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Articles 4831 - 4860 of 8049
Full-Text Articles in Entire DC Network
High Protein Oats And Animal Fat In Diets For Growing-Finishing Swine, Richard W. Wahlstrom, George W. Libal
High Protein Oats And Animal Fat In Diets For Growing-Finishing Swine, Richard W. Wahlstrom, George W. Libal
South Dakota Swine Field Day Proceedings and Research Reports, 1975
The objectives of the experiment reported herein were to obtain further information on substituting high lysine oats for corn in swine diets and to evaluate the effect of added energy, in the form of animal fat, to these diets.
Protein Levels In Diets Of Sows During Gestation And Lactation, George W. Libal, Richard W. Wahlstrom
Protein Levels In Diets Of Sows During Gestation And Lactation, George W. Libal, Richard W. Wahlstrom
South Dakota Swine Field Day Proceedings and Research Reports, 1975
Research conducted during the past several years has shown that dietary protein could be reduced in gestation diets without affecting number or size of pigs farrowed. A limited amount of research has also indicated that the protein requirement during lactation may not be as great as previously recommended. However, data are limited on the long time effects during successive reproductive periods, particularly when low protein diets are fed during both the gestation and lactation periods. The North Central Swine Nutrition Research Committee agreed that this was an area where more information was needed and a cooperative project was initiated to …
High And Low Protein In Diets For Growing Pigs, George W. Libal, Steve L. Robbins, Richard W. Wahlstrom
High And Low Protein In Diets For Growing Pigs, George W. Libal, Steve L. Robbins, Richard W. Wahlstrom
South Dakota Swine Field Day Proceedings and Research Reports, 1975
The objective of this experiment was to evaluate two varieties of oats, a high and a low protein oat, when they were fed as the only grain for growing pigs.
Efficiency In Swine Production, L. J. Kortan
Efficiency In Swine Production, L. J. Kortan
South Dakota Swine Field Day Proceedings and Research Reports, 1975
This report details some of the key emphases in the management of swine operations such as: genetic potential, reproductive efficiency, feeding programs, and feed wastage.
Effect Of Calcium And Phosphorus Sources And Levels In Growing-Finishing Swine Diets, Richard W. Wahlstrom, George W. Libal, Alan Vogel
Effect Of Calcium And Phosphorus Sources And Levels In Growing-Finishing Swine Diets, Richard W. Wahlstrom, George W. Libal, Alan Vogel
South Dakota Swine Field Day Proceedings and Research Reports, 1975
A shortage of phosphorus supplements existed in early 1974 and this experiment was conducted to study the effect of supplying all of the supplementary phosphorus in the diet with the use of meat and bone meals containing 4% phosphorus, 8% calcium and 50% protein. Calcium and phosphorus levels were also evaluated using ratios of calcium to phosphorus of 1.2:1, 1:1 and 1:1.25.
Normal Dent, Opaque-2, Double Mutant And Waxy Corn For Early Weaned Pigs, Richard C. Wahlstrom, George W. Libal
Normal Dent, Opaque-2, Double Mutant And Waxy Corn For Early Weaned Pigs, Richard C. Wahlstrom, George W. Libal
South Dakota Swine Field Day Proceedings and Research Reports, 1975
The purpose of this experiment was to evaluate normal dent, opaque-2, double mutant and waxy corn fed in corn-soybean meal diets for early weaned pigs.
Effect Of Supplemental Iron Pig Starter Diets, Richard C. Wahlstrom, George W. Libal, Steven L. Robbins, James L. Girard
Effect Of Supplemental Iron Pig Starter Diets, Richard C. Wahlstrom, George W. Libal, Steven L. Robbins, James L. Girard
South Dakota Swine Field Day Proceedings and Research Reports, 1975
Iron is added to most trace mineral salts and trace mineral mixtures at low levels. However, it has been reported by some swine producers that they obtain better performance of pigs when fed a relatively high level of iron. Therefore, the objective of this experiment was to determine if there was any benefit of adding iron at levels up to 250 ppm on pig growth, feed efficiency or blood parameters.
Effect Of Early Breeding On Reproductive Performance, George W. Libal, Richard C. Wahlstrom
Effect Of Early Breeding On Reproductive Performance, George W. Libal, Richard C. Wahlstrom
South Dakota Swine Field Day Proceedings and Research Reports, 1975
The objectives of the experiment reported herein were to obtain further data on breeding gilts at 6 or 8 months of age and to determine if age of initial breeding has any effect on production of the second litter.
Changes In The South Dakota Egg Law Effective July 1, 1975, Chapter 39-11, Egg And Egg Products, Boyd J. Bonzer
Changes In The South Dakota Egg Law Effective July 1, 1975, Chapter 39-11, Egg And Egg Products, Boyd J. Bonzer
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
No abstract provided.
Flock Record Summary, Phillip E. Plumart, Boyd J. Bonzer
Flock Record Summary, Phillip E. Plumart, Boyd J. Bonzer
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
A computerized flock record keeping system has been in use at South Dakota State University since 1965. A report is computed and published monthly from data received from flockowners. We have usually had 50 to 60 flockowners reporting data. However, in the spring of 1975, participation dropped to about 30 flockowners. The records of those flocks completing their laying cycle during the calendar years of 1969, 1970, 1971, 1972, 1973, 1974 and through June of 1975 are summarized in table 1.
Summary Of Costs And Income Of Layer Flocks On The Sdsu Record Program, Phillip E. Plumart
Summary Of Costs And Income Of Layer Flocks On The Sdsu Record Program, Phillip E. Plumart
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
Summaries of the income and flock performance of all 19 flocks closed on the program for this year are included in A.S. Series No. 75-40 entitled "Flock Record Summary." Only those flocks for which additional records were received will be covered in this report. Eight flockowners cooperating in the South Dakota State University Computerized Flock Record Keeping Program submitted operating costs, fixed costs and hired labor figures after their flocks were closed between July 1, 1974, and June 30, 1975.
Our Studies On Egg Shell Fragility, O. E. Olson, R. A. Nelson, C. W. Carlson
Our Studies On Egg Shell Fragility, O. E. Olson, R. A. Nelson, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
Thin or Improperly formed egg shells cause serious losses to our poultry Industry, and the problem becomes progressively greater during aging of the laying flock. Therefore, the Animal Science and Chemistry Departments are undertaking work to attempt to understand the causes for greater fragility of the eggs of older laying hens and to reduce the problem by removing or alleviating the causes. Since the work has just begun, no results are yet available. The studies to be under taken are outlined below.
Feed Restriction With High And Low Energy And Protein Layer Diets, E. Guenthner, C. W. Carlson
Feed Restriction With High And Low Energy And Protein Layer Diets, E. Guenthner, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
Current reports in the literature Indicate that the feed cost of producing eggs can be reduced by limiting feed Intake. This is true when laying diets of high nutrient density are used and the feed restriction is applied after the flock peaks in production. Previous tests at this station have shown that, under some feed cost situations, lower density diets also can reduce the feed cost of eggs. This experiment tested the effects of restricting both low and high density diets on hen performance.
Low Vs. High Protein Diets For Turkeys, E. Guenthner, C. W. Carlson
Low Vs. High Protein Diets For Turkeys, E. Guenthner, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
Two series of corn-soy diets, one high in protein and energy (HPE) and the other low in protein and intermediate in energy (LPE), were fed to 600 male and 300 female Large White poults. The high protein diets, with supplemental methionine, started at 32% crude protein (CP) and were stepped down at 4-week intervals to 16% CP. The energy values of the HPE diets started at 3150 Cal M.E. per kg and were stepped up to 3525 Cal. The LPE diets, supplemented with methionine and lysine, started with 23% CP and were stepped down to 12% CP. The energy values …
Some Effects Of Source And Amount Of Fat On Serum Cholesterol In Rats, R. A. Nelson, C. W. Carlson
Some Effects Of Source And Amount Of Fat On Serum Cholesterol In Rats, R. A. Nelson, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
Helping people live longer and healthier lives is the goal of many nutritionists. Indicators have shown that the average American life span increased until 1960 and since then has remained on a plateau. There are even predictions for a decrease between 1975 and 1985, blamed primarily on inactivity, smoking, suboptimal nutrition and pollution.
The Fatty Liver Hemorrhagic Syndrome (Flhs), R. A. Nelson, C. W. Carlson
The Fatty Liver Hemorrhagic Syndrome (Flhs), R. A. Nelson, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
Fatty liver hemorrhaglc syndrome (FLHS) has become a major cause of mortality among caged laying hens. It was second (14%) to lymphold leukosls as the cause of death In 1974 among those hens submitted to the diagnostic laboratory from this research station. The problem seems to be Increasing with the Increased use of high energy-low protein layer diets.
Seventh Annual Poultry Field Day, Animal Science Department
Seventh Annual Poultry Field Day, Animal Science Department
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
These are the complete proceedings of the seventh annual Poultry Field Day held on November 6th, 1975 at South Dakota State University.
Amino Acid Additions To A Low Protein Corn-Soy Diet For Egg Production, A. B. Kashani, C. W. Carlson
Amino Acid Additions To A Low Protein Corn-Soy Diet For Egg Production, A. B. Kashani, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
The study to be reported here was conducted to determine if the protein level of layer diets could be lowered from the commonly used 16% level to 12% without reducing the performance of hens. Thirty-six 24-week-old Babcock 300 pullets in groups of six were placed in cages and randomly assigned to each dietary treatment. The formulas for the basal diets are shown in table 1. The first treatment consisted of the 11.8% protein diet with the second treatment containing an additional 0.15% methionine hydroxy analogue. Treatments 3, 4 and 5 were obtained by cumulatively supplementing the diet of the second …
Causes Of Mortality In Poultry Submitted To The Animal Disease Research And Diagnositic Laboratory, July 1974-June 1975, Martin E. Bergeland
Causes Of Mortality In Poultry Submitted To The Animal Disease Research And Diagnositic Laboratory, July 1974-June 1975, Martin E. Bergeland
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
No abstract provided.
Low Protein Pullet Grower Diets And Their Effects On Subseuqnet Reproductive Performance, R. A. Nelson, C. W. Carlson
Low Protein Pullet Grower Diets And Their Effects On Subseuqnet Reproductive Performance, R. A. Nelson, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
Numerous studies, including several at this station, have shown that layer-type pullets can utilize diets as low as 10 or 12/i protein during the growing stage without affecting their subsequent reproductive performance. Past grower studies had been conducted using floor pens with corn-cob litter. A cage growing system was installed in the brooder building during the past year. Since commercial growing of layer-type pullets in cages is now becoming quite common, it was felt that the low protein diets should be tested under these conditions.
Egg Yolk Pigmentation With Dehydrated Alfalfa Meal, Pro-Xan And Xanthophyll-Free Freeze Dried Alfalfa Juice, E. Guenthner, O. E. Olson, C. W. Carlson
Egg Yolk Pigmentation With Dehydrated Alfalfa Meal, Pro-Xan And Xanthophyll-Free Freeze Dried Alfalfa Juice, E. Guenthner, O. E. Olson, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
This study concludes a series of tests in which natural and synthetic materials were used to produce deeply pigmented egg yolk. The most efficient pigmenter used was B-apo 8' carotenoic acid ethyl ester followed by 6-apo 8' carotenal, alfalfa concentrates and meals of alfalfa, corn gluten and marigold petals. In this test pure lutein, dehydrated alfalfa meal and Pro-Xan, an alfalfa concentrate, were used as sources of pigments^. The freeze dried alfalfa juice was tested for its possible effect in enhancing the utilization of pure lutein. Caged hens were depleted of body stored pigments by feeding an essentially pigment free, …
Mercury-Selentium Interrelationships In Layers, R. J. Emerick, I. S. Palmer, C. W. Carlson, R. A. Nelson
Mercury-Selentium Interrelationships In Layers, R. J. Emerick, I. S. Palmer, C. W. Carlson, R. A. Nelson
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
Results presented in previous Poultry Field Day reports (A.S. Series 73-18, 74-19) have shown 5 to 10 ppm mercury as methylmercury to lower production and reproductive efficiency of hens. Reports from other stations have indicated the existence of a mercury-selenium interrelationship whereby the toxicity of one is reduced by the presence of elevated dietary levels of the other. The studies reported herein were for the purpose of determining the extent that this inter relationship may serve to reduce the detrimental effects of methylmercury or selenium in layers.
The Changing U.S. Cattle Industry, Gene E. Murra
The Changing U.S. Cattle Industry, Gene E. Murra
Economics Commentator (1972- 2016)
No abstract provided.
Moldy Feed - Good Or Bad, George Semeniuk, C. W. Carlson
Moldy Feed - Good Or Bad, George Semeniuk, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1975
Molds develop in feed in response to the nourishment they get from the feed. They develop only in the presence of air and as the result of favorable moisture conditions, which must be above a relative water vapor pressure equivalence of 65 to 70%. They develop very slowly at near-freezing temperatures and rapidly as temperatures rise. By enzyme action, they convert the energy components of the feed (carbohydrates, fats and proteins) into their own body structure with loss to the air mainly of metabolically-generated heat, water, carbon dioxide, ammonia and of fragments of their body as spores. They may or …
Native Shrubs Of South Dakota, Larry Helwig
Native Shrubs Of South Dakota, Larry Helwig
SDSU Extension Circulars
This publication provides information on common native shrubs growing abundantly or those that have gone native, such as those found along fences or wooded areas. It defines shrubs and explains how to identify them by the characteristics of their leaves, twigs, buds, fruit, and flowers. Illustrations are included to aid in identification.
Injectable Famphur For Control Of Grubs In Cattle, P. H. Kohler, R. N. Gates, L. B. Embry, L. B. Embry
Injectable Famphur For Control Of Grubs In Cattle, P. H. Kohler, R. N. Gates, L. B. Embry, L. B. Embry
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1975
Grubs are a major pest of cattle and cause considerable economic loss to the cattle industry. Running of cattle and standing in available water sources during heel fly strikes no doubt are reflected in lighter weaning weights of claves because of reduced grazing time and cows becoming separated from their calves. Other losses to producers and feeders include possible reduced feedlot performance by grub infested animals, weight loss and down grading of carcasses that are trimmed to remove areas damaged by grubs and a lower value for hides due to grub holes. Several effective products and methods of treatment are …
Energy Level In Ration, Market Weight And Types Of Cattle, L. B. Embry, W. J. Costello, W. S. Swan
Energy Level In Ration, Market Weight And Types Of Cattle, L. B. Embry, W. J. Costello, W. S. Swan
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1975
The effect of body size on feed efficiency has been the subject of research for several years. Evidence was presented from some of the early research that body weight is unrelated to feed efficiency. Recent research has also shown that current recommended net energy requirements, such as those by the National Research Council, for growing and finishing beef cattle are valid for various sizes and types of beef animals. Large-bodied cattle gaining at a faster rate require more feed and should be fed ro heavier weights to reach best market grade.
Nineteenth Annual Cattle Feeders Day, Animal Science Department
Nineteenth Annual Cattle Feeders Day, Animal Science Department
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1975
These are the complete proceedings of the nineteenth annual Cattle Feeders Day held on October 31, 1975 at South Dakota State University.
Feedlot Health Through Preventative Management, M. W. Vorhies
Feedlot Health Through Preventative Management, M. W. Vorhies
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1975
Livestock production has become increasingly intensive and the momentum of the change has been so great that realistically it has been instrumental in presenting the Veterinarian with problems that have outstripped his knowledge.
Marketing Margins For Beef And Related Considerations, Bruce A. Ginn
Marketing Margins For Beef And Related Considerations, Bruce A. Ginn
South Dakota Cattle Feeders Field Day Proceedings and Research Reports, 1975
In an environment where inflation has become a way of life, rising prices are a natural accomplice. High prices are fine--for the seller. But those of us who wear the hat of the consumer (and that's all of us) greet escalating costs with a less than joyful attitude. The question is, Can consumers, longshoremen, producers, shippers, and the Russians find happiness together? In some respects the interests of the producer and the consumer may not be significantly different and could form the basis of an alliance in which marketing innovations could take place.