J.A. Hertl mainly focuses on Mastitis, Animal science, Veterinary medicine, Lactation and Herd. His Mastitis study frequently links to other fields, such as Biotechnology. Dairy cattle is the focus of his Animal science research.
Specifically, his work in Lactation is concerned with the study of Ice calving. He usually deals with Ice calving and limits it to topics linked to Gynecology and Odds ratio, Estrous cycle, Postpartum period, Luteal phase and Risk factor. His Milk fever research is multidisciplinary, incorporating elements of Milking and Culling.
His main research concerns Mastitis, Animal science, Herd, Veterinary medicine and Lactation. J.A. Hertl has researched Mastitis in several fields, including Dairy cattle, Culling and Biotechnology. The various areas that J.A. Hertl examines in his Animal science study include Ice calving and Insemination.
His study in Herd is interdisciplinary in nature, drawing from both Statistics and Incidence. His research integrates issues of Pathogen and Confidence interval in his study of Veterinary medicine. The study incorporates disciplines such as Virus, Viral Vaccine, Infectious bovine rhinotracheitis virus and Immunology in addition to Lactation.
Mastitis, Veterinary medicine, Herd, Trueperella pyogenes and Lactation are his primary areas of study. His Mastitis research includes themes of Culling and Ice calving. His research in Culling focuses on subjects like Risk of mortality, which are connected to Insemination.
J.A. Hertl has included themes like Parity and Animal science in his Ice calving study. J.A. Hertl works mostly in the field of Veterinary medicine, limiting it down to topics relating to Pathogen and, in certain cases, Milk yield and Treatment efficacy, as a part of the same area of interest. His Herd research is multidisciplinary, relying on both Statistics, Biotechnology and Incidence.
J.A. Hertl mainly investigates Veterinary medicine, Trueperella pyogenes, Mastitis, Retained placenta and Metritis. His Mastitis research incorporates elements of Milk fever and Confidence interval. His Milk fever study is concerned with Lactation in general.
J.A. Hertl interconnects Culling, Risk of mortality, Parity and Animal science in the investigation of issues within Confidence interval. His Animal science study frequently draws connections between related disciplines such as Ice calving. J.A. Hertl incorporates Retained placenta and Corynebacterium bovis in his studies.
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Risk factors for post partum ovarian dysfunction in high producing dairy cows in Belgium: a field study.
G. Opsomer;Y.T. Gröhn;J. Hertl;M. Coryn.
Effect of Pathogen-Specific Clinical Mastitis on Milk Yield in Dairy Cows
Y. T. Grohn;David J. Wilson;R. N. Gonzalez;J. A. Hertl.
Journal of Dairy Science (2004)
Effect of Diseases on the Culling of Holstein Dairy Cows in New York State
Y.T. Gröhn;S.W. Eicker;V. Ducrocq;J.A. Hertl.
Journal of Dairy Science (1998)
The cost of different types of lameness in dairy cows calculated by dynamic programming.
E. Cha;J.A. Hertl;D. Bar;Y.T. Gröhn.
Preventive Veterinary Medicine (2010)
The Cost of Generic Clinical Mastitis in Dairy Cows as Estimated by Using Dynamic Programming
D. Bar;L.W. Tauer;G. Bennett;R.N. González.
Journal of Dairy Science (2008)
The Association Between Previous 305-day Milk Yield and Disease in New York State Dairy Cows
Y.T. Gröhn;S.W. Eicker;J.A. Hertl.
Journal of Dairy Science (1995)
Effect of Clinical Mastitis on the Lactation Curve: A Mixed Model Estimation Using Daily Milk Weights
D.J. Wilson;R.N. González;J. Hertl;H.F. Schulte.
Journal of Dairy Science (2004)
The cost and management of different types of clinical mastitis in dairy cows estimated by dynamic programming
E. Cha;D. Bar;J.A. Hertl;L.W. Tauer.
Journal of Dairy Science (2011)
Effects of clinical mastitis caused by gram-positive and gram-negative bacteria and other organisms on the probability of conception in New York State Holstein dairy cows.
J.A. Hertl;Y.T. Gröhn;J.D. G. Leach;D. Bar.
Journal of Dairy Science (2010)
Optimizing replacement of dairy cows: modeling the effects of diseases.
Y.T Gröhn;P.J Rajala-Schultz;H.G Allore;M.A DeLorenzo.
Preventive Veterinary Medicine (2003)
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