Sorghum seedlings and corn seedlings contain hydrocyanic acid, which can cause hydrocyanic acid poisoning after ingestion. Leafy feeds and young green feed contain more nitrates. Under the action of rumen nitrifying bacteria, they can be converted into nitrites. If you eat too much, it can cause nitrite poisoning; Xiaobaicao root, poison celery, yangyanghua, and equisevila are poisonous plants. Sheep feed after eating can cause poisoning; pastures near cotton fields and orchards are easily Contamination of pesticides, sheep can cause pesticide poisoning after eating. All of these require great attention when grazing in the wild.
The moldy feed, sprouted potatoes, and sweetpotato, which causes black spot, cannot feed the sheep; the cottonseed cake and the rapeseed cake must be detoxified before they can be fed to the sheep, and the amount of feed must be limited; Do not grow oleander in the ring area to prevent the sheep from eating poisoning. The mulch film on the crop stalk should be removed. The rough part and roots of the straw should be cut off as much as possible. Do not feed in the autumn. Sheep, shredded as much as possible in rainy weather. Doing this well can prevent many diseases caused by feed factors.
Do a good job of drug prevention
Drug prevention is essential and can create a safety barrier for the healthy growth of the flock. Commonly used drugs mainly include sulfonamides (such as sulfamethoxazole, sulfamethazine, sulfonamides, etc.) and tetracyclines (such as chlortetracycline, oxytetracycline, tetracycline, etc.), which can be mixed in feed or mixed with drinking water. Sulfonamides The dosage is 0.1% to 0.2%, and the amount of tetracycline is 0.01% to 0.03%. Antibiotics can not be used for a long period of time to prevent drug resistance, cause poisoning reactions, or affect rumen physiology. Generally, they can be used for 5 to 7 days. Preventive medications are mainly selected when the climate changes, when there is an epidemic, and when the epidemic is prone to occur (such as tail-cracking, castration, before and after weaning).
Improve the quarantine system
The quarantine system for sheep needs to be improved. From production to sale, quarantine, quarantine, quarantine, smuggle and quarantine should be conducted. Only quarantine permits can enter the next link. Large-scale sheep-raising must earnestly do a good job of quarantine at the entrance and exit, and do not purchase goats, feed, and utensils from the epidemic areas, try to adopt a rearing system with self-breeding and self-breeding. Newly-acquired sheep must be isolated and observed for more than 1 month to ensure healthy rear Can enter the field area, before entering the site to carry out deworming, disinfection, vaccine replanting. It is necessary to strictly manage the system at ordinary times and to prohibit the entry of people who are not busy. All personnel and vehicles that must be admitted must be disinfected. Unprocessed cattle and sheep products cannot be brought into sheep farms.
Observe everyday behavior
Usually pay attention to the observation of the flock, careful inspection of suspicious sheep, timely pick abnormal signs. The main observations included posture, eyes, coat, feeding, rumination, feces, and urine. The main contents of the examination were mucosa, conjunctiva, tongue coating, odor, body temperature, pulse, and respiration. In addition, whether or not the sheep nose is moist is a key indicator of the health of the sheep and must not be ignored during observation or inspection. Healthy sheep have 3 physiological constants to keep in mind: body temperature is 38 ~ 40 °C, breathing 18 ~ 24 times per minute, pulse 70 ~ 80 times per minute, abnormalities should be found, should be promptly requested professional veterinary treatment.
Timely treatment of diseased sheep
Infectious diseases spread rapidly and cause serious damage. In the event of an outbreak, diseased sheep should be rapidly isolated to prevent the spread of the disease. All unsanitized objects in the isolation area cannot be transported. Sheep that have been in contact with diseased sheep are required to Observe in captivity alone. In the case of infectious diseases such as foot-and-mouth disease and goatpox, it is necessary to promptly report to the veterinary administrative agency, delimit the affected area, isolate the blockade, and put an end to the epidemic as soon as possible. Disease corpses can not be abandoned, eaten or entered the market, should be based on the nature of the disease, incineration or deep-buried and other harmless treatment measures.
Often said that the human body immunity is refers to the human form in the long-term evolution, the body is a series of bacteria, viruses, and on the outside invasion of a foreign body resistance ability, is not formed from a single organ or secretion, its composition is a system, including the skin, all kinds of fluid secretion and blood in all sorts of granulocytes and macrophages, constitute the body's defense system.
The main role has two points: first, for the external invasion of microorganisms, like bacteria, viruses, and all kinds of pathogens, can be identified and killed. Second, the necrotic cells produced by the body, such as precancerous cells and some aging cells that lose their functions, have an effective removal effect, so the function is very powerful, and it is the basic protection system against the normal health state of the body. This protection system has two kinds of reactions, specific and non-specific. There are nonspecific defenses that are called innate, for example, diseases that are never allowed, like some of the Marine diseases that are caused by some of the Marine microbes, but cannot naturally survive in the human body. There is also acquired specific immunity, which is through the body's continuous recognition and memory, and then targeted at identified bacteria and viruses to kill, maintain a good state of immunity, is the basic condition to maintain a healthy body, so if the immunity is low, you put yourself in a very dangerous state. Can not withstand the outside wind or the rapid multiplication of cancerous cells in the body.
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