Influence of feeding frequency on performance and nitrogen metabolism in gestating swine

The influence of feeding frequency on performance and nitrogen metabolism in gestating swine was studied by feeding 4 pounds daily, 8 pounds every other day, or 12 pounds every third day. All animals were maintained in dry lots with portable housing and were fed a 12%-protein, corn-soybean meal diet in individual feeding stalls. Three successive 6 day collection studies were conducted with 6 gilts. Nitrogen digestibility was not influenced by feeding frequency. However, nitrogen retention decreased as intervals between feeding increased. Gilts fed 4 pounds daily retained more nitrogen than those fed 8 pounds every other day, while those fed 8 pounds every other day retained more than those fed 12 pounds every third day. Although nitrogen retention was significantly influenced by feeding frequency, sow performance as measured by number of pigs born, birth weight, number of pigs weaned, and weight of pigs at 28 days was not.; Swine Day, Manhattan, KS, November, 197

Performance of pigs fed corn, sorghum, or wheat with 0 or 4% added fat

We used 96 crossbred pigs averaging 8.3 kg (19.3 lbs.) to compare performances with sorghum, corn, or wheat with 0 or 4% added fat (tallow). The trial ended when pigs averaged approximately 220 pounds. Grain source (sorghum, corn, or wheat) did not affect average daily gain or feed efficiency of pigs during any ration phase (starter, grower, or finisher). Adding fat (to each grain ration) reduced feed intake and improved feed efficiency during each ration phase. The greatest improvement in feed efficiency from added fat was during the finishing phase.; Swine Day, Manhattan, KS, November 9, 197

Effects of supplemental lysine, methionine, and threonine on weanling pigs fed a low-protein milo-soybean meal diet

Three trials involving 331 weanling pigs (5 to 7 weeks old and weighing 20 to 33 pounds) were conducted to determine the effects of supplementing low-protein starter diets with crystalline amino aqids. In trials I and II, milo-soybean meal diets containing 12, 14, or 16% protein were supplemented so each contained the same quantity of lysine as an 18% protein, milo-soybean meal diet. Weight gain and feed efficiency of pigs fed the 16% protein lysine-supplemented diet was equivalent to that of pigs fed the 18% protein milo-soybean meal diet. Trial III evaluated 14, 16, 18, and 20% protein milo-soybean meal diets and the effects of supplementing the 14% protein diet with lysine, methionine, and threonine. In addition, the effects of supplemental lysine and methionine to the 16%proteindiet was also evaluated. Pigs performed similarly on diets containing 14% protein supplemented with lysine, methionine and threonine, 16% protein supplemented with lysine, and 18 or 20% protein milo-soybean meal diets. These studies indicate that a 16% protein milo-soybean meal diet supplemented with lysine is adequate for pigs weaned at 20 pounds.; Swine Day, Manhattan, KS, November, 197

Blended dried bakery product in swine starter rations

A growth trial, a digestion trial, and a preference trial were conducted to evaluate a blended dried bakery product (BDBP) as an ingredient in swine starter rations. Replacing 0, 10, 20, or 30% corn with BDBP had no effect on average daily gain or feed efficiency. When given a choice, pigs preferred a ration containing 20% BDBP. The energy and protein digestibilities in BOBP were 91.5% and 87.88%, respectively.; Swine Day, Manhattan, KS, November 10, 197

Sulfur amino acid requirement of the growing pig

A growth trial and a nitrogen retention trial were conducted to determine the sulfur amino acid requirement of the growing pig. Adding 0.10% DL-methionine to a 14.1% protein basal diet containing 0.21% sulfur amino acids significantly (P\u3c.05) increased daily gain and nitrogen retention. Further additions gave no beneficial effect, indicating that the sulfur amino acid requirement had been met by the initial addition of DL-methionine. Thus, the sulfur amino acid requirement of the growing pig fed a 14.1% protein diet does not exceed 0.31% of the diet.; Swine Day, Manhattan, KS, November 14, 197

Effects of whey products on performance of weaned pigs

Three trials were conducted utilizing 458 pigs with an average age of 21 days to study the effects of adding whole whey, or partially delactosed whey from two sources in the diet of weaned pigs on growth, feed intake, and feed efficiency. Additionally, the optimum length of time to feed whole whey and the relationship of age at weaning and addition of whey to the diet were studied. The addition of whey to the diets increased performance of the pigs by 2 to 3 pounds at 8 weeks of age. Pigs fed 20% whole whey diets for 2 weeks performed similarly as those fed 20% whole whey for 5 weeks. No differer1ces were observed between pigs fed whole whey and partially delactosed whey diets. Partially delactosed whey from two different sources produced similar pig performance. Pigs weaned at 3 and 5 weeks performed similarly and out-performed those weaned at 2 weeks. Pigs fed 20% whole whey (weaned at 2, 3, 4, or 5 weeks) outperformed pigs fed the control diet.; Swine Day, Manhattan, KS, November 11, 198

Evaluation of flavored mono-sodium glutamate in swine starter rations

Suckling pigs (2 to 4 weeks old) offered a choice of diets containing either flavored or unflavored mono-sodium glutamate (F-MSG or MSG) consumed 3.5 times more of the flavored than of the unflavored diet. Likewise, litters of suckling pigs offered only F-MSG diets consumed 3.5 times more than litters offered only the MSG diet. After weaning, pigs with access to F-MSG during the pre-weaning phase exhibited an initial and continued preference for the F-MSG diet by consuming 3.8 times more of it than of the MSG diet in preference trials. Pre-weaning feeding of pigs altered initial post-weaned preference patterns, as pigs with access to only the MSG diet did not prefer the F-MSG ration until the second week of the preference trial. In the second experiment, weaned pigs fed a flavored starter diet (flavor only) consumed significantly more feed per day and gained significantly faster than pigs fed either the F-MSG or MSG diets used in experiment I. Pigs fed the flavored ration consumed more feed per day than pigs fed the unflavored ration, but not significantly more. The feed:gain ratio of all treatments; flavor, F-MSG, MSG, and basal diet were similar.; Swine Day, Manhattan, KS, November 2, 197

Effect of feeding frequency on performance of growing pigs

The influence of frequency of feeding on weight gain, feed efficiency, and carcass measurements was investigated, using 48 pigs averaging 40 pounds. Differences in daily gain among pigs fed ad libitum, twice a day or once a day were not significant. However, pigs fed only once/48 hours gained significantly (P\u3c.05) slower than pigs on the other treatments. Pigs allowed access to feed once/24 hrs. or once/48 hrs. were more efficient (P\u3c.05) in feed utilization than pigs fed twice/ 24 hrs. or those fed ad libitum. Carcass measurements did not differ significantly among pigs fed ad libitum, twice/ 24 hrs., or once/24 hrs. Pigs allowed access to feed only once/48 hrs. had significantly (P\u3c.05) less backfat and smaller loin eye areas than pigs fed more frequently.; Swine Day, Manhattan, KS, October 7, 197

Iron dextran and iron dextran-gentamycin combined, compared as methods of preventing iron-deficiency anemia in neonatal pigs

Giving an iron iron dextran-gentamycin combination to young pigs had no advantages over giving them iron dextran alone, as measured by hemoglobin levels, packed cell volumes, or weight (when 28 days old).; Swine Day, Manhattan, KS, November 10, 197

Effect of feeding frequency on performance of growing pigs

The influence of frequency of feeding on weight gain, feed efficiency, and carcass measurements was investigated, using 48 pigs averaging 40 pounds. Differences in daily gain among pigs fed ad libitum, twice a day or once a day were not significant. However, pigs fed only once/48 hours gained significantly (P\u3c.05) slower than pigs on the other treatments. Pigs allowed access to feed once/24 hrs. or once/48 hrs. were more efficient (P\u3c.05) in feed utilization than pigs fed twice/ 24 hrs. or those fed ad libitum. Carcass measurements did not differ significantly among pigs fed ad libitum, twice/ 24 hrs., or once/24 hrs. Pigs allowed access to feed only once/48 hrs. had significantly (P\u3c.05) less backfat and smaller loin eye areas than pigs fed more frequently.; Swine Day, Manhattan, KS, October 7, 197