BACKGROUND Layer chickens are exposed to high risks of production losses and mortality with impact on farm profitability. The harsh tropical climate and severe disease outbreaks, poor biosecurity, sub-minimal vaccination and treatment protocols, poor management practices, poor chick quality, feed-associated causes, and unintended accidents oftentimes aggravate mortality and negatively affect eg...

The present study was designed to examine the anatomical parameters of the cardiopulmonary system, the function of venous blood gas parameters and the development of ascites incidence in two genetic line chickens. Three hundred forty day-old chickens from two pure broiler breeder lines, which were different in their growth rate and susceptibility to ascites syndrome were obtained. The relative ...

the data used in this research were according to survival rate records of 9700 lambs from 735 rams and 8082 ewes, which collected at moghani flock breeding research station during the year 1365 to 1390. the frequency distribution causes of culling and survival distribution function of lambs to yearling age were estimated by sas (2000). results revealed that 49.81 percent of total lambs were cul...

The digestive system of young birds is very poor and inefficient in digestion absorption fat due to less lipase production low rate bile formation, which can be overcome by the use exogenous emulsifier. This study aimed evaluate comparative efficacy herbal synthetic emulsifiers on growth performance, nutrients utilization, haemato-biochemical profile, carcass quality broiler chickens fed energy...

Marek's disease virus (MDV) is a herpesvirus that induces T lymphomas in chickens. The aim of this study was to assess the role of the macrophage activator chicken myelomonocytic growth factor (cMGF) in controlling MDV infection. B13/B13 chickens, which are highly susceptible to MD, were either treated with cMGF delivered via a live fowlpox virus (fp/cMGF) or treated with the parent vector (fp/...

Highly pathogenic avian influenza virus (HPAIV) is a permanent threat due to its capacity to cross species barriers and generate severe infections and high mortality in humans. Recent findings have highlighted the potential role of PB1-F2, a small accessory influenza protein, in the pathogenesis process mediated by HPAIV in mammals. In this study, using a recombinant H5N1 HPAIV (wt) and its PB1...

the first kidney transplant survival is very important. we know that short-term survival of kidney transplantation is improved over the past two decades in iran; however, no information is available on long-term survival and predictors. this study explored factors influencing long-term renal transplant survival at northwest of iran.in this single-center, study, survival rates and half-life of 2...

Background: Salmonella enterica serovar Enteritidis (S. Enteritidis) is a human and animal pathogen that causes gastroenteritis characterized by inflammatory diarrhea and occasionally an invasive systemic infection. Salmonella pathogenicity islands (SPIs) are horizontally acquired genomic segments known to contribute to Salmonella pathogenesis. The objective of the current study was to determin...