and efficiency of gain. Each of the antibacterial preparations increased rate of gain over pigs fed the non-medicated basal diet. There were no significant differences in daily gains of pigs fed ASP-250, CSP-250, Lincomix, Mecadox, or Stafac.; Swine Day, Manhattan, KS, November 11, 1976


Effects Of Fat Level And Calorie-Protein Ratio On Performance Of Finishing Pigs (1976), G L. Allee Jan 1976

Effects Of Fat Level And Calorie-Protein Ratio On Performance Of Finishing Pigs (1976), G L. Allee

Kansas Agricultural Experiment Station Research Reports

One hundred twenty finishing pigs averaging 52.9 kg (116 lbs.) initially were used to study effects of fat level and calorie-protein (C:P) ratio on performance and carcass traits of pigs fed a sorghum-soybean meal basal ration. The basal ration contained 13.1% crude protein, 0.55% lysine, 0.68% calcium and 0.59% phosphorus. Fat (tallow) was added to the basal ration at the expense of sorghum at 0, 3, 6, and 9% while maintaining a constant C:P ratio. Also, 9% fat was added to the basal ration without adjusting the C:P ratio. With a constant C:P ratio, daily gain and feed efficiency were …


Effects Of Processing Methods On The Nutritional Value Of Sorghum For Weaned Pigs (1976), G L. Allee Jan 1976

Effects Of Processing Methods On The Nutritional Value Of Sorghum For Weaned Pigs (1976), G L. Allee

Kansas Agricultural Experiment Station Research Reports

One hundred twenty-six weaned, crossbred pigs averaging 14 kg (31 lbs.) initially were used to evaluate the effects of various methods of processing sorghum grain. Processing methods evaluated were: pelleting, extruding, micronizing, high-moisture grain stored in an oxygen limiting structure, and high-moisture grain treated with propionic acid. Except for pelleting, only the grain (sorghum) was exposed to the various processing methods. After being processed, the sorghum was ground and incorporated into a 18% sorghum-soybean meal diet. None of the processing methods increased weight gain of weaned pigs over that by pigs fed the control diet (ground sorghum fed as a …


Femur Or Phalange Bones As Indicators Of Dietary Phosphorus Deficiency (1976), J Hsu, G L. Allee, B A. Koch Jan 1976

Femur Or Phalange Bones As Indicators Of Dietary Phosphorus Deficiency (1976), J Hsu, G L. Allee, B A. Koch

Kansas Agricultural Experiment Station Research Reports

Fifteen crossbred gilts averaging 115 pounds were fed one of three phosphorus levels 70 days (to 219 pounds average) then their femur and phalange bones were compared. Each group of five gilts had received either 0.40%, 0.50% or 0.60% total dietary phosphorus and 0.65% dietary calcium during the 70-day feeding period. The basal sorghum-soybean meal ration contained 0.30% of plant phosphorus. Specific gravity and X-ray or chemical analysis of femurs showed no significant differences among groups, but the breaking strength of femurs from gilts fed 0.6% phosphorus was significantly higher than that from gilts fed 0.4% phosphorus. Femur and phalange …


High-Moisture Sorghum For Growing-Finishing Swine (1976), M Trotter, G L. Allee Jan 1976

High-Moisture Sorghum For Growing-Finishing Swine (1976), M Trotter, G L. Allee

Kansas Agricultural Experiment Station Research Reports

Eighty-seven crossbred pigs (averaging 95 pounds initially) were used to compare the value of sorghum grain harvested with high-moisture and stored in an oxygen-limiting structure with that harvested with high-moisture and treated with propionic acid (1.2%), and stored in a metal bin, or field dried. Average daily gain, average daily feed intake, and feed/gain ratios in a growth trial and protein and energy digestibilities in a digestion trial, showed that high-moisture sorghum grain and field-dried sorghum have equal feeding values when compared on a dry-matter basis.; Swine Day, Manhattan, KS, November 11, 1976


Acid-Treated High-Moisture Sorghum For Swine (1976), G L. Allee, R Nelson Jan 1976

Acid-Treated High-Moisture Sorghum For Swine (1976), G L. Allee, R Nelson

Kansas Agricultural Experiment Station Research Reports

Three trials involving 166 growing pigs (initial weight 20.5 pounds) and 96 finishing pigs (initial weight 108.7 pounds) were conducted to investigate effects of feeding high-moisture, acid-treated sorghum to swine. Sorghum harvested at 23% moisture was treated with 1.2% propionic acid. Method of processing (whole or ground) and method of feeding (complete or free-choice) were also evaluated. Pigs fed high-moisture, acid-treated sorghum in a complete ration gained at the same rate and just as efficiently as pigs fed the dry, complete ration. Feeding of supplement free-choice tended to reduce daily gain but not feed efficiency. Finishing pigs fed whole, high-moisture, …