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Kansas State University Libraries

1995

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Articles 31 - 60 of 91

Full-Text Articles in Animal Sciences

Selection Response And Genetic Parameter Estimation For Feed Intake, Gain, And Feed Conversion, J.B. Jr. Glaze, R.R. Schalles Jan 1995

Selection Response And Genetic Parameter Estimation For Feed Intake, Gain, And Feed Conversion, J.B. Jr. Glaze, R.R. Schalles

Kansas Agricultural Experiment Station Research Reports

Performance records of 1459 Polled Hereford cattle born from 1967 through 1979 were analyzed to estimate genetic parameters and the direct and correlated responses that were due to selection for feed conversion. Heritabilities were .24 for intake, .25 for gain, and .14 for feed conversion. The genetic correlation between average daily gain and feed conversion was -.82; correlation between average daily gain and feed intake was .42. Faster-gaining cattle have greater feed intakes and are more efficient. Feed conversion was improved by direct selection. However, it is more economically feasible for breeders to improve feed conversion by selecting for faster …

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Breed And Management Comparisons And Genetic Parameters For Carcass Traits, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman Jan 1995

Breed And Management Comparisons And Genetic Parameters For Carcass Traits, K.M. Andries, R.R. Schalles, D.E. Franke, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Carcass data from 5 years of a long-term, rotational , crossbreeding project were used to calculate heritabilities, genetic and phenotypic correlations , and management effects and to compare breeds for marbling, ribeye area, and hot carcass weight. Angus, Brahman, Charolais, Hereford, Polled Hereford, Gelbvieh, and Simmental breeds were involved. Sixty percent of the steer calves were fed as calves and 40% as yearlings. Heritabilities were .40 for marbling, .46 for ribeye area, and .51 for carcass weight. Genetic and phenotypic correlations were high between carcass weight and ribeye area but low between marbling and the other traits. Steers fed as …

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The Effect Of Dietary Zinc Level And Source On Yearling Bull Growth And Fertility, J.D. Arthington, K.R. Johnson, L.R. Corah, C.L. Willms, D.A. Hill Jan 1995

The Effect Of Dietary Zinc Level And Source On Yearling Bull Growth And Fertility, J.D. Arthington, K.R. Johnson, L.R. Corah, C.L. Willms, D.A. Hill

Kansas Agricultural Experiment Station Research Reports

To study the effect of dietary zinc level and source on bull growth and fertility, 325 yearling Angus bulls were allotted by weight into six pens (three pens of heavy and three pens of lightweight bulls). The three supplemental zinc (Zn) treatments were 1) 40 ppm inorganic Zn all supplied by Zn sulfate (ZnI); 2) 40 ppm Zn with 1/3 supplied by Zn proteinate and 2/3 supplied by Zn sulfate (ZnPI); and 3) 60 ppm ZnI all supplied by Zn sulfate (ZnHi). Initial and final liver biopsies (10 per pen) were collected and analyzed for zinc concentration. Individual weights and …

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Effects Of Grazing System And Stocking Rate On Cow-Calf Performance In The Flint Hills, R.C. Cochran, D.E. Johnson, K. C. Olson, David C. Hartnett, Clenton E. Owensby Jan 1995

Effects Of Grazing System And Stocking Rate On Cow-Calf Performance In The Flint Hills, R.C. Cochran, D.E. Johnson, K. C. Olson, David C. Hartnett, Clenton E. Owensby

Kansas Agricultural Experiment Station Research Reports

A 6-year study was designed to measure the influences of stocking rate and grazing system on performance of cow-calf pairs grazing tallgrass prairie. This paper summarizes the initial 3 years. Late-season rest-rotation was compared to continuous grazing over low, moderate, and high stocking rates. No differences (P>.10) were observed in body weight of cows or calves as a result of grazing system or stocking rate. However, calf weaning weight tended (P=.20) to be greater with continuous grazing than with late season rest-rotation. Cow body condition score was unaffected (P>.10) by stocking rate or grazing system. Conception rates were …

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The Effect Of Implants On Gain Of Heifers Grazing Native Grass, F.K. Brazle, D.L. Cook Jan 1995

The Effect Of Implants On Gain Of Heifers Grazing Native Grass, F.K. Brazle, D.L. Cook

Kansas Agricultural Experiment Station Research Reports

Three hundred-ninety crossbred heifers were allotted randomly to one of three implant treatments: 1) Implus- H®, 2) Synovex-H®, and 3) Ralgro®. The heifers grazed native grass pastures for 122 days, stocked at 4 acres per head. The heifers receiving the Implus-H tended to gain faster (P<.12) than the Ralgro heifers. No difference in gain occurred between the Implus-H and Synovex-H heifers.

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Wheat Middlings In High Concentrate Finishing Rations: Cattle Performance, B.S. Dalke, R.N. Jr. Sonon, D.L. Holthaus, K.K. Bolsen, Matthew A. Young Jan 1995

Wheat Middlings In High Concentrate Finishing Rations: Cattle Performance, B.S. Dalke, R.N. Jr. Sonon, D.L. Holthaus, K.K. Bolsen, Matthew A. Young

Kansas Agricultural Experiment Station Research Reports

One hundred twenty medium-framed steers were fed one of six high (90%) concentrate rations: control (0), 5, 10, or 15% pelleted wheat middlings (WM) replacing the concentrate (dry rolled corn) and 5 or 10% pelleted WM replacing the roughage (chopped alfalfa hay). Increasing WM replacement of the concentrate increased both dry matter (DM) intake and feed/gain ratio linearly, without influencing daily gain or final weight. WM replacement of the roughage decreased DM intake linearly, but it ha d no effect on daily gain, final weight, or feed efficiency . The data indicate that WM could replace only 5% of the …

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Feeder Cattle Price Differentials: How Much Did They Change Over Time?, J. Mintert, F. Brazle, J. Iii Sartwelle, R. Jr. Bolze, Michael R. Langemeier, Ted C. Schroeder Jan 1995

Feeder Cattle Price Differentials: How Much Did They Change Over Time?, J. Mintert, F. Brazle, J. Iii Sartwelle, R. Jr. Bolze, Michael R. Langemeier, Ted C. Schroeder

Kansas Agricultural Experiment Station Research Reports

Results from mathematical models of feeder cattle price/characteristics using data collected in Kansa s and Missouri in 1986/1987 and from 1993 using the same data collection and modeling procedures indicate that the implicit values of many feeder cattle characteristics changed over time. Characteristic values often changed whether their value was measured in dollars per hundredweight or as a percentage of the mean feeder p rice during the data collection period. Directional impacts of characteristics on feeder cattle price were generally consistent from 1986/1987 to 1993. These results imply that, as market conditions change, new feeder cattle price/characteristic relationships need to …

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How The Price Of Different Breeds Of Feeder Cattle Has Changed Over Time, F.K. Brazle, J.R. Mintert, J. Iii Sartwelle, R.P. Jr. Bolze, Ted C. Schroeder Jan 1995

How The Price Of Different Breeds Of Feeder Cattle Has Changed Over Time, F.K. Brazle, J.R. Mintert, J. Iii Sartwelle, R.P. Jr. Bolze, Ted C. Schroeder

Kansas Agricultural Experiment Station Research Reports

Data on feeder steer characteristics, breeds, and prices were collected in 1986/87 and 1993 at Kansas and Missouri feeder cattle auctions to identify changes in buyers' preferences for various breeds. Results from models of feeder steer price/characteristics indicate that the relative value of many breeds changed over time. Relative to Hereford steers, Angus, Hereford x Angus cross, Continental cross, and low percentage Brahman steers all gained in price from 1986/87 to 1993. Longhorn Cross steers' price declined relative to Hereford steers over the same time period.

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Kansas Environmental Regulations, Joseph P. Harner, L. Hess, James P. Murphy Jan 1995

Kansas Environmental Regulations, Joseph P. Harner, L. Hess, James P. Murphy

Kansas Agricultural Experiment Station Research Reports

The Kansas Department of Health and Environment (KDHE) enforces two different regulation s in the state of Kansas. One set of regulation s is from the Federal Environmental Protection Agency (EPA) and applies to larger operations. The other is a set of Kansas regulation s created by our state legislature for smaller operations. EPA regulations pertain to confined feeding operation s in excess of 1,000 animal units and require an EPA National Pollution Discharge Elimination System (NPDES) permit. Because an animal unit for the NPDES permit is defined as one beef animal, a feedlot with a capacity of 1,000 or …

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Losses From Top Spoilage In Horizontal Silos, D.L. Holthaus, B.E. Brent, L. Pfaff, K.K. Bolsen, Matthew A. Young Jan 1995

Losses From Top Spoilage In Horizontal Silos, D.L. Holthaus, B.E. Brent, L. Pfaff, K.K. Bolsen, Matthew A. Young

Kansas Agricultural Experiment Station Research Reports

The top 3 ft of silage from 127 horizontal silos was sampled at three locations across the width of the silo during a 4-year period (1990 through 1993). Ninety-six percent of the silages were either corn or forage sorghum, and only 18 percent of the silos were sealed with polyethylene sheeting . Losses of organic matter (OM) from spoilage were estimated by using ash content as an internal marker. Sealing silos dramatically reduced the estimated spoilage losses in the top 3 ft. All silages had greater estimated spoilage losses in the top 18 inches in 1991 and 1993 than 1990 …

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1995 Agricultural Research Southeast Agricultural Research Center, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service Jan 1995

1995 Agricultural Research Southeast Agricultural Research Center, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service

Kansas Agricultural Experiment Station Research Reports

No abstract provided.

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Can Augers Be Used To Blend Diets On The Farm? (1995), S L. Johnston, Robert H. Hines, S L. Traylor, Joe D. Hancock, Keith C. Behnke Jan 1995

Can Augers Be Used To Blend Diets On The Farm? (1995), S L. Johnston, Robert H. Hines, S L. Traylor, Joe D. Hancock, Keith C. Behnke

Kansas Agricultural Experiment Station Research Reports

Growing/finishing gilts were fed two-, three-, four-, or five-phase diet regimens from 77 to 276 lb. The diets were mixed in either a conventional, horizontal ribbon mixer or a 9 ft auger. No interactions occurred among the mixer type and phase-feeding treatments. Pigs fed diets blended with the auger had similar ADG but slightly (4%) worse F/G compared to those fed diets mixed in the mixer. Finally, the three-phase regimen gave the lowest F/G and the lowest cost of gain.; Swine Day, Manhattan, KS, November 16, 1995

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Estimated Budgets For Separate-Site Swine Production (1995), Kevin C. Dhuyvetter, Michael D. Tokach, R D. Jones Jan 1995

Estimated Budgets For Separate-Site Swine Production (1995), Kevin C. Dhuyvetter, Michael D. Tokach, R D. Jones

Kansas Agricultural Experiment Station Research Reports

Budgets were developed to help Kansas swine producers analyze the economics of separate-site production. Return on investment (ROI) was estimated at 9.5%in each of the three production phases. Returns over total costs were very sensitive to transfer price between phases (weaned pig and feeder pig price) as well as production efficiencies and input costs.; Swine Day, Manhattan, KS, November 16, 1995

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Mixing And Clean-Out Properties Of Sulfamethazine And Carbadox In Swine Feed (1995), T Herrman, Keith C. Behnke, T Loughin Jan 1995

Mixing And Clean-Out Properties Of Sulfamethazine And Carbadox In Swine Feed (1995), T Herrman, Keith C. Behnke, T Loughin

Kansas Agricultural Experiment Station Research Reports

Results of this study suggest that carbadox was incorporated uniformly in the feed by mixing. However, the two medicated feed additives containing sulfamethazine did not incorporate uniformly in the feed. The causal mechanism for the poor mixing performance of sulfamethazine was not discovered; however, assay variability was eliminated as a primary source of variation. Flushing the feed mixing, conveying, and sack-off systems twice with ground corn did not eliminate drug carryover. Further investigation of the mixing and clean-out properties of medicated feed additives is warranted.; Swine Day, Manhattan, KS, November 16, 1995

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Display Life And Related Traits Of Low-Dose Irradiated, Boneless, Pork Chops (1995), S E. Luchsinger, Zepeda C.M. Garcia, Edgar Iv Chambers, M E. Hollingsworth, Melvin C. Hunt, James L. Marsden, Sally L. Stroda, Canas E. Rubio J, Curtis L. Kastner, W G. Kuecker, T Mata, Donald H. Kropf Jan 1995

Display Life And Related Traits Of Low-Dose Irradiated, Boneless, Pork Chops (1995), S E. Luchsinger, Zepeda C.M. Garcia, Edgar Iv Chambers, M E. Hollingsworth, Melvin C. Hunt, James L. Marsden, Sally L. Stroda, Canas E. Rubio J, Curtis L. Kastner, W G. Kuecker, T Mata, Donald H. Kropf

Kansas Agricultural Experiment Station Research Reports

Irradiation and vacuum-packaging caused a more intense and stable red color in boneless pork chops. Irradiation up to 2.5 kGy increased cooked internal redness in chilled chops. Oxidative rancidity was greater in aerobic packaging than vacuum-packaging and in irradiated aerobic packaged chops than controls. Irradiation of vacuum-packaged boneless pork chops has promising potential for market acceptance.; Swine Day, Manhattan, KS, November 16, 1995

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Effects Of Feeder Design And Pelleting On Growth Performance And Water Use In Finishing Pigs (1995), M M. Rantanen, Robert H. Hines, I H. Kim, Joe D. Hancock Jan 1995

Effects Of Feeder Design And Pelleting On Growth Performance And Water Use In Finishing Pigs (1995), M M. Rantanen, Robert H. Hines, I H. Kim, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

Pigs fed from wet-dry feeders had 4% greater ADG with 50% less water usage than those consuming feed from dry feeders. Pelleting diets improved F/G by 4% compared to meal diets. However, the benefits of pelleting were primarily when a dry feeder was used, with little evidence to support use of both pelleting and wet/dry feeders for finishing pigs.; Swine Day, Manhattan, KS, November 16, 1995

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Consumer Acceptance Of Low-Dose Irradiated, Boneless, Pork Chops (1995), S E. Luchsinger, Zepeda C.M. Garcia, Edgar Iv Chambers, M E. Hollingsworth, Melvin C. Hunt, James L. Marsden, Sally L. Stroda, Canas E. Rubio J, Curtis L. Kastner, W G. Kuecker, T Mata, Donald H. Kropf Jan 1995

Consumer Acceptance Of Low-Dose Irradiated, Boneless, Pork Chops (1995), S E. Luchsinger, Zepeda C.M. Garcia, Edgar Iv Chambers, M E. Hollingsworth, Melvin C. Hunt, James L. Marsden, Sally L. Stroda, Canas E. Rubio J, Curtis L. Kastner, W G. Kuecker, T Mata, Donald H. Kropf

Kansas Agricultural Experiment Station Research Reports

Acceptance of irradiated, chilled, boneless, pork chops and nonirradiated controls by consumers was not different. Coupled with consumer concerns about food safety and well-documented improvement in consumer attitudes about irradiated foods, the potential for market acceptance is very promising.; Swine Day, Manhattan, KS, November 16, 1995

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Low-Phosphorus Diets During Late-Finishing Decrease Cost Of Gain With Minimal Effect On Growth Performance, Carcass Characteristics, And Meat Quality (1995), I Mavromichalis, I H. Kim, L L. Burnham, M M. Rantanen, Robert H. Hines, Joe D. Hancock, Donald H. Kropf, Keith C. Behnke Jan 1995

Low-Phosphorus Diets During Late-Finishing Decrease Cost Of Gain With Minimal Effect On Growth Performance, Carcass Characteristics, And Meat Quality (1995), I Mavromichalis, I H. Kim, L L. Burnham, M M. Rantanen, Robert H. Hines, Joe D. Hancock, Donald H. Kropf, Keith C. Behnke

Kansas Agricultural Experiment Station Research Reports

Partially omitting (up to 66 %) the supplemental inorganic phosphorus (P) source from a late-finishing (190 to 250 lb) diet resulted in slightly greater ADG and backfat thickness, which probably resulted from the greater feed (energy) intake. Meat quality was unaffected by treatment. Thus, during late-finishing, a total P concentration of .40% can be used to decrease diet cost without decreasing performance or meat quality of high-lean pigs.; Swine Day, Manhattan, KS, November 16, 1995

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The Interactive Effects Of Turbozyme 160 And Diet Complexity On Starter Pig Growth Performance (1995), M L. Lofing, J R. Bergstrom, W B. Nessmith Jr, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen Jan 1995

The Interactive Effects Of Turbozyme 160 And Diet Complexity On Starter Pig Growth Performance (1995), M L. Lofing, J R. Bergstrom, W B. Nessmith Jr, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

These results suggest that feeding a complex starter diet improves initial (d 0 to 7 postweaning) growth performance of segregated early-weaned pigs. Feeding either a simple or complex diet with added Turbozyme 160 improves feed efficiency from day 0 to 14 postweaning. However, for the overall experimental period, neither a complex diet nor added Turbozyme 160 had any effect on growth performance.; Swine Day, Manhattan, KS, November 16, 1995

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The Effects Of Substituting Deproteinized Whey Or Pure Lactose For Dried Whey On Starter Pig Performance (1995), W B. Nessmith Jr, J R. Bergstrom, J W. Smith Ii, K Q. Owen, J A. Loughmiller, R E. Musser, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen Jan 1995

The Effects Of Substituting Deproteinized Whey Or Pure Lactose For Dried Whey On Starter Pig Performance (1995), W B. Nessmith Jr, J R. Bergstrom, J W. Smith Ii, K Q. Owen, J A. Loughmiller, R E. Musser, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A study was conducted to evaluate the effects of replacing all or half of spray-dried, edible-grade whey with deproteinized whey or pure lactose on starter pig performance. No differences in pig performance were observed. Therefore, high quality deproteinized whey and lactose are effective replacements for the lactose provided by dried whey in starter pig diets.; Swine Day, Manhattan, KS, November 16, 1995

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Effects Of Distillers Grains On Growth Performance In Nursery And Finishing Pigs (1995), B W. Senne, P S. Sorrell, I H. Kim, S L. Traylor, Robert H. Hines, Joe D. Hancock, Keith C. Behnke Jan 1995

Effects Of Distillers Grains On Growth Performance In Nursery And Finishing Pigs (1995), B W. Senne, P S. Sorrell, I H. Kim, S L. Traylor, Robert H. Hines, Joe D. Hancock, Keith C. Behnke

Kansas Agricultural Experiment Station Research Reports

Rate and efficiency of gain were not affected by adding as much as 20% distillers dried grains in isocaloric diets for nursery pigs or 30% in isocaloric diets for finishing pigs. These results demonstrate that the previously suggested maximums of 5% distillers dried grains in nursery diets and 10% distillers dried grains in finishing diets are too conservative. Finally, because the 20% (nursery) and 30% (finishing) treatments were the greatest concentrations used in our experiments, additional growth assays are needed to determine the maximum limits for distillers dried grains in diets for pigs.; Swine Day, Manhattan, KS, November 16, 1995

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Sodium Sulfite And Extrusion Affect The Nutritional Value Of Soybean Products For Nursery Pigs (1995), L L. Burnham, I H. Kim, Robert H. Hines, Terry L. Gugle, Joe D. Hancock Jan 1995

Sodium Sulfite And Extrusion Affect The Nutritional Value Of Soybean Products For Nursery Pigs (1995), L L. Burnham, I H. Kim, Robert H. Hines, Terry L. Gugle, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

Extruded soybeans improved rates and efficiencies of gain when fed to nursery pigs in place of soybean meal (SBM). Sodium sulfite (an extrusion aid) increased extruder throughput and improved d 13 to 35 and overall efficiency of growth in pigs fed extruded soybeans and unextruded SBM. Further research is needed to determine if greater sodium sulfite concentrations will continue to increase extruder throughput and to elucidate the mechanism for improved growth performance of pigs fed sodium sulfite with unextruded SBM.; Swine Day, Manhattan, KS, November 16, 1995

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Effects Of Various Fractions Of Spray-Dried Plasma Protein On Performance Of Early-Weaned Pigs (1995), K Q. Owen, K G. Friesen, B T. Richert, J W. Smith Ii, L E. Russell, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach Jan 1995

Effects Of Various Fractions Of Spray-Dried Plasma Protein On Performance Of Early-Weaned Pigs (1995), K Q. Owen, K G. Friesen, B T. Richert, J W. Smith Ii, L E. Russell, Jim L. Nelssen, Robert D. Goodband, Michael D. Tokach

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the individual protein fraction (IgG, low molecular weight peptides and albumin) contained in spray-dried plasma protein responsible for stimulating feed intake. In Exp. 1, pigs (21 d of age) fed a diet containing the IgG protein fraction had similar performance to pigs fed a plasma protein diet. In Exp. 2, two fractions of spray-dried porcine plasma, IgG and albumin, were evaluated with pigs (10 d of age). Pigs fed either fraction had performance similar to pigs fed plasma protein.; Swine Day, Manhattan, KS, November 16, 1995

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Wheat Gluten And Spray-Dried Plasma Protein Blends For Nursery Pigs (1995), L L. Burnham, I H. Kim, Robert H. Hines, Joe D. Hancock Jan 1995

Wheat Gluten And Spray-Dried Plasma Protein Blends For Nursery Pigs (1995), L L. Burnham, I H. Kim, Robert H. Hines, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

Using a 50:50 blend of spray-dried plasma protein (SDPP):spray-dried wheat gluten (WG) (i.e., with each as approximately 4% of the diet) gave the greatest ADG and ADFI, while reducing diet costs compared to the control diet (i.e., 8% SDPP). Even with a slight decrease in efficiency of gain, the marked decrease in diet cost will yield better cost of gain with a 50:50 blend versus using only SDPP.; Swine Day, Manhattan, KS, November 16, 1995

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In Vitro Branched Chain Amino Acid Oxidation By Porcine Mammary Tissue (1995), B T. Richert, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen Jan 1995

In Vitro Branched Chain Amino Acid Oxidation By Porcine Mammary Tissue (1995), B T. Richert, Robert D. Goodband, Michael D. Tokach, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

Mammary secretory tissue from six (three each of parity 1 and 2) lactating sows (d 10 to 17 of lactation) was obtained via biopsy for in vitro incubation to determine CO2 production fr01TI individual branched chain amino acids. Carbon dioxide production levels as percentages of the 14C-labeled amino acid metabolized by the mammary tissue were 2.57, 1.86, and 4.07% for isoleucine, leucine, and valine, respectively (P<.03). These results indicate that, in the lactating sow mammary gland, valine has the greatest oxidation rate of the branched chain amino acids.; Swine Day, Manhattan, KS, November 16, 1995

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Influence Of Increased Vitamin Levels For The First 35 D Postweaning On Breeding And Subsequent Lactation Performance Of Sows (1995), G Lynch, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 1995

Influence Of Increased Vitamin Levels For The First 35 D Postweaning On Breeding And Subsequent Lactation Performance Of Sows (1995), G Lynch, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Four hundred and eight sows were used to evaluate the effects of feeding high levels of vitamins (2 to 7 times average inclusion rate) for the first 35 d postbreeding on later reproduction performance. number of pigs born alive and number born dead following feeding high vitamin levels showed a numeric advantage compared with sows fed the control diet. These numeric responses resulted in trends toward higher number weaned (9.75 vs 9.54) and litter weaning weight (l 07.8 vs 105.4 lb). Further research needs to be conducted to determine which vitamin or vitamins may have an influence on embryo survival.; …

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Maturation Of The Gilt's Uterus Before Puberty: Response To Progesterone At Different Ages (1995), P G. Groothuis, R M. Blair, Duane L. Davis Jan 1995

Maturation Of The Gilt's Uterus Before Puberty: Response To Progesterone At Different Ages (1995), P G. Groothuis, R M. Blair, Duane L. Davis

Kansas Agricultural Experiment Station Research Reports

We determined the age at which progesterone induced certain responses in the gilt's uterus. The prepubertal maturation permitting each response is being studied currently with the intent of using the information to develop methods to improve litter size in pigs, perhaps by identifying markers for uterine function that could be used before gilts enter the breeding herd.; Swine Day, Manhattan, KS, November 16, 1995

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Synchronized Ovulation With Gonadotropin-Releasing Hormone, Prostaglandin F And Fixed-Time Insemination (1995), Y. Kobayashi, Jeffrey S. Stevenson Jan 1995

Synchronized Ovulation With Gonadotropin-Releasing Hormone, Prostaglandin F And Fixed-Time Insemination (1995), Y. Kobayashi, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Summary Lactating Holstein cows and replacement heifers were treated with a novel synchronized ovulation protocol, which involves one fixedtime insemination without heat detection. One injection of GnRH (Cystorelin®) was given, followed in 7 days with an injection of PGF2α (Lutalyse®). Approximately 32 to 36 hr later, ovulation was induced with a second injection of GnRH, and one fixed-time insemination was given 18 hr later. Control cattle were given one injection of PGF and inseminated at observed 2a estrus. Pregnancy rates measured by palpation between 38 and 52 days after insemination in controls (47.1%) were slightly, but not significantly, greater than …

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Management Strategies: Reproduction (1995), John F. Smith, Jeffrey S. Stevenson Jan 1995

Management Strategies: Reproduction (1995), John F. Smith, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Despite the negative effects of milk production on some reproductive traits, calving intervals between high- and low-producing groups varied by only 9 days (414 vs 423). First-service conception rates were 8 percentage points greater in the low-producing group than in the high-producing group. However, the percentage of cows not yet inseminated that were more than 120 days in milk was 18 percentage points greater in the low- than highproducing herds. When Kansas dairy herds in the DHIA program are evaluated, the higher producing herds seem to have lower firstservice conception rates and more services per conception. However, managers of high-producing …

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Cash Operating Income And Liquidity Management For Dairy Farms (1995), B.D. Elliott, Michael R. Langemeier, Allen M. Featherstone Jan 1995

Cash Operating Income And Liquidity Management For Dairy Farms (1995), B.D. Elliott, Michael R. Langemeier, Allen M. Featherstone

Kansas Agricultural Experiment Station Research Reports

Net cash flow measures the amount of cash remaining after all cash expense obligations are satisfied. This cash is available for additional farm investment, off-farm investment, family living, and additional debt repayment. A 5- year average monthly cash flow statement was used to determine net cash flow for 19 Kansas dairy farms. Results indicated that excess cash and debt were used primarily to invest in machinery, vehicles, and nonfarm assets and increase the allocation for family living. Investments in land and buildings increased moderately during the study period.; Dairy Day, 1995, Kansas State University, Manhattan, KS, 1995;

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