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Kansas Agricultural Experiment Station Research Reports

2001

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Articles 31 - 60 of 85

Full-Text Articles in Life Sciences

Effects Of Soybean Meal Particle Size On Growth Performance Of Nursery Pigs (2001), K R. Lawrence, C W. Hastad, M J. Webster, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz Jan 2001

Effects Of Soybean Meal Particle Size On Growth Performance Of Nursery Pigs (2001), K R. Lawrence, C W. Hastad, M J. Webster, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 360 pigs were used in two experiments to determine the effects of decreasing particle size of soybean meal on nursery pig performance. In Exp. 1, pigs were fed diets containing 34% extrudedexpelled soybean meal ground to 965, 742, or 639 microns. In Exp. 2, pigs were fed the same diet containing solvent extracted soybean meal ground to 1226, 797, or 444 microns. Decreasing soybean meal particle size did not influence pig growth performance in either study.; Swine Day, Manhattan, KS, November 15, 2001

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Comparison Of International Protein Corporation 740 Fish Meal And Special Select™ Menhaden Fish Meal In Nursery Pig Diets (2001), M G. Young, M Cici, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2001

Comparison Of International Protein Corporation 740 Fish Meal And Special Select™ Menhaden Fish Meal In Nursery Pig Diets (2001), M G. Young, M Cici, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

One hundred and seventy five pigs (initially weighing 14.1 lb and 17 + 2 d of age) were used in a 21-d growth assay to compare performance of pigs fed two sources of Menhaden fish meal. Overall, there was no difference in growth performance between the two fish meal sources. For the first 14 days ADG and F/G were improved by including fish meal in the diet and as the level increased from 2.5 to 5%. However, in the third week (day 14 to 21) of the trial there was no benefit in adding fish meal to the diet. These …

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The Optimal Threonine:Lysine Ratio To Maximize Growth Performance Of Nursery Pigs (2001), B W. James, J C. Woodworth, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2001

The Optimal Threonine:Lysine Ratio To Maximize Growth Performance Of Nursery Pigs (2001), B W. James, J C. Woodworth, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 210 pigs (initially 18.2 lb and 25 d of age) were used in a 21-d growth assay. The seven treatments consisted of a basal diet (14.1% CP) with increasing levels of threonine (45, 50, 55, 60, 65, and 70% of 1.07% apparent digestible lysine) and a negative control containing 0.97% lysine. Increasing dietary threonine improved feed efficiency; however, there was no improvement in growth performance between pigs fed 0.97 and 1.07% apparent digestible lysine. Therefore, these results suggest the requirement for apparent digestible threonine is approximately 60% of lysine for 18- to 40-lb pigs.; Swine Day, Manhattan, …

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Effects Of Ingredient And Whole Diet Irradiation On Nursery Pig Performance (2001), J C. Woodworth, M J. Webster, B W. James, D E. Real, Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 2001

Effects Of Ingredient And Whole Diet Irradiation On Nursery Pig Performance (2001), J C. Woodworth, M J. Webster, B W. James, D E. Real, Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two trials were conducted to determine the effects of irradiation of individual ingredients or the whole diet on growth performance in nursery pigs. The response was similar for both trials with pigs fed diets containing irradiated spray-dried animal plasma or soybean meal having increased (P<0.05) ADG compared with pigs fed the control diet with no irradiated ingredients or the complete diet that was irradiated. Also, ADFI (P<0.05) was higher for pigs consuming the diet with irradiated soybean meal compared with those fed the irradiated whole diet. Pigs fed irradiated spray-dried animal plasma also had superior F/G (P<0.05) compared with those fed diets containing irradiated microingredients or if all ingredients had been irradiated before manufacturing. Therefore, irradiation of certain feed ingredients can improve growth performance in nursery, whereas irradiation of all ingredients in the diet or the whole diet does not enhance performance.; Swine Day, Manhattan, KS, November 15, 2001

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Evaluating Cloves As A Potential Substitute For Antimicrobials In Nursery Pig Diets (2001), R G. Main, J Ernest Minton, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2001

Evaluating Cloves As A Potential Substitute For Antimicrobials In Nursery Pig Diets (2001), R G. Main, J Ernest Minton, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

We conducted two trials to evaluate the effects of feeding graded levels of cloves to weanling pigs as a substitute for antimicrobials. In the first trial, improvements in ADG were observed in pigs fed the lowest level of clove addition (0.5%) and for those fed carbadox (50 g/ton). The higher levels of clove inclusion (1.0% and 2.0%) tended to reduce feed intake. A second trial was conducted evaluating performance of pigs fed diets containing 0.125%, 0.25% and 0.5% cloves (a different batch than used in trial 1). The was no ADG improvement from added cloves as was observed in the …

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The Relationship Between Body Condition Score And Backfat In Gestating Sows (2001), M G. Young, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2001

The Relationship Between Body Condition Score And Backfat In Gestating Sows (2001), M G. Young, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Backfat and body condition score were measured on 731 sows in a commercial swine facility to assess the accuracy of feeding sows in gestation based on body condition score. Body condition score was poorly correlated (r2 = 0.19) with backfat thickness. For example, sows assessed with a body condition of 3 ranged in backfat from 0.3 to 0.9 in. (7.5 to 23 mm). This illustrates the need to find a more objective method of measuring body condition (such as ultrasound) in order to properly adjust feeding levels and thus reduce variation in backfat of sows.; Swine Day, Manhattan, KS, November …

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Interactive Effects Of Added L-Carnitine And Chromium Picolinate On Sow Reproductive Performance (2001), D E. Real, K Q. Owen, S Stoller, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz Jan 2001

Interactive Effects Of Added L-Carnitine And Chromium Picolinate On Sow Reproductive Performance (2001), D E. Real, K Q. Owen, S Stoller, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 599 sows were used to determine the effects of added L-carnitine and/or chromium picolinate on reproductive performance. Experimental treatments were arranged in a 2 × 2 factorial with main effects of added L-carnitine (0 or 50 ppm) and chromium picolinate (0 or 200 ppb). Starting on the first day of breeding, sows were provided a daily top dress containing the carnitine and(or) chromium along with the standard gestation diet. Dietary treatments were administered daily through the initial gestation, lactation, and through a second gestation period (2 parities). During the first parity, there was a carnitine × chromium …

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A Comparison Of Different Particle Size Analysis Techniques (2001), A L. Baldridge, T L. Stainbrook, J C. Woodworth, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband Jan 2001

A Comparison Of Different Particle Size Analysis Techniques (2001), A L. Baldridge, T L. Stainbrook, J C. Woodworth, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

In this study, we compared different methods of testing particle size of ground corn. Forty-four corn samples were analyzed for particle size with a Ro-Tap tester equipped with a 13-sieve stack (53 to 3,350 :m tyler mesh screens). Mean particle size of the 44 samples ranged from 422 to 1,143 :m. These samples were then analyzed by placing 280 g on a #14 sieve (1,400 :m). The sieve was shaken by hand as the manufacturer recommended (one-sieve method). In a second procedure, samples were analyzed by placing 50 g of corn on a stack of three sieves: US #12 (1700 …

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Evaluation Of Ground Corn Germ As An Energy Source In Nursery Diets (2001), C W. Hastad, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 2001

Evaluation Of Ground Corn Germ As An Energy Source In Nursery Diets (2001), C W. Hastad, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two hundred eighty nursery pigs (initially 30.9 lb) were used in a 21-d growth assay to determine the energy value of ground corn germ relative to corn oil in nursery diets. Increasing dietary corn oil linearly decreased average daily feed intake and improved feed efficiency. However, pigs fed diets containing ground corn germ meal had similar gain and feed efficiency as those fed the corn-soybean meal diet without added fat. These results suggest that the added energy provided by corn germ is not utilized as well as that from corn oil.; Swine Day, Manhattan, KS, November 15, 2001

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Presynchronization Of Estrous Cycles In Dairy Cows Before Ovsynch + Cidr And Resynchronization Of Repeat Estrus Using The Cidr, S.Z. El-Zarkouny, J.A. Cartmill, A.M. Richardson, M.A. Medina-Britos Jan 2001

Presynchronization Of Estrous Cycles In Dairy Cows Before Ovsynch + Cidr And Resynchronization Of Repeat Estrus Using The Cidr, S.Z. El-Zarkouny, J.A. Cartmill, A.M. Richardson, M.A. Medina-Britos

Kansas Agricultural Experiment Station Research Reports

Postpartum anestrus is one of the major limitations to achieving acceptable pregnancy rates. The Ovsynch protocol is an excellent tool to improve reproductive efficiency of dairy cows because it can induce estrous cycles in anestrous cows. In the first experiment, administering two PGF2" injections to lactating dairy cows 14 days apart with the second injection given 12 days before the Ovsynch protocol increased (P<0.05) pregnancy rate by 10 percentage points in cycling and noncycling cows. Inserting a progesterone-releasing insert (CIDR) for 7 days during the Ovsynch protocol did not further increase pregnancy rates. In a second experiment, a resynchronization treatment consisting of a used CIDR inserted for 7 days from days 13 to 20 after insemination increased (P<0.05) embryo survival from day 30 to 58 by 11 percentage points but failed to increase overall rate of return to estrus and conception rate at the second AI (first eligible estrus after first AI).; Dairy Day, 2001, Kansas State University, Manhattan, KS, 2001;

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K-State Turfgrass Research 2001, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service Jan 2001

K-State Turfgrass Research 2001, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service

Kansas Agricultural Experiment Station Research Reports

With a summer noted for extended periods of temperatures over 100 °F, 2000 put turfgrass in our state through quite a test. As we enter the 2001 growing season, it's clear that some warmseason grasses were adversely affected by a cold winter. There is no rest for the weary attempting to growing quality turf in Kansas. This publication contains results of projects done throughout 2000 by K-State turfgrass researchers. You can see many of these projects in progress on August 2, 2001, at the Kansas Turfgrass Field Day at the John C. Pair Horticultural Research Center, Wichita. What questions can …

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Extralabel Mastitis Therapy: What Does It Mean?, J.R. Roberson Jan 2001

Extralabel Mastitis Therapy: What Does It Mean?, J.R. Roberson

Kansas Agricultural Experiment Station Research Reports

Extra-label drug use (ELDU) is needed to provide optimal therapy for ill dairy cattle. Proper ELDU requires cooperation and compliance between the veterinarian and producer to ensure that proper drug withdrawal times are observed.; Dairy Day, 2001, Kansas State University, Manhattan, KS, 2001;

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Effects Of A Biological Additive And Sealing Technique On The Aerobic Stability Of Whole-Plant Corn Silage, M.E. Uriarte, K.K. Bolson, Ronald V. Pope Jan 2001

Effects Of A Biological Additive And Sealing Technique On The Aerobic Stability Of Whole-Plant Corn Silage, M.E. Uriarte, K.K. Bolson, Ronald V. Pope

Kansas Agricultural Experiment Station Research Reports

The objectives of this whole-plant corn study were to determine the effects of a biological additive and sealing technique on yeast and mold populations; and to examine the relationship between the microbial and chemical changes in the silages during exposure to air. Whole-plant corn was harvested at 80% milkline (36% DM), and ensiled at a density of 43 lb of fresh matter/ft3. One-half of the pre-ensiled forage was treated with a biological additive (A), which contained a mixture of bacteria and enzymes (supplied by Alltech, Inc., Nicholasville, KY); the other one-half of the pre-ensiled forage was the untreated control (C). …

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Interactive Effects Between Paylean™ (Ractopamine Hcl) And Dietary Lysine On Finishing Pig Growth Performance, Carcass Characteristics And Tissue Accretion (2001), M J. Webster, Robert D. Goodband, D E. Real, J C. Woodworth, T A. Marsteller, Michael D. Tokach, John A. Unruh, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2001

Interactive Effects Between Paylean™ (Ractopamine Hcl) And Dietary Lysine On Finishing Pig Growth Performance, Carcass Characteristics And Tissue Accretion (2001), M J. Webster, Robert D. Goodband, D E. Real, J C. Woodworth, T A. Marsteller, Michael D. Tokach, John A. Unruh, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 432 pigs were used to evaluate the effects of Paylean and dietary lysine on finishing pig growth performance, carcass characteristics and tissue accretion. The 12 dietary treatments included Paylean (0, 4.5, and 9.0 g/ton) and 4 levels of lysine. For pigs fed no Paylean, lysine levels were 0.60, 0.80, 1.00, and 1.20%. For pigs fed 4.5 or 9.0 g/ton of Paylean, lysine levels were 0.80, 1.00, 1.20, and 1.40%. The results indicate that pigs fed Paylean need at least 1.0% dietary lysine to optimize growth, carcass parameters, and tissue accretion.; Swine Day, Manhattan, KS, November 15, 2001

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Interactive Effects Of Carnitine Status, Dietary Carnitine, And Added Fat On Growth Performance Of Weanling Pigs (2001), J C. Woodworth, K Q. Owen, J Lopez, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz Jan 2001

Interactive Effects Of Carnitine Status, Dietary Carnitine, And Added Fat On Growth Performance Of Weanling Pigs (2001), J C. Woodworth, K Q. Owen, J Lopez, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the interactive effects of carnitine status (with or without carnitine in diets fed to sows in gestation and lactation), and added fat and dietary carnitine in nursery diets on growth performance of weanling pigs. Feeding sows diets containing carnitine in gestation and lactation had no effect on growth performance of their pigs through 27-d after weaning. A carnitine by fat interaction (P<0.05) was observed for ADFI from d 0 to 7 and ADG from d 0 to 27 in Exp. 1 with pigs fed carnitine and no added fat appearing to have the best performance. In exp. 2, added carnitine had little effect on growth performance, whereas added fat improved feed efficiency. In conclusion, no benefit to growth performance was observed from adding both carnitine and fat to the diet of weanling pigs in these experiments.; Swine Day, Manhattan, KS, November 15, 2001

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Comparison Of Irradiated Feed And Food Grade Spray-Dried Animal Plasma On Nursery Pig Performance (2001), J C. Woodworth, C W. Hastad, Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 2001

Comparison Of Irradiated Feed And Food Grade Spray-Dried Animal Plasma On Nursery Pig Performance (2001), J C. Woodworth, C W. Hastad, Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the effects of initial bacterial concentrations in animal plasma on growth performance of weanling pigs. In Exp. 1 during the experimental period (d 0 to 14), pigs fed plasma had increased ADG and ADFI compared to pigs fed the control diet. Pigs fed the irradiated AP 920, as well as source 1 and source 2 regular (nonirradiated) food grade plasma had increased ADG compared to the control diet. Furthermore, pigs fed irradiated AP 920, regular AP 820, regular and irradiated source 1 food grade and regular source 2 food grade animal plasma had improved …

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Effects Of Vaccinating Beef Dams Precalving And Calves Preweaning With A Pasteurella Haemolytica Vaccine, L.E. Wankel, T.T. Marston, Gerald L. Stokka, J.R. Brethour, Timothy G. Rozell Jan 2001

Effects Of Vaccinating Beef Dams Precalving And Calves Preweaning With A Pasteurella Haemolytica Vaccine, L.E. Wankel, T.T. Marston, Gerald L. Stokka, J.R. Brethour, Timothy G. Rozell

Kansas Agricultural Experiment Station Research Reports

Our objective was to determine if vaccinating dams precalving and calves preweaning for Pasteurella haemolytica could effect serum antibody titers in dams, and the pre- and post-weaning health and performance of their calves. Vaccination increased serum antibody titers in multiparous cows, but not first-calf heifers. Precalving vaccination had minimal effects on mortality and morbidity of calves before or after weaning. Subsequent steer feedlot gains were unaffected by precalving and preweaning vaccinations and carcasses were not affected. However, heifers' weight gains were greater from weaning to one year of age when reared by vaccinated dams.

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Nutrient Composition Of Kansas Swine Lagoons And Hoop Barn Manure (2001), Joel M. Derouchey, Jim L. Nelssen, Michael D. Tokach, James P. Murphy, Robert D. Goodband, Steven S. Dritz Jan 2001

Nutrient Composition Of Kansas Swine Lagoons And Hoop Barn Manure (2001), Joel M. Derouchey, Jim L. Nelssen, Michael D. Tokach, James P. Murphy, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 236 lagoon and 35 hoop barn manure samples were collected during 2000 from Kansas swine operations to determine the effects of production phase and season of the year on their nutrient concentration. Lagoon analyses revealed that nitrogen concentrations were lower during the summer and fall seasons compared to winter and early spring. In addition, levels of nitrogen were highest in nursery, wean to finish, and finishing lagoons compared with sow and farrow-to-finish lagoons. Phosphorus levels for all lagoons increased from February until June, but then declined steadily throughout the remainder of the year. The concentration of phosphorus …

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Evaluation Of Different Copper Sources As A Growth Promoter In Swine Finishing Diets (2001), C W. Hastad, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz Jan 2001

Evaluation Of Different Copper Sources As A Growth Promoter In Swine Finishing Diets (2001), C W. Hastad, Jim L. Nelssen, Michael D. Tokach, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two trials were conducted to determine the effects of added copper from copper sulfate or copper chloride on performance of growing-finishing pigs. A total of 2,277 pigs with an initial weight of 71.6 lb were used in a commercial research facility in southwest Minnesota. Adding copper to the diet improved performance during the first two weeks in the finishing barn regardless of copper source or level. The results of these experiments indicate that low levels of copper chloride or copper sulfate (50 to 100 ppm) can be an effective and economical growth promoter when fed for the first two weeks …

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Evaluation Of Irradiation And Termin-8® Addition To Spray-Dried Animal Plasma, Base Mix And/Or Whole Diet On Growth Performance Of Nursery Pigs (2001), R E. Musser, W N. Cannon, Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 2001

Evaluation Of Irradiation And Termin-8® Addition To Spray-Dried Animal Plasma, Base Mix And/Or Whole Diet On Growth Performance Of Nursery Pigs (2001), R E. Musser, W N. Cannon, Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two studies were conducted to evaluate the effects of irradiation of spray-dried animal plasma and Termin-8 treatment to spray-dried animal plasma, base mix (specialty protein products, milk products, ground oat groats, soy flour, flow agent, vitamins, and minerals), or whole diet on nursery pig performance. Overall (d 0 to 14) in Exp. 1, pigs fed diets containing irradiated plasma had increased ADG and pigs fed Termin-8® treated plasma had increased ADG and ADFI compared to pigs fed diets with regular plasma or whole diets (containing either regular or irradiated plasma) treated with Termin-8. No differences in F/G were observed among …

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Effect Of Source And Irradiation Of Spray-Dried Animal Plasma On Nursery Pig Performance In A Commercial Facility (2001), Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 2001

Effect Of Source And Irradiation Of Spray-Dried Animal Plasma On Nursery Pig Performance In A Commercial Facility (2001), Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Weanling pigs (1,008; initially 13.5 lb and 18 ± 2 d of age) were used in a 13-d growth assay to determine the effects of irradiation of two different plasma sources on growth performance. From d 0 to 5 postweaning, pigs fed DuCoa® plasma had improved ADG and F/G compared to pigs fed AP 920 (American Proteins, Inc.). However, from d 5 to 13, pigs fed AP 920 had improved ADG and F/G compared to pigs fed DuCoa plasma. Overall, no differences in ADG, ADFI, or F/G were detected. In addition, no differences in ADG, ADFI, or F/G were detected …

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Comparison Of Bioaerosol Sampling Methods For Swine Barns (2001), B Z. Predicala, J E. Urban, S B. Jerez, Ronaldo G. Maghirang, Robert D. Goodband Jan 2001

Comparison Of Bioaerosol Sampling Methods For Swine Barns (2001), B Z. Predicala, J E. Urban, S B. Jerez, Ronaldo G. Maghirang, Robert D. Goodband

Kansas Agricultural Experiment Station Research Reports

Two bioaerosol sampling methods (Andersen sampler and filtration sampler) were compared. The two samplers were used to assess the bioaerosol loads in two swine finishing barns. They were similar in terms of the species of microorganisms sampled. The persistent strains of microorganisms were various species of the following genera: Staphylococcus, Pseudomonas, Bacillus, Listeria, Enterococcus, Nocardia, Lactobacillus, and Penicillium. However, the use of Andersen sampler resulted in significantly higher bioaerosol concentrations than the filtration sampler. Thus, it appears that filtration sampling can be used for a qualitative survey of bioaerosols in swine barns while the Andersen sampler is suitable for both …

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The Optimal Ratio Of Apparent Digestible Valine To Lysine To Maximize Growth Performance Of The Nursery Pig (2001), B W. James, J C. Woodworth, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2001

The Optimal Ratio Of Apparent Digestible Valine To Lysine To Maximize Growth Performance Of The Nursery Pig (2001), B W. James, J C. Woodworth, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 210 nursery pigs (initially 19.6 lb and approximately 28 d of age) were used in a 21-d growth assay to determine the optimal ratio of valine to lysine to maximize growth performance. The seven treatments consisted of a basal diet (14.2% CP; 1.07% apparent digestible lysine) with increasing ratios of valine:lysine (48, 53, 58, 63, 69, and 74%) and a negative control containing 0.97% lysine and 0.79% apparent digestible valine. Results indicate that the optimal apparent digestible valine:lysine ratio for the nursery pig is 58 and 64% for ADG and F/G, respectively. Therefore, most typical nursery diets …

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Southwest Research-Extension Center Field Day 2001 Jan 2001

Southwest Research-Extension Center Field Day 2001

Kansas Agricultural Experiment Station Research Reports

Each Field Day report consists of individual research reports on topics specific to the region, including cultural methods for most of the major crops grown in Kansas, mitigating the effects of weeds, insects, and disease associated with those crops, and irrigation. Research is conducted and reports written by staff of the K-State Research and Extension Southwest Research Extension Center.

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Escherichia Coli O157:H7 Risk Assessment For Production And Cooking Of Restructured Beef Steaks, M.T. Ortega-Valenzuela, H. Thippareddi, Randall K. Phebus, James L. Marsden, Curtis L. Kastner Jan 2001

Escherichia Coli O157:H7 Risk Assessment For Production And Cooking Of Restructured Beef Steaks, M.T. Ortega-Valenzuela, H. Thippareddi, Randall K. Phebus, James L. Marsden, Curtis L. Kastner

Kansas Agricultural Experiment Station Research Reports

Distribution of Escherichia coli O157:H7 in restructured beef from artificially inoculated meat pieces and destruction of E. coli O157:H7 in restructured beef steaks prepared from artificially inoculated meat was evaluated following broiling and grilling. In Study I, longissimus dorsi trimmings were inoculated with fluorescently marked E. coli O157:H7 cells to microscopically identify bacterial distribution throughout restructured steak cross-sections. E. coli O157:H7 fluorescent density was observed along the glue lines where meat pieces were enzymatically attached. Study II quantified the level of E. coli O157:H7 throughout the entire thickness of restructured beef. Cross-sectional slices of core samples from the steaks showed …

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Combinations Of Wet Corn Gluten Feed And Steam-Flaked Corn In Finishing Cattle Diets: Effects On Acid-Resistant E. Coli And Coliforms, Vfa Profiles And Ph, J.J. Sindt, H. Thippareddi, D.L. Lambert, T.B. Farran, Sean P. Montgomery, H.J. Labrune, James J. Higgins, James S. Drouillard, Randall K. Phebus Jan 2001

Combinations Of Wet Corn Gluten Feed And Steam-Flaked Corn In Finishing Cattle Diets: Effects On Acid-Resistant E. Coli And Coliforms, Vfa Profiles And Ph, J.J. Sindt, H. Thippareddi, D.L. Lambert, T.B. Farran, Sean P. Montgomery, H.J. Labrune, James J. Higgins, James S. Drouillard, Randall K. Phebus

Kansas Agricultural Experiment Station Research Reports

Finishing beef steers (615 head) were used in a 152-day experiment to evaluate the effects of feeding 80:0, 60:30 or 30:60 ratios (dry basis) of steam-flaked corn and wet corn gluten feed (WCGF, 30WCGF, 60WCGF) on acid-resistant E. coli and coliforms. On days 114 to 118 ruminal and fecal samples were collected from 180 steers and analyzed for pH, VFA, and total and acid-resistant Escherichia coli (E. coli) and coliforms. Ruminal (P=0.13) and fecal (P=0.10) VFA tended to decrease linearly as CGF increased. Consequently, there was a corresponding numerical linear increase in ruminal pH and a significant linear increase in …

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Interrelationships Among Carcass Characteristics Of Feedlot Steers And Heifers Selected For Competition, D.A. King, T.E. Lawrence, D.E. Schafer, Michael E. Dikeman Jan 2001

Interrelationships Among Carcass Characteristics Of Feedlot Steers And Heifers Selected For Competition, D.A. King, T.E. Lawrence, D.E. Schafer, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

We evaluated the interrelationships among carcass characteristics of steers and heifers selected from commercial feedlots for competition in the Beef Empire Days live and carcass contests. Because judging criteria are weighted heavily on cutability, the majority of cattle entered were trim and muscular. Within this highly selected group, heifer carcasses had larger ribeye areas, lower hot carcass weights, more ribeye area/100 lbs. of hot carcass weight, and a higher percentage of kidney-pelvic-heart fat than steers. However, steers graded USDA Choice or better 4% more often than heifers. Ribeye area, ribeye area/100 lbs. of hot carcass weight, and percentage of kidneypelvic- …

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A Survey Of Phytoestrogenic Activity In Kansas Flint Hills Pastures, S.I. Paisley, W.V. Welshons, G.E. Rottinghaus, Jeffrey L. Davidson, James J. Higgins, Dale A. Blasi, Michael S. Holder, David E. Kehler Jan 2001

A Survey Of Phytoestrogenic Activity In Kansas Flint Hills Pastures, S.I. Paisley, W.V. Welshons, G.E. Rottinghaus, Jeffrey L. Davidson, James J. Higgins, Dale A. Blasi, Michael S. Holder, David E. Kehler

Kansas Agricultural Experiment Station Research Reports

The botanical composition and basal cover of three Kansas Flint Hills pastures located in Butler and Chase counties was surveyed to estimate the incidence of plant species that contain appreciable levels of estrogenic activity. Many-flowered scurfpea and Ladino clover were the only plant species classified as high in estrogenic activity. Although significant estrogenic activity existed in specific species, the willingness of livestock to consume those species is unclear.

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Motivation Factors For Beef Processor-Producer Linkages, J.D. Lawrence, M.L. Hayenga, Ted C. Schroeder Jan 2001

Motivation Factors For Beef Processor-Producer Linkages, J.D. Lawrence, M.L. Hayenga, Ted C. Schroeder

Kansas Agricultural Experiment Station Research Reports

A survey was conducted of the 15 largest beef processors to identify the mix of procurement practices being used and to understand reasons motivating recent processorproducer linkages. Processors are shifting away from cash-market live, fed-cattle trade, which represents only 36% of cattle procured by survey respondents in 1999. Processorowned cattle feeding represents only approximately 5%, where it has been for more than a decade. Various other forms of pricing such as carcass weight, grid, and formula represented the largest portion of purchases at 49%. Processors indicated the two most important reasons they get involved in contracts and marketing agreements with …

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Effect Of Cooked Molasses Tubs On Performance And Health Of Newly Received Stocker Calves, S.I. Paisley, Gerald L. Stokka, F.K. Brazle Jan 2001

Effect Of Cooked Molasses Tubs On Performance And Health Of Newly Received Stocker Calves, S.I. Paisley, Gerald L. Stokka, F.K. Brazle

Kansas Agricultural Experiment Station Research Reports

Eight paired comparisons conducted at three field sites with 1059 newly-received lightweight stocker calves were used to determine the effect of free-choice cooked molasses tubs designed for receiving cattle on 28-day receiving period performance, percentage of cattle treated for respiratory disease, and death loss. At all sites, cattle received similar management with the exception that cooked molasses tubs were added to half of the pens immediately following initial processing. Weight gains were similar (P=0.36) for cattle with or without access to tubs (43 and 38 lb, respectively). The addition of tubs also did not affect the number of cattle treated …

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