نتایج جستجو برای: transition cattle

تعداد نتایج: 311304  

2014
Timm Konold Laura J Phelan Derek Clifford Melanie J Chaplin Saira Cawthraw Michael J Stack Marion M Simmons

BACKGROUND Atypical bovine spongiform encephalopathies (BSEs), classified as H-type and L-type BSE based on the Western immunoblot profiles, are naturally occurring diseases in cattle, which are phenotypically different to classical BSE. Transmission studies in cattle using the intracerebral route resulted in disease where the phenotypes were maintained irrespective of BSE type but clinically a...

2002
Lawrence L. Falconer Charles R. Long James M. McGrann

The beef cattle investment decision provides an excellent opportunity to increase the economic efficiency of beef cattle production. The investment questions that face beef cattle producers are of interest to beef cattle producers, educators, and financial institutions involved in lending to beef cattle producing firms. This study develops a decision support aid utilizing expert system technolo...

2014
Lakshya Veer Singh Shikha Saxena Smita Gupta Shishir Kumar Gupta G. Ravi Kumar G. S. Desai Aditya Prasad Sahoo

Aim: This study was undertaken to assess the differential expression levels of toll-like receptors (TLRs) 2, 3 and 7 in peripheral blood mononuclear cells (PBMCs) isolated from Tharparkar and Crossbred cattle belonging to different regions of India. Materials and Methods: PBMCs were isolated from blood samples of Tharparkar cattle from Indian Veterinary Research Institute (IVRI) farm (n=30); Su...

2009
Heriberto Fernández Marianne Hitschfeld

The prevalence of Campylobacter jejuni and Campylobacter coli and their biotypes in beef and dairy cattle from the South of Chile was established. Campylobacter were statistically more prevalent among beef cattle (35.9%) than among dairy cattle (21.3%), being C. jejuni the species most frequently isolated.

2009
Huan Zhao Xiaodong Du David A. Hennessy

Feeder cattle are fattened to become fed live cattle six months later. The U.S. feeder cattle industry is intensively competitive, so that market efficiency suggests feeder cattle prices should fully reflect feed prices and information on future fed cattle prices. Employing a long time series (1979-2004) of feeder cattle futures, live cattle futures, and local corn prices, we test whether compl...

Journal: :دامپزشکی 0
غلامعلی سبزواری نژاد دانشجوی دکترای تخصصی،گروه انگل شناسی، دانشکده علوم پزشکی، دانشگاه تربیت مدرس عبدالحسین دلیمی اصل استاد، گروه انگل شناسی، دانشکده علوم پزشکی، دانشگاه تربیت مدرس فاطمه غفاری فر دانشیار، گروه انگل شناسی ، دانشکده علوم پزشکی، دانشگاه تربیت مدرس مهدی فروزنده مقدم دانشیار، گروه بیوتکنولوژی، دانشکده علوم پزشکی، دانشگاه تربیت مدرس

neospora caninum is an intracellular parasite which causes abortion in cattle worldwide. this organism infects a range of host species, including cattle, sheep and dogs. it is most important and a major cause of bovine abortion. seroprevalence of infection in cattle appears to differ between herds, countries and regions, depending on the type of serologic test used. the aim of the present study...

Journal: :Preventive veterinary medicine 1997
W C Losinger

Producers participating in the United States National Animal Health Monitoring System 1994-1995 Cattle on Feed Evaluation provided information on cattle of Mexican origin in their feedlot operations. Cattle of Mexican origin accounted for 8.1% of cattle placed on United States feedlots from 1 July 1993 through 30 June 1994. Of operations with a one-time capacity of 1000 or more cattle, 12.8% pl...

Journal: :iranian journal of parasitology 0
y hamzavi a mostafaie b nomanpour

background: toxoplasmosis is a zoonotic disease, caused by cosmopolitan coccidian parasite, toxoplasma gondii. one of the most important sources of human infection is feeding from raw or uncooked meat of infected animals. in this study the prevalence of toxoplasmic infection in three important meat producing animals in iran was studied. methods: using indirect immunoflourcent antibody assay (if...

Journal: :Cancer research 1983
V K Kuchroo W J Halliday P A Jennings P B Spradbrow

Blood leukocytes from cattle with bovine ocular squamous cell carcinoma (BOSCC) react with extracts of BOSCC, and blood leukocytes from cattle with cutaneous papillomas react with extracts of papillomas in the erythrocyte rosette (E-rosette) augmentation test. Sera from cattle with BOSCC, with cutaneous papillomas, and with ocular papillomas and sera from lesion-free cattle were tested for thei...

M. Abbasvali S. M. Razavi S. S. Shekarforoush,

Although the high infection rate of microscopic sarcocyst occurs in cattle, to the best of our knowledge,there is no report about the identification of macroscopic sarcocyst in Iran. In this work, Sarcosystis hirsutawas first isolated from slaughtered cattle. In a 2-year-old slaughtered cattle, morphological examinationrevealed 3-5 mm in length cysts distributed in different striated muscles, p...

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