Silver black fox is a kind of gene mutation of red fox. It belongs to the family of canidae, which originates from Alaska and eastern Siberia in North America. After more than 100 years of artificial feeding and domestication, it has become the main species for people to breed precious fur animals. Silver black foxes are black and white, with a layer of mist-like hairs. They are the main accessories of modern fur garments.
Morphological characteristics
The silver and black foxes are basically the same as the red fox. The body coat is basically black. The silvery hair distributes the body evenly. The hips are silvery. The neck and head are gradually faded, the black is thick, and the hair is three color segments. The base is black, the tip of the hair is black, the middle segment is white, and the fluff is gray-brown. The silvery white hairs of the hairs are thick and long, set off between the gray-brown velvet and black hair tips, forming a silver mist. The black-black fox has a black coat on the snout, on both ears, on the back, on the abdomen, and on both limbs (white paws should be eliminated). In the corners of the mouth, there is silver hair around the eyes, and a silvery ring of silver hair on the face. The tail is gray-brown. The hair is the same as the back. The tail is pure white.
The silver black fox has high legs, a small waist, a thick and long tail, and a good run. It reflects agile and has a long and sharp kiss. The young fox's eyes are sunken. When the foxes are full, both eyes are big and bright. The ears are upright and the visual, auditory and olfactory sensations are more sensitive.
The weight of the male fox is generally 6kg-8kg, body length is 66cm-75cm, female fox weight is 5.5kg-7.5kg, and body length is 62cm-70cm.
Habits and food habits
The wild silver black fox grows inhabiting mountains, forests, grasslands and cold regions. It mainly eats meat and catches rodents, frogs, fish, small animals and birds. At the same time, some plant seeds, berries, roots, stems, etc. are also collected. Generally, they grow obese in the autumn. With the cold winter, the food is short and gradually becomes thinner. The main foods for family foxes include meat, fish, eggs, milk, blood, animals, fish meal, cereal seeds, and extruded soybean feed.
Silver and black foxes are more ferocious than blue foxes. In breeding, they are gradually phasing out those whose nature is hard to acclimate. After domestication, some silver and black foxes can be held in their arms and it is easy to get close to them. Scientists in Finland have observed and tested that the silver-black foxes who are well domesticated and who are not afraid of humans have a high birth rate and a high survival rate.
The enzyme-linked immunosorbent assay (ELISA) (/ɪˈlaɪzÉ™/, /ËŒiËˈlaɪzÉ™/) is a commonly used analytical biochemistry assay, first described by Engvall and Perlmann in 1971.[1] The assay uses a solid-phase enzyme immunoassay (EIA) to detect the presence of a ligand (commonly a protein) in a liquid sample using antibodies directed against the protein to be measured. ELISA has been used as a diagnostic tool in medicine, plant pathology, and biotechnology, as well as a quality control check in various industries.
In the most simple form of an ELISA, antigens from the sample are attached to a surface. Then, a matching antibody is applied over the surface so it can bind to the antigen. This antibody is linked to an enzyme, and in the final step, a substance containing the enzyme's substrate is added. The subsequent reaction produces a detectable signal, most commonly a color change.
Unimedsume Trading Co., Ltd , https://www.ums-labmed.com