1.common high incidence in small sheep farms

Small sheep farms to focus on the prevention of viral disease is “Foot-and-mouth disease, small ruminant animal disease, sheep pox, sheep contagious Impetigo, viral influenza”; Bacterial diseases are mainly “Sheep Colibacillosis, pasteurellosis, streptococcosis; bacteroid diseases are mainly sheep contagious pleuropneumonia (pathogenic: Mycoplasma, also known as Mycoplasma) ; parasitic diseases are mainly “Intestinal helminthiasis, body surface sarcoptic acariasis, coccidiosis”. In addition there are Micronutrient deficiency syndrome, adverse stress syndrome, poisoning, and so on.

2.Prevention and Control Strategy

We will standardize the construction of epidemic prevention facilities in small-scale sheep farms, carry out regular training on epidemic prevention knowledge for staff, and strengthen the overall ability to prevent and control epidemic diseases.

2.1 viral disease

Generally speaking, the high incidence of viral disease occurs in the season of high temperature fluctuation, especially when the temperature in the small breeding environment is less than 10 °c, the temperature fluctuation between day and night is more than 7 °C and the wind speed is high. From the point of view of etiology, “Low temperature (negative temperature) + High Pollution index + adverse stress factor”is the external condition of virus survival. Therefore, the primary disease of animals under cold weather and cold stress is mainly viral disease.

Prevention and Control Strategy: under the weather conditions of rain, Snow, wind and significant cooling, the necessary preventive measures should be taken, the broken doors and windows should be repaired and the air inlets should be blocked, so as to prevent the thief wind from passing through the shed and the high-speed cold wind blowing directly on the sheep, close doors and windows to keep warm in extremely cold weather; vaccinations against several high-risk diseases, such as foot-and-mouth disease, small ruminant animal disease and sheep pox disease, etc. , the sheep can be protected by passive immune antibody by timely vaccination, and people and other animals suspected of catching a cold should be prohibited from close contact with the sheep Long-term maintenance of sheep farm (shed, pen) clean, dry, ventilation, adequate daylight living environment conditions, regular disinfection work to eliminate the source, the pathogenic factors in the environment to reduce the content of * * ; Anti-virus powder (including astragalus polysaccharides, Radix Isatidis, folium Isatidis, vitamins, immunopotentiator, etc.) was fed with 0.2% ~ 0.5% mixture, one dose in the morning and one dose in the evening, and Fed for 3 ~ 7 days. Attention should be paid to one or two major animal diseases stipulated by countries such as “Foot-and-mouth disease, small ruminant animal disease and sheep pox disease”. Once diagnosed, drug treatment (which is illegal) should be prohibited, in accordance with the relevant regulations of the State, blockade, isolation, culling, disinfection and harmless disposal shall be carried out, the authors recommend that the current broad-spectrum and effective prescription should be mixed intramuscular injection of “Compound long-acting sulfanilamide injection [0.2ー0.4 mL/(kg body weight) + Astragalus polysaccharide injection 0.2 mL/(kg body weight)”or “Cephalosporin 0.1 g/(kg body weight) + Astragalus polysaccharide injection 0.2 mL/(kg body weight) + VC injection (5ー10 ML)”, 1 DOSE/D, 3d.

2.2 bacterial and bacteriogenic diseases

In practice, bacterial and bacteriogenic diseases occur more frequently under the conditions of “High temperature, high humidity and pollution”, mainly because of the biological characteristics of pathogens, because “High temperature and high humidity + pollution (organic carrier)”is conducive to bacteria, bacteria-like proliferation of the external environment conditions. Prevention and Control Strategy: to ensure that the current feed water and feed is not contaminated is the key, to properly preserve and use feed, to ensure that all links are not contaminated by rodents, bacteria-carrying animals and other pathogens spread; Cleaning and disinfection is an effective preventive and control measure. Organic matter carriers such as manure and spoiled bedding in pens should be removed in time, followed by disinfection and disposal of the source and, if necessary, disinfection with livestock, the content of pathogen in the environment should be controlled within the safe range as far as possible, relevant vaccines can be considered in mature sheep farms, and lamb dysentery vaccine can be injected to prevent sheep colibacillosis 20 ~ 30 days before the birth of Ewes, prevention of Sheep pasteurellosis * * Good vaccination healthy sheep are vaccinated with 2 Ml/sheep, healthy sheep with 3 mL/sheep subcutaneously with Aluminum hydroxide formaldehyde vaccine for the prevention of sheep streptococcosis, 2-3 month-old lambs should be immunized once more after 15 days of inoculation, and the whole flock of drugs should be used to prevent and cure the disease, only suckling lambs (ruminating for the establishment) can be appropriately treated with oral antibiotics; For the treatment of severe hunger strike * * The prescription was “Ampicillin sodium or Ceftiofur sodium 0.1 g/(kg body weight) + Shuanghuanglian injection 0.2 mL/(kg body weight) + Houttuynia cordata injection 0.1 mL/(kg body weight)”mixed intramuscular injection, 1 DOSE/DAY, 3 ~ 5 days.

2.3 parasitic diseases

Sheep parasitosis can occur in four seasons due to “Non-separation of livestock and Dung”, excessive pollution of the environment and high-frequency exposure of sheep. In order to save money, small-scale sheep farms are usually built simply because of poor conditions. There is no building-type pen for separating livestock and Dung. Prevention and Control Strategy: timely or regular deworming, small sheep farms in general in Spring and autumn at least 1 times each deworming, deworming * * Broad-spectrum High-effective Avermectin or Ivermectin (high purity) , mixing material internal, according to drug use instructions to feed 2 ~ 3 doses; Building-type sheep houses in small sheep farms where conditions allow the sheep to live on the floor above 1.2 m from the floor of the sheep houses. Minimizing contact with ground pollutants is effective in preventing parasitic diseases Carry out regular cleaning and disinfection of the small environment and utensils in the sheep house, and dispose the Dung, urine and bedding materials in the Sheep House through the accumulation and fermentation, etc. , the effect of oral antiparasitic preparation is often not good for sheep with acariasis. It is better to take orally sensitive anthelmintic agent and body surface medicated bath (using mifepristone) , and the effect of subcutaneous injection of Avermectin is better.