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2016

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Articles 181 - 199 of 199

Full-Text Articles in Life Sciences

Effects Of Added Chromium And Space Allocation On Finishing Pig Performance, A. Santos, M. D. Tokach, S. S. Dritz, J. C. Woodworth, R. D. Goodband, J. M. Derouchey Jan 2016

Effects Of Added Chromium And Space Allocation On Finishing Pig Performance, A. Santos, M. D. Tokach, S. S. Dritz, J. C. Woodworth, R. D. Goodband, J. M. Derouchey

Kansas Agricultural Experiment Station Research Reports

A total of 256 pigs (Line 600 × 241, DNA Columbus, NE) were used in a 72-d trial to determine the effect of dietary chromium (chromium propionate; Kemin Industries, Des Moines, IA) and space allowance on performance and carcass characteristics of finishing pigs. Pens were blocked by initial weight and randomly assigned to treatments with 8 pigs per pen and 8 pens per treatment. Treatments were arranged in a 2 × 2 factorial with main effects of diet (control or added chromium, 200 ppb) and 2 space allowances (9.8 ft2- normal and 6.8 ft2– restricted). Adding …

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Effects Of Increasing Space Allowance By Removing A Pig Or Gate Adjustment On Finishing Pig Growth Performance, C. Holder, C. Carpenter, M. D. Tokach, J. M. Derouchey, J. C. Woodworth, R. D. Goodband, S. S. Dritz Jan 2016

Effects Of Increasing Space Allowance By Removing A Pig Or Gate Adjustment On Finishing Pig Growth Performance, C. Holder, C. Carpenter, M. D. Tokach, J. M. Derouchey, J. C. Woodworth, R. D. Goodband, S. S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 256 pigs (PIC 327 × 1050; initially 123.1 lb) were used in a 71 d growth study to compare the effects of increasing space allowance by removing a pig or gate adjustment, on finishing pig growth performance. At the initiation of the trial, pens of pigs were blocked by BW and allotted to 1 of 4 space allowance treatments. The 4 treatments included: 1) 9.8 ft2/pig or 2) 6.8 ft2/pig for the entire study with treatments 3 and 4 initially providing 6.8 ft2, but either a gate was adjusted or the …

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Effects Of Increasing Zn From Zinc Sulfate Or Zinc Hydroxychloride On Finishing Pig Growth Performance, Carcass Characteristics, And Economic Return, C. Carpenter, K. Coble, J. C. Woodworth, J. M. Derouchey, M. D. Tokach, R. D. Goodband, S. S. Dritz, J. Usry Jan 2016

Effects Of Increasing Zn From Zinc Sulfate Or Zinc Hydroxychloride On Finishing Pig Growth Performance, Carcass Characteristics, And Economic Return, C. Carpenter, K. Coble, J. C. Woodworth, J. M. Derouchey, M. D. Tokach, R. D. Goodband, S. S. Dritz, J. Usry

Kansas Agricultural Experiment Station Research Reports

A total of 1,008 pigs [TR4 (Fast × L02 PIC; initially 70.6 lb BW)] were used in a 103-d growth study to determine the effects of Zn source and level on finishing pig growth performance, carcass characteristics, and economic return. The 6 dietary treatments were arranged as a 2 × 3 factorial with main effects of Zn source (ZnSO4; Agrium Advance Technology, Loveland, CO, or Zn hydroxychloride; Intellibond-Z®; Micronutrients, Indianapolis, IN) and level (50, 100, or 150 ppm added Zn). The trace mineral premix was formulated to contain no added Zn. There were 21 pigs per pen and …

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Effects Of Increasing Levels Of Copper From Either Cuso4 Or Combinations Of Cuso4 And A Cu-Amino Acid Complex On Growth Performance, Carcass Characteristics, And Economics Of Finishing Pigs, C. B. Carpenter, J. C. Woodworth, J. M. Derouchey, M. D. Tokach, R. D. Goodband, S. S. Dritz, Z. J. Rambo Jan 2016

Effects Of Increasing Levels Of Copper From Either Cuso4 Or Combinations Of Cuso4 And A Cu-Amino Acid Complex On Growth Performance, Carcass Characteristics, And Economics Of Finishing Pigs, C. B. Carpenter, J. C. Woodworth, J. M. Derouchey, M. D. Tokach, R. D. Goodband, S. S. Dritz, Z. J. Rambo

Kansas Agricultural Experiment Station Research Reports

A total of 1,089 pigs (PIC 280 ×1050; initially 82.2 lb) were used in a 105-d experiment to determine the effects of increasing added Cu from either CuSO4alone or a 50/50 blend of CuSO4and Cu-AA (Availa®-Cu, Zinpro Corporation, Eden Prairie, MN) on growth performance, carcass characteristics, and economics of finishing pigs. All 6 dietary treatments contained 17 ppm Cu from CuSO4from the trace mineral premix. Additional treatment diets contained added CuSO4to provide 70 and 130 ppm total Cu or a 50/50 blend of added Cu from CuSO4and Cu-AA …

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The Effect Of Liquid Application Times, And Mixer Types With Different Wet Mix Times On Uniformity Of Mix, M. Saensukjaroenphon, C. K. Jones, C. H. Fahrenholz, C. R. Stark Jan 2016

The Effect Of Liquid Application Times, And Mixer Types With Different Wet Mix Times On Uniformity Of Mix, M. Saensukjaroenphon, C. K. Jones, C. H. Fahrenholz, C. R. Stark

Kansas Agricultural Experiment Station Research Reports

Liquid addition systems are often designed to add liquid ingredients with the shortest application time in order to increase the batching capacity and efficiency of the mixing process. The quantity of liquid that is added into the mixer affects batch cycle time, particularly when there is a programmed “wet mix” time, or mixing time after liquid application has completed. Shorter application time of liquids typically produces a larger droplet size, which may lead to greater clumping tendencies in the feed and less uniformity of liquid incorporation. Two experiments were conducted to determine the effect of liquid application time and wet …

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Foreword And Supplemental Information, Swine Day, R. D. Goodband, M. D. Tokach, S. S. Dritz, J. M. Derouchey, J. C. Woodworth Jan 2016

Foreword And Supplemental Information, Swine Day, R. D. Goodband, M. D. Tokach, S. S. Dritz, J. M. Derouchey, J. C. Woodworth

Kansas Agricultural Experiment Station Research Reports

It is with great pleasure that we present the 2016 Swine Industry Day Report of Progress. This report contains updates and summaries of applied and basic research conducted at Kansas State University during the past year. We hope that the information will be of benefit as we attempt to meet the needs of the Kansas swine industry.

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Swine Day 2016 Full Report, R. D. Goodband, M. D. Tokach, S. S. Dritz, J. M. Derouchey, J. C. Woodworth Jan 2016

Swine Day 2016 Full Report, R. D. Goodband, M. D. Tokach, S. S. Dritz, J. M. Derouchey, J. C. Woodworth

Kansas Agricultural Experiment Station Research Reports

It is with great pleasure that we present the 2016 Swine Industry Day Report of Progress. This report contains updates and summaries of applied and basic research conducted at Kansas State University during the past year. We hope that the information will be of benefit as we attempt to meet the needs of the Kansas swine industry.

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Assessing Training Methods To Educate Dairy Workers, L. Mendonca, B. E. Voelz, A. Scanavez Jan 2016

Assessing Training Methods To Educate Dairy Workers, L. Mendonca, B. E. Voelz, A. Scanavez

Kansas Agricultural Experiment Station Research Reports

Training employees is fundamental for dairy producers to achieve efficiency in order to increase profitability. Training videos offered online are becoming more common and recommended to train employees. The goals of this survey were to evaluate the comfort level of dairy employees in using computers and tablets, and preferred training delivery methods. A total of 71 employees from 6 dairies were interviewed. Interviews were conducted in the preferred language of the interviewee – English or Spanish. Of the respondents, 52 and 65.6% of employees consider computers and tablets easy to use, respectively. More than half of the employees reported that …

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Evaluation Of Weather Information From On-Farm And Meteorological Stations To Assess Heat Stress In Dairy Cows In Southwest Kansas, A. Scanavez, L. Rocha, B. E. Voelz, L. Hulbert, L. Mendonca Jan 2016

Evaluation Of Weather Information From On-Farm And Meteorological Stations To Assess Heat Stress In Dairy Cows In Southwest Kansas, A. Scanavez, L. Rocha, B. E. Voelz, L. Hulbert, L. Mendonca

Kansas Agricultural Experiment Station Research Reports

Heat stress represents a challenge for the dairy industry. In order for producers to implement appropriate management practices, it is crucial for researchers to assess the extent of heat stress to which cows are exposed during the summer. Temperaturehumidity index (THI) may be used to determine the severity of heat stress that cows are exposed to during the summer. The objective of this study was to evaluate climate conditions by calculating THI using information from: 1) an official meteorological station, 2) loggers at the pen-level, and 3) loggers at the cow-level from a commercial dairy located in southwest Kansas. Temperature-humidity …

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Foreword, Dairy Research 2016, B. Bradford Jan 2016

Foreword, Dairy Research 2016, B. Bradford

Kansas Agricultural Experiment Station Research Reports

Kansas State University is pleased to present the 2016 Dairy Research Report of Progress.

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Increasing Estrus Expression In Lactating Dairy Cows, J. A. Sauls, B. E. Voelz, J. Stevenson Jan 2016

Increasing Estrus Expression In Lactating Dairy Cows, J. A. Sauls, B. E. Voelz, J. Stevenson

Kansas Agricultural Experiment Station Research Reports

This report summarizes the use of various hormones in an attempt to induce greater estrus expression of lactating dairy cows. Average detection of estrus (<50%) in most U.S. dairy herds has been identified as a problem limiting reproductive efficiency. Detection of estrus plays an important role in reproductive management in U.S. dairy herds despite the adoption of fixed-time artificial insemination programs. When estrus was detected by an activity monitoring system or a rump-mounted device, supplementing cows with progesterone before induction of luteolysis resulted in greater intensity of estrus when compared with controls. In addition, administering estradiol cypionate at 24 h after induced luteolysis resulted in greater frequency of estrus expression compared with cows treated with testosterone propionate or controls when assessed by an activity monitor. Activity monitoring systems achieved heat-detection rates of approximately 70% (80% with estradiol) and are likely cost effective for herds achieving less than that level of heat detection.

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Additional Small Dose Of Prostaglandin F2Α At The Time Of Ai Fails To Improve Pregnancy Rates Of Lactating Dairy Cows, J. Stevenson, J. A. Sauls, L. Mendonca Jan 2016

Additional Small Dose Of Prostaglandin F2Α At The Time Of Ai Fails To Improve Pregnancy Rates Of Lactating Dairy Cows, J. Stevenson, J. A. Sauls, L. Mendonca

Kansas Agricultural Experiment Station Research Reports

In two experiments we tested the hypothesis that administering 10 mg of prostaglandin F2α(PGF) to lactating dairy cows concurrent with timed artificial insemination would increase pregnancy outcome. In three herds with 2,135 inseminations, we failed to demonstrate a positive effect on pregnancy per AI. Although a trend was observed in experiment 1, with more cows in experiment 2, the PGF treatment failed to improve pregnancy outcomes.

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Benchmarking Reproductive Efficiency And Transition Cow Health Of Kansas Dairy Herds, A. Scanavez, B. E. Voelz, L. Mendonca Jan 2016

Benchmarking Reproductive Efficiency And Transition Cow Health Of Kansas Dairy Herds, A. Scanavez, B. E. Voelz, L. Mendonca

Kansas Agricultural Experiment Station Research Reports

Comparing key performance indicators across dairy farms may provide insightful information to dairy producers. Differences in management philosophies, facilities, and locations of dairy farms may influence overall performance of dairy operations. An ongoing extension program aims to benchmark reproductive performance and transition cow health of dairy farms located in Kansas and adjacent states. In this report, we compiled data from 2013 to 2015 of herds enrolled in the program and divided the data in warm and cool seasons to evaluate the impact of heat stress on key performance indicators. Annual pregnancy risk and warm to cool ratio of pregnancy risk …

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Development Of A Berry Processing Score For Sorghum Silage, J. R. Johnson, J. P. Goeser, Michael Brouk Jan 2016

Development Of A Berry Processing Score For Sorghum Silage, J. R. Johnson, J. P. Goeser, Michael Brouk

Kansas Agricultural Experiment Station Research Reports

This study was done in an effort to develop a berry processing score (BPS) for sorghum silage, similar to the kernel processing score (KPS) currently used for corn silage. Sorghum silage samples were collected from 3 dairies in Kansas and processed in the Grain Science & Industry grain processing laboratory at Kansas State University using one of four different roll gap settings to give four differently processed samples: unprocessed, 1.5, 1.0, or 0.5 mm. After drying, samples were placed into a Ro-Tap particle separation machine for 10 minutes until the whole sample was separated. Whole samples, as well as separated …

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Effects Of Dietary Zinc Source And Level On Mammary Epithelia And Dairy Food Chemistry, J. Shaffer, K. Pandalaneni, L. Mamedova, J. Defrain, J. Amamcharla, B. Bradford Jan 2016

Effects Of Dietary Zinc Source And Level On Mammary Epithelia And Dairy Food Chemistry, J. Shaffer, K. Pandalaneni, L. Mamedova, J. Defrain, J. Amamcharla, B. Bradford

Kansas Agricultural Experiment Station Research Reports

Twelve lactating Holstein cows (132 ± 21 days in milk) were enrolled in a Latin square experiment to explore the extent to which source and amount of supplemental dietary Zn can impact barrier function of mammary epithelial tissue. Cows received either 970 mg supplemental Zn/day as ZnSO4(LS), 1,640 mg supplemental Zn/day as ZnSO4(HS), or 1,680 mg supplemental Zn/day as a mixture of ZnSO4and Zn methionine complex (HC). Treatments lasted for 17 days followed by 4 days of sample collection. Blood and milk were collected and analyzed for markers of blood-milk leak including plasma lactose …

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Bioavailability Of Ruminally Or Abomasally Infused L-Carnitine In Holstein Heifers, K. Olagaray, C. Armendariz, A. Bellamine, S. Jacobs, E. Titgemeyer, B. Bradford Jan 2016

Bioavailability Of Ruminally Or Abomasally Infused L-Carnitine In Holstein Heifers, K. Olagaray, C. Armendariz, A. Bellamine, S. Jacobs, E. Titgemeyer, B. Bradford

Kansas Agricultural Experiment Station Research Reports

This study evaluated the relative bioavailability of carnitine delivered by different methods in dairy cattle. Four Holstein heifers were used in a split-plot design to compare ruminally or abomasally infused L-carnitine. The study included 2 main-plot periods, with infusion routes allocated in a crossover design. Within main-plot periods, each of 3 subplot periods consisted of 4-d infusions separated with 4-d rest periods. Subplot treatments were infusion of 1, 3, and 6 g L-carnitine daily. Doses were increased within a period to minimize carryover. Treatments were delivered in two 10-h infusions daily. Blood was collected before the start of infusions and …

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Bioavailability Of Rumen-Protected Carnitine In Lactating Dairy Cows, K. Olagaray, J. Shaffer, C. Armendariz, A. Bellamine, S. Jacobs, E. Titgemeyer, B. Bradford Jan 2016

Bioavailability Of Rumen-Protected Carnitine In Lactating Dairy Cows, K. Olagaray, J. Shaffer, C. Armendariz, A. Bellamine, S. Jacobs, E. Titgemeyer, B. Bradford

Kansas Agricultural Experiment Station Research Reports

For this study, 56 lactating Holstein cows (143 ± 72 days in milk) were used in a randomized complete block design to evaluate 2 rumen-protected products compared to crystalline carnitine. Treatments were a) control, b) 3 grams/day crystalline L-carnitine (raw), c) 6 grams/day raw, d) 5 grams/day 40COAT (40% coating, 60% L-carnitine), e) 10 grams/day 40COAT, f) 7.5 grams/day 60COAT (60% coating, 40% L-carnitine), and g) 15 grams/day 60COAT. Treatments were top-dressed to diets twice daily. The 14-day experiment included a 6-day baseline-measurement period with the final 2 days used for data and sample collection and an 8-day treatment period …

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Acknowledgments, Dairy Research 2016, B. Bradford Jan 2016

Acknowledgments, Dairy Research 2016, B. Bradford

Kansas Agricultural Experiment Station Research Reports

Appreciation is expressed to the following organizations for their support of dairy teaching, research, and extension at Kansas State University during 2015-2016.

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Dairy Research 2016, Full Report, B. Bradford Jan 2016

Dairy Research 2016, Full Report, B. Bradford

Kansas Agricultural Experiment Station Research Reports

Kansas State University is pleased to present the 2016 Dairy Research Report of Progress.

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