Parasites are the most easily overlooked problem in pig farms and are also the most dangerous factor for pig farms. Adults compete with pigs for nutrients, larvae cause malabsorption of pigs, transitional larvae destroy pig's intestinal wall, liver tissue structure and physiological functions, induce pneumonia, enteritis, bloody diarrhea, dysentery, ulcers, anemia, etc. With an output value of 8%, the pig's growth rate is reduced by 10% to 12%, and the feed utilization rate is reduced by 12%. Therefore, the farm must do a good job of deworming, spring is a good time to focus on repelling the farm, we must seize the opportunity to carry out the deworming work to the end.
Parasites are divided into endoparasites and ectoparasites. Let's look at parasites first.
Internal parasites
Pigs compete for nutrition, feed utilization is reduced, pigs are extremely thin and gradually form stiff pigs.
Adults penetrate into the small bile ducts of the liver parenchyma, causing obstruction of the bile ducts, severe obstruction of the intestines, and rupture of the intestinal tract to allow leakage of intestinal contents, eventually leading to the death of pigs.
The migration of parasites significantly exacerbates the hazards of influenza, viral pneumonia, Rickettsia, blood-like diarrhea, and dysentery.
Ectoparasite damage
Pigs are irritated by parasitic or blood-sucking sites and produce a tickling sensation. Pigs constantly bite or itch and restless, causing friction on the object causing skin bleeding, scarring and peeling, and exudative dermatitis.
Transmission of various diseases such as Eperythrozoon, Mycoplasma, Chlamydia, Helicobacter and various bacteria, virus diseases, etc.
According to relevant data, parasites can delay the pig market for 8.6 days, reduce weaning weight by about 5 kilograms, increase the mortality rate of the pigs, and reduce the number of weaned pigs that produce sows by 1.5 pigs per year. The sows postpone estrus because of postpartum weight loss. .
treatment
In order to achieve the purpose of deworming and prevent drug poisoning, it should:
Rational selection of drugs. When selecting anthelmintic drugs, it is necessary to select broad-spectrum anthelmintic drugs with a wide range of insect repellent, high curative effect, and low toxicity according to the species of livestock and poultry, age, species of infected parasites, parasitic sites, etc., and economic considerations. value. As parasitic diseases of livestock and poultry are mostly mixed infections, multi-purpose broad-spectrum anthelmintic drugs are used for deworming, such as Weiyuan Jinyiwei or AiPuli.
Breeding animals carefully. During the pregnancy period, sows should not use toxic anthelmintic drugs. Boars can't affect sperm motility. We can use the national second class of new veterinary drugs, April, to fight insects without adverse effects on breeding stocks. It does not affect sows’ ovulation and does not affect boar sperm viability. .
At present, the more widely used anthelmintic drugs on the market are Weiyuan Jinyiwei, which has a wide spectrum of insect resistance and significant effects. It has become a specialized anthelmintic agent for large-scale pig farms, and it has the following advantages:
It is a new generation of avermectin, one of the most advanced anthelmintic drugs in the world. It has the advantages of broad spectrum, high efficiency, safety, and no cross-resistance. It can not only dispel internal parasites (nematodes, aphids, aphids). At the same time, it can also kill ectoparasites (fleas, cockroaches, and cockroaches); use safety for veterinary animals, dams, and livestock; low toxicity, low side effects, less residues of drugs in pigs, short residue time, and no pollution to the environment; The use of special carriers, no irritation to the stomach, after the use of this product without the addition of stomachic agent.
Deworming program: At present, the most scientific in the world is the “4+2†deworming model. The sow boars were driven four times a year and the finishing pigs were driven twice.
Weiyuan “4+2†usage and usage:
The sows were repelled once every 3 months for 7 days, ie four times a year; Weiyuan Jinyiwei had 500 kg per kg of spices.
After the weaning pigs were weaned 15 days after weaning, 30 kg to 40 kg were driven once more, once a day for 7 days, that is, they were driven twice a year; Weiyuan Jinyiwei had 1000 kg per kg of spices.
For the pig farms to obtain greater economic benefits, it is necessary to set off the climax of the spring fight against parasites in order to lay a stable foundation for the pigs throughout the year.
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