Pigs with different sources and weights are bred in groups and often bite and attack each other, affecting the health and weight gain of pigs. Therefore, according to the physiological characteristics of pigs, rational grouping, maintaining a suitable breeding density, adopting an effective swarm approach, and making full use of the equipment in the enclosure, arranging a good environment for the growth and development of pigs is conducive to raising pig-raising efficiency. 1. Principles of grouping Pigs of similar origin, body weight, body condition, temperament, and feed intake are bred in groups to be managed in groups and fed in separate tanks so as to ensure the normal growth and development of pigs. The weight difference in the same group of pigs should not be too large or too small. Pigs should not exceed 3 to 5 kg, and shelf pigs should not exceed 5 to 10 kg. After grouping, it should be relatively stable. Generally, it should not be arbitrarily changed. 2. Appropriate Density Generally, each continuous piglet accounted for 0.7 square meters in the fence area and 1.2 square meters for each finishing pig. Each group is suitable for 10 to 15 heads. In winter, the stocking density can be appropriately increased and the stocking density can be appropriately reduced in summer. 3. The key to the group-parallel approach is to avoid biting each other at the beginning of the group. According to the biological characteristics of pigs, methods can be used: (1) Weakness does not stay strong: the weaker pigs remain in the original circle, and the stronger pigs are called out. (2) Do not dismantle and remove less: keep the pigs less and stay in the original circle, and merge the number of heads into the pigs with few heads. (3) The night is not accompanied by: The same group of pigs are sprayed with the same drug, such as sprinkling semen, so that the smell of each other is not easy to distinguish, grouping at night. (4) Coherent New Column: The number of pigs in the two groups is equal, and their strengths and weaknesses are equal, and the group has the same tune to the new pigsty. (5) After the first-maturity, the two groups of pigs should be kept together in a larger playground, and then grouped together for 3-7 days. (6) Scavenging and hunger: The pigs are split in groups when they are hungry, and they are fed immediately after the group is hungry. 4. Strengthen the management and clean up the sheds and strictly sterilize the sheds. In the first few days after the gregarious period, we must strengthen feeding and management, and if we find biting or fighting, we must immediately stop and protect the bitten pigs until they are safe and in peace.
Antiparasitics are a class of medications which are indicated for the treatment of parasitic diseases such as nematodes, cestodes, trematodes, infectious protozoa, and amoebas.
Antiparasitic drugs are used to inhibit, kill or expel parasites in and out of animals. Most of the ancient antiparasitic drugs originated from natural plants and animals. Most of them have been eliminated because of their weak antiparasitic effect or high toxicity. The progress of modern science and technology has accelerated the development of pharmaceutical industry, and the variety and quality of antiparasitic drugs are increasing. At present, a large number of new, efficient, broad-spectrum and adaptive antiparasitic drugs have been developed. Antiparasitic drugs are usually divided into Anti helminth drugs, insecticidal drugs and antigenic drugs. According to the species of helminths parasitic on livestock, anti helminth drugs can be divided into nematicides, tapeworms and trematodes. At present, the commonly used antiparasitic drugs are: 1) nematicides: levamisole, tetraimidazole, thibendazole, mebendazole, thiadiazine (Kangchongling), tetrachloroethylene, ivermectin, etc; ② Anti tapeworm drugs: praziquantel, niclosamide (miezaoling), dichlorophenol, areca, etc; ③ Anti filariasis drugs: thioarsenamine sodium, iodothiazide, dichlorophenylarsine and Di, antimonol, etc; ④ Fluke repellents: Nitrazine, Nitrazine, hexachloro-p-xylene, praziquantel, etc; ⑤ Antigenic agents: chlorphenamidine, aminopropyl, benzoquinoline, shachongling nitrobenzamide (Qiuliling), etc; ⑥ Insecticides: trichlorfon, fenthion, phoxim, oxyphos, dimethamidine, etc.
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North Africa Egypt, Libya, Tunisia, Morocco, Algeria.
East Africa is Ethiopia, Somalia, Kenya, Tanzania, Uganda, Burundi, Rwanda and Seychelles.
West Africa usually includes Mauritania, Senegal, Gambia, Mali, Burkina Faso, Guinea, Guinea Bissau, Cape Verde, Sierra Leone, Liberia, C ô te d'Ivoire, Ghana, Togo, Benin, Niger, Nigeria, etc.
South Africa is South Africa, including Zambia, Malawi, Zimbabwe, Botswana, Swaziland, Lesotho, Mozambique, Republic of South Africa, Namibia, Madagascar, Comoros, Mauritius, Reunion Island, France, St. Helena and ascension.
Central Africa includes the Central African Republic, Chad, Cameroon, Equatorial Guinea, Gabon, the Republic of Congo, the Democratic Republic of Congo, Sao Tome and Principe.
Central Asia refers to the inland region of Central Asia: Kazakhstan, Uzbekistan, Kyrgyzstan, Turkmenistan, Tajikistan and Afghanistan.
Southeast Asia: Myanmar, Thailand, Cambodia, Laos, Vietnam, Philippines, Malaysia, Singapore, Brunei, Indonesia and Timor Leste.
Countries and regions in West Asia include Saudi Arabia, Iran, Iraq, Kuwait, UAE, Oman, Qatar, Bahrain, Turkey, Israel, Palestine, Syria, Lebanon, Jordan, Yemen, Cyprus, Georgia, Armenia and Azerbaijan.
North African countries and regions include Egypt, Libya, Tunisia, Algeria, Morocco, Madeira Islands, Azores Islands and Western Sahara.