This article reviews the basics of gastrointestinal nematode biology and pathophysiology in cattle and describes how gastrointestinal nematode epidemiology is driven by environmental, host, and farm economic determinants. Adverse effects from gastrointestinal nematodes on their hosts are caused by tissue damage, nutrient absorption, immunopathologic effects, and reduced food intake induced by hormonal changes. Weather and microenvironmental factors influence the development and survival of free-living parasitic stages. A holistic control approach entails the consideration of environmental, immunologic, and socioeconomic aspects of nematode epidemiology and is key for the development and communication of sustainable control strategies.
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http://dx.doi.org/10.1016/j.cvfa.2019.11.001 | DOI Listing |
Transl Anim Sci
December 2024
Cooperative Research, College of Agriculture, Environmental and Human Sciences, Lincoln University of Missouri, Jefferson City, MO 65102, USA.
Gastrointestinal nematode (GIN) infection adversely affects the performance and well-being of forage-based sheep throughout the world. The study objectives were to estimate longitudinal differences between birth seasons and production systems for lamb postweaning growth and indicators of GIN infection. Data were collected on Katahdin lambs within a single flock from 2006 to 2022.
View Article and Find Full Text PDFInt J Parasitol
December 2024
Sydney School of Veterinary Science, Faculty of Science, University of Sydney, Sydney, New South Wales, Australia; Sydney Institute for Infectious Diseases, The University of Sydney, New South Wales, Australia. Electronic address:
Canine hookworm (Ancylostoma caninum), a gastrointestinal nematode of domestic dogs, principally infects the small intestine of dogs and has the potential to cause zoonotic disease. In greyhounds and pet dogs in the USA, A. caninum has been shown to be resistant to multiple anthelmintics.
View Article and Find Full Text PDFMicrosc Res Tech
December 2024
Laboratory of Entomology, Institute of Zoology of the Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan.
Ascariasis, caused by the parasitic roundworm Ascaris lumbricoides, is a major public health issue, especially in developing nations such as Pakistan. It impacts millions, causing significant morbidity through starvation, stunted growth in children, and a variety of gastrointestinal issues. The taxonomy of the Ascaris genus, notably the distinction between A.
View Article and Find Full Text PDFBMC Vet Res
December 2024
College of Life Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia, China.
Background: Different areas of sheep infected with different types of parasites, all will cause serious harm to the local sheep, and the widespread use and repeated use of anthelmintics have produced different degrees of anthelmintic resistance (AR) in various regions. We re-investigated the infection of common parasites and AR of Gastrointestinal Nematodes (GINs) in sheep in Horqin Right Wing Front Banner, and first investigated the common parasite types and AR of GINs in sheep at other four areas in Hinggan league (city), China.
Results: A total of 1770 fecal samples were collected from 1 prefecture-level city and 4 counties in Hinggan league, in which the infection rate of Coccidia ranged from 83.
BMC Cancer
December 2024
Department of Gastrointestinal Surgery, Graduate School of Medicine, The University of Tokyo, Tokyo, 113-8655, Japan.
Objective: Early detection of recurrent gastric and esophageal cancers remains a critical challenge. Innovative and non-invasive cancer screening technologies, such as N-NOSE, can improve early detection. N-NOSE is a urine-based scent test that leverages the olfactory abilities of the nematode C.
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