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Thursday, March 28, 2013
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Wildlife and nature conservation, animal in world

Wildlife and nature conservation, animal in world 
Wildlife and nature conservation, animal in world 

Reserves have a very long time. At the dawn of the history of human society existed "sacred" places where hunting is banned, fish catching and logging where animals, birds and fish could safely withdraw offspring. In those days, when hunting and fishing were the most important, and often the only source human existence, from the conservation of protected sites intact well-being depended on, and sometimes just life.
Later, in the era of feudalism, the preserves largely lost its original meaning. In most countries in Europe, Asia and Africa, they have to serve the interests of the rulers or of the church and began to reserves, which protected only certain types of animals. There were many sanctuaries in ancient India, China and Egypt. In the Middle Ages in our country were "custom location "- Bialowieza Forest, where bison protected, and" Seven Islands "in the Murmansk coast, where the protected nesting hunting falcons for the royal hunt.
With the development of capitalism grew indiscriminate deforestation, animals, birds,fish - all natural resources that could bring money. Especially savagely exterminated them in the conquered countries and colonies. Yes, with unprecedented brutality colonizers destroyed the bison in America, elephants, rhinos and antelope in Africa and Asia. One hundred years ago disappeared most forests in Europe were exterminated many species of large animals and birds. This general impoverishment of nature has alarmed scientists, progressive community and government leaders. The emerging movement for the protection of nature. To keep animals in many countries were organized reserves.
One of the first among them was Yellowstone National Park in North America (1872). Behind him were the national parks in Europe, hunting reserves in Asia and Africa, reserves in Russia. Organization of protected areas affect the interests of private landowners, because it was carried out with great difficulty. In Tsarist Russia before the revolution was only a few reserves, mostly private. In capitalist countries, this reason makes their organization now. Often reserves owned by private individuals, companies 
Antelopes in the reserve Vars-Kelmes (Kazakh SSR), Wildlife and nature conservation, animal in world  
Saturday, March 2, 2013
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Common symptoms of arthropods

Common symptoms of arthropods
Common symptoms of arthropods

Common symptoms of arthropods (Arthropoda) - limb, consisting of several segments. Their body is also divided into segments and covered with a strong shell of chitin and calcium carbonate. 

Arthropods

ancient animal. The most reliable data on which to judge the origin of certain groups of animals, provide research resources fossils of organisms or their impressions. From Cambrian sediments known crustaceans, some of them are modern troops from the Silurian period known relatives Xiphosura and even scorpions in the Devonian sediments were found remains nohohvostok. Type arthropods includes 13 classes, among which the most well known: Crustaceans (Crustacea) Merostomovye (Merostomata) Arachnids or arachnids (Arachnida). In crustacean body is divided into head, thorax and abdomen.However, this division has various options. For example, biologists distinguish zhabronohyh, copepods, usonohyh and higher crustaceans.

Merostomovye

very ancient marine animals. Present there are only five species. They semicircular tops and long, sharp tail needle (hence their other name - Xiphosura). In the shell are five pairs of walking legs, followed by the gills.
In arachnids body divided into cephalothorax and abdomen. They have four pairs of legs that grow from the cephalothorax. Instead of the typical insect facet eye to eye built as simple points and record only the movement and the difference in illumination. Spiders live mostly on land. Biologists distinguish scorpions, spiders, mites and hay.

Myriapoda

His nadklas have centipedes (Myriapoda). In these animals several segments merged and formed the head capsule. It connected elongated, divided into segments body. Some centipedes are interconnected segments, each provided with a pair of limbs. In other centipedes segments fused in pairs, every segment marked these sit two pairs of legs.
Friday, March 1, 2013
General measures to prevent domestic non-communicable diseases

General measures to prevent domestic non-communicable diseases

General measures to prevent domestic non-communicable diseases
General measures to prevent domestic non-communicable diseases

The basis of prevention of domestic non-communicable diseases are a full feeding, optimal indoor climate, systematic exercise, rational use of chemical and microbiological synthesis, timely monitoring of metabolism and animal health.
Nutritious feeding involves a diet that would ensure the animals in need of energy, major nutrients and biologically active substances.
Many diseases associated with insufficient or excess energy, protein, mineral and vitamin nutrition. The higher productivity of animals, the greater should be the concentration of energy per 1 kg of dry matter intake. Lack of power supply leads to poor absorption of food substances, reproductive disorders, development of malnutrition, reducing the natural resistance of the organism. To eliminate energy deficit in the diets of animals injected cereal concentrates, roots, potatoes, fats of animal and vegetable origin.
Excessive energy food leads to obesity, diabetes, cardiovascular diseases and other pathologies.With a lack or excess of protein or amino acid composition of inferiority by declining productivity and reproductive function, disturbed metabolism and osteodystrophy develops dystrophy, reduced milk yield (hypogalactition) appear immune disorders, reduced natural resistance, is born defective offspring, increasing incidence ( diarrhea, pneumonia, gastritis, etc.) animals.Eliminate protein deficiency by typing in rations vysokoproteynovyh forage: grain legumes, meal, feed, hay legumes, meat, meat-and-bone or fish meal.

General measures to prevent domestic non-communicable diseases

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