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Full-Text Articles in Life Sciences

Using Estrus-Detection Patches To Vary Time Of Insemination Improves Pregnancy Rates Compared With One Single Timed Insemination, S. L. Hill, D. M. Grieger, K C. Olson, J. R. Jaeger, J. S. Stevenson Jan 2015

Using Estrus-Detection Patches To Vary Time Of Insemination Improves Pregnancy Rates Compared With One Single Timed Insemination, S. L. Hill, D. M. Grieger, K C. Olson, J. R. Jaeger, J. S. Stevenson

Kansas Agricultural Experiment Station Research Reports

Timed artificial insemination (TAI) of beef cows at a predetermined time is a management tool that reduces labor costs associated with conventional heat detection before insemination. Multiple research trials have examined timing of the individual components of the developed protocols associated with TAI. The 7-day CO-Synch + progesterone insert (controlled internal drug release; CIDR) protocol has been shown to initiate ovulation effectively in cycling and noncycling suckled beef cows, often producing pregnancy rates greater than 50% in beef cows. In the current research, we examined using two targeted insemination intervals depending on the occurrence of estrus. We hypothesized that by …


Menthol Supplementation Has Minimal Effects On Blood Components From Holstein Steers, C. L. Van Bibber, K. A. Miller, C. C. Aperce, C. Alvarado, J. J. Higgins, J. S. Drouillard Jan 2015

Menthol Supplementation Has Minimal Effects On Blood Components From Holstein Steers, C. L. Van Bibber, K. A. Miller, C. C. Aperce, C. Alvarado, J. J. Higgins, J. S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Menthol is a naturally occurring compound classified as an essential oil that gives plants of theMenthaspecies their characteristic minty aroma and flavor. Menthol is used as a cooling compound in products ranging from common cold medications to pesticides and has been found to have a wide range of biological activities in different systems within the body. More recently, menthol and other essential oils have been identified as potential alternatives to feed antibiotics and growth promotants. Menthol has been observed to directly affect κ-opioid receptors. Kappa opioid receptors are located in the central nervous system, with a high density …


Supplemental Zinc Oxide Does Not Interact With Zilmax In Feedlot Steers, C. L. Van Bibber, K. A. Miller, J. M. Gonzalez, J. S. Drouillard Jan 2015

Supplemental Zinc Oxide Does Not Interact With Zilmax In Feedlot Steers, C. L. Van Bibber, K. A. Miller, J. M. Gonzalez, J. S. Drouillard

Kansas Agricultural Experiment Station Research Reports

Zilmax (Merck Animal Health; Summit, NJ) is in a class of feed additives known as beta agonists and is designed to improve production efficiency in cattle when fed 20 days prior to harvest. Zilmax works by altering deposition of body tissue to more lean muscle than fat. Zinc is an essential mineral necessary for normal growth and development of all mammals. Zinc functions largely in enzymes involved in protein synthesis and carbohydrate metabolism along with many other biological reactions. The purpose of this study was to assess changes in blood components and to evaluate the interactive effects of zinc and …


Effects Of Seed Treatment On Sudden Death Syndrome Symptoms And Soybean Yield, E. A. Adee Jan 2015

Effects Of Seed Treatment On Sudden Death Syndrome Symptoms And Soybean Yield, E. A. Adee

Kansas Agricultural Experiment Station Research Reports

Sudden death syndrome (SDS) is a soybean disease that perennially limits yields in the Kansas River Valley. The presence of soybean cyst nematode (SCN) and saturated soils have been implicated in contributing to the severity of the disease. Selecting varieties with some degree of tolerance to SDS is the only cultural practice that can potentially reduce the severity of SDS and improve yields. Variety selection alone, however, cannot improve the production of soybeans to make them profitable. The challenge of trying to manage irrigation scheduling to avoid saturated soils further complicates efforts to increase productivity with irrigation while still avoiding …


Seeding Date Effects On Camelina Seed Yield And Quality Traits, E. Obeng, A. Obour Jan 2015

Seeding Date Effects On Camelina Seed Yield And Quality Traits, E. Obeng, A. Obour

Kansas Agricultural Experiment Station Research Reports

Identifying crops that are adapted to dryland environments of the central and northern Great Plains (GP) has been a major challenge. An alternative crop with potential for dryland crop production in the GP is camelina (Camelina sativaL. Crantz). Time of planting is an important management consideration that can affect camelina production. Early planting allows camelina to mature before the onset of hot summer temperatures in the central GP that can affect seed yield. A study was carried out in the spring of 2013 and 2014 to evaluate planting date effects on spring camelina varieties grown under dryland conditions …


Breaking Soybean Yield Barriers: A Cropping Systems Approach, G. R. Balboa, I. A. Ciampitti Jan 2015

Breaking Soybean Yield Barriers: A Cropping Systems Approach, G. R. Balboa, I. A. Ciampitti

Kansas Agricultural Experiment Station Research Reports

Two soybean research trials were conducted at Scandia, KS, in dryland and irrigated environments. The objective of this trial was to study the contribution of different farming systems to developing efficient and high-yielding soybean production systems. Each experiment had five treatments: farmer practices (FP), comprehensive fertilization (CF), production intensity (PI), ecological intensification (CF + PI), and advanced plus (AD). Under dryland, FP and CF treatments yielded 34 bu/a, differing in 27 bu/a compared with PI, EI, and AD scenarios. Under irrigation, FP and CF presented comparable yield levels, differing by close to 36 bu/a compared with crop intensification treatments (CF …