Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

Journal

Kansas Agricultural Experiment Station Research Reports

2012

Discipline
Keyword

Articles 1 - 30 of 79

Full-Text Articles in Life Sciences

Hot Topic: New Research Highlights The Need For Holistic Thinking About Transition Cows, Barry J. Bradford Jan 2012

Hot Topic: New Research Highlights The Need For Holistic Thinking About Transition Cows, Barry J. Bradford

Kansas Agricultural Experiment Station Research Reports

In the past, efforts to improve the transition to lactation have focused largely on preventing infections and maximizing energy intake in transition cows, and these issues have generally been treated independently. New models, however, are emerging to explain the development of numerous transition disorders. A combination of insults, including social stress, negative energy balance, heat stress, endotoxin exposure, and oxidative stress may promote inflammation, suppress feed intake, and impair both metabolic and immune function during the transition period. These models suggest that transition cow management must be viewed holistically, because the cow's environment, nutrition, and immune function interact in ...


Kansas Fertilizer Research 2011, Dorivar Ruiz Diaz Jan 2012

Kansas Fertilizer Research 2011, Dorivar Ruiz Diaz

Kansas Agricultural Experiment Station Research Reports

No abstract provided.


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

Field Research 2012, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service

Kansas Agricultural Experiment Station Research Reports

Includes research reports from these locations: East Central Kansas Experiment Field, Kansas River Valley Experiment Field, and Western Kansas Agricultural Research Centers.


Carryover Effects Of Crude Glycerin Fed During The Growing Phase On Finishing Cattle Performance And Carcass Characteristics, C. C. Aperce, J. S. Drouillard Jan 2012

Carryover Effects Of Crude Glycerin Fed During The Growing Phase On Finishing Cattle Performance And Carcass Characteristics, C. C. Aperce, J. S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Crude glycerin is a byproduct of biodiesel production, and its use as a feedstuff for cattle has expanded in the last decade due to increased availability and favorable pricing compared with other energy concentrates such as cereal grains. Incorporation of glycerin into cereal-based finishing diets, at levels up to 8%, has been shown to improve cattle performance; however, it decreases activity of cellulolytic microorganisms in the rumen, ultimately decreasing fiber digestion. Most of the studies conducted to date have evaluated glycerin in finishing diets that contain relatively small amounts of fiber, but little is known of its value as an ...


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

Bedding Material In Dirt-Floor Pens Reduces Heat, 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 ...


Relationships Between Feedlot Health, Average Daily Gain, And Carcass Traits Of Angus Steers, 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, 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.


Agreement Between Observational And Necropsy-Derived Diagnosis For Cause Of Death For Cattle In A Commercial Beef Feedlot, 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, 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, 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, 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 ...


Comparison Of The Effects Of Three Different Dehorning Techniques On Behavior And Performance In Feeder Cattle In A Western Kansas Feedlot, 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, 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 ...


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

Effect Of Transportation On E. Coli O157:H7 Prevalence And Coliform Concentrations In Feces Of Feedlot Cattle, 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 ...


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

Direct-Fed Microbials For Receiving Cattle I: Effects Of Proternative Stress Formula Fed In A Liquid Suspension On Growth And Health Performance Of Receiving Beef Heifers, A.V. Siverson, M.E. Corrigan, James J. Higgins, Dale A. Blasi, Brandon E. Oleen

Kansas Agricultural Experiment Station Research Reports

Lightweight stocker calves experience variable degrees of physiological stress resulting from weaning, transport, food and water deprivation, diet changes, inclement weather, and infectious diseases. Consequently, preconditioning and specialized nutrition that include direct-fed microbials may become more common in the beef industry as a means of controlling disease and minimizing the effects of stress.


Presynchronizing Prostaglandin F2Α Injection Before Timed Artificial Insemination Co-Synch + Cidr Program, 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, 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 ovulation in ...


Increasing Protein Supply To Pregnant Beef Cows When Energy Is Limited Does Not Improve Cow Or Calf Performance, E.A. Bailey, Evan C. Titgemeyer, R.C. Cochran, Timothy J. Jones, K. C. Olson Jan 2012

Increasing Protein Supply To Pregnant Beef Cows When Energy Is Limited Does Not Improve Cow Or Calf Performance, E.A. Bailey, Evan C. Titgemeyer, R.C. Cochran, Timothy J. Jones, K. C. Olson

Kansas Agricultural Experiment Station Research Reports

Pre- and postpartum deficiencies of metabolizable protein have been identified as potentially limiting to productivity of beef cows and calves. Pre-partum supplementation of forage-based diets with ruminally undegraded protein has increased weight gain and breeding performance in prior studies, but the level of ruminally degraded protein fed was not known. Feeding adequate ruminally degraded protein to beef cows maximizes the productivity of microbes in the rumen, so any benefits shown in prior work could have been attributed to increased ruminal fermentation. Our objectives were (1) to determine the value of supplementing ruminally undegraded protein when dietary ruminally degraded protein supply ...


Effects Of Corn Steep Liquor Supplementation On Intake And Digestion Of Tallgrass Prairie Hay Contaminated With Sericea Lespedeza, G.J. Eckerle, L.A. Pacheco, K. C. Olson, John R. Jaeger Jan 2012

Effects Of Corn Steep Liquor Supplementation On Intake And Digestion Of Tallgrass Prairie Hay Contaminated With Sericea Lespedeza, G.J. Eckerle, L.A. Pacheco, K. C. Olson, John R. Jaeger

Kansas Agricultural Experiment Station Research Reports

Sericea lespedeza (Lespedeza cuneata) is a noxious weed that infests approximately 600,000 acres of native range in Kansas. Intake of sericea lespedeza by grazing beef cattle is poor due to the presence of condensed tannins in the plant. Condensed tannins reduce protein digestion by beef cattle and may also decrease plant palatability because of their astringent nature. Prolific seed production, in combination with little or no grazing pressure, has contributed to the rapid spread of sericea lespedeza in the Flint Hills. Increasing grazing pressure on sericea lespedeza may reduce seed production and slow its advance; however, the presence of ...


Mga And Growth Promotants Administered To Beef Feedlot Heifers Have No Effect On Subsequent Oocyte Quality Or In Vitro Embryo Production, N. Miller, David M. Grieger, Karol E. Fike Jan 2012

Mga And Growth Promotants Administered To Beef Feedlot Heifers Have No Effect On Subsequent Oocyte Quality Or In Vitro Embryo Production, N. Miller, David M. Grieger, Karol E. Fike

Kansas Agricultural Experiment Station Research Reports

Beef feedlot heifers have the potential to serve as viable donors of oocytes post-slaughter for in vitro embryo production. Oocyte quality is a critical factor affecting the success of in vitro embryo production and can be influenced by factors such as age and reproductive status, ovarian follicle size, and nutritional status of the donor female. In a conventional feedlot setting, heifers are typically administered steroid-based growth promotants and fed melengestrol acetate (MGA) for suppression of estrus, which increases circulating concentrations of reproductive steroids, particularly estradiol. The effects of these management practices on oocyte quality and numbers are unknown. The purpose ...


Accelerated Step-Up Regimes For Feedlot Heifers Following Oral Dosing With Lactipro (Megasphaera Elsdenii Strain Ncimb 41125), K. Miller, C.L. Van Bibber, James S. Drouillard Jan 2012

Accelerated Step-Up Regimes For Feedlot Heifers Following Oral Dosing With Lactipro (Megasphaera Elsdenii Strain Ncimb 41125), K. Miller, C.L. Van Bibber, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Cattle entering feedlots typically are adapted to finishing diets over a period of 2 to 4 weeks by gradually replacing forages with concentrate feeds using a series of step-up diets. Without proper adaptation, naïve cattle are highly susceptible to ruminal acidosis, a disorder associated with excessive production and accumulation of organic acids within the rumen. One of the key metabolic intermediates associated with the manifestation of acidosis is lactic acid, which is derived from fermentation of readily available starches and sugars. Streptococcus bovis is a prolific, rapidly growing, and opportunistic organism that thrives in the presence of readily fermented starches ...


Zilmax Alters Blood Constituents Of Finishing Cattle, C.L. Van Bibber, James S. Drouillard Jan 2012

Zilmax Alters Blood Constituents Of Finishing Cattle, C.L. Van Bibber, James S. Drouillard

Kansas Agricultural Experiment Station Research Reports

The purpose of this experiment was to determine the effects of Zilmax (Merck Animal Health, Summit, NJ) on changes in blood metabolites. Zilmax is a feed additive designed to improve production efficiency in cattle when fed during the last phase at the feedlot. Zilmax works by redirecting the energy use in the body to form more lean muscle at the expense of fat deposition. The blood metabolites measured in our experiment were glucose and lactate, which are the energy sources for various body functions including muscle growth. Plasma urea nitrogen was measured as an indicator of protein catabolism. Non-esterified fatty ...


Led Lighting Extends Color Shelf Life For Three Beef Products Compared With Fluorescent Lighting, 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, 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 ...


A Commercially Available Srp Vaccine Reduces Prevalence Of E. Coli O157:H7 In Feces Of Beef Cattle Under Commercial Feedlot Conditions, B.A. Butler, G.H. Loneragan, Daniel U. Thomson, Tiruvoor G. Nagaraja, Christopher D. Reinhardt Jan 2012

A Commercially Available Srp Vaccine Reduces Prevalence Of E. Coli O157:H7 In Feces Of Beef Cattle Under Commercial Feedlot Conditions, B.A. Butler, G.H. Loneragan, Daniel U. Thomson, Tiruvoor G. Nagaraja, Christopher D. Reinhardt

Kansas Agricultural Experiment Station Research Reports

Of all food safety challenges facing the beef industry, Escherichia coli O157:H7 has consistently presented the greatest economic remonstrance to meat packers and retailers. Cattle naturally shed E. coli O157:H7 in their feces, and it is a source of carcass contamination at harvest. If contaminated trim enters the food supply and is subsequently prepared incorrectly, it can lead to the human condition known as hemorrhagic colitis. In children or elderly people, an E. coli O157:H7 infection may lead to a more serious form known as hemolytic uremic syndrome, which is potentially lethal. Although the majority of previous ...


Combined Microwave And Convection Cooking Increases Post-Cooking Temperature Rise Of Beef Biceps Femoris Muscles More Than Convection Cooking, A. Gaschler, Michael E. Dikeman Jan 2012

Combined Microwave And Convection Cooking Increases Post-Cooking Temperature Rise Of Beef Biceps Femoris Muscles More Than Convection Cooking, A. Gaschler, Michael E. Dikeman

Kansas Agricultural Experiment Station Research Reports

Combined microwave and convection cooking has gained popularity in the last 20 years because of more accurate heat control and more efficient use of energy. Combination microwave/convection cooking allows for more rapid cooking, but it does not have the same even heat distribution as convection cooking. Cooking is a critical stage when preparing meat. The main factors to consider during cooking are: temperature on the surface of meat, internal temperature throughout, and the method of heat transfer. Temperature on the surface and method of heat exchange primarily affect surface color and aroma, whereas internal temperature affects protein structure and ...


Effect Of Sample Size And Method Of Sampling Pig Weights On The Accuracy And Precision Of Estimating The Distribution Of Pig Weights In A Population, 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 Sample Size And Method Of Sampling Pig Weights On The Accuracy And Precision Of Estimating The Distribution Of Pig Weights In A Population, 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, but they are still missing target weights and incurring discounts. We have previously determined the accuracy of sampling methods producers use to estimate the mean weight of the population. Although knowing the mean weight is important, understanding how much variation or dispersion exists in individual pig weights within a group can also enhance a producer’s ability to determine the optimal time to top pigs. In statistics and probability theory, the amount of variation in a population is represented by the standard deviation; therefore ...


The Effects Of Wheat And Crystalline Amino Acids On Nursery And Finishing Pig Growth Performance And Carcass Characteristics, D L. Goehring, Joel M. Derouchey, Michael D. Tokach, Jim L. Nelssen, Robert D. Goodband, Steven S. Dritz Jan 2012

The Effects Of Wheat And Crystalline Amino Acids On Nursery And Finishing Pig Growth Performance And Carcass Characteristics, D L. Goehring, 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 evaluate the effects of wheat and crystalline amino acids on growth performance of nursery and finishing pigs. In Exp. 1, a total of 192 pigs (PIC, 337 × 1050, initially 26.7 lb BW) were used in a 21-d nursery study. Pigs were allotted to pens by initial BW, and pens were assigned to 1 of 4 dietary treatments in a completely randomized design with 6 pigs per pen and 8 replications per treatment. Treatments included: (1) corn-soybean meal diet, (2) diet 1 with wheat replacing approximately 50% of the corn, (3) wheat replacing 100 ...


An Evaluation Of Supplemental Vitamin D3 On Growth Performance Of Pigs Pre- And Postweaning, Nursery Feed Preference, And Serum 25(Oh)D3, 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, 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 ...


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.


Field Day 2012, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service Jan 2012

Field Day 2012, Kansas State University. Agricultural Experiment Station And Cooperative Extension Service

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.


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

Evaluation Of Yogurt With Enhanced Cysteine Content, 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 Υ-cystathionase. Because certain human subpopulations such as those prone to cataracts have decreased Υ-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 ...


Sodium Salicylate During The First 7 Days Of Lactation Affects The Entire Lactation, Jaymelynn K. Farney, Laman Mamedova, J. Ernest Minton, J. F. Coetzee Jan 2012

Sodium Salicylate During The First 7 Days Of Lactation Affects The Entire Lactation, Jaymelynn K. Farney, Laman Mamedova, J. Ernest Minton, J. F. Coetzee

Kansas Agricultural Experiment Station Research Reports

Inflammation has been proposed as a contributor to metabolic disorders in transition dairy cows. The purpose of this experiment was to determine if a non-steroidal anti-inflammatory drug, sodium salicylate (SS), benefits transition cows. At calving, 78 cows [primiparous (1P) n = 39; 2nd lactation (2P) n = 24; ≥3 lactations (3P) n = 15] were assigned alternately to either a control or SS treatment for 7 days and production responses were evaluated through the entire lactation. Treatment was administered via individual water bowls, delivering a mean of 123 ± 5.5 (mean ± standard deviation) grams salicylate per day during the 7 days of treatment ...


Meta-Analysis Of The Effects Of Dietary Sugar On Intake And Productivity Of Dairy Cattle, C. F. Vargas, Christopher D. Reinhardt, J. L. Firkins, Barry J. Bradford Jan 2012

Meta-Analysis Of The Effects Of Dietary Sugar On Intake And Productivity Of Dairy Cattle, C. F. Vargas, Christopher D. Reinhardt, J. L. Firkins, Barry J. Bradford

Kansas Agricultural Experiment Station Research Reports

A meta-analysis was performed to determine the possible effects of dietary sugar on feed intake and milk production in lactating dairy cattle. The database used in this analysis included 18 treatment comparisons frozm 10 studies reported from 1985 through 2011. Treatment comparisons were used only if: (1) either sucrose (9 comparisons) or molasses (9 comparisons) replaced corn grain without adding fat; and (2) sugar added by treatment ranged from 2 to 5% of dry matter. First, responses to sucrose and molasses were compared to assess whether these sugar sources could be considered together. Statistical analysis provided no evidence for different ...


Pregnancy Per Ai After Presynchronizing Estrous Cycles With Presynch-10 Or Pg-3-G Before Ovsynch-56 In Four Dairy Herds Of Lactating Dairy Cows, Jeffrey S. Stevenson, Stephanie Leeann Pulley Jan 2012

Pregnancy Per Ai After Presynchronizing Estrous Cycles With Presynch-10 Or Pg-3-G Before Ovsynch-56 In Four Dairy Herds Of Lactating Dairy Cows, Jeffrey S. Stevenson, Stephanie Leeann Pulley

Kansas Agricultural Experiment Station Research Reports

The objective was to determine the effect of 2 presynchronization treatments on first-service pregnancy rate in 4 dairy herds during warm and cool seasons of the year. Cows with ear tags ending with even digits at calving were enrolled in Presynch-10 with 2, 25-mg injections of prostaglandin F2α(i.e., PG-1 and PG-2) 14 days apart. Cows with ear tags ending with odd digits were enrolled in PG-3-G comprising 1, 25-mg injection of PG (Pre-PG) 3 days before 100 μg gonadotropin-releasing hormone (Pre-GnRH), with the Pre-PG injection administered at the same time as PG-2 in the Presynch-10 treatment in the ...


Effects Of Prepartum And Postpartum Bolus Injections Of Trace Minerals On Performance Of Beef Cows And Calves Grazing Native Range, L.R. Mundell, Jeffrey S. Stevenson, David M. Grieger, L.A. Pacheco, J.W. Bolte, N.A. Aubel, G.J. Eckerle, M.J. Macek, L.J. Havenga, K. C. Olson Jan 2012

Effects Of Prepartum And Postpartum Bolus Injections Of Trace Minerals On Performance Of Beef Cows And Calves Grazing Native Range, L.R. Mundell, Jeffrey S. Stevenson, David M. Grieger, L.A. Pacheco, J.W. Bolte, N.A. Aubel, G.J. Eckerle, M.J. Macek, L.J. Havenga, K. C. Olson

Kansas Agricultural Experiment Station Research Reports

Adequate dietary intakes of trace minerals are thought necessary to maximize cow reproduction, calf health, and calf performance. Diets grazed by beef cattle are generally deficient to marginal in copper (Cu), manganese (Mn), selenium (Se), and zinc (Zn) concentrations; therefore, these trace minerals are usually added to the diet in supplement form. The most widely used means of trace-mineral supplementation for grazing cattle is selffed, salt-based, loose mineral supplements. Although cattle do not balance their mineral needs when consuming a self-fed mineral supplement, usually no other practical way of supplying mineral needs exists under grazing conditions. The greatest limitation to ...