A5082433281- Milk Quality and Mastitis in Dairy Cows
- Animal Behavior and Welfare Studies
- Microbial infections and disease research
- Microbial Inactivation Methods
- Probiotics and Fermented Foods
- Listeria monocytogenes in Food Safety
- Digestive system and related health
- Genetic and phenotypic traits in livestock
- Viral gastroenteritis research and epidemiology
- Food Safety and Hygiene
- Infant Nutrition and Health
- Neonatal Health and Biochemistry
- Ginseng Biological Effects and Applications
- Neutropenia and Cancer Infections
- Effects of Environmental Stressors on Livestock
- Fungal Infections and Studies
- Thyroid Disorders and Treatments
- Clinical Laboratory Practices and Quality Control
- Animal Disease Management and Epidemiology
- Infectious Diseases and Mycology
- Animal Genetics and Reproduction
- Sepsis Diagnosis and Treatment
- Aquaculture disease management and microbiota
- Mycobacterium research and diagnosis
- Animal Diversity and Health Studies
Cornell University
2008-2025
New York State College of Veterinary Medicine
2011-2023
SUNY Cobleskill
2021
<title>Abstract</title> We investigated the impact of influenza A-H5N1 virus infection in a dairy herd. Clinical disease, which lasted for about three weeks, was recorded 20.0% (777/3,876) adult cows. Milk losses ~900 kg per cow were affected cows during 60 day-post-outbreak period. Seroprevalence 89.4% (570/637) herd, with 76.1% (485/637) seropositive animals being subclinically infected. Clinically presented an increased risk death (6 times) and premature herd removal (3.6 times), when...
ABSTRACT The objective of this study was to evaluate whether cows that were low shedders Mycobacterium avium subsp. paratuberculosis passively shedding or truly infected with M. . We also investigated it is possible these -infected animals could have been as adults by contemporary high-shedding (supershedders). isolates obtained from a longitudinal three dairy herds in the northeastern United States. Isolates selected fecal samples and tissues at slaughter all culture positive same time...
A longitudinal study aimed to detect Listeria monocytogenes on a New York State dairy farm was conducted between February 2004 and July 2007. Fecal samples were collected every 6 months from all lactating cows. Approximately 20 environmental obtained 3 months. Bulk tank milk in-line filter weekly. Samples milking equipment the parlor environment in May Fifty-one of 715 fecal (7.1%) 22 303 (7.3%) positive for L. monocytogenes. total 73 108 (67.6%) 34 172 bulk (19.7%) isolated 40 (15%)...
ABSTRACT Dairy farms are a reservoir for Listeria monocytogenes , and the reduction of this pathogen at farm level is important reducing human exposure. The objectives research were to study diversity L. strains on single dairy farm, assess strain dynamics within identify potential sources in bulk tank milk filters, adherence abilities representative strains. A total 248 isolates analyzed by pulsed-field gel electrophoresis (PFGE). Combined AscI ApaI restriction analysis yielded 40 PFGE...
The purpose was to evaluate 2 intramammary treatments for mild-to-moderate cases of clinical mastitis in a noninferiority comparison. Noninferiority trials are intended show whether given treatment, hetacillin potassium, has at least comparable efficacy as the reference ceftiofur hydrochloride. Treatments can be deemed inferior treatment by an amount less than margin noninferiority, or inconclusive if confidence interval crosses noninferiority. Cows with from 6 farms were considered...
Determining the species of mycoplasma isolated from culture-positive milk samples is important for understanding clinical significance their detection. Between August 2016 and December 2019, 214,518 2,757 dairy herds were submitted to Quality Milk Production Services (QMPS) at Cornell University culture. From these samples, 3,728 collected 204 culture positive. Based on request herd managers, owners, or veterinarians, 889 isolates 98 subjected molecular identification by PCR amplicon...
Majority of iodine found in dairy milk comes from the diet and teat disinfection products used during milking process. The objective this study was to evaluate effects 4 iodine-based dips on iodide concentrations varying level (0.25% vs. 0.5%, w/w), normal low viscosity dip versus barrier dip, application method (dip spray) ensure safe levels when these are used. exposure performed a 2-wk period. trial farm purged all for 21 d prestudy "washout period," which resulted baseline range 145 182...
The objectives were to examine the effect of an automated premilking stimulation (APS) by means a high pulsation frequency (300 cycles/min) without reduction vacuum in chamber or claw piece on (1) milking performance, (2) teat tissue condition, and (3) udder health dairy cows. In randomized controlled field study, Holstein cows (n = 427) from 1 commercial farm with schedule 3 times per day assigned treatment control groups over 90-d period. Treatments consisted maximum 80 s (APS80) 99...
Environmental mastitis represents a major challenge on dairy farms where contagious pathogens are controlled by improved milking procedures. Therefore, research focused the environment is important to improve udder health programs. The objectives of this prospective and descriptive study were (1) describe bedding bacterial counts, pH, dry matter (DM) five different types (organic: manure solids, straw, paper fiber; inorganic: sand, recycled sand) (2) explore association between counts with...
Trichosporon beigelii is widely distributed in nature and classically associated with white piedra, a mycosis that may involve the hair of human body. Intramammary infections caused by T be fatal cows; prevalence affected dairy herds high. Affected cows have hyperthermia, swelling udder, substantially decreased milk production or agalactia. yeast, including beigelii, also high bacterial counts bulk-tank milk.
So far evaluation of training initiatives for dairy farm employees has been limited to the reaction and learning level. Effect on employee's behavior not studied yet. The objective this study was determine effectiveness online change employee toward best practice routines. An interactive course related udder health developed in 5 modules Spanish English: 1) Collecting an aseptic milk sample, 2) Administering intramammary treatment, 3) Deciding saleable milk, 4) Treating a cow at dry off with...
No new antimicrobials have been approved for the treatment of mastitis since 2006; it would be beneficial to perform controlled field trials comparing 2 existing treatments. Non-inferiority are valuable in this regard, as they do not require a negative control randomized, FDA drug trial. If therapy with similar efficacy is available, decision making criteria can include convenience, lower costs, less side effects, improved delivery systems, and better integration into current protocols. The...
Serratia species are gram-negative bacilli commonly found in soil and water. They have been associated with disease humans, companion animals, dairy cattle. In cattle, infections originated the dry or lactation period both small large herds. The infection can result clinical subclinical mastitis. Clinical cases occasionally cause severe symptoms such as hard, hot quarters systemic signs of illness death; however, more common. Individual reported to last long 10 months. Although some reports...