Swine Day, 1980
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Item Open Access Bioavailability of phosphorus in selected feedstuffs for pigs(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T18:03:23Z) Huang, K.; Allee, G.L.We used 140 crossbred pigs averaging 30.4 lb to determine phosphorus bioavailability with the slope-ratio technique. A standard curve was established by feeding a basal diet 0% inorganic phosphorus and three levels of NaH2P04H20 (.056% P, .112% P, and .168% P). The response curve of test ingredients waS established with basal diet data and feeding three levels of each test ingredient. The test ingredient was incorporated at the expense of dextrose. The relative phosphorus bioavailability values were: 51% for wheat, 23% for milo, 35% for oats, 29% for corn, 36% for soybean meal, 42% for cottonseed meal, 93% for meat and bone meal, and 102% for dicalcium phosphate.Item Open Access Influence of fiber sources on weaned pigs' performance(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T18:02:45Z) Hines, Robert H.Yorkshire pigs weaned at 5 to 6 weeks and averaging 25 lb were used to determine effects of diets with increased fiber from ground oats, wheat bran, alfalfa meal, or dried beet pulp on performance and diarrhea. The basal diet (corn-soybean meal fortified) contained 2.2% crude fiber; the diets using more fibrous feeds contained 3.9% fiber. Average daily gains on the basal and fiber diets were similar, as were the pounds of feed per pound of gain. Pigs fed the ground oats and wheat bran diets had slightly better fecal scores than those fed the other diets. None of the differences in performance or in daily fecal scores was statistically significant. Fiber added by ground oats, wheat bran, dried beet pulp, or alfalfa meal was neither beneficial nor detrimental to the performance of the weaned pigs.Item Open Access Various methods of cooling sows in outside lots(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T18:02:05Z) Ames, D.; Pollmann, S.; Francis, G.; Nichols, David A.; dnicholsIntermittent sprinkling in outside individual sow pens reduces the amount of water used to cool the sow without adversely affecting performance.Item Open Access Smutty wheat in swine diets(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T18:00:39Z) Allee, G.L.Smutty wheat substituted for milo in diets for pigs from 20-60 pounds did not affect pig performance.Item Open Access Utilization of wheat bran in finishing swine diets(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T17:57:06Z) Hines, Robert H.Two trials with finishing pigs were conducted to evaluate wheat bran added to a basal milo-soybean meal diet to provide more crude fiber. Pigs fed added wheat bran (5-10-15-20%) and those fed the basal diet gained similarly, but 40% wheat bran (5.8% crude fiber) signigicant1y reduced rate of gain. Feed per pound of gain was improved approximately 4 to 5% with the addition of 10 or 15% wheat bran; however, cost per pound of gain was the same. Wheat bran usually costing more than milo would not merit its use in swine finishing diets.Item Open Access Limiting order of amino acid in Alfalfa Leaf Protein Concentrate (ALPC) for growing pigs(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T17:49:17Z) Hsu, A.; Allee, G.L.Seventy-two crossbred pigs averaging 23.5 lb initially and 12 crossbred barrows averaging 31.5 lb initially were used to study the limiting order of amino acids in ALPC for growing pigs in a feeding trial and a nitrogen balance trial. The basal diet contained 20% ALPC, as the amino acids source, and dextrose, as the energy source. Pigs fed the basal diet supplemented with methionine gained faster (P<.05) and more efficiently than pigs fed the basal diet, indicating that methionine was the first limiting amino acid in ALPC. Adding L- isoleucine (.2%) in the presence of methionine and lysi1e improved daily gain and feed efficiency (P<.05). These results suggest that isoleucine is the second limiting amino acid. Results from the nitrogen balance trial showed that adding .3% DL-methionine increased nitrogen retention (P<.05), confirming the growth trial results that showed methionine to be the first limiting amino acid in ALPC for growing pigs.Item Open Access Effects of form of sulfa on medicated water consumption(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T17:37:54Z) Schoneweis, D.; Allee, G.L.Four-week old weaned pigs demonstrated a marked preference in medicated water consumption depending on form of sulfa. Medicated water consumption was greatly reduced when sulfamethazine was used. Sulfadimethoxine was the most readily accepted one evaluated and sulfathazine preferred least.Item Open Access Using exhaust air from a swine finishing house to grow vegetables and plants(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T17:37:27Z) Greig, J.K.; Spillman, C.K.; Koch, B.A.Exhaust air from a Kansas State University swine finishing house provides CO2 and possible other gases that are used by vegetable plants. In addition, a rock storage system reduces fuel requirements of the greenhouse. Tomatoes, cucumbers, and broccoli transplants have been grown in the greenhouses.Item Open Access Effects of artificial rearing and restricted nutrient intake during the first three weeks of life on later performance and carcass characteristics of pigs(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T17:36:49Z) Allee, G.L.; Noll, M.Sixty pigs from nine 1itters were allotted, 24 hours after birth, by litter, sex, and birth weight to three treatments: A) sow reared, B) artificially reared and fed milk replacer ad libitum twice daily (artificially reared-unrestricted), and C) artificially reared and restricted to 50% of the nutrient intake of treatment B (artificially reared-restricted). Artificially reared pigs were housed in individual cages during the 20 day treatment period. After 21 days of age, pigs were fed corn-soybean meal diets ad libitum to slaughter at 220 pounds. Average daily gains and pig weights at 21 days differed significantly (P<.0l) different among all treatments.Item Open Access Effect of temperature on performance of finishing swine(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T17:35:57Z) Nichols, David A.; Ames, D.R.; Hines, Robert H.; dnicholsWe used 128 barrows averaging approximately 160 lbs. and temperatures of 32, 41, 50, 59, 68, 77, 86 and 95 F to study the effects of temperature on growth and efficiency. No significant differences in performance were observed for pigs housed at temperatures from 50 to 77 F. Those housed at 32 and 41 F were significantly less efficient than those housed at any other temperature. Pigs exposed to 95 F ate significantly less and had lower daily gains than any other group. With increased energy costs, temperature for maximum performance may no longer be the temperature for most economical performance. Results from these studies indicate that environmental modifications for heating or cooling may not be justified when temperatures range from 50 to 77 F.Item Open Access The effects on boar reproductive efficiency of exposure to females during rearing(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T17:35:32Z) Davis, Duane L.; Craig, J.V.; Nelssen, Jim L.; Hines, Robert H.; jnelssen; davisThirty-two boars (16 littermates) were reared from 3½ to 5½ months in either an all-male group or with fence-line exposure to cycling sows and gilts. Exposure to females did not significantly increase testicle or accessory gland weights, sperm production, or libido score. Boars that displayed more sexual activity (mounts and sheath sniffs) from 3½ to 5½ months of age performed superiorly in mating tests at 5½ and 7½ months of age. Libido scores of littermate boars were very similar.Item Open Access Feeding value of Alfalfa Leaf Protein Concentrate(ALPC) for swine(Kansas State University. Agricultural Experiment Station and Cooperative Extension Service, 2010-04-30T17:35:20Z) Hsu, A.; Allee, G.L.Three feeding trials involving 96 starter pigs, 48 grower pigs and 48 finisher pigs were used to determine the feeding value of alfalfa leaf protein concentrate (ALPC) for swine. ALPC was substituted for 33%, 66% or 100% of dehulled soybean meal (SBM) on an equal-weight basis. Level of ALPC did not affect feed intake or feed efficiency. During the finisher phase, ALPC substituted for 66% or 100% of dehulled SBM, improved daily gain (P<.05). For the entire trial, ALPC did not affect feed efficiency; average daily gain was improved by replacing 66% dehulled SBM with ALPC (P<.05). Twelve crossbred barrows averaging 26 lb were used to determine protein and energy digestibilities and nitrogen balance in starter diets where ALPC replaced 0, 66%, or 100% of the dehulled SBM. Digestibilities of protein and energy of ALPC were 83.5% and 77.7% respectively. The digestible energy of ALPC, 4.17 kcal/g, was similar to that of dehulled SBM 4.39 kcal/g. These results suggest that ALPC can replace soybean meal in a corn diet for pigs from 17 lb to 202 lb with no adverse effects on feed efficiency, rate of gain, or carcass characteristics.
