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Animals that you never would have thought they were relatives.
We’ve learned that the relationship determines the resemblance: is it fair to expect a couple blue-eyed blondes have the same blonde kid with eyes of heavenly color. However, the nature of the known and far more intricate family ties. Quite often, ties of blood unite the species, do not resemble each other neither in outward appearance nor the way of life. Introducing animals that you would never have thought that they were siblings.
Already for anybody not a secret that whales and dolphins, although looks very similar to fish, are mammals. They breathe air, feed their young milk, and their tails are fused hind limbs. It is not surprising that scientists have searched for the ancestors of cetaceans among land animals. For a long time it was believed that their ancestors were mezonigie is curious of the extinct mammals that unites the signs of carnivores (eat meat) and ungulates (instead of feet had hooves). However, recently it was revealed that the closest relatives of whales and dolphins are hippos the representatives of the group of ungulates that includes pigs, camels, giraffes and deer. As shown by genetic analysis that whales and hippos there is a common ancestor that lived 50-60 million years ago. The degree rodstvenikam great that it was even proposed to create a common squad cytopathicity.
As you know, “born to crawl — can not fly”. But for nature there are no rules. Albatrosses and petrels — the true kings of the sky. Continue reading
How dangerous is psittacosis? Veterinary laboratory
Pathogen — neorickettsia (chlamydia), in their evolutionary development they are between bacteria and viruses.
The source of infection is often a sick bird — a virus carrier, releasing the microorganisms from nasal mucus, sneezing, coughing, with the dung. Infection occurs by airborne and alimentary, particles of dried droppings from sick birds, downs, slomannye the epithelium of the skin can get into the lungs, air sacks of birds and gastro-intestinal tract and there penetrating through the mucous membranes, causing the disease. A bird ill with psittacosis, usually for a long period of time remains a virus carrier.
Reservoir and source of infection for humans are domestic and wild birds. The largest epidemiological significance have Pets poultry (especially ducks and turkeys), room birds (parrots, wavy parrots, Canaries and other small songbirds) and especially urban pigeons and crows, the infestation of which ranges from 30-80%.
Ill persons who are constantly in contact with birds (poultry workers, meat processing plant, breeders of birds, etc.) the Ill person primarily middle-aged and older, children get sick much less often. Patients with psittacosis not a danger to others represent. In the human body, the pathogen enters mainly through the mucous membranes of the respiratory system. Infection occurs by inhalation of dust containing chlamydia (dried particles of bird faeces and discharge from the beak, contaminated particles down, etc.). Continue reading
Advice animals under one year veterinary clinic
This is the most common misconception owners. These statements inspire buyers of purebred animals breeders for the purpose of obtaining alimony puppies and kittens. It should be noted that if the animal and give birth to healthy, mating, at least, should be carried out through the chute, i.e. one to three times a year! Such a conclusion can be drawn from the fact that pregnancy lasts have allowed, on average, two months and lactation for two months, and, without waiting for its termination, some females are ready for fertilization! In this regularity we do in fact make regular cleansing of the uterus and may prevent its inflammation, but the whole body, of course, works on the wear. In nurseries, even in good conditions, miniature dog breeds and exotic cats rarely give birth on their own and infrequently there are animals older than three years.
“We need to make our boy’s girlfriend”
The female can give birth 1 to 3 times a year. Unleashed male must cover at least 1 time per month, and ideally once every two weeks, otherwise prostatitis and mental problems are inevitable. To achieve such regularity of mating, the male must be very valuable in genetic terms and a good result in show trials, to prove with the first litters that steadfastly conveys his qualities and is an improver of the breed, not only dagnone to be alternates – related close males. Continue reading
