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1978

Kansas Agricultural Experiment Station Research Reports

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Full-Text Articles in Life Sciences

Effects Of Soybean Oil And Corn Oil Alone Or In Combination With Rumensin®, On Methane And Vfa Production, In Vitro, Jack G. Riley, S.L. Newby Jan 1978

Effects Of Soybean Oil And Corn Oil Alone Or In Combination With Rumensin®, On Methane And Vfa Production, In Vitro, Jack G. Riley, S.L. Newby

Kansas Agricultural Experiment Station Research Reports

Soybean oil or corn oil when fed at 0, 2, 4, or 6% of the ration did not significantly reduce methane production or alter the ratios of volatile fatty acids. Soybean oil was superior to corn oil in reducing methane, and soybean oil, produced a more desirable acetate:propionate ratio. Rumensin was compared at levels simulating 0, 15, and 30 grams per ton of complete ration. Rumensin at either concentration significantly reduced methane and significantly improved the acetate:propionate ratio.

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Effects On Carcass Traits Of Beef Ration Energy Level And Length Of Feeding, Dell M. Allen, Melvin C. Hunt, Donald H. Kropf, A.R. Harrison, B.E. Brent, Jack G. Riley, Curtis L. Kastner Jan 1978

Effects On Carcass Traits Of Beef Ration Energy Level And Length Of Feeding, Dell M. Allen, Melvin C. Hunt, Donald H. Kropf, A.R. Harrison, B.E. Brent, Jack G. Riley, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

We used 150 Angus yearling steers of similar background from the Livestock and Meat Industry Council cattle-flow project. Each was assigned to one of the 12 treatments (10 per treatment) involving low-, medium-, and high-energy rations (calculation to supply 34, 45, and 58 megacalories per 100 lbs. ration for net energy of production). Times on rations were 56, 91, 119, 147, and 175 days. Ten steers were fed a submaintenance ration of prairie hay 28 days before slaughter, and 10 served as controls (slaughtered when study started).

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Carcass Characteristics, Palatability, And Shelf Life Of Beef Finished On Selected Feeding Regimes, Dell M. Allen, Melvin C. Hunt, Donald H. Kropf, V. Chen, O. Corte, G.H. Gutowski, A.R. Harrison, C. Kuntapanit, J.D. Thomas, M.E. Mccurry (Smith) Jan 1978

Carcass Characteristics, Palatability, And Shelf Life Of Beef Finished On Selected Feeding Regimes, Dell M. Allen, Melvin C. Hunt, Donald H. Kropf, V. Chen, O. Corte, G.H. Gutowski, A.R. Harrison, C. Kuntapanit, J.D. Thomas, M.E. Mccurry (Smith)

Kansas Agricultural Experiment Station Research Reports

This report terminates a 3-year study and includes data from this past year. Previous results were reported in the 1976 and '77 Cattlemen's Day Report.

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Predicting Cattle Performance From Mathematical Models, B.E. Brent, A. Chestnut, P. George Jan 1978

Predicting Cattle Performance From Mathematical Models, B.E. Brent, A. Chestnut, P. George

Kansas Agricultural Experiment Station Research Reports

Tables based on a mathematical model are presented that allow cost of gains by steers at various weights to be calculated. An example illustrate how to use the tables to help with economic decisions.

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The Concept Of Adjusting Energy Level In Maintenance Rations For Cold Weather, D.R. Ames Jan 1978

The Concept Of Adjusting Energy Level In Maintenance Rations For Cold Weather, D.R. Ames

Kansas Agricultural Experiment Station Research Reports

Nutrient requirements for domestic animals (NRC) published by the National Research Council are the best estimates available. For beef cattle, specific tables are listed for animals of different weights and for various stages of the production cycle. Although these values are useful for many situations, there are instances when they should be adjusted. One needed adjustment is energy requirement for maintenance when cattle are exposed to cold and rate of heat production must increase to compensate for increased heat loss. The two factors that determine the rate of heat loss are: (1) the differences between body temperature and environmental temperature, …

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Myoclonia Congenita (Trembling Piglets) (1978), H W. Leipold, R Scarsi, D Schoneweis, R Milleret, R Phillips Jan 1978

Myoclonia Congenita (Trembling Piglets) (1978), H W. Leipold, R Scarsi, D Schoneweis, R Milleret, R Phillips

Kansas Agricultural Experiment Station Research Reports

An epidemiologic survey was conducted on ten swine farms in Kansas and two in Nebraska (1878 piglets in 251 litters) to determine the incidence, clinical signs, and cause of myoclonia corrgenita. The percentage of litters with myoclonia congenita was 37.45%, ranging from 4.35% to 100%. Morbidity rate was 37.5%, which is lower than rates in previous surveys in the United States. Mortality rate in all pigs was 17.73% while the fatality rate of affected pigs was 47.2%.; Swine Day, Manhattan, KS, November 9, 1978

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Arthrogryposis In Piglets (1978), H W. Leipold, R Ely, D Schoneweis Jan 1978

Arthrogryposis In Piglets (1978), H W. Leipold, R Ely, D Schoneweis

Kansas Agricultural Experiment Station Research Reports

This report documents experimental reproduction of tetramelic arthrogryposis in purebred Yorkshire swine by breeding trials. Data from the trials indigated arthrogryposis may be due to homozygosity of a simple autosomal recessive gene. No affected pig was observed to be alive at parturition, although most had been alive in utero just prior to delivery. Other than dystocia observed in the sows, no other significant clinical findings were noted. The condition was noted in five litters from two sows which were bred to the same boar. Approximately 25% of the pigs exhibited the clinical signs of arthrogryposis which included malformed rigidly extended …

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Evaporative Cooling Systems For Swine (1978), D R. Ames, David A. Nichols, Robert H. Hines Jan 1978

Evaporative Cooling Systems For Swine (1978), D R. Ames, David A. Nichols, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

During heat stress swine must rely an evaporation as a mechanism for heat loss. Providing water via sprinklers, showers, and foggers is a practical method of reducing heat stress. It is imperative in any evaporative system that animals are permitted to dry, because the evaporation of water is fundamental to evaporative cooling. Ideally, hogs should be wetted and then given time to dry, followed by successive wetting and drying. Studies are under way to investigate various systems of wetting hogs to take maximum advantage of evaporative cooling.; Swine Day, Manhattan, KS, November 9, 1978

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Selection For Muscling In Durocs (1978), J D. Wheat, Donald H. Kropf, P Na-Lampang, Robert H. Hines Jan 1978

Selection For Muscling In Durocs (1978), J D. Wheat, Donald H. Kropf, P Na-Lampang, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Select line pigs were compared with those in the control line for growth patterns, production traits, and carcass quality. Heritability and genetic correlations were calculated for certain production and carcass traits after five generations of selection.; Swine Day, Manhattan, KS, November 9, 1978

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Effect Of Adding Fat To Diets During Late Gestation And Lactation (1978), G L. Allee, J Salava Jan 1978

Effect Of Adding Fat To Diets During Late Gestation And Lactation (1978), G L. Allee, J Salava

Kansas Agricultural Experiment Station Research Reports

Recent research at the University of Nebraska suggest that feeding sows high level of fat (15-20%) during late gestation and lactation may increase energy stores in the newborn pig and increase their survival. Adding fat to sows diets increases the fat content of the milk and therefore increases its energy content. The present studies were conducted to evaluate the effect of feeding 6% fat to sows and gilts during late gestation and lactation on pig survival and performance from birth to weaning (14 or 21 days).; Swine Day, Manhattan, KS, November 9, 1978

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Teat Necrosis In Newborn Gilts (1978), D A. Schoneweis Jan 1978

Teat Necrosis In Newborn Gilts (1978), D A. Schoneweis

Kansas Agricultural Experiment Station Research Reports

Marked enlargement and edema of the vulva are often noted in newborn gilts. An accompanying, but less conspicuous, lesion is enlarged, engorged mammary glands. Although not fully understood, the changes are thought to result from increased estrogen in sows before they farrow. The edema of the vulva usually causes no lasting problems but enlarged mammary glands are more susceptible to injury from a rough surface like concrete slats. Such injuries may lead to teat necrosis and fibrosis, which makes nipples appear inverted and they are often nonfunctional when the gilts farrow. The incidence of teat necrosis can be reduced by …

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Evaluation Of A Concentrated Milk Replacer And A Vitamin-Amino Acid-Iron-Electrolyte Supplement On Baby Pig Survival And Performance (1978), D A. Schoneweis, Robert H. Hines Jan 1978

Evaluation Of A Concentrated Milk Replacer And A Vitamin-Amino Acid-Iron-Electrolyte Supplement On Baby Pig Survival And Performance (1978), D A. Schoneweis, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Litters offered a concentrated milk replacer and the vitamin amino acid, iron-electrolyte supplement, weighed the same as control litters at day 10, 14, 21, and 28. Blood analysis revealed no difference in packed cell volume, hemoglobin, or plasma protein between litters offered the supplement and control litters. Survival rate from birth to weaning favored the control litters (93.9 or 85.3%), however all nineteen litters used in this study were healthy with very little scours observed.; Swine Day, Manhattan, KS, November 9, 1978

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Managing The Breeding Herd (1978), Duane L. Davis Jan 1978

Managing The Breeding Herd (1978), Duane L. Davis

Kansas Agricultural Experiment Station Research Reports

Successful swine producers pay careful attention to the breeding herd. The members of our producer panel will present three approaches to managing reproduction. Their ideas are of particular interest since each is a successful manager. This paper will serve as an outline of topics to be discussed. Basically the same problems occur in all common management systems; however, particular problems may be exaggerated under certain conditions. A well-known example is failure of gilts to reach puberty at an acceptable age. While some producers in all types of facilities experience this problem, complaints are considerably more frequent when gilts are bred …

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Modification Of Ksu Swine Finishing Facility Hovers, Floors, Or Supplemental Heat (1978), B A. Koch, G L. Allee, Robert H. Hines Jan 1978

Modification Of Ksu Swine Finishing Facility Hovers, Floors, Or Supplemental Heat (1978), B A. Koch, G L. Allee, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Two trials were conducted to evaluate the benefits of modifying the KSU swine finishing barn by adding hovers, flooring, or both with and without supplemental heat. In trial 1, pigs with no supplemental heat, hover or floor gained significantly poorer than pigs with supplemental heat plus floor, supplemental heat plus hover and floor, or no heat and floor. Pigs with no heat but with hover, floor or both gained similarly with pigs having the benefit of supplemental heat plus modifications. Average daily gain and feed per lb gain were similar for pigs exposed to supplemental heat and those exposed to …

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Effects Of Feeding A Heat Processed, Predigested Liquid Diet To Three-Week Old Weanling Pigs (1978), S F. Binder, E R. Skoch, C W. Deyoe, G L. Allee, Keith C. Behnke Jan 1978

Effects Of Feeding A Heat Processed, Predigested Liquid Diet To Three-Week Old Weanling Pigs (1978), S F. Binder, E R. Skoch, C W. Deyoe, G L. Allee, Keith C. Behnke

Kansas Agricultural Experiment Station Research Reports

One hundred forty, three-week old weanling pigs were used to evaluate the effects of feeding a heat-processed, predigested liquid diet. In Trial I, pigs were randomly allotted to a dry crumbled diet or a processed liquid diet. The basal corn-soybean meal diet contained 20% protein. A preference trial and a digestion trial were also conducted using the same treatments. A second feeding trial was conducted using a basal diet which contained 30% whey. Treatments consisted of a dry meal diet, a dry meal + water diet, and a processed liquid diet.; Swine Day, Manhattan, KS, November 9, 1978

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Effect Of Feeding Oats And Oat Hulls On Performance Of Weanling Pigs (1978), A J. Thulin, G L. Allee, Robert H. Hines Jan 1978

Effect Of Feeding Oats And Oat Hulls On Performance Of Weanling Pigs (1978), A J. Thulin, G L. Allee, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Two hundred twenty-eight Yorkshire pigs, weaned at 5 weeks of age and averaging 8.4 kg. (18.46 lbs) were used to determine how feeding them various levels of oats, oat hulls, and oats plus fat would effect their performance. Adding oats or oat hulls to increase fiber content of the diets resulted in similar rates of gain, even though the diets contained up to 7.3% fiber. Pigs fed a diet containing 7.3% fiber, however had significantly poorer feed efficiency and daily feed intake than pigs fed the other diets tested. Pigs fed diets containing 10%, 20%, 30%, and 40% oats had …

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