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Kansas Agricultural Experiment Station Research Reports

1994

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Articles 1 - 30 of 115

Full-Text Articles in Life Sciences

Commercial Cattle Producers: Bull Selection Criteria, D.D. Simms, J.M. Geske, R.P. Bolze Jan 1994

Commercial Cattle Producers: Bull Selection Criteria, D.D. Simms, J.M. Geske, R.P. Bolze

Kansas Agricultural Experiment Station Research Reports

A survey of 312 commercial cattle producers was conducted to determine the relative importance of selection criteria used in buying bulls. Calving ease was a major consideration of a high percentage of producers, and individual performance was being emphasized more than expected progeny differences (EPDs). Only 23% of the producers included EPDs in their first three selection criteria. Visual appraisal focused on structural soundness, length, and muscling.


Agronomic Traits And Growing Cattle Performance For Whole-Plant Corn And Forage And Grain Sorghum Silages, B.S. Dalke, R.N. Jr. Sonon, D.L. Holthaus, L. Pfaff, K.K. Bolsen, Matthew A. Young Jan 1994

Agronomic Traits And Growing Cattle Performance For Whole-Plant Corn And Forage And Grain Sorghum Silages, B.S. Dalke, R.N. Jr. Sonon, D.L. Holthaus, L. Pfaff, K.K. Bolsen, Matthew A. Young

Kansas Agricultural Experiment Station Research Reports

Agronomic and cattle performance traits were measured for the following silages produced in 1992: irrigated Pioneer 3377 corn, ensiled with or without Biotal® silage inoculant; DeKalb 42Y grain sorghum; and Cargill 200F, Pioneer 947, DeKalb FS-5 and FS-25E, and Northrup King (NK) 300 forage sorghums. All sorghums were grown under dryland conditions. The irrigated corn had the highest whole-plant dry matter (DM) and grain yields, and NK 300 and DeKalb FS-5 had the highest whole-plant DM yields among the sorghums. NK 300 also had the highest grain yield among the sorghums; DeKalb FS-5 and FS-25E had the lowest. Steers fed ...


Level Of Urea In High Grain Diets: Nutrient Digestibility, Microbial Protein Production, And Rumen Metabolism, C.T. Milton, Robert T. Brandt Jr. Jan 1994

Level Of Urea In High Grain Diets: Nutrient Digestibility, Microbial Protein Production, And Rumen Metabolism, C.T. Milton, Robert T. Brandt Jr.

Kansas Agricultural Experiment Station Research Reports

Four ruminally and duodenally fistulated steers (1228 lb) were used in a 4 x 4 Latin square design to evaluate the effects of dietary urea level on nutrient digestion, microbial protein production, and rumen metabolism of steers fed a rolled corn diet without urea or with .5, 1.0, or 1.5% urea (dry matter basis) and no other supplemental protein. Rumen digestibilities increased 33% for organic matter and 25% for starch with the first increment (.5%) of urea, but little or no improvement occurred with subsequent urea additions. Apparent rumen nitrogen digestibility decreased linearly, whereas total tract and true ...


Source And Level Of Crude Protein For Implanted Finishing Steers, C.T. Milton, Robert T. Brandt Jr. Jan 1994

Source And Level Of Crude Protein For Implanted Finishing Steers, C.T. Milton, Robert T. Brandt Jr.

Kansas Agricultural Experiment Station Research Reports

One hundred medium-framed, crossbred steers (738 lb) were used to compare non-protein nitrogen to natural protein supplementation of finishing diets for implanted steers. Diets were formulate d to contain 11.5 or 13.5% crude protein and were supplemented with either urea or soybean meal. A fifth treatment of cottonseed meal supplementation (13.5% dietary crude protein) was added to evaluate differences between natural sources of rumen degradable protein. Steers were implanted with Revalor® and fed for 132 days. During the first 70 days, daily gain and feed efficiency were improved 8.8 and 6.1%, respectively, for steers supplemented ...


D- Vs L-Methionine Utilization By Growing Steers, C.G. Campbell, G. St. Jean, Evan C. Titgemeyer Jan 1994

D- Vs L-Methionine Utilization By Growing Steers, C.G. Campbell, G. St. Jean, Evan C. Titgemeyer

Kansas Agricultural Experiment Station Research Reports

Increasing the amino acid supply to the small intestine of growing cattle can increase performance, if specific amino acids are limiting. Although this can be accomplished by feeding rumen undegradable protein, a more economical approach may be supplementing only those amino acids that actually limit performance, but in a form that will bypass the rumen. Methionine (MET) is thought to be a limiting amino acid for growing cattle. DL-MET, a 50 :50 mixture of natural methionine (L-MET) and the unnatural optical isomer (D-MET) is used widely in monogastric rations. Ruminally protected DL-methionine is also available for cattle; however, little information ...


Supplemental Chromium And Revaccination Effects On Performance And Health Of Newly Weaned Calves, S.A. Lindell, Robert T. Brandt Jr., J. Ernest Minton, Frank Blecha, Gerald L. Stokka, C.T. Milton Jan 1994

Supplemental Chromium And Revaccination Effects On Performance And Health Of Newly Weaned Calves, S.A. Lindell, Robert T. Brandt Jr., J. Ernest Minton, Frank Blecha, Gerald L. Stokka, C.T. Milton

Kansas Agricultural Experiment Station Research Reports

Two trials were conducted to evaluate the effects of chromium (Cr) supplementation (4 mg/hd/day in a yeast form) or no supplementation, with or without revaccination with a modified live viral vaccine at 9 days postweaning o n performance, health, and ability to withstand an IBR challenge infection. In Trial 1, Cr supplementation had no effect on performance of newly weaned calves in a 28-day receiving study, but reduced the incidence of respiratory disease by 37%. Revaccinati on depressed dry matter intake and had no effect on animal health. In trial 2, blood plasma levels of cortisol and ACTH ...


Effects Of Supplemental Trace Minerals And Prevaccination On Stressed Calves, S.A. Lindell, Robert T. Brandt Jr., Gerald L. Stokka, S.M. Gramlich, C.T. Milton Jan 1994

Effects Of Supplemental Trace Minerals And Prevaccination On Stressed Calves, S.A. Lindell, Robert T. Brandt Jr., Gerald L. Stokka, S.M. Gramlich, C.T. Milton

Kansas Agricultural Experiment Station Research Reports

Two trials were conducted to evaluate the effect of high dietary levels of trace minerals on performance and health of stressed calves. In trial 1, 221 Brahman crossbred steers (674 l b, 1/8 to 1/4 Brahman) were used to evaluate the effect of copper (Cu) and zinc (Zn) supplementation on performance and immune response. The steers were shipped from northern Texas to the KSU Beef Research Un it with an 18-hour transit time. Receiving diets were formulated to contain 1) NRC-recommended levels of Cu and Zn or 2) 4 times re commended levels. In trial 2, 112 Angus ...


Implanting Suckling Heifer Calves: Growth And Subsequent Performance, D.D. Simms Jan 1994

Implanting Suckling Heifer Calves: Growth And Subsequent Performance, D.D. Simms

Kansas Agricultural Experiment Station Research Reports

A total of 361, suckling, heifer calves was used over a 2-year period to assess the effects of implanting with either Ralgro® or Synovex-C® on growth and subsequent performance as replacement females. Both implants increased (P<.01 ) weaning weights over that of controls, with the weight increase being retained by yearlings. Pelvic area also was increased at 1 year of age by both implants, with Synovex-C producing larger (P<.01) pelvic areas than Ralgro. However, just prior to calving, body weight and pelvic area were similar among treatments. Uterine scores, cycling activity prior to breeding, percentage exhibiting estrus, and pregnancy percentage were similar for all treatments. Implanting tended to reduce first-service conception rates. Synovex-C implanted heifers calved later (P<.05) than Ralgro-implanted heifers and, consequently, their calves tended to be lighter at weaning. Levels of calving difficulty we r e similar for all treatments. In summary, implanting suckling heifer calves at 2-4 months of age will increase growth rate, but this research indicates some potential for reduction in reproductive performance.


The Effect Of Feeding Different Levels Of Aureomycin® In A Mineral Mixture To Stocker Cattle Grazing Native Grass, F.K. Brazle Jan 1994

The Effect Of Feeding Different Levels Of Aureomycin® In A Mineral Mixture To Stocker Cattle Grazing Native Grass, F.K. Brazle

Kansas Agricultural Experiment Station Research Reports

Two hundred and forty-three mixed breed steers were allotted to four treatments with two pastures per treatment. Treatments consisted of a free-choice mineral supplement alone or with Aureomycin® added to provide 150, 300, or 450 mg/hd/day. Gain was similar for all four treatments. The percentage of cattle with eye problems was reduced in pastures where 150 and 450 mg of Aureomycin were consumed daily; however, the incidence in the 300 mg/hd/day group was as high as in the control group.


Effect Of Lasalocid And Length Of Morning Grazing On Weight And Shrink Of Steers Grazing Bromegrass Pastures, K.P. Coffey, F.K. Brazle, Joseph L. Moyer Jan 1994

Effect Of Lasalocid And Length Of Morning Grazing On Weight And Shrink Of Steers Grazing Bromegrass Pastures, K.P. Coffey, F.K. Brazle, Joseph L. Moyer

Kansas Agricultural Experiment Station Research Reports

A total of 72 mixed breed steer s from two sources was used in an experiment to determine the effect of lasalocid and length of morning grazing prior to weighing on weight and shrink of steers grazing smooth bromegrass pastures. Steers were divided into eight groups and weighed at either 6, 7, 8, or 9 a.m. on 4 separate days. Half of the steers received a control mineral mixture and half received a mineral mixture containing lasalocid. Weights of purchased steers having an excitable disposition were not affected (P>.10) by length of morning grazing prior to weighing. However ...


Effects Of Sorghum Hybrid And Grain Supplementation On The Utilization Of Silage-Based Rations For Growing Cattle, B.S. Dalke, K.K. Bolsen, R.N. Jr. Sonon, D.L. Holthaus, Matthew A. Young Jan 1994

Effects Of Sorghum Hybrid And Grain Supplementation On The Utilization Of Silage-Based Rations For Growing Cattle, B.S. Dalke, K.K. Bolsen, R.N. Jr. Sonon, D.L. Holthaus, Matthew A. Young

Kansas Agricultural Experiment Station Research Reports

Three whole-plant sorghum silages, each with or without 25% added rolled grain sorghum were fed to six medium-framed, ruminally cannulated steers in a 6 x 6 Latin square design. The grain sorghum silage rations (DeKalb 42Y) had the highest DM, OM, and ADF digestibilities; the late-season forage sorghum silage rations (DeKalb FS 25E), the lowest. Digestibility of NDF tended to be highest for the grain sorghum silage, but starch digestibilities were not affected by sorghum hybrid. Ruminal ammonia, acetate, propionate, butyrate, and total VFA concentrations were highest for the grain sorghum silage rations. Grain supplementation increased DM and OM digestibilities ...


Influence Of Dietary Energy Levels On Reproductive Function And Fertility In Yearling Beef Heifers, S.D. Utter, L.R. Corah Jan 1994

Influence Of Dietary Energy Levels On Reproductive Function And Fertility In Yearling Beef Heifers, S.D. Utter, L.R. Corah

Kansas Agricultural Experiment Station Research Reports

Fifty-nine heifers were allotted to be fed at two different energy levels. One group gained 1.77 lb/hd/day, and the other 1.25 lb/hd/day. Estrus was synchronized with the MGA/prostaglandin system. After MGA removal, ovarian development was monitored daily by ultrasound (10 per group) until estrous was detected following the PGF injection. Heifers were inseminated artificially based on estrus behavior. Faster gaining heifers had higher final body condition scores and greater changes in body condition score. The high energy diet caused a slight (P=.11) decrease in AI pregnancy rate for purebred heifers.


Among-Breed Estimates Of Heritability For Birth Weight, Weaning Weight, And Mature Cow Weight, K.M. Andries, R.R. Schalles, D.E. Franke Jan 1994

Among-Breed Estimates Of Heritability For Birth Weight, Weaning Weight, And Mature Cow Weight, K.M. Andries, R.R. Schalles, D.E. Franke

Kansas Agricultural Experiment Station Research Reports

Data from a rotational crossbreeding study was used to calculate among-breed heritabilities of birth weight (BWT), weaning weight (WWT), and mature cow weight at 5 years of age. The among-breed estimates were higher than previous within-breed estimates because of the inclusion of genetic differences between breeds. Maternal effects for BWT and WWT also were calculated. These estimates allow for comparisons among breeds and for the eventual calculation of EPDs for hybrid cattle.


Use Of Oxyrase® Enzyme To Enhance Recovery Of Escherichia Coli O157:H7 From Culture Media And Ground Beef, H. Thippareddi, K. Kone, Randall K. Phebus, Daniel Y.C. Fung, Curtis L. Kastner Jan 1994

Use Of Oxyrase® Enzyme To Enhance Recovery Of Escherichia Coli O157:H7 From Culture Media And Ground Beef, H. Thippareddi, K. Kone, Randall K. Phebus, Daniel Y.C. Fung, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

Escherichia coli O157:H7 is a bacterium that has caused great concern in the meat and food industry during the last few years because of several, well-publicized, disease outbreaks, including the incident at the Jackin- the-Box fast food chain in Seattle, Washington. The organism can cause severe sickness and even death in certain population groups. To better assure meat safety, federal meat inspection is focusing on developing rapid methods to detect this disease agent and others. Oxyrase is a commercially available enzyme that can accelerate the growth of some bacteria. Current techniques for isolation and culturing of E. coli O157 ...


Effect Of Lactic Acid Sprays On Shelf Life And Microbiological Safety Of Beef Subprimals, R.K. Prasai, L.E. Mease, L.R. Vogt, Donald H. Kropf, Daniel Y.C. Fung, Curtis L. Kastner Jan 1994

Effect Of Lactic Acid Sprays On Shelf Life And Microbiological Safety Of Beef Subprimals, R.K. Prasai, L.E. Mease, L.R. Vogt, Donald H. Kropf, Daniel Y.C. Fung, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

Beef loins were sprayed with 1.5% lactic acid either before or after vacuum storage, both before and after vacuum storage, and before vacuum packaging followed by a water spray after storage. We stored treated loins at either 30 ÌŠF or 36 ÌŠF for up to 126 days in vacuum packages. Nonsprayed or nonstored loins served as controls. Total aerobic plate counts (APCs) and tests for presence/absence of two important foodborne pathogens, Salmonella spp. and Listeria monocytogenes, were conducted during storage. Acid spraying prior to vacuum packaging was more effective in reducing bacterial contamination than spraying after storage. However ...


Evaluation Of Enzyme-Modified Wheat Gluten As A Component Of Milk Replacers For Calves, H. Terui, J.L Morrill, James J. Higgins Jan 1994

Evaluation Of Enzyme-Modified Wheat Gluten As A Component Of Milk Replacers For Calves, H. Terui, J.L Morrill, James J. Higgins

Kansas Agricultural Experiment Station Research Reports

Holstein bull calves (n=120) were assigned randomly to be fed either of five milk replacers (MR) that contained different amounts of crude protein (CP) and protein from wheat gluten (WG) for 6 weeks. Weight gains of calves fed MR containing 20% CP, with either 0, 30, or 50% of the protein coming from WG, were similar, as were gains of calves fed MR containing 18% CP with either none or 33% of the protein from WG. When WG supplied 33% of the protein, calves fed 18% CP gained as much as calves fed MR containing 20% CP. Calves fed ...


Raising Dairy Heifers: A Business, J.L. Morrill Jan 1994

Raising Dairy Heifers: A Business, J.L. Morrill

Kansas Agricultural Experiment Station Research Reports

On many dairy farms, improvement is needed in raising replacement heifers, especially in providing proper nutrition and management to allow for freshening at 23 to 24 mo of age at a desirable size. With larger herds, there is a trend toward more specialization, which may (but may not) result in more attention to, or responsibility for, proper care and management of the heifer. In some cases, the heifers are raised by a person at a location away from the dairy farm on which they originated, and contract raising of dairy replacements has several potential advantages and disadvantages. These are discussed ...


Management Analysis Of Dairy Cow Herd Enterprises In The Kansas Farm Management Association, F.D. Delano, Michael R. Langemeier Jan 1994

Management Analysis Of Dairy Cow Herd Enterprises In The Kansas Farm Management Association, F.D. Delano, Michael R. Langemeier

Kansas Agricultural Experiment Station Research Reports

Actual records of dairy cow herd enterprises from Kansas Farm Management Association farms over the past 4 years have shown an increase in returns over variable costs from $17,900 to $27,000 per farm for a 100-cow dairy herd in favor of herds with higher milkproducing cows. Cost per hundred weight of milk produced per cow decreased for the higher-producing herds compared with lowerproducing herds, even though total cost per cow increased. In 1993, for every extra $1.00 spent on feed and other variable costs, the higher producing herds earned $2.34. This was a 234% return per ...


Influence Of Source Of Calories On Composition And Production Of Milk, A.J. Gallegos, John E. Shirley Jan 1994

Influence Of Source Of Calories On Composition And Production Of Milk, A.J. Gallegos, John E. Shirley

Kansas Agricultural Experiment Station Research Reports

Wheat and tallow increased milk production in a complementary fashion when added to a milo-based grain mix.; Dairy Day, 1994, Kansas State University, Manhattan, KS, 1994;


Evaluation Of Milk Replacers Containing New Protein Soruces And A Probiotic, J.L Morrill, J.F. Laster, J.M. Morrill, A.M. Feyerherm Jan 1994

Evaluation Of Milk Replacers Containing New Protein Soruces And A Probiotic, J.L Morrill, J.F. Laster, J.M. Morrill, A.M. Feyerherm

Kansas Agricultural Experiment Station Research Reports

The objectives of this experiment were to evaluate bovine and porcine plasma proteins as sources of protein for calf milk replacers and to evaluate a commercial probiotic. Four replacers were compared; an all milk protein control, two replacers with 25% of protein from bovine plasma protein or porcine plasma protein, and a replacer identical to the control except that it contained a probiotic (Biomate FG, Chr. Hansen's Laboratory) instead of antibiotic. The 120 bull calves (7 ± 3 days of age) were divided into four equal groups, and calves from each group were fed 4 quarts per day of one ...


Influence Of Spray-Dried Plasma Source On Growth Performance Of Weanling Pigs, M M. Rantanen, J W. Smith Ii, B T. Richert, K G. Friesen, L E. Russell, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach Jan 1994

Influence Of Spray-Dried Plasma Source On Growth Performance Of Weanling Pigs, M M. Rantanen, J W. Smith Ii, B T. Richert, K G. Friesen, L E. Russell, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach

Kansas Agricultural Experiment Station Research Reports

Six hundred twenty six pigs (initially 9 lb and 13.2 d of age) were used in a 28-d growth trial to determine the effect of spraydried porcine (SDPP), spray-dried bovine (SDBP), and low-ash porcine plasma (LAPP) on growth performance in the early-weaned pig. Pigs were allotted by weight to one of 10 dietary treatments with 8 to 10 pigs per pen and 7 replicate pens per treatment. The control diet was corn-soybean meal-based and contained 14.44% dried skim milk with no plasma added. Each plasma source (2, 4, and 6%) replaced dried skim milk in the control diet ...


Alcohol- And Water-Extracted Soy Protein Concentrates For Early-Weaned Pigs, L L. Burnham, M R. Cabrera, I H. Kim, Robert H. Hines, Joe D. Hancock Jan 1994

Alcohol- And Water-Extracted Soy Protein Concentrates For Early-Weaned Pigs, L L. Burnham, M R. Cabrera, I H. Kim, Robert H. Hines, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

A total of 72 weanling pigs (average initial wt of 7 lb and 10 d of age) was used in a 38-d growth assay to determine the nutritional value of alcohol- and water-extracted soy protein concentrates. Pigs were sorted by sex, weight, and ancestry and assigned to 12 pens with six pigs/pen. The soy preparations were fed in a nursery regimen with Phase I (d 0 to 10), Phase II (d 10 to 24), and Phase III (d 24 to 38) diets. Pigs and feeders were weighed at initiation and conclusion of each phase, with fecal samples collected on ...


Sodium Sulfite And Extrusion Affect The Nutritional Valve Of Soybean Products For Nursery Pigs, L L. Burnham, I H. Kim, Terry L. Gugle, Robert H. Hines, Joe D. Hancock Jan 1994

Sodium Sulfite And Extrusion Affect The Nutritional Valve Of Soybean Products For Nursery Pigs, L L. Burnham, I H. Kim, Terry L. Gugle, Robert H. Hines, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

A total of 150 weanling pigs (14.2 lb avg body wt) was used in a 28-d growth assay to determine the effects of using sodium sulfite as an extrusion enhancer for soy products. Treatments were: 1) soybean meal (SBM), 2) SBM + sodium sulfite, 3) extruded SBM, 4) SBM extruded with sodium sulfite, 5) extruded whole soybeans, and 6) whole soybeans extruded with sodium sulfite. For d 0 to 14, pigs fed SBM had greater average daily feed intake (ADFD, although they had poorer efficiency of gain (F/G) than pigs fed the extruded soy products. Also, pigs fed sodium ...


Roasting And Extruding Affect Nutrient Utilization From Soybeans In 10- And 20-Lb Pigs, I H. Kim, Terry L. Gugle, Robert H. Hines, Joe D. Hancock Jan 1994

Roasting And Extruding Affect Nutrient Utilization From Soybeans In 10- And 20-Lb Pigs, I H. Kim, Terry L. Gugle, Robert H. Hines, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

Ninety nursery pigs were used in two metabolism experiments to determine the effects of roasting and extruding on the nutritional value of Williams 82 soybeans with (+K) and without (-K) gene expression for the Kunitz trypsin inhibitor. Treatments for both experiments were: 1) soybean meal; 2) +K roasted; 3) +K extruded; 4) -K roasted; and 5) -K extruded. The roasting and extrusion treatments were accomplished with a Roast-A-Tron8 roaster and an InstaPr0 8 extruder. Diets were the soybean preparations (96.5% of the diet) with only vitamins and minerals added as needed to meet or exceed NRC requirements. Daily feed ...


The Effects Of Increasing Dietary Lysine In The Phase Iii Starter Diet On Growth Performance Of Segregated Early-Weaned Pigs, K Q. Owen, J R. Bergstrom, K G. Friesen, J W. Smith Ii, B T. Richert, Robert D. Goodband, Jim L. Nelssen, Michael D. Tokach Jan 1994

The Effects Of Increasing Dietary Lysine In The Phase Iii Starter Diet On Growth Performance Of Segregated Early-Weaned Pigs, K Q. Owen, J R. Bergstrom, K G. Friesen, J W. Smith Ii, B T. Richert, Robert D. Goodband, Jim L. Nelssen, Michael D. Tokach

Kansas Agricultural Experiment Station Research Reports

One hundred forty-four high-health, high-lean growth barrows were used to determine the dietary lysine requirement to maximize growth performance from 40 to 75 lb. The experiment was designed as a randomized complete block, with blocks established on initial weight. Prior to the start of the study, pigs were fed a common Phase II diet (1.4% lysine) for 14 d. After the 14 d acclimation period, pigs were allotted to each of six dietary treatments, ranging from .75 to 1.25% digestible lysine (.91 to 1.49% total dietary lysine). Pigs were housed in pens of four, with six replicate ...


Appropriate Methionine:Lysine Ratio For The Segregated Early-Weaned Pig, K Q. Owen, B T. Richert, K G. Friesen, Robert D. Goodband, Jim L. Nelssen, Michael D. Tokach, Steven S. Dritz Jan 1994

Appropriate Methionine:Lysine Ratio For The Segregated Early-Weaned Pig, K Q. Owen, B T. Richert, K G. Friesen, Robert D. Goodband, Jim L. Nelssen, Michael D. Tokach, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 350 crossbred pigs (9.0 ± 2 d old and 8.4 lb +f- 2.5 BW) was used to determine the appropriate methionine: lysine ratio in diets for the segregated early-weaned pig. Two lysine levels (1.8 and 1.4%) and five methionine levels within each lysine level were used in a 2 x 5 factorial arrangement. Methionine: lysine ratios ranged from 21.5 to 33.5 %. From d 0 to 21 postweaning, all diets contained 25%dried whey, 12% lactose, 7.5% spray dried porcine plasma, 6.0% select menhaden fish meal, and 1.75 ...


Dietary Lysine Requirements Of Segregated Early-Weaned Pigs, K Q. Owen, B T. Richert, K G. Friesen, J W. Smith Ii, J R. Bergstrom, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz Jan 1994

Dietary Lysine Requirements Of Segregated Early-Weaned Pigs, K Q. Owen, B T. Richert, K G. Friesen, J W. Smith Ii, J R. Bergstrom, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 320 (160 barrows and 160 gilts) 14- to 18-d-old pigs (initially 10.2 ± 2.2 lb) was used to determine the optimal level of dietary lysine needed for the segregated early-weaned pig. Two diet formulation methods were used with six dietary lysine levels within each formulation method, resulting in a 2 X 6 factorial arrangement of treatments. The first formulation method consisted of a basal diet that contained 1.95% lysine. Increasing levels of cornstarch replaced L-lysine to achieve the other five dietary treatments (1.2, 1.35, 1.50, 1.65, and 1.80% dietary ...


Influence Of Diet Complexity And Weaning Age On Carcass Characteristics And Growth Performance From Weaning To Market, T Signer, K Q. Owen, R M. Musser, J W. Smith Ii, B T. Richert, Steven S. Dritz, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen Jan 1994

Influence Of Diet Complexity And Weaning Age On Carcass Characteristics And Growth Performance From Weaning To Market, T Signer, K Q. Owen, R M. Musser, J W. Smith Ii, B T. Richert, Steven S. Dritz, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A total of 180 barrows (initially 7.4 or 11.9 lb and 9 or 19 d of age) was used in a growth assay to determine the influence of two weaning ages and three diet complexity sequences on growth performance and carcass characteristics. The growth performance of pigs used in this trial was excellent, as shown by the range of average age at 240 lb from 144 to 149.7 d. Growth performance was similar regardless of weaning age. Thus, when health status and environment are similar, pigs weaned at 19 d of age can attain a weight of ...


Determining The Valine Requirement Of The Mgr-Producing Lactating Sow, B T. Richert, J E. Pettigrew, R D. Walker, L J. Johnston, S A. Blum, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen Jan 1994

Determining The Valine Requirement Of The Mgr-Producing Lactating Sow, B T. Richert, J E. Pettigrew, R D. Walker, L J. Johnston, S A. Blum, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

Two hundred-three large white x Landrace or large white x Chester White x Landrace sows (40 or 41/treatment, avg parity 3.7) were used in a 26 d lactation experiment to determine the valine requirement of high-producing sows. All diets were formulated to .9% lysine with all amino acids other than valine formulated to be at least 110% of their respective ratios relative to lysine. Synthetic valine replaced cornstarch to provide .75, .85, .95, 1.05, and 1.15% dietary valine. Corresponding valine:lysine ratios were 83, 94, 106, 117, and 128% of lysine. The experiment was conducted at ...


Nursery Growth Performance Of Intact Males And Barrows, M M. Rantanen, Robert H. Hines, Joe D. Hancock Jan 1994

Nursery Growth Performance Of Intact Males And Barrows, M M. Rantanen, Robert H. Hines, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

A total of 100 weanling pigs with an average initial body wt of 11.8 lb and average age of 17 d was used in a 38-d growth assay to determine the effect of castration on growth performance of nursery pigs. All pigs were fed the same Phase I, II, and III diets formulated to 1.6, 1.4, and 1.35% lysine, respectively. Data indicated no differences in growth performance between intact males and barrows in the first 38 d postweaning (12 to 48 lb).; Swine Day, Manhattan, KS, November 17, 1994