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...

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...

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...

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...

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...

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...

The objective of this study was to compare the presence on goats and cattle of adult ticks that usually infest cattle. To this end ticks collected from sets of five goats were compared with those collected from sets of five cattle at 72 communal dip-tanks in the eastern region of the Eastern Cape Province. Amblyomma hebraeum was present on goats at 25 and on cattle at 39 dip-tanks, and a total ...

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 cuta neous papillomas, and with ocular papillomas and sera from lesion-free cattle were tested for the...

bovine neosporosis caused by the apicomplexan protozoan parasite n. caninum, was initially recognized in 1989 and is now reported as a leading infectious cause of reproductive failure in dairy cattle in world wide. the aim of this study was to determine the seroprevalence of n. caninum infection in industrial dairy cattle of hamedan province (west of iran) by elisa method. blood samples were co...