background and objectives: neisseria meningitidis is transmitted from person-to-person. thus, close contact with a healthy carrier can facilitate the spread of the bacteria and lead to life-threatening meningococcal disease. the aim of this study was to identify oropharyngeal carriers of n. meningitidis in volunteers preparing for military service before vaccination. materials and methods: in a...

background: it is estimated that about 370 million people are chronic carriers of hbv worldwide. apparently 3% of iranian populations are chronic carriers of this virus. we aimed to evaluate the viral dna in biological fluids of chronic hepatitis patients compared to a control group. methods: the current case-control study was designed to evaluate the viral dna in biological fluids of 70 chroni...

BACKGROUND Haemorrhagic septicaemia (HS) is an acute septicaemic disease of buffalo and cattle caused by Pasteurella multocida B:2 and E:2. Field outbreaks of HS are known to result in localisation of bacteria in the tonsils of surviving buffalo, confirming that animals can become carriers and the role of respiratory tract in the transmission of the disease. This report describes additional sit...

Genotyping of the South African, registered, Brahman cattle population for the 470del20 mutation in the CHRNE gene causing congenital myasthenic syndrome (CMS) was carried out in 1,453 animals. Overall prevalence of carriers was 0.97% (0.50 to 1.68%, 95% confidence interval). Carrier prevalence among breeding bulls in 2004 was 1.22% (0.65 to 2.15%, 95% confidence interval), and had not changed ...

milk urea nitrogen (mun) of dairy cows was determined in relation to breed. a total of forty (40) pabna and red chittagong dairy cattle each of twenty (20) were selected to know the milk composition, nutritional status and milk urea nitrogen. live weight of pabna cattle (187±14 kg) was higher than that of red chittagong cattle (174±4 kg). in pabna cattle milk yield (4.94 kg), minerals (0.15%) a...

As a beef cattle nutritionist, two things have been drilled into to me from early on: 1) the cheapest way to feed the cow is to let her “harvest” her own feed by grazing, and 2) corn is the cheapest source of energy for fed cattle. However, fluctuations in corn and land prices in more recent years have raised questions regarding the truth in these old adages. The objectives of these proceeding ...

This study was designed to evaluate serum and milk haptoglobin (Hp) as an inflammatory indicators for the diagnosis of diseases in cattle in Fars province of Iran. Blood samples were collected from the coccygeal vein of 20 clinically healthy cattle and 100 cows with various inflammatory diseases. There were significant differences in serum and milk Hp between clinically healthy cattle and disea...

This paper defines some of the scientific terms used when discussing genetic conditions, and reviews the genetic implications and consequences of mating individuals with various genotypes. Many genetic defects are recessive, and the reason for this is that mutant alleles often render the resulting protein nonfunctional. These are called “loss of function” alleles. In many cases if an individual...

background : in this experiment, abdominal cavity of 518 iranian sistani cattle and 498 brahman cattle were inspected for the presence of setaria spp. from april 2012 - may 2013. methods: the species were determined by microscopic examination of the mor-phological characteristics of the anterior and posterior parts of the parasites and authentic guidelines. results: the overall prevalence of se...

Anaplasma bovis is a leukocytotropic agent of bovine anaplasmosis and there is no available information about molecular study on this agent in cattle of Iran. In this study a total 150 cattle blood samples were collected from central part of Iran. The presence of A. bovis examined using light microscopic detection and species-specific nested polymerase chain reaction (nested-PCR) based on 16S r...