High-Lysine Corn in Growing-Finishing Swine Rations

The objectives of this experiment were to compare the performance and carcass characteristics of growing-finishing pigs fed rations of normal or opaque-2 corn containing recommend and low levels of protein

Effect of Protein Level in Growing-Finishing Swine Diets Fed to Pigs Marketed at Heavy Weights

The purpose of the two successive experiments reported herein was to determine the protein requirement of swine from a weight of approximately 44 to 245 lb

Effect of Dietary Protein Level on Growth and Carcass Characteristics of Growing-Finishing Swine Fed to Heavy Weights

In a previous experiment reported in A.S. Series 71-38, it was found that for growing pigs optimum gain, feed efficiency and carcass quality (meatiness) occurred at different dietary protein levels. It also appeared that the dietary protein level fed during the period of 170 to 250 lb. affected carcass development more than did dietary protein during the early growing phase. Therefore , this experiment was conducted to further study the effect of high and low dietary protein levels for pigs during three growth periods, 50 to 100 lb., 100 to 170 lb., and 170 to 250 lb

Vitamin E, Copper, and Tylosin in the Diets of Growing-Finishing Swine

Recent research with growing pigs has shown that vitamin E may be deficient in some corn-soybean meal diets. Some possible reasons why vitamin E deficiencies are being experienced today are that fewer pigs are fed on pasture, which is a good source of vitamin E; more corn is being picked wet and then artificially dried, which can destroy vitamin E; and the presence of a low selenium content of corn. Copper has been shown to produce a growth response similar to antibiotics when it is fed at levels of 125 to 250 ppm. the study reported herein was conducted during the winter of 1969-70 to study the effects on growing-finishing swine of supplementing diets with vitamin E, copper, tylosin and combinations of these ingredients

Design of a fault tolerant airborne digital computer. Volume 2: Computational requirements and technology

This final report summarizes the work on the design of a fault tolerant digital computer for aircraft. Volume 2 is composed of two parts. Part 1 is concerned with the computational requirements associated with an advanced commercial aircraft. Part 2 reviews the technology that will be available for the implementation of the computer in the 1975-1985 period. With regard to the computation task 26 computations have been categorized according to computational load, memory requirements, criticality, permitted down-time, and the need to save data in order to effect a roll-back. The technology part stresses the impact of large scale integration (LSI) on the realization of logic and memory. Also considered was module interconnection possibilities so as to minimize fault propagation

The Influence of Flushing During Estrus on Ovulation and Embryo Survival to 30 Days Gestation

English workers have reported that doubling the feed from 4 to 8 lb. for one feeding after breeding tended to increase the number of ovulation sites and the number of pigs born. Workers at Kentucky have also found similar results when gilts were fed ad libitum for a 12-hour period following breeding. Previous work done at this station has failed to confirm these reports. The experiment reported here is a further attempt to substantiate this work under South Dakota conditions

Swine Diets Utilizing Wheat

Previous trials have suggested that, when diets were supplemented at the same level and either corn or wheat was used in the same amount as the grain, pig gains were similar. However, pigs fed corn diets were more efficient in terms of both feed use and cost per pound of grain. Wheat diets supplemented at lower levels or assess the value of wheat\u27s higher protein level relative to corn and fed with or without supplemental lysine did not support satisfactory pig performance in terms of gain, feed efficiency or feed cost. Results of these trials suggested that an intermediate level of protein supplementation for wheat should be investigated. The trial reported here was designed with that objective

Management of Pigs Prior To and Immediately Following Weaning at Four Weeks of Age

Baby pig management at weaning remains the weak link in most swine operations. The pig\u27s management requirements remain as high at this stage of growth as they are when the pigs are on the show. Stress from improper nutrition, housing, temperature and ventilation as well as from establishing a new social order among regrouped pigs may affect performance and health problems of this young pig. Much is still to be learned about proper management which will minimize stress. South Dakota State University is cooperating with out Land Grant colleges in the North Central Region to evaluate the practice of intermingling litters prior to weaning to learn if the stress of weaning can be reduced the data presented herein are the results of the first trial

Effects of Dietary Protein, Calcium, and Phosphorus in Pig Starter Diets

The study reported herein was designed to determine the effect of dietary protein levels and varying levels of calcium and phosphorus on performance of early weaned pigs