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Animal Sciences

Kansas Agricultural Experiment Station Research Reports

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1984

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Full-Text Articles in Life Sciences

Effects Of Various Feeding, Breeding And Management Practices On Milk Production (1984), James R. Dunham Jan 1984

Effects Of Various Feeding, Breeding And Management Practices On Milk Production (1984), James R. Dunham

Kansas Agricultural Experiment Station Research Reports

The March 1984 DHI summary of Kansas Holstein herds shows some interesting correlations of various feeding, breeding, and management factors to production (Table 1). The Rolling Herd Average (RBA) is an excellent evaluation of the efficiency of dairy herds since RHA and income-over-feed-cost are closely related. Although income-over-feed-cost is not profit, it provides the income for paying the other costs of producing milk. The goal of every dairy producer should be to increase the RHA in order to improve profitability.; Dairy Day, 1984, Kansas State University, Manhattan, KS, 1984;

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Effects Of Low Voltage Electrical Stimulation During Bleeding On Characteristics Of Beef Loin Eye Top Round Muscles, Donald H. Kropf, Melvin C. Hunt, John A. Unruh, Curtis L. Kastner, Michael E. Dikeman Jan 1984

Effects Of Low Voltage Electrical Stimulation During Bleeding On Characteristics Of Beef Loin Eye Top Round Muscles, Donald H. Kropf, Melvin C. Hunt, John A. Unruh, Curtis L. Kastner, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Low voltage electrical stimulation (ES) during bleeding and subsequent carcass chilling at 36 to 46° F resulted in 1) a more rapid pH decline 2) initial lighter red color, but more rapid discoloration during display 3) softer and coarser textured lean 4) reduced water holding capacity and juiciness and 5) decreased tenderness of the loin eye longissimus (LE) muscle when compared to the non-stimulated control (C) LE muscle. ES effects on top round semimembranosus (TR) muscle were limited to a more rapid pH decline and lower water holding capacity. Our results indicate that ES soon after slaughter, coupled with relatively …

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Effect Of Supplemental Vitamin E On The Performance, Metabolic Profiles, And Immune Responses Of Dairy Calves (1984), P.G. Reddy, J.L. Morrill, H.C. Minocha, M.B. Morrill Jan 1984

Effect Of Supplemental Vitamin E On The Performance, Metabolic Profiles, And Immune Responses Of Dairy Calves (1984), P.G. Reddy, J.L. Morrill, H.C. Minocha, M.B. Morrill

Kansas Agricultural Experiment Station Research Reports

Forty-six Holstein heifer calves were used from birth to 3 rno to study the effect of supplemental vitamin E at 1400 or 2800 mg dl-a.-tocopherol acetate given orally at weekly intervals or 1400 mg dl-a-tocopherol by intramuscular injection. Weekly starter consumption was 10 to 27 % more (P=.12) and weekly weight gains were 9 to 25% more (P=.13) in supplemented calves. Creatine phosphokinase activity was negatively correlated with serurn tocopherol concentrations, indicating a subclinical muscular dystrophy in unsupplemented calves. Lymphocyte stimulation indices were positively correlated with serum tocopherol concentration. Calves given high level of oral supplementation had higher IgM antibody …

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Medication Programs For Newly Received Calves, D. Axe, M. Spire, Jack G. Riley Jan 1984

Medication Programs For Newly Received Calves, D. Axe, M. Spire, Jack G. Riley

Kansas Agricultural Experiment Station Research Reports

Three medication programs for newly purchased feeder calves were compared and found to be similar in effectiveness. There was considerable variation in cost between the three medication programs which indicates a potential cost saving opportunity. Twenty-three percent of the calves received were diagnosed as sick at least once during the 56-day trial.

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Silage Additive Update: 1984, K. Bolsen, M. Hinds, J. Brethour Jan 1984

Silage Additive Update: 1984, K. Bolsen, M. Hinds, J. Brethour

Kansas Agricultural Experiment Station Research Reports

Numerous commercial silage additives, whose manufacturers claim will improve silage quality, are available to Kansas farmers and ranchers. We believe that these claims must ultimately be documented with farm-scale research. To date, Manhattan and Ft. Hays farm-scale silo results clearly indicate that a few silage additives do improve silage quality and are cost-effective. Several of them have consistently reduced "in silo" losses. But results probably will not be favorable with all additives under every farm condition. Nor will research results obtained with one commercial product in our trials also apply to other products on the market, however similar in ingredient …

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Single Vs. Reimplant Programs For Finishing Steers, Jack G. Riley, Ronald V. Pope Jan 1984

Single Vs. Reimplant Programs For Finishing Steers, Jack G. Riley, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

Finishing yearling beef steers were used to compare various implant programs in a 167-day trial. All implant programs increased daily gain ranging from 6.6 to 25.4% over non-implanted controls and improved feed efficiency ranging from .5 to 13.9%. Steers implanted with Ralgro® initially and reimplanted 75 days later with Synovex-S gained the fastest and most

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Effect Of A Single Ralgro Implant On Conception Rates And Calving Difficulty In First Calf Beef Heifers, R.P. Bolze, L.R. Corah, R.J. Pruitt Jan 1984

Effect Of A Single Ralgro Implant On Conception Rates And Calving Difficulty In First Calf Beef Heifers, R.P. Bolze, L.R. Corah, R.J. Pruitt

Kansas Agricultural Experiment Station Research Reports

Three hundred and seventy four heifers from two Kansas ranches were used to determine if a single Ralgro implant given either at two months of age or at weaning would influence pelvic development and subsequent calving difficulty or conception rates. The study involved two hers of Simmental (spring and fall calving) and one herd of fall calving Angus cattle. Ralgro did not influence conception rates as yearlings, or percentages of heifers requiring assistance with their first calf. Implanted heifers had larger pelvic areas as yearlings, but the advantage disappeared by two years of age. Pelvic area in assisted vs unassisted …

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Effect Of Reduced Nighttime Temperature On Nursery Pig Performance (1984), David A. Nichols, Frank Blecha, M Johnston, Robert H. Hines Jan 1984

Effect Of Reduced Nighttime Temperature On Nursery Pig Performance (1984), David A. Nichols, Frank Blecha, M Johnston, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

A total of 144 weaned pigs were used to evaluate the effect of reduced nighttime temperatures on pig performance. No differences were observed in average daily feed intake, daily gain, or feed efficiency regardless of temperature treatment. These results indicate that constant high temperature may not be required for nursery pigs.; Swine Day, Manhattan, KS, November 15, 1984

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Interactions Of Copper, Selenium, And Vitamin E For Weanling Swine (1984), A J. Thulin, D S. Pollmann, Frank Blecha, G A. Kennedy, P Whetter, G L. Allee Jan 1984

Interactions Of Copper, Selenium, And Vitamin E For Weanling Swine (1984), A J. Thulin, D S. Pollmann, Frank Blecha, G A. Kennedy, P Whetter, G L. Allee

Kansas Agricultural Experiment Station Research Reports

One-hundred and sixty pigs were utilized to evaluate possible interactions between copper (Cu), selenium (Se), and vitamin E (E) on growth and immunity of starter pigs. Copper (260 ppm) added to the diet did not effect Se and/or E utilization for growth, feed efficiency (FE), or immunity. However, addition of 260 ppm of Cu to the diets of starter pigs resulted in an 8% improvement in feed intake (FI) and a 13% improvement in average daily gain (ADG) for the first 2 wk on test. There was no effect on performance due to E additions. However, addition of .3 ppm …

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Altrenogest And Fat For Summer Breeding Of First-Litter Sows (1984), Jeffrey S. Stevenson, Duane L. Davis, D S. Pollmann Jan 1984

Altrenogest And Fat For Summer Breeding Of First-Litter Sows (1984), Jeffrey S. Stevenson, Duane L. Davis, D S. Pollmann

Kansas Agricultural Experiment Station Research Reports

Crossbred first-Iitter sows in a commercial swine unit were assigned to serve as controls after summer weanings or were fed altrenogest for 7 days or altrenogest for 7 days plus supplemental fat for 14 days after weaning. While similar proportions of sows came into heat after weaning, sows fed altrenogest returned to estrus about 9 days later than control sows. Incidence of anestrus was similar across sow groups (31%), while most of the sows not detected in heat could be classified by cause after examining serum progesterone concentrations at 3 wk after weaning. Nearly 69 % of the sows not …

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Evaluation Of An Early Weaning Program For Dairy Calves (1984), J.L. Morrill, M.K. Schmidt, A.J. Cullen, M.B. Morrill Jan 1984

Evaluation Of An Early Weaning Program For Dairy Calves (1984), J.L. Morrill, M.K. Schmidt, A.J. Cullen, M.B. Morrill

Kansas Agricultural Experiment Station Research Reports

One experiment was conducted to compare an early weaning program, using a prestarter , when calves were weaned at 2 or 3 wk of age with programs using conventional feeds and weaning at 3 or 6 wk of age. Daily gains to 8 wk of age were 1.19 and 1.03 pound for calves fed a commercial starter and weaned at 6 and 3 weeks of age, respectively; and were 1.1 and .97 for calves on the early weaning program and weaned at 3 and 2 wk of age, respectively. Another experiment was conducted to test one variation of the early …

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Immunoglobulin Concentrations In Serum And Nasal Secretions Of Calves At The Onset Of Pneumonia (1984), L.B. Corbeil, B. Watt, R.R. Corbeil, T.G. Betzen Jan 1984

Immunoglobulin Concentrations In Serum And Nasal Secretions Of Calves At The Onset Of Pneumonia (1984), L.B. Corbeil, B. Watt, R.R. Corbeil, T.G. Betzen

Kansas Agricultural Experiment Station Research Reports

Immunoglobulin (Ig) concentrations in serurn and in nasal secretions were correlated with pneumonia and diarrhea during the first 12 wk of life of dairy calves. The peak onset of pneumonia occurred between 2 and 4 wk of age when the calves' serum Ig G1, Ig G2 and IgA concentrations were lowest. As IgG2 concentrations increased, fewer calves developed pneumonia. Peak onset of pneumonia was also correlated with the lowest IgG and IgA concentrations in the calves' nasal secretions. Diarrhea often preceded pneumonia.; Dairy Day, 1984, Kansas State University, Manhattan, KS, 1984;

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Gonadotropin-Releasing Hormone And Conception Of Holstein Cows (1984), Jeffrey S. Stevenson, M.K. Schmidt, Edward P. Call Jan 1984

Gonadotropin-Releasing Hormone And Conception Of Holstein Cows (1984), Jeffrey S. Stevenson, M.K. Schmidt, Edward P. Call

Kansas Agricultural Experiment Station Research Reports

To study the effects of gonadotropin-releasing hormone (GnRH) and timing of artificial insemination (Al) on fertility, 328 dairy cows were divided into four groups. Inseminations at first, second, or third service were done soon after detected estrus (0 hr) or 12 h later. One-half of the cows in each of the preceding groups received GnRH (100µg) or saline within 30 sec after AI. Conception at first service was not improved by GnRH. But conception rates at repeat services were improved by 21% when cows received GnRH after AI. Time of AI (0 vs 12 hr) had no effect on conception. …

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Prostaglandin F2Α For Lactating Dairy Cows With Silent Estrus (1984), S.S. Plunkett, Jeffrey S. Stevenson, Edward P. Call Jan 1984

Prostaglandin F2Α For Lactating Dairy Cows With Silent Estrus (1984), S.S. Plunkett, Jeffrey S. Stevenson, Edward P. Call

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted in 17 dairy herds in NE Kansas to determine the effectiveness of prostaglandin F2α(PGF) for reducing intervals to conception for cows with silent or unobserved estrus. Cows that failed to be seen in heat so they could be inseminated after calving (Exp. 1) and cows that did not return to estrus after AI and were not pregnant when presented to veterinarian for pregnancy examination (Exp. 2) were assigned alternately to be given PGF or to receive no treatment after detection of a palpable corpus luteum. Cows were inseminated at 72 and 96 hr after PGF treatment …

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Effect Of Processing Temperature On Utilization Of Whole Soybeans By Young Calves (1984), I.E.O. Abdelgadir, J.L. Morrill, J.A. Stutts, B. Morrill Jan 1984

Effect Of Processing Temperature On Utilization Of Whole Soybeans By Young Calves (1984), I.E.O. Abdelgadir, J.L. Morrill, J.A. Stutts, B. Morrill

Kansas Agricultural Experiment Station Research Reports

Two trials were conducted to determine the optimum conditions for processing whole soybeans for young calves. In the first trial, laboratory procedures and a nitrogen balance study were used. This information was used to design the second trial in which raw and processed soybeans were evaluated in an 8-wk growth trial using 96 Holstein day-old calves. Starters contained soybean meal (SBM), SBM with added fat, raw soybeans, or soybeans processed at 280, 340, or 375°F in a California Pellet Mill Jet-Sploder. Calves fed the starters containing soybeans processed at 340 consumed more feed, gained faster, had lower fecal scores (less …

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Factors Affecting Estrus And Fertility Of Holstein Heifers After Prostaglandin F2Α (1984), Jeffrey S. Stevenson, M.K. Schmidt, Edward P. Call Jan 1984

Factors Affecting Estrus And Fertility Of Holstein Heifers After Prostaglandin F2Α (1984), Jeffrey S. Stevenson, M.K. Schmidt, Edward P. Call

Kansas Agricultural Experiment Station Research Reports

Stage of the estrous cycle, time of insemination, and season of the year were examined for their influence on estrus and fertility of 223 Holstein heifers after prostaglandin F2α(PGF). Heifers given PGF early in the estrous cycle (days 5 to 8 where estrus = day 0) had shorter intervals (by 11 hr) to heat than heifers given PGF later in the cycle (days 14 to 16). Heats also were more closely synchronized for heifers treated early in the cycle. Season of the year had no effects on the interval to estrus or on proportion of heifers observed in heat. Conception …

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Effect Of Niacin Supplementation On Milk Production And Ketosis Of Dairy Cattle (1984), G. Dufva, E. Bartley, A. Dayton, D. Riddell Jan 1984

Effect Of Niacin Supplementation On Milk Production And Ketosis Of Dairy Cattle (1984), G. Dufva, E. Bartley, A. Dayton, D. Riddell

Kansas Agricultural Experiment Station Research Reports

Two lactation trials were undertaken to evaluate the effect of a niacin supplement on milk production and 'the physiological symptoms of ketosis. Blood ketone and non-esterified fatty acid levels were lower and blood glucose concentrations higher in niacin-supplemented cows. These trends were exhibited regardless of whether supplementation began 2 wk prepartum or immediately after calving. A 6 g daily dose was found to be of equal or higher benefit than a 12 g supplement. Cows gi ven niacin consistently produced more milk than controls, though the difference was small.; Dairy Day, 1984, Kansas State University, Manhattan, KS, 1984;

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Evaluation Of Raw And Processed Full-Fat Soybeans For High-Producing Dairy Cows (1984), G.M. Ward, J.L. Morrill, M.B. Morrill, A.D. Dayton Jan 1984

Evaluation Of Raw And Processed Full-Fat Soybeans For High-Producing Dairy Cows (1984), G.M. Ward, J.L. Morrill, M.B. Morrill, A.D. Dayton

Kansas Agricultural Experiment Station Research Reports

Rations containing either soybean meal, raw full-fat soybeans, or processed soybeans were compared using 36 high-producing dairy cows in early lactation. The processed soybeans were heated in a California Pellet Milt Jet-Sploder for sufficient time (about 1 min) to produce beans with exit temperature of 340°F. The raw soybeans and heated soybeans were rolled before being"¢ mixed into the concentrate mixture. Alfalfa hay and concentrate were consumed ad libitum in a ratio of 35 % hay and 65 % concentrate. Milk production and percent protein in milk were significantly greater when cows were fed soybean meal or Jet-Sploded beans than …

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Bioavailability Of Alfalfa Calcium (1984), L.H. Harbers, G.M. Ward, A.D. Dayton Jan 1984

Bioavailability Of Alfalfa Calcium (1984), L.H. Harbers, G.M. Ward, A.D. Dayton

Kansas Agricultural Experiment Station Research Reports

The availability of oxalate and non-oxalate calcium in alfalfa was determined using a chick assay. Oxalate-bound calcium was found to contribute only 16% as much influence as nonoxalate calcium. The nonoxalate calcium in alfalfa was 18% more available than calcium carbonate (precipitated chalk).; Dairy Day, 1984, Kansas State University, Manhattan, KS, 1984;

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Relationship Between Production And Reproduction In 5,480 Holstein Herds Enrolled In The Midstates Processing Center (1984), Edward P. Call, Jeffrey S. Stevenson Jan 1984

Relationship Between Production And Reproduction In 5,480 Holstein Herds Enrolled In The Midstates Processing Center (1984), Edward P. Call, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Reproductive parameters were evaluated in 5,480 Holstein herds involving 335,673 cows to determine the reported negative genetic effect of production on reproduction. While higher producing herds had a slight decline in days to first bred, this effect was offset by a similar increase in services per conception. The greatest effect was seen in the percent of cows open and the average days open. It was concluded that managers of higher producing herds are more aware of the need to get cows bred back after calving and implement the necessary practices to minimize the percent of cows not yet serviced and …

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Development Of An Early Weaning Program For Dairy Calves (1984), J.L. Morrill, A.D. Dayton, A.J. Zmolek, M.A. Vitcenda Jan 1984

Development Of An Early Weaning Program For Dairy Calves (1984), J.L. Morrill, A.D. Dayton, A.J. Zmolek, M.A. Vitcenda

Kansas Agricultural Experiment Station Research Reports

After preliminary experiments, four trials were conducted to develop and test a new feeding program for calves. The program involves the use of a special feed (a prestarter) to encourage calves to eat dry feed and to provide high quality nutrients during the time of initial rumen development. Using this plan, calves were weaned at 2 weeks of age with good results.; Dairy Day, 1984, Kansas State University, Manhattan, KS, 1984;

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1984 Report Of Agricultural Research, Southeast Kansas Branch Station, R. W. Dougherty, K. W. Kelley, L. W. Lomas, J. L. Moyer, D. W. Sweeney Jan 1984

1984 Report Of Agricultural Research, Southeast Kansas Branch Station, R. W. Dougherty, K. W. Kelley, L. W. Lomas, J. L. Moyer, D. W. Sweeney

Kansas Agricultural Experiment Station Research Reports

Through annual research reports the Southeast Kansas Branch Experiment Station attempts to keep the area's consumers and producers of agricultural products informed on the Station's research accomplishments. In serving the area, we conduct research at fields located at Parsons, site of headquarters; at Mound Valley, the original. location of the Branch Station; and at Columbus, which has been in the Kansas State University research system for over 60 years. This report for 1983 covers five areas of research emphasis: Beef Cattle, Crops, Forages, Soil and Water Management, and Crop Varietal Development. We sincerely hope that it will be useful to …

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Effects Of Compudose® Implants On Performance Carcass, Meat Quality Traits And Serum Testosterone In Young Boars (1984), T Timmis, Michael E. Dikeman, Melvin C. Hunt, G Highfill, Jeffrey S. Stevenson, Robert H. Hines Jan 1984

Effects Of Compudose® Implants On Performance Carcass, Meat Quality Traits And Serum Testosterone In Young Boars (1984), T Timmis, Michael E. Dikeman, Melvin C. Hunt, G Highfill, Jeffrey S. Stevenson, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Implanting boar pigs at 100 lb with 24 mg of Compudose 200® (estradiol 17β) had no significant effect on "boar odor" in meat, rate of gain, feed efficiency, carcass leanness or meat quality traits. The presence of a 7 to 8 mo old gilt in the pen decreased rate of growth in both control and implanted boars, but contrary to our expectations did not increase the incidence of "boar odor".; Swine Day, Manhattan, KS, November 15, 1984

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Efficacy Of Ectrin® (Fenvalerate) For Sarcoptic Mange Control In Swine (1984), E L. Wooten, A B. Broce, D S. Pollmann Jan 1984

Efficacy Of Ectrin® (Fenvalerate) For Sarcoptic Mange Control In Swine (1984), E L. Wooten, A B. Broce, D S. Pollmann

Kansas Agricultural Experiment Station Research Reports

A trial was conducted to determine the efficacy of fenvalerate (Ectrin®) for control of sarcoptic mange mites in swine. Artificially infested pigs were treated with two sprayings of Ectrin at 0.05% concentration with 1 wk interval between sprayings. One week after the first spraying, mite numbers and clinical signs of mange had decreased in treated animals but remained elevated in infested-nontreated pigs. Four weeks after the first spraying (3 wk after the second spraying), no mites were found in scrapings from the Ectrin-treated pigs and the amount of scratching and rubbing in those pigs decreased compared with the infested- nontreated …

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Effect Of Particle Size And Surface Area Of Corn On Pig Performance And Nutrient Digestibility (1984), Jih-Fang Wu, G L. Allee Jan 1984

Effect Of Particle Size And Surface Area Of Corn On Pig Performance And Nutrient Digestibility (1984), Jih-Fang Wu, G L. Allee

Kansas Agricultural Experiment Station Research Reports

Two feeding trials and two digestion trials were conducted to evaluate the effects of particle size and surface area of corn on the performance and nutrient digestibility of weaning and finishing pigs. The effects of particle size on production rate and grinding efficiency also were evaluated. Production rate and grinding efficiency decreased as particle size decreased. Average daily gain was not influenced by particle size. Feed intake tended to decrease as particle size decreased with the lowest feed intake on the fine partice size diet. Feed efficiency tended to improve as particle size decreased. The incidence of ulceration in the …

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Digestibility Of Fat Sources By Growing Pigs (1984), De-Fa Li, G L. Allee Jan 1984

Digestibility Of Fat Sources By Growing Pigs (1984), De-Fa Li, G L. Allee

Kansas Agricultural Experiment Station Research Reports

A digestion trial was conducted with 12 crossbred barrows averaging 48 lb to evaluate the digestibility of various fat sources. Fat sources evaluated were soybean oil, a 85% dry fat product composed of animal and vegetable fat, and a 80% dry fat product made by encapsulating choice white grease with casein. The control diet was a 18% crude protein corn-soybean meal diet with 10% cornstarch. Fat sources were added to the basal diet at the expense of cornstarch to supply 8% added fat. A crossover design was used with three pigs per diet in each of two periods. Digestibility of …

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Comparison Of Feeding Systems For Finishing Swine (1984), J Vargas Vargas, Robert H. Hines Jan 1984

Comparison Of Feeding Systems For Finishing Swine (1984), J Vargas Vargas, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Two feeding trials using 240 finishing pigs were conducted to evaluate meal feeding and ad libitum dry and wet feeding. Growth rate was significantly improved by wet feeding in trial 1. Overall, a 5% improvement in growth rate occurred by wet feeding in both trials when compared with meal-feeding or ad libitum dry feeding. Feed efficiency was similar for pigs fed meals, and ad libitum dry or wet diets.; Swine Day, Manhattan, KS, November 15, 1984

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Time-Restricted Feeding Of Pigs: Social And Feeding Behavior (1984), J Vargas Vargas, J V. Craig, Robert H. Hines Jan 1984

Time-Restricted Feeding Of Pigs: Social And Feeding Behavior (1984), J Vargas Vargas, J V. Craig, Robert H. Hines

Kansas Agricultural Experiment Station Research Reports

Twenty finishing pigs were used to evaluate effects of time-restricted feeding on social interactions and feeding patterns of pigs at feeding time. Correlation analysis for pairs of traits, involving feeding activities, social interactions, and rate of gain indicate that more aggressive pigs went first to the feeder, fed more frequently, and gained faster. Although on continuous artificial lighting, timed-fed pigs displayed more feeding and aggressive behavior during day light hours.; Swine Day, Manhattan, KS, November 15, 1984

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Lecithin Addition To Starter Pig Diets With And Without Added Fat And Whey (1984), D M. Van Wormer, D S. Pollmann Jan 1984

Lecithin Addition To Starter Pig Diets With And Without Added Fat And Whey (1984), D M. Van Wormer, D S. Pollmann

Kansas Agricultural Experiment Station Research Reports

A total of 316 crossbred weanling pigs were used in two studies to evaluate the effect of the addition of edible-grade, unbleached soy lecithin on growth in starter pig diets with and without added fat and/or dried whey. Addition of fat to a corn-soybean meal diet improved (P<.05) feed efficiency but addition of lecithin did not affect performance. When lecithin and fat were added in combination, average daily gain was less (P<.05) than for diets without added fat. This may be due to a high level of undigestible fat having a limiting effect on intake and consequently decreasing gains. A low level of lecithin (1.5%) in diets without whey gave approximately the same response as a 4% fat diet without whey thus making lecithin a possible fat substitute should, it be economically feasible.; Swine Day, Manhattan, KS, November 15, 1984

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Methionine Addition To Weanling Pig Diets (1984), Tze-Chow Ong, G L. Allee Jan 1984

Methionine Addition To Weanling Pig Diets (1984), Tze-Chow Ong, G L. Allee

Kansas Agricultural Experiment Station Research Reports

Three growth trials and two metabolism trials utilizing 236 pigs were conducted to evaluate the effects of amino acids additions to weanling pig diets and to estimate the methionine requirement of weanling pigs using growth and nitrogen retention as criteria. From these results, it was concluded that the total sulfur amino acid requirement of weanling pigs does not exceed 0.56% of the diet. Addition of methionine to a lysine supplemented 18% protein corn or sorghum-soybean meal did not improve pig performance.; Swine Day, Manhattan, KS, November 15, 1984

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