Tag Archives: Poultry

Researchers work on lowering greenhouse gas emissions from poultry houses

The University of Delaware’s Hong Li is part of a research team looking at how adding alum as an amendment to poultry litter reduces ammonia and greenhouse gas concentrations and emissions, specifically carbon dioxide, in poultry houses. Li partnered with researchers at the United States Department of Agriculture (USDA), the University of Tennessee and Oklahoma […]

Tags: , ,

* When chickens go wild

“Don’t look at them directly,” Rie Henriksen whispers, “otherwise they get suspicious.” The neuroscientist is referring to a dozen or so chickens loitering just a few metres away in the car park of a scenic observation point for Opaekaa Falls on the island of Kauai, Hawaii. The chickens have every reason to distrust Henriksen and […]

Tags: , ,

US government approves transgenic chicken

Transgenic chickens are the latest animals engineered to produce ‘farmaceutical’ drugs. The US Food and Drug Administration (FDA) has approved a chicken that has been genetically engineered to produce a drug in its eggs. The drug, Kanuma (sebelipase alfa), is a recombinant human enzyme marketed by Alexion Pharmaceuticals. It replaces a faulty enzyme in people […]

Tags: , ,

Why we’re smarter than chickens

Toronto researchers have discovered that a single molecular event in our cells could hold the key to how we evolved to become the smartest animal on the planet. Benjamin Blencowe, a professor in the University of Toronto’s Donnelly Centre and Banbury Chair in Medical Research, and his team have uncovered how a small change in […]

Tags: , ,

* Some vaccines support evolution of more-virulent viruses

Scientific experiments with the herpesvirus such as the one that causes Marek’s disease in poultry have confirmed, for the first time, the highly controversial theory that some vaccines could allow more-virulent versions of a virus to survive, putting unvaccinated individuals at greater risk of severe illness. The research has important implications for food-chain security and […]

Tags: , , ,

* New method may eliminate antibiotic use in livestock

Posted on

A University of Wisconsin-Madison animal scientist has developed an antibiotic-free method to protect animals raised for food against common infections. The innovation comes as growing public concern about antibiotic resistance has induced McDonald’s, Tyson Foods and other industry giants to announce major cuts in antibiotic use in meat production. About 80 percent of antibiotics in […]

Tags: ,

Vaccines developed for H5N1, H7N9 avian influenza strains

Posted on

Researchers have developed vaccines for H5N1 and H7N9, two new strains of avian influenza that can be transmitted from poultry to humans. The strains have led to the culling of millions of commercial chickens and turkeys as well as the death of hundreds of people. Wenjun Ma, assistant professor of diagnostic medicine and pathobiology at […]

Tags: , ,

How did the chicken cross the sea?

Michigan State University researcher Eben Gering has collaborated with a team in a study of the mysterious ancestry of the feral chicken population that has overrun the Hawaiian Island of Kauai. Their results, published in the current issue of Molecular Ecology, may aid efforts to curtail the damage of invasive species in the future, and […]

Tags: ,

Timing of Influenza A(H5N1) in Poultry and Humans and Seasonal Influenza Activity Worldwide, 2004–2013

Co-circulation of influenza A(H5N1) and seasonal influenza viruses among humans and animals could lead to co-infections, reassortment, and emergence of novel viruses with pandemic potential. We assessed the timing of subtype H5N1 outbreaks among poultry, human H5N1 cases, and human seasonal influenza in 8 countries that reported 97% of all human H5N1 cases and 90% […]

Tags: ,

Pet foods: Not all brands follow meat regulations

Researchers in ChapmanUniversity’s Food Science Program have just published a study on pet food mislabeling. The study focused on commercial pet foods marketed for dogs and cats to identify meat species present as well as any instances of mislabeling. Of the 52 products tested, 31 were labeled correctly, 20 were potentially mislabeled, and one contained […]

Tags: ,

Highly pathogenic fowlpox virus in cutaneously infected chickens, China

Posted on

We investigated an acute outbreak of the cutaneous form of fowlpox among chickens in China in November 2009. Using pathologic and virologic methods, we identified a novel type of fowlpox virus that carried an integrated genomic sequence of reticuloendotheliosis virus. This highly pathogenic virus could lead to severe ecologic effects and economic losses. Fowlpox has […]

Tags: ,

* Chicken project gets off the ground

Posted on

Modern chickens are descended primarily from the red junglefowl. The meat and eggs of domestic chickens are a source of protein for billions. Yet how and when the birds were domesticated remains a mystery. The answers to these questions could reveal a wealth of information about the genetics of domestication, as well as human behaviour, […]

Tags: ,

Barnyard chickens living just a few hundred years ago looked far different from today’s chickens

Posted on

Analyzing DNA from the bones of chickens that lived 200-2300 years ago in Europe, researchers report that just a few hundred years ago domestic chickens may have looked far different from the chickens we know today. The results suggest that some of the traits we associate with modern domestic chickens — such as their yellowish […]

Tags: ,

Vietnam on high alert over flu risk

Posted on

The H7N9 avian-influenza virus that has killed more than 100 people in China in the past year has for the first time been detected in a province bordering Vietnam, raising the prospect that the disease may take hold across Asia and beyond. It was found in poultry in the live-bird markets of southern China’s Guangxi […]

Tags: ,

Full genome of influenza A (H7N9) virus derived by direct sequencing without culture

An epidemic caused by influenza A (H7N9) virus was recently reported in China. Deep sequencing revealed the full genome of the virus obtained directly from a patient’s sputum without virus culture. The full genome showed substantial sequence heterogeneity and large differences compared with that from embryonated chicken eggs. Recently, a novel influenza A (H7N9) virus […]

Tags: ,

H7N9 influenza: History of similar viruses gives cause for concern

Posted on

The H7N9 avian flu strain that emerged in China earlier this year has subsided for now, but it would be a mistake to be reassured by this apparent lull in infections. The virus has several highly unusual traits that paint a disquieting picture of a pathogen that may yet lead to a pandemic, according to […]

Tags: ,

Bird flu in live poultry markets are the source of viruses causing human infections

Posted on

On 31 March 2013, the Chinese National Health and Family Planning Commission announced human cases of novel H7N9 influenza virus infections. A group of scientists, led by Professor Chen Hualan of the Harbin Veterinary Research Institute at the Chinese Academy of Agricultural Sciences, has investigated the origins of this novel H7N9 influenza virus and published […]

Tags: ,

Putting the clock in ‘cock-a-doodle-doo’

Posted on

Of course, roosters crow with the dawn. But are they simply reacting to the environment, or do they really know what time of day it is? Researchers reporting on March 18 in Current Biology, a Cell Press publication, have evidence that puts the clock in “cock-a-doodle-doo” (or “ko-ke-kok-koh,” as they say in the research team’s […]

Tags: , ,

How size of hen’s comb is linked to ability to lay more eggs

A lone rooster sees a lot of all the hens in the flock, but the hen with the largest comb gets a bigger dose of sperm — and thus more chicks. This sounds natural, but behind all this is humanity’s hunger for eggs. or thousands of years, people have tinkered with the development of domestic […]

Tags: ,

Vaccines backfire: Veterinary vaccines found to combine into new infectious viruses

Posted on

Research from the University of Melbourne has shown that two different vaccine viruses- used simultaneously to control the same condition in chickens- have combined to produce new infectious viruses, prompting early response from Australia’s veterinary medicines regulator. The vaccines were used to control infectious laryngotracheitis (ILT), an acute respiratory disease occurring in chickens worldwide. ILT […]

Tags: ,

Men can rest easy: Sex chromosomes are here to stay

Posted on

Fears that sex-linked chromosomes, such as the male Y chromosome, are doomed to extinction have been refuted in a new genetic study which examines the sex chromosomes of chickens. The study, published May 12 in the journal Proceedings of the National Academy of Sciences (PNAS), looked at how genes on sex-linked chromosomes are passed down […]

Tags: ,

Influenza virus A (H10N7) in chickens and poultry abattoir workers, Australia

Posted on

In March 2010, an outbreak of LPAI A (H10N7) was identified in a biosecure intensive commercial poultry enterprise in New South Wales, Australia. For 8–14 days, 10–25 birds died each day, compared with the normal number of 2–6 birds per day. An egg production decrease of up to 15% was documented in the affected flocks. […]

Tags: ,

Poultry culling and Campylobacteriosis reduction among humans, the Netherlands

In the Netherlands during March–May 2003, an outbreak of avian influenza (H7N7) virus among poultry led to the culling of >30 million birds. The outbreak, and thus the culling, was confined to a relatively small area of 50 × 30 km in the center of the country. A few years after the avian influenza outbreak, […]

Tags: , ,

New study identifies emergence of multidrug-resistant strain of Salmonella

A new study has identified the recent emergence of a multidrug-resistant strain of Salmonella that has a high level resistance to ciprofloxacin, a common treatment for severe Salmonella infections. The study, led by François-Xavier Weill, MD, and Simon Le Hello, PharmD, at the Pasteur Institute in France, is published in The Journal of Infectious Diseases […]

Tags: ,

US meat and poultry is widely contaminated with drug-resistant Staphylococccus aureus bacteria

Posted on

Drug-resistant strains of Staphylococcus aureus, a bacteria linked to a wide range of human diseases, are present in meat and poultry from U.S. grocery stores at unexpectedly high rates, according to a nationwide study by the Translational Genomics Research Institute (TGen) Nearly half of the meat and poultry samples — 47 percent — were contaminated […]

Tags: ,

Novel picornavirus in turkey poults with hepatitis, California, USA

To identify a candidate etiologic agent for turkey viral hepatitis, we analyzed samples from diseased turkey poults from 8 commercial flocks in California, USA, that were collected during 2008–2010. High-throughput pyrosequencing of RNA from livers of poults with turkey viral hepatitis (TVH) revealed picornavirus sequences. Subsequent cloning of the ≈9-kb genome showed an organization similar […]

Tags: ,

Transgenic chickens curb bird flu transmission

GM chickens could pave way for H5N1-resistant flocks if tall political, technical and economic hurdles can be overcome. Researchers have made genetically modified chickens that can’t infect other birds with bird flu. The H5N1 strain of influenza — which raged through southeast Asia a decade ago and has killed hundreds of people to date — […]

Tags: ,

Selected hens give new genetic insights

Studies of heavy, fast-growing hens and small, slow-growing hens provide important new knowledge on the origin of the genetic variation that has enabled them to adapt rapidly to new extreme environments. The findings, reported in the online journal PLoS Genetics, were made by researchers from the Swedish University of Agricultural Sciences, Uppsala University in Sweden […]

Tags: ,

Analysis of avian hepatitis E virus from chickens, China

Avian hepatitis E virus (HEV) has been identified in chickens; however, only 4 complete or near-complete genomic sequences have been reported. We found that the near-complete genomic sequence of avian HEV in chickens from China shared the highest identity (98.3%) with avian HEV from Europe and belonged to avian HEV genotype 3. Hepatitis E virus […]

Tags: ,

Half a billion eggs recalled in US salmonella outbreak

A quadrupling in the usual number of cases of infection with a strain of Salmonella enteritidis in May alerted the US Centers for Disease Control in Atlanta to a possible outbreak. The trail led the CDC and FDA to two Iowa farms now under investigation: Wright County Egg and Hillandale. Although the CDC initially linked […]

Tags: ,

Sidebar