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Full-Text Articles in Large or Food Animal and Equine Medicine

Methane Mitigation And Its Effects On Energy Utilization In Lactating Dairy Cattle, Shan C. Sherwood May 2025

Methane Mitigation And Its Effects On Energy Utilization In Lactating Dairy Cattle, Shan C. Sherwood

Department of Animal Science: Dissertations, Theses, and Student Research

Improved methane (CH4) mitigation strategies are needed to achieve the greenhouse gas emission goals of the dairy industry. The first experiment was conducted to evaluate the effects of feeding black cumin (Nigella sativa) seed oil and acetate (BCA) on CH4 production and whole-animal energy utilization. Twelve dry Jersey cows were used in a 2-period crossover design study with 28d periods. The BCA treatment was compared to a control diet with corn oil. Both BCA and corn oil were added to the base diet as a top dress. Results from this study did not show any …


The Benefits Of Dexmedetomidine For Pain Mitigation After Cautery Disbudding In Calves, Tsung-Ching Liu, Chen-Fei Chiang, Thomas Chia-Tang Ho, Jacky Peng-Wen Chan Aug 2024

The Benefits Of Dexmedetomidine For Pain Mitigation After Cautery Disbudding In Calves, Tsung-Ching Liu, Chen-Fei Chiang, Thomas Chia-Tang Ho, Jacky Peng-Wen Chan

The Thai Journal of Veterinary Medicine

The purpose of this study was to determine the effect of dexmedetomidine (DEX) alone on pain mitigation following cautery disbudding in calves. A total of 21 calves were randomly divided into three groups: sham-disbudded control with placebo (S, n = 8); hot-iron disbudded after placebo (D, n = 6); hot-iron disbudded after 0.01 mg/kg of DEX (DeD, n = 7). The pain-related responses measured included serum cortisol levels, struggling scores, pain-related behaviors and other physiological values. The results indicated that the struggling scores, the cortisol concentrations from +10 to +60 min after disbudding and the area under curve of cortisol …


Rumen-Protected Methionine Supplementation Improves Lactation, Oxidative Status, And Immune Response During A Subclinical Mastitis Challenge In Lactating Dairy Cows., Anita Paz Lopez Jan 2023

Rumen-Protected Methionine Supplementation Improves Lactation, Oxidative Status, And Immune Response During A Subclinical Mastitis Challenge In Lactating Dairy Cows., Anita Paz Lopez

Electronic Theses and Dissertations

Mastitis is a significant problem in the dairy industry, posing numerous challenges for dairy farmers worldwide. Mastitis refers to the inflammation of the mammary gland, primarily caused by bacterial infections. This condition affects the health and well-being of dairy cows and has severe economic implications for farmers and overall dairy production. The prevalence of mastitis substantially threatens milk quality, productivity, and profitability, making it a top concern in the dairy industry. Preventing mastitis in cows is crucial for maintaining the herd's health and ensuring highquality milk production. Nutritional strategies have recently gained greater attention due to a direct impact on …


Environmental Sampling Techniques For Herd-Level Surveillance Of Bovine Viral Diarrhea Virus, Jaden Carlson Aug 2019

Environmental Sampling Techniques For Herd-Level Surveillance Of Bovine Viral Diarrhea Virus, Jaden Carlson

School of Veterinary and Biomedical Sciences: Dissertations, Theses, and Student Research

Control of Bovine Viral Diarrhea Virus (BVDV) relies on resource-intensive individual animal sampling to detect and remove persistently infected (PI) cattle. Herd-level surveillance tools would be useful for herds with unknown BVDV status and for monitoring herds with BVDV-free status. The overall objective of this thesis is to explore the viability of BVDV surveillance at a herd-level using samples collected without handling individual animals. The first objective was to determine the feasibility of using stable flies as a sampling tool to detect BVDV. The second objective was to determine the feasibility of using drinking water to detect BVDV. To accomplish …


The Effect Of Bovine Galectin-1, A Conceptus Secretory Protein, On The Endometrial Transcriptome, Lindsay Faye Grose Jan 2019

The Effect Of Bovine Galectin-1, A Conceptus Secretory Protein, On The Endometrial Transcriptome, Lindsay Faye Grose

Graduate Theses, Dissertations, and Problem Reports (ETD)

Early embryonic loss in cattle is detrimental to reproduction thus, the profitability of both the beef and dairy industries. Therefore, an important aspect of study is to find techniques that beef or dairy producers could use to decrease early embryonic loss Galectin-1, the protein that was investigated in this research is important in modulating the maternal immune system in rodent and human early pregnancies by promoting fetomaternal immune tolerance. The role of galectin-1 within the reproductive tissues has not been thoroughly investigated in cattle. Galectin-1 is located in the caruncular and intercaruncular regions of the bovine endometrium, specifically the maternal …


Symptoms And Causes Of Foamy Bloat In Cattle, Zachary Christman Oct 2017

Symptoms And Causes Of Foamy Bloat In Cattle, Zachary Christman

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

The bovine stomach normally produces gases such as ammonia, carbon dioxide and methane. However when these gases become trapped in the bovine stomach because of a thick, frothy or foamy liquid it is called bloat. Cattle bloat is a very old condition and goes by many names but is primarily trapped gas within the bovine stomach. Readily digested feedstuff such as highly processed grain diets or an overabundance of fresh immature alfalfa often leads to a vast amount of small particles and carbohydrates in the rumen; this is the major cause of foamy bloat. Severe bloat causes death by suffocation …


Efficiency Of Energy Utilization And Fecal Mineral Excretion In Holstein And Jersey Dairy Cows, Gabriel Garcia Gomez Dec 2015

Efficiency Of Energy Utilization And Fecal Mineral Excretion In Holstein And Jersey Dairy Cows, Gabriel Garcia Gomez

Department of Animal Science: Dissertations, Theses, and Student Research

Eight multiparous Holstein and 8 Jersey dairy cows were used to complete energy balance trials designed to determine the effect of breed on the production and energy efficiency of milk, and energy partitioning. A repeated switchback design was used to compare the effect of cow breed. Diets consisted of 24.5% corn silage, 18.4% alfalfa hay, 6.9% grass hay, with either 22.9% rolled corn and 14.8% soybean meal (CON) or 8.95% rolled corn and 28.8% reduced fat distillers grains (RFDDGS) DM-basis. Diets were offered ad libitum for a 28 d adaptation period and 95% ad libitum for a 4 d collection …


Using Progesterone As An Indicator Of Ovarian Response To Stimulation In Cattle, Kayla Mariah Kauffman Mar 2014

Using Progesterone As An Indicator Of Ovarian Response To Stimulation In Cattle, Kayla Mariah Kauffman

Animal Science

No abstract provided.


Nebraska Bqa: Antibiotic Use Guidelines, Rob Eirich Jan 2014

Nebraska Bqa: Antibiotic Use Guidelines, Rob Eirich

Nebraska Beef Quality Assurance Program

Cattlemen have demonstrated a commitment to animal health through vaccination programs developed carefully in cooperation with their veterinarian. When animals must be treated with an antibiotic after disease diagnosis, producers need to follow important antibiotic use guidelines established through the National Beef Quality Assurance (BQA) program.


Nebraska Bqa: Effective Cattle Handling, Rob Eirich Jan 2014

Nebraska Bqa: Effective Cattle Handling, Rob Eirich

Nebraska Beef Quality Assurance Program

Cattlemen know the importance of proper cattle handling and its effect on animal health and performance. Beef Quality Assurance has been implementing effective cattle handling (low-stress) into educational programs since its establishment in the 1980s.


Nebraska Bqa: Handling Compromised Animals, Rob Eirich Jan 2014

Nebraska Bqa: Handling Compromised Animals, Rob Eirich

Nebraska Beef Quality Assurance Program

Cattle producers have long recognized the need of proper husbandry and stewardship for the animals entrusted into their care. Best livestock production practices, based on research and sound science, help ensure the well-being, animal health and productivity of cattle.


Calf Branding/Processing Time And Beef Quality Assurance, Rob Eirich Jan 2014

Calf Branding/Processing Time And Beef Quality Assurance, Rob Eirich

Nebraska Beef Quality Assurance Program

It is spring and that means branding time across cattle country. As producers are finishing calving season and preparing for branding/processing, it is important to review Beef Quality Assurance (BQA) guidelines. Let's take a minute to look at the key BQA principles:


Audits And Assessments In Beef Cattle Production, Rob Eirich Jan 2014

Audits And Assessments In Beef Cattle Production, Rob Eirich

Nebraska Beef Quality Assurance Program

Assessments and audits are becoming a part of doing business in beef cattle production, as we are seeing beef processors implementing third-party audits. Since beginning as the Nebraska Director of Beef Quality Assurance (BQA) in July, I have been studying and gathering information on the National Cattlemen's Beef Association (NCBA) Assessment Guides and third-party audits in the beef industry.


Nebraska Beef Quality Assurance: Focused On The Safety, Wholesomeness And Quality Of Beef Jan 2014

Nebraska Beef Quality Assurance: Focused On The Safety, Wholesomeness And Quality Of Beef

Nebraska Beef Quality Assurance Program

Across the nation, beef producers face the challenge of making a living from the land, while producing safe, wholesome beef. Beef that will provide a great eating experience each and every time for American and International consumers.


Handling Cattle Through High Heat Humidity Indexes, Rob Eirich Jan 2014

Handling Cattle Through High Heat Humidity Indexes, Rob Eirich

Nebraska Beef Quality Assurance Program

As cattlemen enter the summer months, they need to understand and deal with heat and humidity. Consider incorporating the following practices into management plans to help reduce additional stress.


Nebraska Bqa: Herd Health Plan/Protocol, Rob Eirich Jan 2013

Nebraska Bqa: Herd Health Plan/Protocol, Rob Eirich

Nebraska Beef Quality Assurance Program

Nebraska cattlemen have demonstrated a commitment to the integrity of today's beef products by implementing sound cattle management practices. Consumers are looking for beef raised in a healthy and safe environment. An appropriate Herd Health Plan/Protocol ensures that all cattle are raised in the best health.


Nebraska Bqa: Veterinarian Client Patient Relationship, Rob Eirich Jan 2013

Nebraska Bqa: Veterinarian Client Patient Relationship, Rob Eirich

Nebraska Beef Quality Assurance Program

Beef producers are committed producing a high quality, safe and wholesome beef product. A commitment to herd health and veterinary input is critical to achieving this goal. To this end, developing a veterinarian client-patient relationship (VCPR) is important and will benefit all aspects of cattle performance. Veterinarians' working understanding of cattle disease and parasites can help cattle raisers develop targeted vaccination and treatment programs.


Caring For Compromised Cattle: Assessing Animals At Risk Jan 2011

Caring For Compromised Cattle: Assessing Animals At Risk

Nebraska Beef Quality Assurance Program

Cattlemen have long recognized the need to properly care for their livestock. Sound animal husbandry practices – based on research and decades of practical experience – are known to impact the well-being of cattle, individual animal health and herd productivity. There is no doubt that producers work hard to ensure that their cattle are properly cared for throughout all stages of production. Unfortunately, it’s a fact of raising cattle that some animals will become injured to the extent that they are unable to stand or walk without assistance.


Assessor’S Guide To A Beef Quality Assurance Cow-Calf Assessment Jan 2011

Assessor’S Guide To A Beef Quality Assurance Cow-Calf Assessment

Nebraska Beef Quality Assurance Program

The BQA Cow-Calf Assessment is an on-site educational tool that allows for assessing and benchmarking key indicators of animal care and well-being as well as operational conditions. The Cow-Calf Assessment focuses on three main areas – Animals, Records and Best Management Practices (BMP), and Facilities and Equipment.


Dairy Animal Care: Quality Assurance Jan 2010

Dairy Animal Care: Quality Assurance

Nebraska Beef Quality Assurance Program

Dairy producers are encouraged to participate in the voluntary Dairy Animal Care and Quality Assurance (DACQA) Certification program. The purpose of this program is to enhance and demonstrate quality animal care practices, which assure food safety, quality and value as well as enhance consumer confidence in the milk and beef products that are harvested from cattle on America’s dairy farms.


Feedyard Assessment: Assessor's Guide Jan 2009

Feedyard Assessment: Assessor's Guide

Nebraska Beef Quality Assurance Program

The BQA Feedyard Assessment is an on-site educational tool that allows for assessing and benchmarking key indicators of animal care and well-being as well as feedyard conditions. The Feedyard Assessment focuses on three main areas – Animals, Records and Best Management Practices (BMP), and Facilities and Equipment.


Stocker And Backgrounding Self Assessment Jan 2009

Stocker And Backgrounding Self Assessment

Nebraska Beef Quality Assurance Program

Cattlemen in stocker operations have long recognized the need to properly care for livestock. Sound animal husbandry practices, based on decades of practical experience and research, are known to impact the well-being of stocker cattle, individual animal health and herd productivity. Stocker cattle operations are located in many diverse environments and geographic locations in the United States. A universal set of production practices can not be recommended for all stocker cattle producers in light of the divergent climate and geographic variations of the stocker and backgrounding segment. Personal experience, training and professional judgment can serve as a valuable resource for …


Got Controversy - Milk Does, Margaret Sova Mccabe Oct 2008

Got Controversy - Milk Does, Margaret Sova Mccabe

Law Faculty Scholarship

This article analyzes ongoing controversy over how to best label rBST-free milk. Recombinant bovine somatotropin is a genetically engineered drug administered by some farmers to their dairy herds to increase milk production. FDA first approved its use in 1994, despite great controversy. The FDA also issued labeling guidelines that allowed voluntary disclosure of rBST-free milk, so long as it carried the disclaimer that no difference could be detected between milk produced with rBST and rBST-free. The controversy continues today as consumers express a preference for rBST-free milk and many rBST-free producers label their milk this way. "Conventional" milk (with rBST) …


The Cattle Industry's Guidelines For The Care And Handling Of Cattle Jan 2006

The Cattle Industry's Guidelines For The Care And Handling Of Cattle

Nebraska Beef Quality Assurance Program

Cattlemen have long recognized the need to properly care for livestock. Sound animal husbandry practices, based on decades of practical experience and research, are known to impact the wellbeing of cattle, individual animal health and herd productivity. Cattle are produced in very diverse environments and geographic locations in the United States. There is not one specific set of production practices that can be recommended for all cattle producers. Personal experience, training and professional judgment can serve as a valuable resource for providing proper animal care.


The Incidence Of Cryptosporidial Infections In Nebraska Dairy Calves, Douglas Lee Varner Jul 1986

The Incidence Of Cryptosporidial Infections In Nebraska Dairy Calves, Douglas Lee Varner

School of Veterinary and Biomedical Sciences: Dissertations, Theses, and Student Research

Within the last decade a new etiologic agent has been identified as a possible cause of diarrhea in humans and domestic animals—that being the protozoan parasite Cryptosporidium. The purpose of this study was to determine the incidence and distribution of Cryptosporidium in the state of Nebraska, to determine if Cryptosporidium occurs more frequently in association with other enteropathogens and to determine about the relation of scouring in the calves to infection with Cryptosporidium. A total of 620 fecal samples from 334 dairy calves from 71 herds in Nebraska were examined for cyptosporidial oocysts using the Sheather’s sugar flotation …


Calf Diarrhea (Scours): Reproduced With A Virus From A Field Outbreak, C. A. Mebus, N. R. Underdahl, M. B. Rhodes, M. J. Twiehaus Mar 1969

Calf Diarrhea (Scours): Reproduced With A Virus From A Field Outbreak, C. A. Mebus, N. R. Underdahl, M. B. Rhodes, M. J. Twiehaus

Nebraska Agricultural Experiment Station: Historical Research Bulletins

Neonatal calf diarrhea typical of that seen in field cases was produced in colostrum-deprived calves by inoculating either feces or bacteria-free filtrates via the duodenum, orally, or by a spray (aerosol). Three calves, kept free of E. coli, developed severe diarrhea following inoculation with a bacteria-free filtrate. Intense fluorescence in the epithelium of sections of small intestine from two experimental calves was observed following staining with ftuorescein-labeled gamma globulin produced with viral antigen prepared from the feces of two experimental diarrhetic E. coli-free calves. Fluorescing cells were also present in the feces of experimental and field cases of neonatal …


Feeding And Care Of Calves, R. R. Thalman Aug 1938

Feeding And Care Of Calves, R. R. Thalman

Nebraska Agricultural Experiment Station: Historical Circulars

It is not infrequent that considerable difficulty is encountered in raising calves with limited amounts of milk or none at all. Requests for information on calf gruels, mixed grain feeds, and commercial supplements are frequent enough to make a short circular upon this subject seem desirable. Furthermore, as the more diversified agricultural program gets under way these requests are increasmg.


White Scours Of Calves, L. Van Es May 1933

White Scours Of Calves, L. Van Es

Nebraska Agricultural Experiment Station: Historical Circulars

It becomes possible to understand some of the reasons for the occurrence of disorders among the newborn of animals kept under the usual conditions imposed by domestication. Among these, the subject of this circular, White Scours in Calves, occupies a prominent place.