Common diseases encountered in the breeding stock of pigs.

Common diseases encountered in the breeding stock of pigs. In order for pig producers to be successful, keeping their animals healthy is key. It is essential to know about diseases that may occur in the herd and all staff working with the pigs should be able to spot the symptoms of common diseases and alert the manager or veterinarian, as appropriate. Treating pigs quickly with suitable medication is the next step as prevention is obviously better than cure. There is a need to have a herd health plan will help to minimize disease incidence. #breeding #pigs. In terms of disease prevention, re-occurring themes include hygiene, ventilation and reducing stress. Pig producers need to provide an environment that is optimal for the animal and inhospitable for disease-causing agents. As well as reducing infection pressure, immunity must be promoted by measures such as optimal nutrition and good husbandry. Maintaining good biosecurity through every part of the production cycle will go a long way to preventing disease outbreaks. Managers should also ensure that breeding stock are purchased from high health status herds and suitably quarantined before introduction. #breeding stock Common diseases encountered in the breeding stock of pigs. 1) Mastitis Reduced milk production, loss of appetite and a higher body temperature are symptoms of mastitis in sows. It is caused by a bacterial infection of the mammary glands, where skin discoloration can be seen. Antibiotics, along with anti-inflammatory drugs are effective treatments. Oxytocin may be used to encourage let down of milk and corticosteroids can be prescribed. Hygiene in farrowing housing is important, along with nutrition during late pregnancy to promote immunity. Stress can also be a factor, and it is important to make sure that teats are not being damaged by sow housing facilities. This disease has a significant effect on productivity because of the potential effect of reducing the number of piglets weaned by sows. 2). Porcine parvovirus If pregnant sows become infected with parvovirus (PPV), reproductive disease can occur, but not in all cases. If it does, most commonly in gilts, reproductive performance is significantly affected. Mummification and stillbirths occur, resulting in small litter sizes. Other reproductive diseases have the same symptoms so accurate diagnosis is essential. Unusually, the virus can survive outside the host for several months, making it endemic in most herds. Although it is only during pregnancy that PPV is a problem, other pigs can spread the virus. There are no treatments available; in order to prevent this disease routine vaccination of gilts is advisable.

Mapping Zoonotic Disease.

Compiling data from hundreds of studies on past zoonotic disease outbreaks, Barbara Han, a disease ecologist at the Cary Institute of Ecosystem Studies in Millbrook, New York, and her colleagues have mapped where current reservoirs are most likely to be found. The goal was to be able to predict where future pathogenic leaps from mammals to humans are likely to occur. “What we really want to do is shift the strategy from one of being defensive—always running around putting out fires—to one that’s preemptive,” Han told The Washington Post. “One step toward that goal is to figure out where things are, what’s carrying the known diseases and what’s their distribution.” But the results, published today (June 14) in Trends in Parasitology, are only a piece of the puzzle, she added. “It’s a hard game to play because there’s hundreds and hundreds of combinations of different zoonoses and carriers. We’d hoped to find a unifying theme, and instead there’s just 45 more questions that need to be answered.” Zoonotic diseases are not, for example, concentrated in tropical environments, as might be predicted. In fact, the subarctic—Alaska, northern Canada, and northern Russia—had the same number of zoonoses as the tropics, despite being home to fewer reservoir species. “Even though there are more species in the tropics, fewer of them carry zoonoses,” Han said in a press release. “In contrast, more of the species living in northern latitudes, such as the Arctic Circle, carry more zoonoses. Understanding the implications of this pattern in light of climate warming trends will be an important line of inquiry that should be addressed sooner rather than later.” Other hot spots included Europe—consistent with previous zoonotic mapping efforts—as well as Southeast Asia. Han and colleagues also turned up surprises when assessing which types of animal hosts harbor the most zoonotic pathogens. Rodents, for example, carried about the same number as carnivores, despite having nearly 10 times as many species. “I’m hoping to work together with people who really understand public health to think about the wildlife human interface, and the cultural things that permit or prevent that from happening,” Han told The Washington Post. “This is a multifaceted question and very complex . . . and the devil’s in the details.” Contributed by the scientist.

Blood in a Mosquito’s Belly Could Reveal How Diseases Spread.

Keven is a doctoral student at Michigan State University, and leader of the mosquito-catching team. Over the last few summers, John Keven has spent many long nights under the stars in Papua New Guinea. For 12 hours at a time, he’ll scour a giant green net set up between thatched huts, looking for resting mosquitoes every 20 minutes. When he spots one with his headlamp, he quietly approaches, extending a long rubber tube to suck the bug off the net. Then he blows it from the tube into a container for analysis—in a lab halfway around the world. The undigested blood inside the Anopheles punctulatus mosquitoes Keven collects is going to the research team at the Cleveland Clinic in Ohio, which uses DNA markers to identify what the insects feed on through the night—information that could help predict how they spread disease. The team’s recent testing, published last month in the journal PLoS Neglected Tropical Diseases, revealed that this type of mosquito feeds on a wider range of species than expected, potentially influencing the way it transmits malaria. The bugs feast on the humans in the villages, but also the pigs, dogs, mice and even marsupial species in the area. But this study is only one of a growing number of attempts to characterize mosquito behavior by analyzing the blood they suck. The recent emergence of Zika virus, entomologists say that matching the DNA fingerprint of human blood inside mosquitoes with individuals could help shed light on how these insects spread disease—and who is most vulnerable. “The extent to which mosquitoes don’t bite on everyone the same might actually be important when you think about who’s most important to vaccinate,” says Steve Stoddard, an entomologist at San Diego State University who has studied mosquito feeding behaviors. Data from this type of work could influence how researchers mathematically model the possible future spread of diseases carried by mosquitoes. In 2014, Stoddard and his colleagues analyzed the feeding behaviors of the Aedes aegypti mosquito, the species that is a prime suspect in the current spread of Zika virus. This species can carry dengue, too, and it likes to hang around inside human dwellings, making it even riskier. The scientists collected mosquitoes from inside 19 households in Iquitos, a Peruvian port city on the Amazon, along with cheek swabs to capture DNA from 275 residents. read more here http://www.wired.com/2016/04/blood-mosquitos-belly-reveal-diseases-spread/

DNA KIT FOR DOGS TO ANALYSE DISEASE RISK AND TRACE GENETIC TREE.

A startup is kicking off and its using dog's saliva in its tool to give dog owners the disease of their breeds and trace the pedigree.The startup called EMBARK is a DNA KIT that will give information to owners about disease risk and also trace ancestry. The company founders rolling out the product says the real objective is that the research will help to conduct various tests with the DNA samples and use the potential of dog genetics to deliver advancements in human health. Dogs and humans share many of the same kinds of conditions, hence by studying the genetics of diseases in dogs, scientists may be able to figure out how these originate in humans. The kit by engaging mass numbers of dog owners, will provide data that will unlock the potential of the dog as a model system and that is the real idea behind Embark. The founders have figured out that it’s a lot easier to fund research if study participants — or their owners — pay for the privilege of taking part in a study. Cornell University School of Veterinary Medicine has already agreed to be an Embark research partner, and the company intends to conduct its own studies, under the guidance of Adam Boyko, Embark's chief science officer, a dog geneticist at Cornell University, and Ryan’s brother. This kit will provide a framework for breeders and dog owners and will also be an important planning tool in terms of insurance.Client education about various diseases ,management and life expectancy of certain conditions will really help to address issues of breeding and animal welfare. The snag about this test will be the limiting of certain breeds and excessive breeding of other breeds which will over time phase out some breeds. # data bank #gene pool # gene bank # breeders # genetics.

AGRIBUSINESS: FERTILIZERS AND FERTILITY IN MAN.

A recent study by scientists at the universities of Nottingham, Aberdeen (UK) and Paris-Saclay (France), The James Hutton Institute (Aberdeen) and UMR BDR, INRA, Jouy en Josas (Paris, France) and published in the journal Scientific Reports, has shown striking effects of exposure of pregnant ewes and their female lambs in the womb to a cocktail of chemical contaminants present in pastures fertilized with human sewage sludge-derived fertilizer. Eating meat from animals grazed on land treated with commonly-used agricultural fertilizers might have serious implications for pregnant women and the future reproductive health of their unborn children. The study highlights potential risks associated with the common practice of grazing livestock on pastures on which human sewage sludge-derived fertilizer has been used. While low-level chemical exposure poses a threat to human reproductive development but the consumption of products from animals grazing such pastures proves to be a considerable environmental concern. The research group investigated development of ovaries in the fetal sheep, which is very similar to ovary development in humans. The pregnant sheep was exposed to sewage sludge-derived fertilizer to simulate 'real-life' exposure. Since the number of eggs present in the ovary at birth is determined while still in the womb, the research shows that the implications of disrupted ovary development could be significant. It suggests that chemicals that interfere with this development process, particularly those that mimic sex steroids, may have long-lasting effects on adult female fertility. The researchers report that the number of eggs in the fetus' ovary was reduced even if the period of exposure was limited to 80 days corresponding to early, mid or late gestation. However, a period of mid or late gestation exposure had a greater effect on the development of the fetus and the number of altered genes and proteins in the fetus' ovary. The biggest effects on the fetal ovary were seen when the sheep were switched to sewage sludge fertilized fields in the last two to three months of pregnancy. This suggests that changing exposures to chemical mixtures may be worse than always being exposed to these mixtures. The role of the environment is spread of diseases and impact on health status can not be ignored ,hence steps to reduce contamination of sewage sludge-derived fertilizer are important and proper sanitation protocols must be enforced.

Pigs susceptible to virulent ebolavirus can transmit the virus to other animals.

Canadian investigators have shown that a species of ebolavirus from Zaire that is highly virulent in humans can replicate in pigs, cause disease, and be transmitted to animals previously unexposed to the virus. The findings are published in The Journal of Infectious Diseases A species of ebolavirus from Zaire that is highly virulent in humans can replicate in pigs, cause disease, and be transmitted to animals previously unexposed to the virus. To prevent human outbreaks of Ebola hemorrhagic fever, it is important to identify animal species that replicate and transmit the virus to other animals and, potentially, people. Zaire ebola virus, one of several species of the virus, has a fatality rate as high as 90 percent in humans. Antibodies to another species not associated with human disease, known as Reston ebolavirus, have been found in pig farmers in the Philippines, suggesting pigs may be able to transmit virulent ebolavirus to humans as well. Following mucosal exposure to Zaire ebolavirus, the pigs replicated the virus in high amounts, mainly in the respiratory tract. Shedding of the virus from nasal mucosa was detected for up to 14 days post-infection, and severe lung disease was observed. The study also showed that the virus was transmitted to all previously unexposed pigs co-habiting with the infected animals. The study authors suggest that domesticated pigs are susceptible to Zaire ebolavirus through mucosal infection and that the pigs' accompanying severe respiratory disease is associated with shedding of high viral loads into the environment, exposing uninfected pigs to the infection. In contrast to the systemic syndrome affecting multiple organs that often leads to shock and death in primates, they noted, the respiratory syndrome that develops in pigs could be mistaken for other porcine respiratory diseases. Source ;sciencedaily.

BAT'S IMMUNITY; A NEW MODEL FOR PREVENTING DISEASES IN MAN.

Bats are a natural host for more than 100 viruses, some of which are lethal to people, including Middle Eastern Respiratory Syndrome (MERS), Ebola and Hendra virus, however, interestingly bats do not get sick or show signs of disease from these viruses. A new study has revealed the distinct ability in bats,that enables them carry disease-agents and still remain unaffected by such organisms.For the first time researchers have uncovered a unique ability in bats which allows them to carry but remain unaffected by lethal diseases. Unlike humans, bats keep their immune systems switched on 24/7 and scientists believe this could hold the key to protecting people from deadly diseases like Ebola. The research published in the Proceedings of the National Academy of Sciences (PNAS), this new research examines the genes and immune system of the Australian black flying fox. Whenever our body encounters a foreign organism, like bacteria or a virus, a complicated set of immune responses are set in motion, one of which is the defense mechanism known as innate immunity,leading bat immunologist at CSIRO's Australian Animal Health Laboratory Dr Michelle Baker said. The team focused on the innate immunity of bats with particular reference to the role of interferons -which are essential for innate immune responses in mammals and to understand what's special about how bats respond to invading viruses. It was discovered that bats only have three interferons which is only a fraction -- about a quarter -- of the number of interferons found in people.This is surprising given bats have this unique ability to control viral infections that are lethal in people and yet they can do this with a lower number of interferons. The team also compared two type 1 interferons -- alpha and beta.The research showed that bats express a heightened innate immune response even when they were not infected with any detectable virus. Man and mice activate their immune systems only in response to infection, the bats interferon-alpha is constantly 'switched on' acting as a 24/7 front line defense against diseases In other mammalian species, having the immune response constantly switched on is dangerous because it's toxic to tissue and cells- whereas the bat immune system operates in harmony. The important role bats play in the eco-system as pollinators and insect controllers is recognized, bats are also increasingly demonstrating their worth in potentially helping to protect people from infectious diseases.

Public Private Partnerships to limit disease spread due to global travelling.

A new study from a team at the University of Arizona in the US has found that international travel – along with trade – can be listed as being among the most efficient methods of spreading infectious diseases.

   This is due to the fact that people sick with communicable infections may unknowingly board planes and spread their illnesses to both fellow passengers and the residents of their destination country. Led by Charles Perrings, a professor of environmental economics at the university, the team behind the research cited the recent Ebola outbreak as an example – while a global pandemic did not occur, and the majority of the 8,000 people who died from the disease were from the outbreak’s source countries in West Africa, a man from Liberia did become patient zero in the US and later died from Ebola. 

 Two of his attending nurses also contracted the disease, although they later recovered. While this was a thankfully small-scale example, it can be considered a microcosm of what a larger epidemic or pandemic might look like. 

 The research paper also pointed towards international trade, mentioning the hoof and mouth outbreak that cost the government of the UK billions, and other diseases such as swine and avian flu.

 In terms of solutions, Perrings suggested addressing these issues ‘at the source’, and confronting those behind the import and export of potentially dangerous materials with the risks. 

 “The recent Ebola outbreak made us realize that we are all just a plane ride away from exposure to emerging infectious diseases,” said Perrings. 

“The more trade grows as a proportion of global production, the more likely it is that diseases will be spread through trade, and the higher the economic cost of resulting trade bans. What is at risk is the food we eat, the fibres we wear and build with, and the fuels we burn. In addition, many infectious diseases that affect animals also affect people. 

Zoonoses like SARS, MERS, HIV, AIDS [and] highly pathogenic avian influenza all originated in wild animals and were then spread person-to-person through trade and travel.” He went on to say: “There are two problems to address. One is that disease spread is an unintended (external) effect of trade. 

To solve this problem exporters and importers need to be confronted with the risks they impose on consumers. The other is that the control of infectious disease is a public good – the benefits it offers are freely available to all, and so will be under supplied if left to the market. 

To solve this problem, we need to undertake co-operative, collective control of infectious diseases at the source.” He suggested financial incentives for risk reduction in developing countries and establishing a global fund to combat and control infectious diseases. 

Currently, countries have the right to act defensively in their own interests once a disease is introduced, controlling the outbreak and working to reduce the possibility of reinfection by banning trade with countries that pose a risk. This, however, will not stop new diseases emerging, said Perrings: 

“The One Health Initiative suggests that what is needed is co-operative collective action to reduce risk at the source. This requires a partnership between the rich countries that have the resources to fund global prevention, and the poor countries where disease is most likely to emerge. 

The management of infectious diseases of animals and plants, like the management of infectious diseases of people, is now a global problem that requires global solutions. 

This in turn requires a more strongly co-ordinated and co-operative approach than is currently allowed under the General Agreement on Tariffs and Trade (GATT) and the Sanitary and Phytosanitary Agreement.” culled from international travel and health insurance journal.

Antimicrobial resistance :rats a major link in antimicrobial resistance in animals and man.

The world is faced with the issue of drug-resistance, super bugs and antibiotic residue in animal-by-products,forcing producers to look critically at methods of production and handling of products to resolve these issues. 

The war against super bugs is super hot with various school of thoughts proposing various theories and solutions to resolve the issue to ensure better health for man and the food animals consumed. The environment has been know to play host to various disease agents and the host/carriers are also housed in the environment,creating an unending cycle of infection to diverse hosts. 

 Rats are ubiquitous,with the propensity to carry disease agents in their urine,feces,hair and feet.These creatures could actually be the missing link in the antibiotic resistance saga. 

 Rats presence in poultry houses,farms and pet homes result in feed/water contamination with urine/feces resulting in salmonellosis,which the farmer responds to using antibiotics. When the source of infection is not removed, there will be a continuous cycle of infection-reinfection and treatment with various antibiotics .

  The threat of rats to health of man and animals is real and must be properly understood to ensure the necessary strategy is incorporated. A recent study by scientist in the University of Colombia, has revealed the risk that rats pose:Rats can absorb disease agents from their local environment and spread them, according to a University of British Colombia new study. The results also indicate that the threat rats pose to the health of poultry and humans has been underestimated.

Researchers studied the feces of rats caught at an Abbotsford, B.C. poultry farm, and discovered they all carried avian pathogenic E. coli, a bacteria with the ability to cause disease in chickens and potentially humans. More than one quarter of the rats were carrying multi-drug resistant strains of the bacteria. 

The findings support lead author Chelsea Himsworth's theory that rats act as a "pathogen sponge," soaking up bacteria from their environment. If rats can absorb pathogenic E. coli, then they could potentially be a source of all sorts of other pathogens that we have not anticipated," said Himsworth, assistant professor in the UBC School of Population and Public Health and leader of the Vancouver Rat Project, a group aiming to address the knowledge gap about the health threats associated with rats. 

 Himsworth was surprised to find that the E. coli strains carried by the farm rats were very similar to those found in chickens, and totally different from E. coli strains found in urban rats. Basically, the rural rat gut looked like the poultry gut, and nothing like the urban rat gut . 

 This latest study follows previous research by Himsworth that found human pathogens, including MRSA (methicillin-resistant Staphylococcus aureus) and C. difficile, in the feces of rats in Vancouver's Downtown Eastside. 

 Rat infestations ought to be taken seriously," said Himsworth. "They need to be tackled with an educated, informed approach in collaboration with scientists and pest control professionals. There should be the development of municipal programs for managing rat infestations and rat-related issues. 

 Rodent control # rodenticide rodent bait # rodent proof.

HANDLING THE RAT MENACE..

. Rats have been linked to the spread of a lot of disease ,some are fatal while others can be treated.The best way to stay safe is by rodent control.The health risk posed by rats affects man, poultry,dogs and some other animals. Diseases occur as a result of interaction between hosts, agent and environment.Rats are no different from all other carriers,in this sense hence environment influences the infection and risk/rate of exposure. Living in a dirty,unkempt environment increases the chances of infection and consequent spread of infection.Rats are know to thrive where there is food and water, and most rats can eat anything. Living in close quarters with dogs, poultry and horses increases risk of infection.Living in highly populated environment surrounded by filth also poses risk of infection.Rats find their way to food industry and food processing plants posing a risk of food contamination from source. Rats are everywhere causing diseases by contamination through urine,feces, hair,and feet. Rats basically transfer these disease agents by contamination of feed,food,water,toys and clothing.The best way to avoid any disease is by proper pest control and maintenance of clean environment.The following are steps to keeps rats out;1) Use of rat traps 2) keep houses/farms rodent proof; by removing unfinished food, cover bins and keep them far away from homes. 3) rat adhesive boards 4) baits 5)proper waste management. 6) rat-proof your doors,windows in farms,homes and factory. Rats cause food wastage resulting in economic losses,when a food is contaminated by urine or feces,throw away immediately. If you suspect your pets toy is contaminated with rat urine throw away,same with clothing or any other contaminated material. Stay safe # avoid rat bites # dont eat rats # keep environment clean.

MORE BIRD FLU OUTBREAKS IN FRANCE!!!

FRANCE - Following the detection of three avian influenza outbreaks in Dordogne, three more outbreaks have been confirmed in Landes and Dordogne. The new outbreaks were detected after increased surveillance was put into place across France, including active surveillance of clinical signs of avian influenza in sensitive species. Abnormal mortality levels detected by farmers have also led to systematic sampling. The confirmed outbreaks, which took place in guinea fowl and ducks in Landes and ducks in Dordogne, a press release from the French agriculture ministry said that other outbreaks were suspected. Protection zones, surveillance, biosecurity and stamping out of the disease on the affected farms have been used to try and prevent the virus spreading. The issue of biosecurity with active surveillance is key to curb the spread of the virus and the issue of early reporting when there is a high number of mortality with a short period ,is also very important. story credit; poultry site.

VETERINARY MEDICINE: HORSES AND MOSQUITOES.

Mosquitoes cause a number of diseases in horses such as west Nile virus,the eastern,Venezuelan and western encephalomyelitis..The mosquitoes transmit these infectious agents by sucking blood of the horses.The mosquito bite though painful characterized by chewing and scratching cause severe diseases,and vaccination is the only form of prevention of such diseases. Horses should be protected from mosquitoes in barns and stalls to prevent these infections; these tips will keep horses/stables mosquito free. 1)remove any object that can collect water,destroy all tins or vessels that has stagnant water. 2)dont litter pasture with manure. 3)deworm horses regularly. 4) spray insecticides in stables/barns, 5) keep drains clean and spray insecticides in drain. 6) use fans in stables/barns to deter mosquitoes.Mosquitoes operate where there is heat and carbon dioxide buildup,thus using fans will ensure free flow of air and remove the carbon dioxide.The fans keep the air moving,making it impossible for the mosquitoes to operate as they only function where air is still. 7) remove manure from stalls daily and from pasture 2 times a week. 8) use of screens in stable. 9)dont leave lights on overnight in stables and during the evening.

BIRD FLU AND EGG PRODUCTION.

Egg production in the poultry value chain is affected by various factors especially diseases, the bird flu virus being a major culprit.Egg production still very low due to losses incurred during outbreak. Layer farms http://www.agweb.com/article/egg-production-still-low-in-south-dakota-after-bird-flu-NAA-associated-press/