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Articles 4321 - 4350 of 8049
Full-Text Articles in Entire DC Network
Effect Of Dietary Calcium Levels On Response Of Growing Pigs To Chlortetracycline, Richard C. Wahlstrom, John Balios, George W. Libal
Effect Of Dietary Calcium Levels On Response Of Growing Pigs To Chlortetracycline, Richard C. Wahlstrom, John Balios, George W. Libal
South Dakota Swine Field Day Proceedings and Research Reports, 1979
The study of reported herein was designed to determine the effect of different level of dietary calcium on growth performance as well as calcium and chlortetracycline levels in the blood serum of growing pigs.
Effect Of Dietary Calcium And Zinc On Performance Of Growing-Finishing Pigs, George W. Libal, Richard C. Wahlstrom
Effect Of Dietary Calcium And Zinc On Performance Of Growing-Finishing Pigs, George W. Libal, Richard C. Wahlstrom
South Dakota Swine Field Day Proceedings and Research Reports, 1979
Recently there have been a number of reports of swine feeds containing over 1% calcium. Previous research had indicated a high incidence of parakeratosis when diets contained over 1% calcium unless these diets were supplemented with additional zinc. This study was conducted to obtain additional information on the effects of high dietary calcium and different levels of supplemental zinc on performance of growing-finishing swine.
Effect Of Dietary Minerals On The Potentiation Of Chlortetracycline In Swine, Richard C. Wahlstrom, John Balios, George W. Libal
Effect Of Dietary Minerals On The Potentiation Of Chlortetracycline In Swine, Richard C. Wahlstrom, John Balios, George W. Libal
South Dakota Swine Field Day Proceedings and Research Reports, 1979
The primary objective of this experiment was to study the potentiation of chlortetracycline in swine. Several methods of potentiation were studied; they were increasing dietary levels of calcium sulfate, sodium sulfate and phosphorus.
Effect Of Prefarrowing Dietary Treatment On Pig Production, George W. Libal, Richard W. Wahlstrom
Effect Of Prefarrowing Dietary Treatment On Pig Production, George W. Libal, Richard W. Wahlstrom
South Dakota Swine Field Day Proceedings and Research Reports, 1979
A method of increasing birth weight and pig survival rate at weaning is desirable because of the large pig death losses normally ocurring during the first week after farrowing. Several management schemes are suggested using commercial products to improve this situation. This study reported herein was designed to test suggested management schemes.
Twenty-Third Annual Swine Day, Animal Science Department
Twenty-Third Annual Swine Day, Animal Science Department
South Dakota Swine Field Day Proceedings and Research Reports, 1979
These are the complete proceedings of the twenty-third annual South Dakota Swine Field Day held on November 15, 1979 at South Dakota State University.
Fat Added To Sow Gestation Diets, L. J. Kortan
Fat Added To Sow Gestation Diets, L. J. Kortan
South Dakota Swine Field Day Proceedings and Research Reports, 1979
Baby pigs are born with a minimal store of usable energy, primarily in the form of fat and glycogen. These stores are rapidly depleted after birth. It is generally thought that less than 15% of liver glycogen, which is the mostly is the most important store for usable energy, is present 24 hours after birth.
The Effect Of Fat Additions To Sow Diets During Late Gestation On Pig Survivability, George W. Libal, Richard C. Wahlstrom
The Effect Of Fat Additions To Sow Diets During Late Gestation On Pig Survivability, George W. Libal, Richard C. Wahlstrom
South Dakota Swine Field Day Proceedings and Research Reports, 1979
Death of pigs during the first few days after birth is one the most frustrating occurrences in a swine farrowing facility. Much of this death loss has been attributed to starvation and lack of adequate energy stores in the baby pig at birth. Recent work at several universities has suggested that the addition of 15 to 20% fat to the sow's diet prior to farrowing may increase stores of liver glycogen in the baby pig and increase the pig's survival rate. Under normal conditions this level of fat is impractical, if not impossible, to handle in a feed mill. The …
Amino Acid Supplementation Of Low Protein Corn-Soy Diets For Young Weaned Pigs, Richard C. Wahlstrom, Michael W. Cox, George W. Libal
Amino Acid Supplementation Of Low Protein Corn-Soy Diets For Young Weaned Pigs, Richard C. Wahlstrom, Michael W. Cox, George W. Libal
South Dakota Swine Field Day Proceedings and Research Reports, 1979
The objectives of this experiment were to determine the need for tryptophan supplementation of low protein starter diets supplemented with lysine and methionine and to determine the value of N-acetyl-DL-tryptophan as a source of tryptophan.
Effect Of Added Fat In Pig Starter Diets, Richard C. Wahlstrom, George W. Libal
Effect Of Added Fat In Pig Starter Diets, Richard C. Wahlstrom, George W. Libal
South Dakota Swine Field Day Proceedings and Research Reports, 1979
Recently, several dried fat products have appeared on the market. These products are much easier to mix into diets than fat products that have to be added in liquid form. This experiment was conducted to determine the effect of a dried fat product added to young pig diets at two levels. The diets were also fed in both meal and pellet form to obtain information on the effect of the physical form of the diet on pig acceptance and performance.
Interpreting Individual Cow Somatic Cell Counts, Cooperative Extension South Dakota State University
Interpreting Individual Cow Somatic Cell Counts, Cooperative Extension South Dakota State University
SDSU Extension Fact Sheets
Detecting mastitis through somatic cell counts on composite milk samples has created a lot of interest among DHI dairymen. How to interpret these reports has also ca used some confusion.
Management Guide For Planning A Farm Or Ranch Business, Wallace G. Aanderud, Ronald Thaden, John N. Maher, Francis Crandall
Management Guide For Planning A Farm Or Ranch Business, Wallace G. Aanderud, Ronald Thaden, John N. Maher, Francis Crandall
SDSU Extension Circulars
This guidebook contains reference material for planning a farm business. Farm business planning for better family living, high profit farm plans, budgeting for more profit, management strategies in beef production, a partial budget for planned changes, and reference tables for crops, livestock, labor, machinery, labor, loans, and social security and income tax are included.
Ten Steps In Planning Your Farm Or Ranch Business, Wallace G. Aanderud, Ronald Thaden, John N. Maher, Francis Crandall
Ten Steps In Planning Your Farm Or Ranch Business, Wallace G. Aanderud, Ronald Thaden, John N. Maher, Francis Crandall
SDSU Extension Circulars
This is a companion to "Management guide for planning a. farm or ranch business" (EC 716) and "Livestock budgets and planning prices" (EMC 666). Forms are provided so that in ten easy steps you can. organize your business in various ways to see which looks most promising. You may either use your own information or the average figures from the management guide and livestock enterprise budgets.
Beef Cattle Performance Testing, Cooperative Extension South Dakota State University
Beef Cattle Performance Testing, Cooperative Extension South Dakota State University
SDSU Extension Fact Sheets
Performance testing offers beef cattle breeders a way of measuring differences among animals for traits that have economic significance. The economic traits are those that contribute to production efficiency, carcass desirability, rapid growth rate, efficient use of food, regularity of reproduction, and carcass quality desired by the packer and consumer. The differences measured in these traits are inherited differently. The systematic measurement of these differences, the recording of the measurements, and the use of the records in a selection program will increase the rate of genetic improvement in a herd.
Trees Of South Dakota, Paul E. Collins, L. L. Helwig
Trees Of South Dakota, Paul E. Collins, L. L. Helwig
SDSU Extension Circulars
The study of trees often becomes puzzling to the beginner when several trees of the same species are examined. The leaves, bark, shape, fruit, etc., may differ from tree to tree. Trees are like people—no two are exactly alike. We learn our trees, then, by studying several trees, not just one. This gives us a knowledge of the range of these variations. In time we take these differences in stride. Identification is then no longer a problem. This booklet was prepared mainly for South Dakota boys and girls. It will assist teachers in the public schools and will be of …
Sdsu Collegian, October 24, 1979, Student Association Of South Dakota State University
Sdsu Collegian, October 24, 1979, Student Association Of South Dakota State University
The Collegian Archive : 1970 to 1979
Vol. 88, No. 7
Performance Of Laying Hens Fed Increasing Amounts Of Lysine In Low Protein Diets, J. B. Carey, C. W. Carlson
Performance Of Laying Hens Fed Increasing Amounts Of Lysine In Low Protein Diets, J. B. Carey, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1979
The current N.R.C. (1977) recommendations for lysine content of laying hen rations is 0.60%. This level of lysine is recommended along with 15% protein. The influence of protein level or protein quality on this requirement is not known. This experiment examined laying hen performance over a range (0.55% to 0.80%) of lysine levels in 10% and 12% protein diets to determine optimum lysine intake. Also, the influence of the addition of the amino acids isoleucine and tryptophan to the 10% protein diet was studied.
Grower Diets For Layer Pullets Using Corn Or Oats, C. W. Carlson, R. A. Nelson, A. B. Kashani
Grower Diets For Layer Pullets Using Corn Or Oats, C. W. Carlson, R. A. Nelson, A. B. Kashani
South Dakota Poultry Field Day Proceedings and Research Reports, 1979
In previous studies with low-protein (12%) diets for growing pullets, the diets that have supported the best subsequent production and with the least mortality and layer feed have contained some oats. Last year's results showed a 30% oats diet to be just as good in that regard as one containing 80% oats. A 12% protein diet with only corn as the grain component caused the hens to produce at a 2.7% lower rate of production (440 hens per treatment, significant at 0.05).
A Ten-Year Flock Record Summary, P. E. Plumart
A Ten-Year Flock Record Summary, P. E. Plumart
South Dakota Poultry Field Day Proceedings and Research Reports, 1979
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. The project started with a few flocks and expanded to 67 in 1972. However, in the spring of 1975, participation dropped to about 30 flockowners and has continued to drop down to a current level of about 15. The records of those flocks completing their laying cycle during the calendar years of 1969 through 1978 are summarized in Tables 1 and 2.
Thiocarbamide: A Growth Regulator To Control House Flies In Cage Laying Operations, J. M. Vandepopuliere
Thiocarbamide: A Growth Regulator To Control House Flies In Cage Laying Operations, J. M. Vandepopuliere
South Dakota Poultry Field Day Proceedings and Research Reports, 1979
The life cycle of the common house fly (Musca domestica, L.) is supported in an optimum condition within the commercial cage laying unit. The manure and waste feed provide an ideal media for breeding, egg laying, hatching and larvae development. The mature larvae pupate and hatch into adult flies. The reproductive cycle requires 5 to 10 days, depending on the temperature, humidity and light.
Effects Of Oat Groats In Force-Fed Diets On Fatty Liver-Hemorrhagic Syndrome (Flhs), R. A. Nelson, C. W. Carlson
Effects Of Oat Groats In Force-Fed Diets On Fatty Liver-Hemorrhagic Syndrome (Flhs), R. A. Nelson, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1979
FLHS still remains an important cause of mortality, see A.S. Series 78-4. The events preceding mortality due to FLHS preclude a much reduced rate of production. The economic effects of such losses may well exceed $1 million annually in South Dakota alone. Earlier work at this laboratory has shown oats to contain a factor which protected against FLHS in laying hens. Subsequent studies showed that the oat hull did not contain the protective factor.
Eleventh Annual Poultry Field Day, Animal Science Department
Eleventh Annual Poultry Field Day, Animal Science Department
South Dakota Poultry Field Day Proceedings and Research Reports, 1979
These are the complete proceedings of the eleventh annual Poultry Field Day held on October 18th, 1979 at South Dakota State University.
Effects Of Zinc Bacitracin On Growing Turkeys And Laying Hens, C. W. Carlson, R. A. Nelson, A. B. Kashani
Effects Of Zinc Bacitracin On Growing Turkeys And Laying Hens, C. W. Carlson, R. A. Nelson, A. B. Kashani
South Dakota Poultry Field Day Proceedings and Research Reports, 1979
With the current concern over the use of antibiotics in poultry feeds, greater interest is being given to antibiotics which are not absorbed into the blood stream. Bacitracin is one of that type being considered and actually is in extensive commercial use.
Previous studies at this station showed Bacitracin-MD to improve production of laying hens fed a low density diet with the antibiotic at levels of 10, 25 and 50 grams per ton (see A.S. Series 77-21). No responses were obtained with the 100-gram per ton level or any level when supplementing a high density diet. In addition, bacitracin has …
Causes Of Mortality In Poultry Submitted To The Animal Disease Research And Diagnostic Laboratory - July 1978-June 1979, Martin E. Bergeland
Causes Of Mortality In Poultry Submitted To The Animal Disease Research And Diagnostic Laboratory - July 1978-June 1979, Martin E. Bergeland
South Dakota Poultry Field Day Proceedings and Research Reports, 1979
No abstract provided.
Effects Of Probiotic On Turkeys And Laying Hens, C. W. Carlson, R. A. Nelson, A. B. Kashani
Effects Of Probiotic On Turkeys And Laying Hens, C. W. Carlson, R. A. Nelson, A. B. Kashani
South Dakota Poultry Field Day Proceedings and Research Reports, 1979
Previous studies (A.S. Series 78-7, 77-20 and 76-10) have shown probiotics to have beneficial effects upon growing turkeys under some conditions of stress. There was no response with laying hens in a study reported on last year (A.S. Series 78-7).
Mercury, Selenium And Protein Interrelationships In Laying Hens, R. J. Emerick, I. S. Palmer, R. A. Nelson, C. W. Carlson
Mercury, Selenium And Protein Interrelationships In Laying Hens, R. J. Emerick, I. S. Palmer, R. A. Nelson, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1979
Mercury contamination of some segments of the environment has been implicated as a cause of lowered reproductive efficiency in certain waterfowl, possibly through the production of lower quality, thin shelled eggs prone to embryo dehydration and death. Selenium, on the other hand, has been reported to provide some protection from methylmercury toxicity. The studies reported here were for the purpose of determining the extent of the mercury-selenium relationship and whether it is influenced by dietary protein level.
Calcification Studies With Laying Hens, Rose Wright, C. W. Carlson
Calcification Studies With Laying Hens, Rose Wright, C. W. Carlson
South Dakota Poultry Field Day Proceedings and Research Reports, 1979
The aim of the present study is to determine whether certain metabolites of vitamin D3 (1,25-dihydroxycholecalciferol or 24,25-dihydroxycholecalciferol) added to the diet will affect shell quality in aged laying hens. This will be further evaluated by measurements of the carbonic anhydrase activity of the shell gland, blood serum calcium levels and calcium binding protein activity of the duodenum and shell gland.
Sdsu Collegian, October 17, 1979, Student Association Of South Dakota State University
Sdsu Collegian, October 17, 1979, Student Association Of South Dakota State University
The Collegian Archive : 1970 to 1979
Vol. 88, No. 6
Sdsu Collegian, October 10, 1979, Student Association Of South Dakota State University
Sdsu Collegian, October 10, 1979, Student Association Of South Dakota State University
The Collegian Archive : 1970 to 1979
Vol. 88, No. 5
Sdsu Collegian, October 3, 1979, Student Association Of South Dakota State University
Sdsu Collegian, October 3, 1979, Student Association Of South Dakota State University
The Collegian Archive : 1970 to 1979
Vol. 88, No. 4
Plugging Up The Holes, Cooperative Extension South Dakota State University
Plugging Up The Holes, Cooperative Extension South Dakota State University
SDSU Extension Fact Sheets
Renovating the tree rows in the S/W is the hardest phase in S/W repair. But many South Dakota S/Ws are reaching the age where work must be done now, while there's still some benefit to be gotten from existing trees while the new ones grow.