Swine Day, 1968
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Item Open Access Corn vs. sorghum grain for growing-finishing pigs(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:49:59Z) Koch, B.A.; Cowman, G.; Hines, Robert H.Kansas swine growers are quite sure' that corn-fed growing-finishing pigs will outperform those fed sorghum grain. Just as many others feel that sorghum grain is equal to corn in swine rations. Most of the time sorghum grain is lower in price per pound than corn. Research results suggest that corn and sorghum grain are quite similar in chemical composition and in feeding value. Sorghum grain is more variable in crude protein content than corn. One recent comparison between corn and sorghum grain is summarized in this report.Item Open Access Barrow, gilt comparisons -- gains and carcass composition at various ration protein levels(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:49:48Z) Kropf, Donald H.; Kasten, L.H.; Koch, B.A.; Hines, Robert H.Many studies have reported that barrows gain more rapidly than gilts, but gilts excell in carcass muscling and trimness. Recently, considerable interest has been directed toward determining ration protein needs of barrows compared to gilts, with a strong possibility that these protein needs differ. If this is true, feeding barrows and gilts separately may be recommended.Item Open Access Heat - extruded sorghum grain for growirig - finishing swine.(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:38:50Z) Cowman, G.L.; Deyoe, C.W.; Koch, B.A.; Pfost, H.B.; Hines, Robert H.This paper is a progress report of a research project initiated this past year designed to study the effects of heat and pressure processing of sorghum grain on the performance of swine. The theoretical reasoning behind this approach was to increase the utilization of sorghum grain by chemical and/or physical starch damage with the application of certain degrees of heat and pressure during processing. The starch granules, which contain complex forms of chemically stored" energy, must be broken-up and reduced into simple units of glucose in the digestive tract of the pig before absorption can occur.Item Open Access Growing - finishing rations supplemented with zinc - proteinate(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:38:40Z) Koch, B.A.; Kropf, Donald H.; Hines, Robert H.The need for zinc in swine rations has been firmly established. Likewise the inter-relationships between dietary zinc and other minerals, especially calcium, have been well authenticated. However, there are still many unanswered questions concerning zinc and its place in the swine diet.Item Open Access Animal protein as a source of unidentified growth factors for swine.(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:36:59Z) Koch, B.A.; Cowman, G.; Hines, Robert H.Most authorities agree that the value of a protein source is determined by its content of essential amino acids. On that basis soybean meal compares favorably' with the other commonly fed animal protein sources. However, there is some evidence, especially in the poultry research literature, that certain animal protein sources may contain unidentified growth factors. This report describes a trial in which two different animal proteins were fed at the 5% level in place of soybean meal in growing finishing-swine rations.Item Open Access DDVP (Shell Dichlorvos) for pregnant sows(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:36:46Z) Koch, B.A.; Cowman, G.L.; Hines, Robert H.Recent laboratory and research station reports have indicated that 2,2-dichlorovinyl dimethyl phosphate (DDVP) (Shell Dichlorvos) fed to pregnant sows late in gestation may have a favorable effect on the newborn pigs. This study was designed to attempt to measure that effect in terms of increased production or improved efficiency in a commercial herd. The commercial swine herd of Arnold and Bob Rose (Cawker City, Kansas) was used in this study which was financed by the Shell Chemical Company. The Rose herd is one of the larger outstanding commercial pork producing units in Kansas. For all practical purposes it is an S.P.F. herd although S.P.F certification has not been maintained.Item Open Access The effect of protein level and added amino acids in sorghum grain-soybean meal rations for swine(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:36:33Z) Koch, B.A.; Howard, R.D.; Kropf, Donald H.; Hines, Robert H.More information is needed on the optimum level of protein in sorghum grain-soybean meal rations for swine. Theoretically the protein value of a swine ration should be improved if the most limiting amino acids are added. This experiment was conducted to determine the most favorable level of protein in sorghum grain-soybean meal rations and the effect of added lysine and methionine.Item Open Access Effects of varying sorghum grain soybean meal ratios and added methionine on swine gains, feed efficiency and carcass composition and quality(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:36:23Z) Kropf, Donald H.; Kasten, L.H.; Koch, B.A.; Hines, Robert H.Limited work is available on proper protein levels in swine rations when sorghum grain is a major ration component. Remarkable improvement has been made in gaining ability, feed coversion and muscling in swine. Because of continued improvements in these characteristics due to breeding and selection, we need to periodically re-evaluate the requirements for protein and amino acid levels in swine rations. A deterioration in muscle quality' (color, firmness and marbling) seems to be associated with production of lean pork. This prompted a detailed study of muscle quality, carcass composition, feed/gain ratio and gain rate as affected by varying ratios of sorghum grain and soybean meal, as well as added methionine, in swine rations.Item Open Access Estrus synchronization in swine: trials with Aimax (I.C.I. 33,838)(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:36:13Z) Kiracofe, G.; Koch, B.A.; Hines, Robert H.Several methods of synchronizing estrus have been tried in swine. One of the oldest and most commonly used natural methods is weaning pigs from a group of sows simultaneously. When this is done, the majority of sows will show estrus 3 to 7 days later if the sows have been nursed for at least 3 weeks. This method is effective and highly fertile; however, in some cases it is not practical to breed at this time and a natural method of synchronization in gilts is not available.
