1 Harm of parasites

01 Eat more and don’t gain fat.

Domestic animals eat a lot, but they can’t get fat without gaining fat. This is because in the process of survival and reproduction of parasites in the body, on the one hand, they plunder a large amount of nutrients from domestic animals for their own needs, on the other hand, they destroy livestock tissues and organs, causing mechanical damage and inflammation. Its metabolites and endotoxin can poison the body, which will lead to abnormal digestion, absorption and metabolic functions of cattle and sheep, resulting in slow growth, weight loss, decreased nutrient absorption rate and reduced feed reward.

02 The daily gain of calves is less and the mortality is higher

For example, hemorrhagic enteritis caused by Eimeria, depression, anorexia, hypoproteinemia, anemia, severe diarrhea or alternating occurrence of constipation and dysentery caused by severe infection of gastrointestinal nematodes can increase the mortality of calves.

03 disseminate infection

As a pathogen, parasites can cause diseases and have synergistic effects with other pathogenic microorganisms. Because they can cause skin and mucosal damage in the process of life and create conditions for bacterial and viral infection, they can spread other diseases. The most common clinical diseases are blood parasitic diseases caused by blood sucking insects, mosquitoes, gadflies and ticks, such as pyrococcosis, trypanosomiasis, bovine epidemic fever, bluetongue and other viral infectious diseases.

2 Scientific control methods of common parasitic diseases in cattle and sheep

01 Eliminate the source of infection

——Livestock with insects, muscles and organs infected with pathogens, feces and other pollutants.

“Expelling insects before they mature”: prevent sexually mature adults from expelling eggs or larvae from polluting the environment – expelling insects in spring and autumn.

The muscles and organs infected with pathogens should not be discarded, but should be buried and burned to prevent the disease from being transmitted after being eaten by dogs or other animals.

Strengthen feeding management and keep the environment of enclosure and playground clean and hygienic. Clean and disinfect the site carefully, eliminate the intermediate host, and pay attention to the sanitation of feed and drinking water to avoid the pollution of feed and drinking water by insect eggs.

02 Cut off the route of transmission

Kill pathogens in the external environment, such as fecal accumulation and fermentation, use biological heat to kill insect eggs or larvae, and regularly monitor parasitic eggs in feces if possible. Another example is the routine disinfection of body surface parasites in cattle pens.

Control or eliminate intermediate hosts or vectors of various parasites.

03 Improve the physique and disease resistance of cattle and sheep

Provide a clean and comfortable living environment and increase disease resistance. Do a good job in the feeding and management of livestock, reduce stress, ensure the balanced full price of feed ratio, so that cattle and sheep can obtain enough amino acids, vitamins and minerals, and improve the resistance of livestock to parasitic diseases.

04 Anthelmintic time

Generally, the whole group carries out insect repellent twice a year in spring and autumn. Spring is from March to April to prevent parasite climax in spring; In autumn, it is common to expel insects once again from September to October, so as to help cattle and sheep catch fat and survive the winter safely. In areas with serious parasitic diseases, an additional insect repellent can be added from June to July in summer.

Most insect repellents need to be used twice as a course of treatment. According to the infection law of parasites, the eggs have secondary infection, so they need to be driven for a second time. For the first time, cattle and sheep are mostly sexually mature adults. After being killed by drugs, they excrete a large number of eggs. Most of the time, the eggs are not killed, but excreted with feces (most insect repellent drugs are ineffective for eggs). No matter how well the environment is cleaned, it will still lead to secondary infection, that is, the eggs re-enter the sheep through the skin and mouth. Therefore, it is necessary to expel the insects again within 7 to – 10 days.