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Kansas Agricultural Experiment Station Research Reports
Kansas Agricultural Experiment Station contribution; no. 10-103-S; Report of progress (Kansas State University. Agricultural Experiment Station and Cooperative Extension Service); 1021; Dairy Day
Articles 1 - 13 of 13
Full-Text Articles in Life Sciences
Influences Of Heat Stress On Serological Response And Performance Of Dairy Calves (2009), Larry C. Hollis, Michael J. Brouk
Influences Of Heat Stress On Serological Response And Performance Of Dairy Calves (2009), Larry C. Hollis, Michael J. Brouk
Kansas Agricultural Experiment Station Research Reports
Objectives of this study were to investigate the possible effects of heat stress on calf growth and the development of active immunity. Eighteen heifer calves born between July 21 and August 24, 2008, were housed in individual hutches, and half of the calves were provided supplemental shade from birth to 8 weeks of age. During this time, milk replacer intake, dry feed intake, and fecal scores were recorded daily. Calf weight and hip and shoulder heights were measured and recorded weekly. The bovine viral diarrhea portion of the vaccine given at 5 weeks of age was used as an indicator …
Effect Of Acidulant Addition On Yogurt Fermentation (2009), Karen A. Schmidt
Effect Of Acidulant Addition On Yogurt Fermentation (2009), Karen A. Schmidt
Kansas Agricultural Experiment Station Research Reports
Yogurt was manufactured by pre-acidifying the yogurt mix with citric acid, lactic acid, or concentrated lemon juice either before or after pasteurization to a target pH of 6.2, and then the traditional manufacturing process was continued. Adding citric acid or lemon juice to the yogurt mix after pasteurization resulted in a 13% reduction in fermentation time compared with the control. This reduction in fermentation time may result in greater efficiency for yogurt manufacturers, allowing for a more sustainable manufacturing process.; Dairy Day, 2009, Kansas State University, Manhattan, KS, 2009; Dairy Research, 2009 is known as Dairy Day, 2009
Differences Among High, Medium, And Low Profitdairy Operations: An Analysis Of 2004-2008 Kansasfarm Management Association Dairy Enterprises (2009), K.M. Schulte, Kevin C. Dhuyvetter
Differences Among High, Medium, And Low Profitdairy Operations: An Analysis Of 2004-2008 Kansasfarm Management Association Dairy Enterprises (2009), K.M. Schulte, Kevin C. Dhuyvetter
Kansas Agricultural Experiment Station Research Reports
The financial bottom line, or net income, is a key factor in determining how successful a dairy has been historically as well as an indicator of the financial ease or struggles the dairy might have in the future. What causes net income to vary from one operation to another is a key question for dairy farmers. For example, does milk price received, feed cost, total cost, or milk production have the greatest impact on net return variability? In this study, we evaluated Kansas Farm Management Dairy Enterprise data from the past 5 years to determine correlation of revenue, production, and …
Land Requirements For Freestall Dairy Facilities (2009), Joseph P. Harner, John F. Smith
Land Requirements For Freestall Dairy Facilities (2009), Joseph P. Harner, John F. Smith
Kansas Agricultural Experiment Station Research Reports
Existing blueprints were used to estimate land requirements for new dairy facilities. The average land requirement for constructing a new dairy complex with freestall housing and a new parlor is 915 ft2 per lactating cow. Approximately 52% of the overall land space is used for dairy operations including a milk center, housing, transfer lanes, vehicle roads, a feed center, and a manure processing center. The remaining 48% is green space, areas between buildings or along driveways, and separation distance from main roads and neighboring property.; Dairy Day, 2009, Kansas State University, Manhattan, KS, 2009; Dairy Research, 2009 is known as …
Water Consumption Of An Evaporative Cooling Systemin The Midwest (2009), Joseph P. Harner, Smith John
Water Consumption Of An Evaporative Cooling Systemin The Midwest (2009), Joseph P. Harner, Smith John
Kansas Agricultural Experiment Station Research Reports
Water meters were installed on the evaporative cooling system of a long, low-profile, cross-ventilated dairy in the upper Midwest. The evaporative pad along the west side measured 10 by 350 ft. The water usage per unit surface area of the evaporative pad was 0.29 gallons/hour per square foot of evaporative pad surface area. The total daily water usage per stall averaged 13 gallons with a maximum of 22.7 gallons. Results from this study indicate that peak hourly water usage may be as much as 3 times the average values. The evaporative pad efficiency was 65% between noon and 0800 hours …
Temperature Changes In A Low-Profile,Cross-Ventilated Building In The High Plains (2009), Joseph P. Harner, John F. Smith
Temperature Changes In A Low-Profile,Cross-Ventilated Building In The High Plains (2009), Joseph P. Harner, John F. Smith
Kansas Agricultural Experiment Station Research Reports
Performance of an evaporative cooling system was evaluated in the High Plains in a low-profile, cross-ventilated dairy facility housing 4,200 lactating cows. The temperature decrease across the 6-inch cellulose evaporative pad during the afternoon hours from July 15 to August 14, 2008, was 12.6°F. The temperature-humidity index was below 72 for 14 and 19 hours/day in pens near the outlet (exhaust fans) and inlet (near evaporative cooling pad), respectively, compared with 12 hours under ambient conditions. Throughout the study period, the evaporative cooling system decreased the number of hours that cows were housed in a heat stress environment irrespective of …
Effects Of Encapsulated Niacin On Metabolism And Production Of Periparturient Holstein Cows (2009), Barry J. Bradford, Laman K. Mamedova
Effects Of Encapsulated Niacin On Metabolism And Production Of Periparturient Holstein Cows (2009), Barry J. Bradford, Laman K. Mamedova
Kansas Agricultural Experiment Station Research Reports
Niacin (nicotinic acid) can suppress lipolysis, but responses to dietary niacin have been inconsistent in cattle. A widely used commercial feed additive, niacin is thought to reduce heat stress and decrease postpartum plasma nonesterified fatty acid (NEFA) concentration. Raw niacin has poor stability in the rumen, however, and it is estimated that only 5% is bioavailable. Recently, an encapsulated niacin (EN) product with an estimated 40% bioavailability became commercially available, but its effects on health and metabolism in transition cows have not been tested previously. Twenty-two Holstein cows were used in a study beginning 21 days before expected calving; cows …
Impact Of Evaporative Pads And Cross Ventilation On Core Body Temperature And Resting Time Of Lactating Cows (2009), John F. Smith, Barry J. Bradford, Joseph P. Harner
Impact Of Evaporative Pads And Cross Ventilation On Core Body Temperature And Resting Time Of Lactating Cows (2009), John F. Smith, Barry J. Bradford, Joseph P. Harner
Kansas Agricultural Experiment Station Research Reports
A trial was conducted to determine the impact of evaporative cooling pads on core body temperature (CBT), time spent lying, and number of lying bouts of Holstein cows housed in cross-ventilated freestall facilities. Despite cool ambient conditions during the trial, cows without evaporative pads tended to have elevated CBT above 102°F for 2.3 more hours per day and elevated CBT above 102.5°F for 0.95 more hours per day than cows with evaporative pads. These trends were evident even though the stocking density of the freestalls was greater in the facility with evaporative pads than in the facility without pads (123 …
Dietary Molasses Increases Ruminal Ph And Enhances Ruminal Biohydrogenation During Milk Fat Depression (2009), Evan C. Titgemeyer, Barry J. Bradford
Dietary Molasses Increases Ruminal Ph And Enhances Ruminal Biohydrogenation During Milk Fat Depression (2009), Evan C. Titgemeyer, Barry J. Bradford
Kansas Agricultural Experiment Station Research Reports
Molasses has long been used in animal feeds for palatability and as a binding agent to ensure uniform consumption of essential nutrients. Recent work with molasses in highly fermentable diets has revealed that molasses might offer additional benefits in dairy rations. Feeding highconcentrate diets increases the risk of milk fat depression by disrupting the normal pathway of fatty acid biohydrogenation in the rumen. Preliminary research conducted at Kansas State University and other universities has indicated that dietary sugars have the potential to increase milk fat synthesis during milk fat depression. In this study, we sought to understand the reasons for …
Effects Of Feeding Increased Amounts Of Wet Corn Gluten Feed On Dairy Cow Metabolism And Milk Production (2009), Evan C. Titgemeyer, Barry J. Bradford
Effects Of Feeding Increased Amounts Of Wet Corn Gluten Feed On Dairy Cow Metabolism And Milk Production (2009), Evan C. Titgemeyer, Barry J. Bradford
Kansas Agricultural Experiment Station Research Reports
An experiment was conducted to evaluate the effects of feeding increasing dietary amounts of wet corn gluten feed (WCGF). Eight lactating Holstein cows were housed in a tie-stall facility and fed 1 of 4 diets containing 0, 11, 23, or 34% WCGF on a dry matter basis. To maintain similar nutrient concentrations, alfalfa hay, corn silage, corn grain, soybean meal, expeller soybean meal, and mineral supplements varied across diets. Feed intake, milk production, body weight, and body condition score were monitored, and effects of WCGF inclusion rate were assessed. Increasing the level of WCGF in the diet led to increased …
Impact Of Supplemental Phosphorus Source Onphosphorus Utilization In Lactating Dairy Cattle (2009), Barry J. Bradford, Joseph P. Harner, Michael J. Brouk
Impact Of Supplemental Phosphorus Source Onphosphorus Utilization In Lactating Dairy Cattle (2009), Barry J. Bradford, Joseph P. Harner, Michael J. Brouk
Kansas Agricultural Experiment Station Research Reports
Supplemental phosphorus (P) in various forms and sources (pellet, meal, liquid, and corn dried distillers grains with solubles; DDGS) were compared in 12 multiparous Holstein cows producing 94.8 lb of milk (115 ± 55 days in milk) in a 4 x 4 Latin square with 21-day periods. The pellet and meal diets contained monocalcium phosphate with a wheat middlings carrier, and the liquid diet contained ammonium polyphosphate in a cane molasses base. The DDGS supplied an organic P source. Cows were blocked by parity, days in milk, and milk production and randomly assigned to treatments. Phosphorus intakes were similar among …
Effects Of Acidified Fermentation By-Productsand Prepartum Dcad On Feed Intake, Performance, And Health Of Transition Dairy Cows (2009), Barry J. Bradford
Effects Of Acidified Fermentation By-Productsand Prepartum Dcad On Feed Intake, Performance, And Health Of Transition Dairy Cows (2009), Barry J. Bradford
Kansas Agricultural Experiment Station Research Reports
Two commercially available acidified fermentation by-products were evaluated in the close-up period (21 days before expected calving) for their effects on feed intake, postpartum performance, and cow health. Diets were formulated to contain similar protein and energy values but differed in dietary cation anion difference and anion source. Treatments were Bio-Chlor, SoyChlor, and a control. Prepartum feed intake tended to be lower for SoyChlor than for the control, but postpartum intake did not differ among dietary treatment groups. Likewise, no significant differences were detected for milk yield between treatments. Protein percentage, milk urea nitrogen, and lactose percentage were greatest for …
Luteolysis And Pregnancy Outcomes In Dairy Cows After Treatment With Estrumate Or Lutalyse (2009), Jeffrey S. Stevenson
Luteolysis And Pregnancy Outcomes In Dairy Cows After Treatment With Estrumate Or Lutalyse (2009), Jeffrey S. Stevenson
Kansas Agricultural Experiment Station Research Reports
In Experiment 1, lactating dairy cows (n = 1,230) in 6 herds were treated with 2 injections of prostaglandin F2α(PGF2α) 14 days apart (Presynch), with the second injection administered 12 to 14 days before the onset of a timed AI protocol (Ovsynch). Cows were inseminated when detected in estrus after the Presynch PGF2αinjections. Cows not inseminated were enrolled in the Ovsynch protocol and were assigned randomly to be treated with either Estrumate or Lutalyse as part of a timed artificial insemination (AI) protocol. Blood samples were collected before treatment injection (0 hour) and 48 and 72 hours later. In cows …