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Kansas State University Libraries

Animal Sciences

2012

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Articles 1 - 30 of 74

Full-Text Articles in Life Sciences

Relationships Between Feedlot Health, Average Daily Gain, And Carcass Traits Of Angus Steers (2012), M.L. Hands, T.T. Marston, L.R. Corah, Christopher D. Reinhardt, Justin W. Waggoner Jan 2012

Relationships Between Feedlot Health, Average Daily Gain, And Carcass Traits Of Angus Steers (2012), M.L. Hands, T.T. Marston, L.R. Corah, Christopher D. Reinhardt, Justin W. Waggoner

Kansas Agricultural Experiment Station Research Reports

Morbidity reduces performance and quality grade, but the effects of morbidity on quality grade independent of its effect on carcass fatness are rarely documented. As feedlot cattle fatten, a greater proportion of their daily carcass gain goes to fat deposition, and greater carcass fat is consistent with greater marbling score. Higher-grading cattle are often assumed to have reduced feedlot performance. Objectives of this research were to document the impacts of various animal and non-animal factors on feedlot average daily gain, health, and carcass traits in Angus steers and to correlate quality and yield grade components of carcass with live performance.


Influence Of Linpro And Dietary Copper On Feedlot Cattle Performance, Carcass Characteristics, And Fatty Acid Composition Of Beef (2012), C.A. Alvarado, C.C. Aperce, K.A. Miller, C.L. Van Bibber, S. Uwituze, James J. Higgins, James S. Drouillard Jan 2012

Influence Of Linpro And Dietary Copper On Feedlot Cattle Performance, Carcass Characteristics, And Fatty Acid Composition Of Beef (2012), C.A. Alvarado, C.C. Aperce, K.A. Miller, C.L. Van Bibber, S. Uwituze, James J. Higgins, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Human diets often contain high levels of saturated fatty acids that can have deleterious health consequences such as obesity, diabetes, and heart disease. In contrast, omega-3 fatty acids, which are essential for human nutrition, are consumed at relatively low levels despite of their positive effects on health. Natural sources of omega-3 fatty acids include fresh legumes, cool-season grasses, flaxseed, and fish oil. In spite of the fact that fresh forages often are a key part of the cattle diet, beef is a relatively poor source of omega-3 fatty acids because of biohydrogenation, the action of microorganisms in the rumen that …


Comparison Of The Effects Of Three Different Dehorning Techniques On Behavior And Performance In Feeder Cattle In A Western Kansas Feedlot (2012), C.D. Neely, C.A. Kerr, David E. Anderson, Daniel U. Thomson, Christopher D. Reinhardt Jan 2012

Comparison Of The Effects Of Three Different Dehorning Techniques On Behavior And Performance In Feeder Cattle In A Western Kansas Feedlot (2012), C.D. Neely, C.A. Kerr, David E. Anderson, Daniel U. Thomson, Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Removing the horns of cattle when they arrive at feeding facilities is a common practice to reduce injury to other cattle. Bruising on carcasses of cattle that have been housed in pens containing horned cattle increases noticeably. Horned feeder cattle marketed in Arkansas regional livestock auction barns received average discounts of $3.23/cwt in 2005, giving producers the incentive to dehorn their cattle before marketing. Three common techniques (tipping, dehorning, and banding) are utilized in the field to remove or reduce horn length in beef cattle. Tipping is the practice of removing the tip of the horn such that the diameter …


Feeding Crude Glycerin Decreases Fecal Shedding Of E. Coli O157:H7 In Growing Cattle (2012), C. Aperce, James S. Drouillard Jan 2012

Feeding Crude Glycerin Decreases Fecal Shedding Of E. Coli O157:H7 In Growing Cattle (2012), C. Aperce, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Crude glycerin is a byproduct of ethanol production and is used as a carbohydrate source for cattle feed. Glycerin levels in previous studies have ranged from 0 to 20% of diet dry matter, and concentrations of 8% or less generally improve feedlot performance. At even low levels of glycerin, however, the activity of cellulolytic bacteria is depressed, ultimately leading to poorer fiber digestion. This observation suggests that glycerin may affect a specific population of bacteria in the gut. Crude glycerin can account for 8 to 10% of the weight of dried distillers grains with solubles, because it is one of …


Direct-Fed Microbials For Receiving Cattle Ii: Effects Of Proternative Stress Formula Fed In A Dry Suspension On Growth, Feed Intake, And Health Of Receiving Beef Heifers (2012), A.V. Siverson, M.E. Corrigan, James J. Higgins, Dale A. Blasi, Brandon E. Oleen Jan 2012

Direct-Fed Microbials For Receiving Cattle Ii: Effects Of Proternative Stress Formula Fed In A Dry Suspension On Growth, Feed Intake, And Health Of Receiving Beef Heifers (2012), A.V. Siverson, M.E. Corrigan, James J. Higgins, Dale A. Blasi, Brandon E. Oleen

Kansas Agricultural Experiment Station Research Reports

Enhanced preconditioning and nutritional management strategies are needed industrywide as a means of controlling stress and related health problems for freshly arrived stocker calves. Direct-fed microbials are feed additives that stimulate natural, nonpathogenic gut flora in an attempt to stimulate competition against potentially pathogenic gut flora. Previous research involving direct-fed microbials offered in a liquid suspension to lightweight stocker calves produced no effects on growth or health performance. Therefore, the objective of our study was to evaluate the effects of a directfed microbial offered as a dry suspension on feed intake, average daily gain, and morbidity of highly stressed beef …


Effect Of Transportation On E. Coli O157:H7 Prevalence And Coliform Concentrations In Feces Of Feedlot Cattle (2012), C. Aperce, James S. Drouillard Jan 2012

Effect Of Transportation On E. Coli O157:H7 Prevalence And Coliform Concentrations In Feces Of Feedlot Cattle (2012), C. Aperce, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Foodborne illness from Escherichia coli O157:H7 is a major concern for the food industry. Contamination of food products can occur at slaughter by contact with hide or feces. Limiting E. coli O157:H7 shedding is important to prevent outbreaks. Previous studies have demonstrated a relationship between stress and levels of pathogens shed in feces. During transport to the slaughterhouse, animals are subjected to large amounts of stress. This stress could increase shedding of E. coli O157:H7 prior to slaughter, and in so doing increase the risk of contamination of beef products by contact with hides or feces. Our objective in this …


2012 Agricultural Research Southeast Agricultural Research Center, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service Jan 2012

2012 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.


Director's Report Of Research In Kansas 2012, Kansas State University. Agricultural Experiment Station Jan 2012

Director's Report Of Research In Kansas 2012, Kansas State University. Agricultural Experiment Station

Kansas Agricultural Experiment Station Research Reports

This report contains the title, author, and publication information for manuscripts published by station scientists.


The Effects Of Soybean Hulls And Their Particle Size On Growth Performance And Carcass Characteristics Of Finishing Pigs (2012), D L. Goehring, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2012

The Effects Of Soybean Hulls And Their Particle Size On Growth Performance And Carcass Characteristics Of Finishing Pigs (2012), D L. Goehring, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,235 pigs (PIC 337 × 1050; initially 68.4 lb) were used in a 118-d study to determine the effects of 7.5 and 15% ground or unground soybean hulls on growth performance and carcass characteristics of finishing pigs raised in a commercial environment. Pens of pigs were balanced by initial weight and randomly allotted to 1 of 5 dietary treatments in a completely randomized design with 26 to 28 pigs per pen and 9 replications per treatment. Treatments were arranged in a 2 × 2 factorial, and main effects were soybean hull particle size (unground or ground, 787 …


Effects Of Lowering Dried Distillers Grains With Solubles And Wheat Middlings With Or Without The Addition Of Choice White Grease Prior To Marketing On Finishing Pig Growth Performance, Carcass Characteristics, Carcass Fat Quality, And Intestinal Weights (2012), M D. Asmus, Michael D. Tokach, Steven S. Dritz, Robert D. Goodband, Terry A. Houser, Joel M. Derouchey, Jim L. Nelssen Jan 2012

Effects Of Lowering Dried Distillers Grains With Solubles And Wheat Middlings With Or Without The Addition Of Choice White Grease Prior To Marketing On Finishing Pig Growth Performance, Carcass Characteristics, Carcass Fat Quality, And Intestinal Weights (2012), M D. Asmus, Michael D. Tokach, Steven S. Dritz, Robert D. Goodband, Terry A. Houser, Joel M. Derouchey, Jim L. Nelssen

Kansas Agricultural Experiment Station Research Reports

A total of 225 pigs (PIC 327 × 1050, initially 100.1 lb) were used in a 92-d study to determine the effects of withdrawing high-fiber diets 19 d before market on growth performance, carcass characteristics, fat quality, and intestinal weights of finishing pigs. Pigs were allotted to 1 of 7 dietary treatments (5 or 6 pens/treatment). Treatments were arranged in a 2 × 3 factorial plus control with main effects of added choice white grease (CWG; 0 or 3%) during the withdrawal period (d 73 to 92) and fiber levels of low (corn-soybean meal diet), medium (9.5% wheat middlings [midds] …


Effect Of Sampling Method On The Accuracy And Precision Of Estimating The Mean Pig Weight Of The Population (2012), C B. Paulk, G L. Highland, K D. Haydon, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz Jan 2012

Effect Of Sampling Method On The Accuracy And Precision Of Estimating The Mean Pig Weight Of The Population (2012), C B. Paulk, G L. Highland, K D. Haydon, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Producers have adopted marketing strategies such as topping to help reduce economic losses from weight discounts at the processing plant. Despite adopting these strategies, producers are still missing target weights and incurring discounts. One contributing factor is the error of sampling methods that producers use to estimate the mean weight of the population to determine the optimal time to top pigs. The standard sample size that has been adopted by many producers is 30 pigs. Our objective was to determine the best method for selecting 30 pigs to improve the accuracy and precision of estimating the mean pig weight of …


Meta-Analysis Comparing Growth Performance, Carcass Characteristics, And Water Usage Of Growing-Finishing Pigs Fed Using Conventional Dry And Wet-Dry Feeders (2012), S Nitikanchana, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2012

Meta-Analysis Comparing Growth Performance, Carcass Characteristics, And Water Usage Of Growing-Finishing Pigs Fed Using Conventional Dry And Wet-Dry Feeders (2012), S Nitikanchana, Michael D. Tokach, Joel M. Derouchey, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Fifteen trials were used for meta-analyses comparing the effects of conventional dry (CD) and wet-dry (WD) feeders on growth performance, carcass traits, and water usage of growing-finishing pigs. The meta-analysis indicated that pigs fed with WD feeders consistently had greater (P<0.01) ADG (0.09 lb/d) and ADFI compared with those fed with CD feeders; however, although highly variable, no overall difference (P = 0.93) was observed in F/G. As a result of improved growth rate, final BW and HCW of pigs fed with WD feeders was 3.2% greater (P<0.01) than when fed with CD feeders. For carcass traits, backfat was greater (P<0.01) and percentage lean was lower (P<0.01) in pigs fed with WD feeders compared with those fed with CD feeders. Carcass yield and loin depth did not differ (P>0.14) among feeder types. Water usage for pigs fed with WD feeders was 0.4 gal/pig/d less (P = 0.02) than for pigs using CD feeders. Growing-finishing pigs fed with WD feeders had increased growth rate, feed intake, final BW, and HCW, but deposited more fat as indicated by greater backfat and lower percentage lean.; Swine Day, Manhattan, KS, November …


Effects Of Added Zn In Diets With Ractopamine Hcl On Growth Performance And Carcass Quality Of Finishing Pigs In A Commercial Environment (2012), C B. Paulk, K J. Prusa, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Steven S. Dritz Jan 2012

Effects Of Added Zn In Diets With Ractopamine Hcl On Growth Performance And Carcass Quality Of Finishing Pigs In A Commercial Environment (2012), C B. Paulk, K J. Prusa, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

The experiment was conducted in a commercial facility to determine the effects of added Zn on the performance of finishing pigs fed Ractopamine HCl (RAC; Paylean®; Elanco Animal Health, Greenfield, IN). Pigs were randomly assigned to pens based on gender (14 barrow pens, 11 gilt pens, and 23 mixed-gender pens), with 25 to 28 pigs per pen. Previously, pens of pigs were assigned to treatments containing 0, 7.5, or 15% bakery by-product in a completely randomized design while balancing for initial BW and gender. On d 75, treatments were implemented to determine the effects of adding 50 ppm Zn from …


Effect Of Diet Form And Feeder Adjustment On Growth Performance Of Nursery Pigs (2012), J E. Nemechek, E Fruge, E Hansen, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz Jan 2012

Effect Of Diet Form And Feeder Adjustment On Growth Performance Of Nursery Pigs (2012), J E. Nemechek, E Fruge, E Hansen, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Two experiments were conducted to determine the effect of feeder adjustment and diet form on growth performance of nursery pigs. In Exp. 1, a total of 210 nursery pigs (PIC 1050 × 327, initially 26.2 lb BW) were used in a 21-d trial. In Exp. 2, a total of 1,005 nursery pigs (Fast × PIC sows × TR4 boars, initially 31.1 lb BW) were used in a 28-d trial. Treatments in both experiments were arranged as 2 × 3 factorials with main effects of feeder adjustment and diet form. The 2 feeder adjustments consisted of a narrow feeder adjustment (minimum …


Effects Of Diet Form And Fiber Withdrawal Before Marketing On Growth Performance Of Growing-Finishing Pigs (2012), J E. Nemechek, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz Jan 2012

Effects Of Diet Form And Fiber Withdrawal Before Marketing On Growth Performance Of Growing-Finishing Pigs (2012), J E. Nemechek, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 288 pigs (PIC 327 × 1050, initially 109.3 lb BW) were used in an 81-d trial to determine the effects of diet form and fiber (from dried distillers grains with solubles [DDGS] and wheat middlings) withdrawal before harvest on growth performance of growing-finishing pigs. Treatments were arranged in a 2 × 3 factorial with the main effects of diet form and dietary fiber feeding regimen. The 2 diet forms were meal or pellet. The 3 fiber feeding regimens were (1) low dietary fiber (corn-soybean meal—based diets) from d 0 to 81, (2) high dietary fiber (30% DDGS …


Effects Of Replacing Soybean Meal With High-Protein Dried Distillers Grains With Solubles On Growth Performance, Carcass Characteristics, And Carcass Fat Quality In Finishing Pigs (2012), D L. Goehring, J L. Usry, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Steven S. Dritz Jan 2012

Effects Of Replacing Soybean Meal With High-Protein Dried Distillers Grains With Solubles On Growth Performance, Carcass Characteristics, And Carcass Fat Quality In Finishing Pigs (2012), D L. Goehring, J L. Usry, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 204 barrows and gilts (PIC, 337 × 1050, initially 129.6 lb) were used in a 73-d study to determine the effects of replacing soybean meal (SBM) with high-protein dried distillers grains with solubles (HPDDGS) on growth performance, carcass characteristics, and carcass fat quality in finishing pigs. Pens of pigs (3 barrows and 3 gilts per pen) were randomly allotted by initial BW to 1 of 4 treatments with 8 or 9 replications per treatment. All pigs were fed diets with 15% HPDDGS for 10 d prior to the start of the study. Treatments included: (1) corn-soybean meal …


Effects Of Increasing Dietary Wheat Middlings And Dried Distillers Grains With Solubles On Nursery Pig Growth Performance (2012), J A. De Jong, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz Jan 2012

Effects Of Increasing Dietary Wheat Middlings And Dried Distillers Grains With Solubles On Nursery Pig Growth Performance (2012), J A. De Jong, Joel M. Derouchey, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 180 pigs (PIC 327 × 1050, initially 26.9 lb BW) were used in a 21-d trial to evaluate the effects of increasing dietary wheat middlings (midds) and dried distillers grains with solubles (DDGS) on nursery pig growth performance. Pens of pigs were balanced by initial BW and were randomly allotted to 1 of 6 dietary treatments with 5 replications per treatment. The 6 corn-soybean meal—based diets were arranged in a 2 × 3 factorial with main effects of DDGS (0 or 20%) and wheat midds (0, 10, or 20%). Diets were not balanced for energy, so as …


Effects Of Increasing Dietary Bakery By-Product On Growing-Finishing Pig Growth Performance And Carcass Quality (2012), C B. Paulk, S Nitikanchana, K J. Prusa, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz Jan 2012

Effects Of Increasing Dietary Bakery By-Product On Growing-Finishing Pig Growth Performance And Carcass Quality (2012), C B. Paulk, S Nitikanchana, K J. Prusa, Michael D. Tokach, Robert D. Goodband, Joel M. Derouchey, Jim L. Nelssen, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 1,263 pigs (PIC 337 × 1050; initially 77.8 lb) were used in a 102-d study to determine the effects of dietary bakery by-product on pig growth performance and carcass quality. Pigs were randomly assigned to pens based on gender (14 barrow pens, 11 gilt pens, and 23 mixed-gender pens). Pens of pigs were allotted to 1 of 3 dietary treatments in a completely randomized design while balancing for initial BW and gender. Dietary treatments included 0, 7.5, and 15% bakery by-product. On d 84, the 5 heaviest pigs from each pen (determined visually) were sold according to …


Effects Of Ingredients Of Plant And Animal Origin On Nursery Pig Performance (2012), K M. Jones, K M. Sotak, S A. Lawson, Joe D. Hancock Jan 2012

Effects Of Ingredients Of Plant And Animal Origin On Nursery Pig Performance (2012), K M. Jones, K M. Sotak, S A. Lawson, Joe D. Hancock

Kansas Agricultural Experiment Station Research Reports

A total of 224 weanling pigs were used in a 34-d growth assay. The pigs were sorted by gender and ancestry, blocked by BW, and assigned to pens (7 pigs/pen and 8 pens/ treatment) in a randomized complete block design. From d 0 to 10, treatments were arranged as a 2 × 2 factorial with main effects of primary protein sources (plant vs. animal) and inclusion of soybean meal (none vs. 30%). The plant products diets had wheat gluten and corn gluten, and the animal products diets had animal plasma and fish meal as primary protein sources. All diets were …


An Evaluation Of Dietary Natural Zeolite Or Humic Acid Substances And Sulfate Water On Nursery Pig Performance (2012), J R. Flohr, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Steven S. Dritz Jan 2012

An Evaluation Of Dietary Natural Zeolite Or Humic Acid Substances And Sulfate Water On Nursery Pig Performance (2012), J R. Flohr, Michael D. Tokach, Jim L. Nelssen, Joel M. Derouchey, Robert D. Goodband, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

A total of 350 nursery pigs (PIC 1050 barrows, initially 21 d of age) were used in a 21-d study to determine the effects of high-sulfate water, dietary natural zeolite, and dietary humic substances on growth performance and fecal consistency of nursery pigs. Ten treatments were arranged as a 2 × 5 factorial with 2 water treatments (control or water with 2,000 ppm sodium sulfate) and 5 dietary treatments (control, 1 or 2% zeolite, 1% humic acid substance [HA], or 1% humic and fulvic acid blended substance [HFB]). Water treatments remained the same from d 0 to 21 and all …


An Evaluation Of Supplemental Vitamin D3 On Growth Performance Of Pigs Pre- And Postweaning, Nursery Feed Preference, And Serum 25(Oh)D3 (2012), J R. Flohr, Steven C. Henry, M L. Potter, N S. Shelton, L Greiner, J Conner, C W. Hastad, D Murray, R Cain, K Frerichs, E L. Hansen, E Fruge, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz Jan 2012

An Evaluation Of Supplemental Vitamin D3 On Growth Performance Of Pigs Pre- And Postweaning, Nursery Feed Preference, And Serum 25(Oh)D3 (2012), J R. Flohr, Steven C. Henry, M L. Potter, N S. Shelton, L Greiner, J Conner, C W. Hastad, D Murray, R Cain, K Frerichs, E L. Hansen, E Fruge, Michael D. Tokach, Robert D. Goodband, Jim L. Nelssen, Joel M. Derouchey, Steven S. Dritz

Kansas Agricultural Experiment Station Research Reports

Three experiments were conducted to evaluate the effects of supplementing different concentrations and sources of vitamin D3 on pig performance, feed preference, and serum 25(OH)D3. In Exp. 1, a total of 398 barrows from 80 litters (PIC 1050, initially 7 d of age) were used in a 38-d study in a 2 × 2 factorial to determine the effects of vitamin D3 supple¬mentation from either a single oral dose or from high levels of vitamin D3 in early nurs¬ery diets on pig performance and serum 25(OH)D3. On d 7 after birth, matched sets of pigs within litters were allotted to …


Evaluation Of Yogurt With Enhanced Cysteine Content (2012), Soumya Bala, Karen A. Schmidt Jan 2012

Evaluation Of Yogurt With Enhanced Cysteine Content (2012), Soumya Bala, Karen A. Schmidt

Kansas Agricultural Experiment Station Research Reports

Amino acids are the building blocks of protein and assist with metabolism in the body. In the human body, the amino acid cysteine can be synthesized from methionine by the enzyme Î¥-cystathionase. Because certain human subpopulations such as those prone to cataracts have decreased Î¥-cystathionase activity, dietary cysteine may be beneficial. Nutritionally, yogurt mix is one of the best dairy food sources of methionine and cysteine, but the heat treatment used in manufacturing yogurt decreases the dietary availability of cysteine. Last year, it was shown that supplementing yogurt mixes with whey protein isolate (WPI) (>90% protein) and processing yogurt …


Reinsemination Intervals After Timed Artificial Insemination Or Estrus-Detected Inseminations (2012), Jeffrey S. Stevenson Jan 2012

Reinsemination Intervals After Timed Artificial Insemination Or Estrus-Detected Inseminations (2012), Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

The objective was to quantify the reinsemination intervals of lactating dairy cows that were either inseminated at estrus or received a timed AI (TAI) at first service. Cows in Experiment 1 were enrolled in a TAI program before first AI after calving. Cows detected in estrus after 50 days in milk (DIM) were inseminated, whereas the remainder continued in the TAI program and were inseminated as scheduled. Cows in Experiment 2 also were enrolled in a TAI program and were inseminated accordingly at first service after calving. On day 7 after TAI, cows were assigned randomly to receive either saline …


Presynchronizing Prostaglandin F2Α Injection Before Timed Artificial Insemination Co-Synch + Cidr Program (2012), Scott L. Hill, Stephanie Leeann Pulley, H.I. Jr. Mellieon, K. C. Olson, John R. Jaeger, Ryan M. Breiner, G.A. Perry, G.C. Lamb, Jeffrey S. Stevenson Jan 2012

Presynchronizing Prostaglandin F2Α Injection Before Timed Artificial Insemination Co-Synch + Cidr Program (2012), Scott L. Hill, Stephanie Leeann Pulley, H.I. Jr. Mellieon, K. C. Olson, John R. Jaeger, Ryan M. Breiner, G.A. Perry, G.C. Lamb, Jeffrey S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Fixed-time artificial insemination is an effective management tool that reduces the labor associated with more conventional programs that require detection of estrus. The 7-day CO-Synch + controlled internal drug release (CIDR) insert protocol has been shown to effectively initiate estrus and ovulation in cycling and non-cycling suckled beef cows, producing pregnancy rates at or greater than 50% in beef cows. The gonadotropin- releasing hormone (GnRH) injection that begins the CO-Synch + CIDR program initiates ovulation in a large proportion of cows, particularly anestrous cows. The CIDR, which releases progesterone intravaginally, prevents short estrous cycles that usually follow the first postpartum …


Spring Burning Of Native Tallgrass Pastures Influences Diet Composition Of Lactating And Non-Lactating Beef Cows (2012), N.A. Aubel, G.J. Eckerle, L.A. Pacheco, M.J. Macek, L.R. Mundell, K. C. Olson, John R. Jaeger, Leigh W. Murray Jan 2012

Spring Burning Of Native Tallgrass Pastures Influences Diet Composition Of Lactating And Non-Lactating Beef Cows (2012), N.A. Aubel, G.J. Eckerle, L.A. Pacheco, M.J. Macek, L.R. Mundell, K. C. Olson, John R. Jaeger, Leigh W. Murray

Kansas Agricultural Experiment Station Research Reports

Diet selection is a dynamic process because of seasonal changes in animal and plant characteristics. Nutrient requirements of grazing animals are a function of physiological state; moreover, plant characteristics may be altered with prescribed spring burning of native rangelands. Prescribed spring burning is used to improve the average quality of pasture forage by removing old growth and making new plant growth more accessible to grazing cattle. Microhistological analysis of fecal material has been a widely used method for quantifying the botanical composition of a grazing animal's diet since it was first described by Baumgartner and Martin in 1939. Little research …


Led Lighting Extends Color Shelf Life For Three Beef Products Compared With Fluorescent Lighting (2012), K.S. Steele, M.J. Weber, Elizabeth A.E. Boyle, A.S. Lobaton-Sulabo, C. Cundith, Y.H. Hiebert, K.A. Abrolat, J.M. Attey, S.D. Clark, D. Johnson Jan 2012

Led Lighting Extends Color Shelf Life For Three Beef Products Compared With Fluorescent Lighting (2012), K.S. Steele, M.J. Weber, Elizabeth A.E. Boyle, A.S. Lobaton-Sulabo, C. Cundith, Y.H. Hiebert, K.A. Abrolat, J.M. Attey, S.D. Clark, D. Johnson

Kansas Agricultural Experiment Station Research Reports

Consumers are not able to estimate tenderness, juiciness, or flavor when selecting beef cuts at retail stores. Instead, they rely on color as one of the major criteria to select beef cuts. During refrigerated display, fresh meat color changes and consumers discriminate against discolored meats. Meat items with discoloration must be discounted or discarded, leading to up to $1 billion in revenue loss nationally for the meat industry. Lighting type and intensity have a major impact on the appearance and shelf life of fresh beef in refrigerated retail display. Light emitting diode (LED) lighting offers advantages for display because it …


Bedding Material In Dirt-Floor Pens Reduces Heat (2012), D.J. Rezac, Daniel U. Thomson, Christopher D. Reinhardt Jan 2012

Bedding Material In Dirt-Floor Pens Reduces Heat (2012), D.J. Rezac, Daniel U. Thomson, Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Weather-related stressors are a well-recognized opponent to animal welfare and can have important ramifications for animal performance. Sound animal husbandry practices historically have attempted to diminish the effects of deleterious environmental factors. Providing aid to animals when temperatures are above or below their thermal neutral zone (TNZ) can improve animal welfare and/or performance. Because most breeds of cattle are not well equipped to deal with heat, the temperatures at which heat stress can begin to affect cattle can be surprisingly low. The onset of mild heat stress can occur at a temperature humidity index (THI1) value of 75, which can …


Agreement Between Observational And Necropsy-Derived Diagnosis For Cause Of Death For Cattle In A Commercial Beef Feedlot (2012), D. Anspaugh, Benjamin W. Wileman, M. Apley, W. Taylor, T. Noffsinger, Daniel U. Thomson, Christopher D. Reinhardt Jan 2012

Agreement Between Observational And Necropsy-Derived Diagnosis For Cause Of Death For Cattle In A Commercial Beef Feedlot (2012), D. Anspaugh, Benjamin W. Wileman, M. Apley, W. Taylor, T. Noffsinger, Daniel U. Thomson, Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Necropsy information is an integral component for monitoring feedlot disease and designing preventive and therapeutic strategies; however, field necropsy is a laborious and time-consuming procedure and may be an occupational hazard because personnel can become injured or be exposed to zoonotic disease while conducting necropsies. The objective of this study was to determine the accuracy of a pre-necropsy mortality diagnoses made by feedlot personnel compared with diagnoses made from necropsy results.


Comparative Efficacy Of Two Ivermectin Pour-On Anthelmintics In Beef Steers In A Commercial Feedyard (2012), A.J. Tarpoff, T. Guichon, Daniel U. Thomson, Benjamin W. Wileman, Christopher D. Reinhardt Jan 2012

Comparative Efficacy Of Two Ivermectin Pour-On Anthelmintics In Beef Steers In A Commercial Feedyard (2012), A.J. Tarpoff, T. Guichon, Daniel U. Thomson, Benjamin W. Wileman, Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Generic products generally have a cost advantage for beef producers over brand-name products. Recently, many beef producers have debated whether to utilize generic anthelmintics in cow/calf herds and feeder cattle. If generics are to be justified, the products must be proven to have efficacy similar to the brand-name product. Previous studies have indicated that generic macrocyclic lactones are less effective in controlling gastrointestinal parasites of cattle than the original brand-name products. The objective of this study was to compare the efficacy of Vetrimec (Norbrook Laboratories Limited, Newry, Co. Down, Northern Ireland) pour-on and Ivomec (Merial Animal Health, Duluth, GA) pour-on …


Vaccinating With Srp E. Coli Does Not Affect Feeder Cattle Performance, Health, Or Carcass Characteristics (2012), D.J. Rezac, B.A. Butler, Daniel U. Thomson, Benjamin W. Wileman, Christopher D. Reinhardt Jan 2012

Vaccinating With Srp E. Coli Does Not Affect Feeder Cattle Performance, Health, Or Carcass Characteristics (2012), D.J. Rezac, B.A. Butler, Daniel U. Thomson, Benjamin W. Wileman, Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Siderophore-receptor and porin-based (SRP) Escherichia coli vaccine technology functions by starving the E. coli organism via competitive exclusion for proteins that scavenge iron, an essential nutrient for E. coli viability. Vaccination with SRP E. coli technology decreased the prevalence of E. coli O157:H7 in artificially inoculated cattle and in cattle naturally shedding the organism. Examination of the effects that SRP E. coli vaccines exert on performance parameters has yet to be attempted in a commercial setting. The use of SRP E. coli vaccine technology effectively decreases the prevalence of E. coli O157:H7 in feeder cattle and may improve beef safety; …