Swine Day, 1970
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Item Open Access Growth of mixed and intact litters compared(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:43:35Z) Koch, B.A.; Hines, Robert H.Mixing litters after weaning did not significantly affect rate of gain or efficiency of growing pigs. Weight gains were similar (1.57 or 1.49) for mixed litters and intact litters during a 28-day post-weaning trial.Item Open Access Methods to prevent baby pig anemia(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:41:21Z) Koch, B.A.; Stuart, J.G.; Hines, Robert H.Three trials were conducted involving 231 head of pigs to determine the efficiency of various methods of providing supplemental iron to baby pigs. All treatment groups were effective in maintaining normal hematocrit values with no symptoms of baby pig anemia. Weight gains were similar in all trials.Item Open Access Evaluation of dried skim milk, dried whey, and fat in pig starters(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:41:09Z) Stuart, J.G.; Koch, B.A.; Hines, Robert H.Five starters were compared with a corn-soybean meal standard with 15% skim milk and 12% sugar. Rations containing dried skim milk or dried whey with 3 or 5% added edible fat also were compared. The rations were offered to suckling baby pigs from 2 to 4 weeks (phase 1) and again during 6 to 10 weeks of age (phase 2). During phase 1, neither feed intake nor total gain differed significantly. During phase 2 all rations produced similar weight gains and feed intake. Feed efficiency favored rations containing dried skim milk and 3 or 5% added fat. Rations containing more fat produced more efficient gains.Item Open Access Mechanical baby pig feeder(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:34:53Z) Hines, Robert H.Various types of mechanical units designed to replace lactating brood sows are available. The Mini-Mor Corporation, Omaha, Nebraska, lent Kansas State University a unit designed to raise 36 pigs in individual cages. We are not trying to replace the lactating sow but to save baby pigs when they lose their mothers, or when a sow has more pigs than teats. The unit also could be used with large litters, for pigs that are pushed back and obviously are not getting enough to eat when a few days old.Item Open Access Two antibiotic combinations with and without Vitamin E or fermentation product in rations for growing pigs(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:34:42Z) Koch, B.A.; Hines, Robert H.Growing pigs fed ASP-250 from birth to market gained equally as well as those fed TNT. Feed conversion values were quite similar. Adding a fermentation product or vitamin E to rations did not produce consistently better gains or feed efficiency.Item Open Access Waste disposal by aerobic oxidation(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:34:32Z) Koch, B.A.Waste disposal and odor control are two important problems in pork production. The odor formerly was called the "money smell" has suddenly become "Environmental Pollution." Concentrating many animals in small areas compounds the problem.Item Open Access Use of diallel matings to estimate maternal effects and general and specific combining abilities in swine(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:33:44Z) Wheat, J.D.; Yu, T.; Schalles, R.R.As early as 1926, Danish workers reported that cross-breeding gave larger litters at weaning that gained faster on less feed per pound of gain. Crossbreeding is now used extensively in market hog production. It uses heterosis that results from hybrid combinations. Heterosis (superiority of crossbred progeny over the average of their parents) may be evaluated in terms of a high general combining ability, the capacity to cross well in several crosses, and specific combining ability, the ability to "nick" or cross particularly well with certain other strains, but not with all. Strains that "nick" well are said to have specific combining ability.Item Open Access Comparison of pork carcass evaluation procedures(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:33:33Z) Stiffler, D.; Kropf, Donald H.Carcass data were obtained from 28 barrows from the Kansas Swine Testing Station and 31 from the Kansas State Barrow Contest in 1969. All were slaughtered and standard measurements taken. Each carcass was cut to wholesale cuts by the conventional K.S.U. lab method. Cut-out data were used to calculate ham-loin index, four lean-cut percentages (live and carcass weight), percent ham plus loin of live and carcass weight, and dollar value of five wholesale cuts per hundred weight of carcass.Item Open Access Corn or sorghum grain in growing-finishing rations (with and without added copper, Vitamin E, Biotin or Aureo SP-250)(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:33:22Z) Koch, B.A.; Hines, Robert H.Pigs fed corn gained faster than those fed sorghum grain in one trial. The reverse was true in a second trial. Overall average daily gain figures were almost identical (1.67 lbs. per day for corn; 1.65 lbs. per day for sorghum). Average feed efficiency favored corn slightly (3.03 to 3.10). Adding 250 ppm copper to the diet significantly increased weight gain in one of five trials. Adding either vitamin E, biotin, or Aureo SP-250 did not significantly increase average daily gain or improve feed efficiency. Barrows gained 15% faster than gilts. Crossbred pigs gained 8% faster than the average of all purebreds.Item Open Access Processed whole soybeans in growing-finishing rations(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:33:12Z) Koch, B.A.; Lafferty, D.T.; Hines, Robert H.This progress report covers only growth rate and feed efficiency of pigs the first 73 days of one feeding trial. Replacing soybean meal with either dry-roasted whole soybeans or pressure-extruded, whole soybeans did not significantly affect rate of growth or feed efficiency. Results were similar when the replacement was on a pound-for-pound basis or a protein-unit basis. Also, results were similar with rations in pellet or meal form. Pelleted rations were 2 to 14% more efficient than meal rations. Barrows gained 8% faster than gilts.Item Open Access Wheat in growing-finishing rations(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-05-07T21:33:01Z) Koch, B.A.; Hines, Robert H.Varying percentages of wheat replaced sorghum grain in rations for growing pigs in two trials. There were no significant differences in performance of pigs in trial one. In trial two significant differences unrelated to wheat in the diet occurred. Average feed efficiency for all groups receiving no wheat (100% sorghum) was 3.13 pounds. Average feed efficiency for all groups receiving no sorghum grain (100% wheat) was 3.31 pounds. Barrows gained 9% faster than gilts. Pelleting the ration saved an average of 49 pounds of feed for every 100 pounds of gain (17%).
