DNA has been collected in various way, including soil and water, now scientists have proven that environmental DNA (eDNA) can be collected from the air.
Both plants and animals shed DNA in the environment that they interact with. Dr. Elizabeth Clare, of the Queen Mary University in London has stated that ecologists and conservationists are always looking for non-invasive ways to monitor biological environments, collecting DNA from the air provides one way to do this.
An added benefit to monitoring eDNA is that it will allow researchers to study the transmission of airborne diseases. What the study does not mention is how long the eDNA exists in the air. However, it is an interesting and beneficial step in the right direction that will benefit the health of all living things.
Although this article is not specifically about animals, I thought it was important enough to include on my blog site.
A research team from the University of Georgia has conducted a study about how sugar affects the brain. I have quoted part of the article below. Based on this research I would caution pet owners, especially those people who have puppies that are slated to be working dogs, to watch the dog’s sugar intake. We do not know how this finding affects other animals. People who have younger children should be especially careful since they tend to share their treats with their pets which could significantly raise the pet’s sugar level.
“New research led by a University of Georgia faculty member in collaboration with a University of Southern California research group has shown in a rodent model that daily consumption of sugar-sweetened beverages during adolescence impairs performance on a learning and memory task during adulthood. The group further showed that changes in the bacteria in the gut may be the key to the sugar-induced memory impairment.”
For the first time a team of researchers have developed the first step to easily use stem cells to create stem cell therapies to fight diseases in dogs. By doing this they can also model diseases.
The research team from Japan, led by Associate Professor Shingo Hatoya from Osaka Prefecture University used a “foot-print” free method that controls how the cells replicated in the body preventing problems with the previous methods that were used.
The research team believes that with continued research, their findings might be able to help humans since dogs share the same environment and develop the same diseases, especially genetic diseases. Perhaps the the research will expand to other animals, helping all of our pets.
Associate Professor Shingo Hatoya from Osaka Prefecture University, and his team have developed a more reliable way to develop easy stem cell therapy for dogs.
This has paved the way for more research that will enable veterinarians to treat otherwise untreatable chronic and degenerative health issues in dogs. In the past, this was not as critical because dogs did not live as long. But with modern medicine, dogs are living longer and thus are suffering from age related conditions that exist more today than in the past.
The research team feels that because dogs and humans share much of the same environment, the results of their research may have a ripple affect to humans since they share some genetic diseases.
A new study by Global Ecology and Biogeography with lead researcher Daniel Becker, a postdoctoral fellow at Indiana University developed a model that identified, with an 80% accuracy, the species of birds that spread Lyme’s Disease. They found 21 new species that spread the disease.
The research team found about 102 other studies that showed Lyme disease infection from ticks feeding on the birds. There were 183 species of birds that infect the ticks with Lyme’s. The birds have a broad range that spans the Americas, Africa, Asia and Oceania.
What this means is that even though the birds do not spread Lyme to people, the ticks on them can drop off of the bird into a garden or yard and then attach to a person. Because birds can fly great distances, they can spread Lyme’s disease to areas that previously did not have it or did not have a lot of it.
The study found that thrushes are the riskiest bird as well as perching birds and those that eat seeds and forage on the ground.
Author’s note: Tick activity is always the strongest in the spring and fall where there are definite seasons. Always take precautions when outside, especially wearing long sleeves, long pants with your socks over the cuff of your pants. This prevents ticks from crawling up your pant legs. Use bug repellent and cover your head. After working outdoors, remove and wash all clothing and be sure to check your entire body for ticks.
The following is the third part in a series of eight articles about breeding dogs. Although it applies to a dog, it also applies to cats. People do not realize that there are cat mills which are similar to puppy mills. Note that these articles are based on my years of experience, my opinion and that I do not intend to refer to any individual. Please read the entire eight articles to glean a full understanding of breeding.
There are six types of breeders.
There is the ethical breeder who studies lines and has a goal that they hope to accomplish with a breeding. This goal can be for a litter who has a solid temperament. It could be for conformation showing, for a good working dog and a combination of qualities. It is important to understand that temperament and intelligence are the two qualities that make a dog a good pet or working dog. A dog who meets the conformation standard without a good temperament or intelligence is not a desirable pet or working dog.
Ethical breeders are typically involved with a breed club or organization that monitors the ethics of the breeder. The ethical breeder does not produce multiple litters at one time and often only has one or two litters a year. They do not breed their dogs before they are tested for inherited issues or are under two years old. The ethical breeder will only breed those dogs who are worthy of breeding having been cleared of inherited issues and has been proven as a good show or working dog. Only exceptional dogs are bred. Ethical breeders work with the puppies from birth to placement so that they are socialized.
Ethical breeders often have waiting lists for puppies because their lines have been proven. They also only line breed or outcross. They rarely if ever inbreed.
The ethical breeder rarely makes a profit from their dogs due to the expenses of raising, testing and proving their dogs. Their litters are consistent in temperament, health and conformation. The ethical breeder will often guarantee the quality of their puppies.
Puppies from an ethical breeder are registered with a recognized registry. In the US this will be either the American Kennel Club or the United Kennel Club. In some cases, there are breed registries that are recognized as well. There are other registries that will register any type of animal and those that cater to the puppy mills. (See Registries Part 2)
The new breeder. Everyone has to start sometime. A small in-home breeder who is being mentored by an experienced breeder can be a quality, ethical breeder. Not every breeder has a large kennel. Most ethical breeders have a number of dogs that live in their house with them as pets. A home-raised puppy from an ethical breeder is the ideal place to get your puppy. The quality of the breeding is not measured by the number of dogs a breeder has, but by the care and goals of the breeder.
The commercial breeder mass produces puppies from a limited number of dogs. Their puppies are often registered with a national registry but the care and planning of the lines does not exist. Their goal is to make money so they often shortcut the testing and care of their dogs including the puppies. Their puppies are not from proven stock, are not consistent in temperament, health and conformation. These breeders will produce the breeds that are popular and likely to sell. They often produce a number of different breeds.
The puppy mill breeder. These people breed solely for profit. The dogs are often kept in cages and rarely given attention. They are not part of the family but viewed as livestock. They do no testing or planning and have no goals except to produce puppies and make money. Often these puppies are not pure and are not registered or if they are, they are registered with a non-recognized organization that supports puppy mills.
These puppies are often not consistent in temperament, conformation and are more prone to health issues.
The backyard breeder. This is the person who thinks they can make money from their pet. Due to a lack of understanding about breeding these puppies are one step away from the puppy mill breeder. The parents have no health testing, there is no consistency in the litter since they are randomly bred with no understanding of genetics. Because the backyard breeder does not understand all that is involved in producing and raising a quality dog, they do not take the precautions or socialize the puppies properly.
The last type of breeder is a rather recent phenomenon. This is the designer dog breeder. These people take two different breeds and try to create a dog of their own design. There is no consistency in the puppies that result because they do not have a solid goal. One of the excuses these people use is to create an allergy free dog. Because allergies are not a result of dog hair but of dander, this is not possible. All dogs have dander. Unfortunately, since there is no consistent conformation with designer dogs, there is no way other than a DNA test, to prove that the dogs are the mix that the breeder claims. I have had clients come to me with a dog that was supposed to be a Labradoodle and the dog grew up to be a terrier. Unfortunately, there is no way to guarantee the puppies and the buyer cannot know for certain that they are getting what they paid for. Also, it is unfortunate that these breeders charge as much or more for the mixed breed puppies as a buyer would pay for a well-bred puppy from an ethical breeder. These puppies are not registered or if they are, they are not registered with a recognized organization.
What is also important to consider is that a person who has a well-bred dog from an ethical breeder is not likely to cross this quality dog with another breed. Therefore, by default, many designer dogs are created from less desirable stock, often obtained from puppy mill breeders.
Puppies and adult dogs will often swallow a foreign object that can potentially harm them. If they ingest an object that is sharp, and they seem normal and are not gagging, or choking, immediately give them Metamucil or another psyllium fiber product and then call your veterinarian. I keep unflavored psyllium fiber on hand so that if necessary, I can add broth to it so the dog will eat/drink it. If you don’t have psyllium fiber on hand the old-time remedy was to give the dog bread and milk or bread and water. The purpose of doing this is to form bulk or a coating around the object to prevent it from injuring the dog until a veterinarian can evaluate the situation and treat the dog. It is a first aid measure, not a cure.
Dogs should not be given any product that can be chewed into small undigestible pieces. Such items would be bones, both real and fake, plastic toys, balls, sticks, some of the teeth cleaning chews/products, rawhide, pig ears, and cow hooves. If you are in doubt as to whether or not a product is safe for your dog to eat, put it in a bowl of water. If it does not break down and dissolve in five to ten minutes it is most likely not safe for your dog to ingest.
Many people like to play tug-of-war with their dog and use rope toys. These are OK for this type of play, but a dog should not be allowed to chew and swallow any type of rope. The strands can block the intestines, they are not digestible. Also be careful of stuffed toys and any product made of cloth. These also can block the dog’s intestines and are not digestible. Many stuffed toys are stuffed with batting that is made of synthetic material, again, not digestible.
If your dog likes to play with stuffed toys, watch him carefully to see if he rips the toy apart to pull out the stuffing or if he is the type of dog that will not destroy the stuffed toy. The key with any type of toy is to know your dog. With care and observation, a dog can play safely with toys.
The question came up about why some animals such as cats, dogs and ferrets as well as humans can get the virus but bovine and swine do not. Researchers led by Professor Singh and his team which included Professor Rajinder Dhindsa (McGill University), Professor Baljit Singh (University of Calgary) and Professor Vikram Misra (University of Saskatchewan) decided to explore this question.
What they found is that those animals who can get the virus have two cycteine amino acids while those who do not only have one. This discovery will most likely lead to a cure for the virus. This is exciting news. Please read the whole article for a more in-depth explanation of how this works.
A study by researchers at the University of Helsinki have determined that there is a benefit to feeding dogs a raw food diet. They found that dogs eating raw food had better immune systems, more antioxidants and less inflammation of the skin.
The researchers stressed that the study was conducted on a limited number of Staffordshire Bull Terriers only and that more research is a necessity. However, the results of this study are promising.
Note: There are many advocates for feeding dogs a raw diet. Making your own can be a challenge as well as having a ready supply on hand to meet your dog’s needs. Many people claim that a raw diet has improved their dog’s health and even cured various medical issues.
There are a number of manufacturers who make a balanced raw food for dogs. Some people elect to make their own. This can be a challenge since the homemade food must meet all of your dog’s nutritional needs. As your dog ages those needs will change and so must the dog food. Dogs who have health issues must monitored by a veterinarian to be sure that their particular needs are being met.
Researchers have found that a gene mutation is responsible for breathing difficulties in Norwich Terries and Bulldogs that is not related to brachycephalic faces. Brachycephalic faces can cause Brachycephalic Obstructive Airway Syndrome or BOAS. Researchers found that Norwich Terriers can suffer from Upper Airway Syndrome or UAS which is similar to BOAS.
The team from the University of Edinburgh’s Royal (Dick) School of Veterinary Studies, led by Jeffrey Schoenebeck found that a mutation of the ADATS3 gene was linked to the breathing problems. This mutation is also found in French and English Bulldogs. The gene has been linked to edema, (swelling and fluid retention) which is a problem with UAS and BOAS causing breathing difficulties.
Once the researchers develop a test to determine which dogs have the gene mutation, breeders can better control breeding practices. What is important to recognize is that the mutation may occur in other breeds as well shedding a whole new light on breathing issues in dogs.