A nine-year-old Holstein cow that developed recurrent ruminal tympany and an abnormal forelimb gait and posture ultimately became recumbent and unable to rise, and was euthanased. A postmortem examination demonstrated numerous schwannomas affecting peripheral nerves and several thoracic and abdominal viscera.
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http://dx.doi.org/10.1136/vr.140.19.504 | DOI Listing |
Vet Pathol
July 2024
Instituto Nacional de Investigación Agropecuaria, Estación Experimental La Estanzuela, Uruguay.
In the summer of 2023, ingestion of (pollen beetle) was linked to spontaneous fatal disease in grazing cattle and sheep in Argentina and Uruguay. While the disease was experimentally reproduced in sheep and guinea pigs in the 1970's, no experimental reproductions have been attempted in cattle, and controversy exists as to whether this insect is indeed noxious to cattle and at which dose. Here, we demonstrate that causes acute fatal disease in Hereford calves at single oral dosages of 2.
View Article and Find Full Text PDFToxicon
February 2024
Postgraduate Program in Animal Science in the Tropics, Federal University of Bahia, Salvador, Bahia, CEP: 40170-110, Brazil. Electronic address:
Nine outbreaks of cecal dilatation are reported in cattle in rotationally-grazed pastures of Megathyrsus maximus during the rainy season with one day grazing and rest intervals of 23-28 days. Clinical signs, observed 6-24 h after entering the pasture, were inappetence, long periods in sternal recumbency, rough hair coat, arched back, tenesmus with difficult defecation, dry stools, reduced ruminal movements, intestinal tympany with right abdominal distention, and decreased milk production. The animals recovered 8-12 h after their removal from the pastures.
View Article and Find Full Text PDFAnimal
December 2023
Department of Agriculture, Veterinary, & Rangeland Sciences, University of Nevada, Reno, NV 89557, United States; College of Agriculture, Biotechnology & Natural Resources, University of Nevada, Reno, NV 89557, United States. Electronic address:
Ruminal tympany (bloat) has long been an issue for large and small livestock operations. Though improvements in feedlot management practices have reduced its occurrence, it is still highly prevalent and is known to detrimentally affect animal performance, welfare, and in many instances, lead to animal death. Current decision support systems and diet formulation software omit the inclusion of bloat prediction based on animal performance.
View Article and Find Full Text PDFVet Sci
March 2023
Instituto de Medicina Veterinária, Universidade Federal do Pará, Castanhal 68740-970, PA, Brazil.
This study aims to describe the clinical signs and ultrasonographic and necropsy findings of the first cases of proximal (Buffalo 1) and distal (Buffalo 2) vagal indigestion in two in the Brazilian Amazon biome. The clinical histories of the buffaloes were characterized by progressive weight loss, recurrent tympany, abdominal distention (apple and pear shapes), anorexia, and scant feces. Buffalo 1 was submitted to orogastric intubation, and due to the recurrent tympany, an exploratory laparotomy.
View Article and Find Full Text PDFOpen Vet J
January 2023
Department of Veterinary Clinical Sciences, Jordan University of Science and Technology, Irbid, Jordan.
Background: Pre-weaning dairy calf and replacement heifer mortality represents significant economic loss, limits genetic improvement and growth of the herd, and indicates poor management and animal welfare status on the farm.
Aim: Currently, the rates and causes of the dairy calf and replacement heifer mortality in Jordan are not known. Therefore, the objective of this study was to determine the incidence rates and causes of mortality of pre-weaning calves and replacement heifers in Jordan.
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