How to prevent and deal with broiler stress?

The key to stress prevention is to reduce or moderate the stressor. When the inevitable stress is triggered, such as group transfer, feed change, immunization, and climate mutation, on the one hand, it is necessary to do everything possible to reduce the degree and duration of stress to avoid the occurrence of long-term stress; On the other hand, on the eve of the arousal, the chickens should be given a variety of vitamins and electrolytes by drinking water, and a certain amount of antibiotics can also be administered appropriately. Vitamin C is particularly effective in preventing heat stress.

There are two main categories of common diseases in broilers. One is non-communicable diseases, including dyspepsia, vitamin deficiency, selenium deficiency, etc.; The other category is infectious diseases, including colibacillosis, salmonellosis, fumigatillosis, staphylococcal disease, infectious bursal disease, chicken Newcastle disease, chicken infectious bronchitis, chicken coccidiosis, avian influenza, etc.

Non-communicable diseases are mostly caused by improper feeding management, such as improper feed mixing, improper temperature, and air discomfort. The occurrence of non-communicable diseases can be effectively controlled by strengthening feeding management, adjusting the nutritional formula of feed, and strengthening the technical training of breeders.

The epidemic of infectious diseases in broilers is a complex and contradictory process, which is caused by the interconnection of the source of infection, the transmission route and the susceptible chickens. Therefore, by formulating reasonable epidemic prevention measures such as immunization procedures, drug administration procedures and disinfection procedures, the interconnection of the three links that cause the epidemic can be eliminated or severed, and the epidemic will not occur or continue to spread. These measures should include comprehensive epidemic prevention measures with the four basic contents of "maintenance, prevention, inspection and treatment".

Comprehensive epidemic prevention measures can be divided into two aspects: ordinary preventive measures and extinguishing measures in the event of epidemics.

Drug prevention is an important auxiliary means of epidemic prevention in chicken farms, and scientific and reasonable prevention of drug delivery can avoid problems such as rising feeding costs, enhanced pathogen resistance, drug dependence of chickens and drug residues in meat products, so as to improve breeding efficiency. Therefore, the following points must be paid attention to when using drugs to prevent and control broiler diseases:

1) Grasp the timeliness of medication in the embryonic state, the initial stage of infection is usually effective, if there are obvious clinical symptoms or the formation of epidemic, the effect is often not good.

2) Pay attention to the accuracy of medication, use different drugs for different pathogens, the same pathogen in different regions or different farms its drug sensitivity is very different, should be based on the drug use effect tracking investigation analysis and drug susceptibility test to reasonably bring the start of the drug.

3) Strengthen the rationality of drug use, according to the characteristics of different days of onset, select more targeted drugs, according to the course of regular quantitative dosing, there should be a withdrawal period (drug withdrawal period), can not be continuous long-term dosing, there should be more than 10 days of drug withdrawal before slaughtering.

4) Pay attention to the safety of medication, pay attention to feeding the drug according to the prescribed dose, and do not increase the dosage of Queshan at will to prevent drug poisoning or drug residues. Drugs that are highly toxic and too strong should be used with caution, and attention should also be paid to compatibility and contraindications, and products produced by regular manufacturers should be selected as much as possible.

5) The economy of drug use should be considered as the basis for the selection of drugs. In the case of the same preventive effect, it is advisable to choose the most inexpensive and no other disadvantages, and the more expensive the better.

Chickens are susceptible to heat stress and reduced feed intake in high temperature environments.

Replacing 1% corn with 1% oil in a high temperature environment has a lower energy requirement and a corresponding reduction in feed intake. Therefore, the energy structure of the feed should be adjusted. In order to improve the feed intake of chickens, some fat can be added to the feed, fat can improve the palatability of the feed, the feed intake of chickens is greatly improved, and the utilization rate of nutrients can be improved, such as feeding 1% animal and vegetable oil instead of 1% corn.

Lower the protein level because the chicken's demand for protein and amino acids has nothing to do with the environment, the protein demand of chickens will not change, however, when the climate rises to 30, the feed intake of chickens will decrease, and the protein level should be increased. Too much protein or amino acids, the oxidation of which produces heat. Maintaining the correct amino acid levels in the diet can reduce the incidence of fatty liver disease and reduce mortality.

Appropriately increasing the proportion of calcium and phosphorus inhibits calcium intake and vitamin conversion at high temperature, so the calcium demand of laying hens will increase in a high temperature environment. However, a diet high in calcium can reduce palatability, which can lead to a decrease in feed intake in chickens, and the premix should be increased appropriately with changes in expected feed intake to maintain a daily intake of calcium in Tak and available phosphograms.

When applying other additives under heat stress, 150 grams of vitamin C should be added per 1000 kg of feed, and chickens need a large amount of vitamins to improve disease resistance when dissipating heat in a state of heat stress. In poultry feed, the addition of Huoxiang, honeysuckle, radix radix, Atractylodes atractylodes and gentian herbs in the proportion of 1 can increase the egg production rate of laying hens in the high temperature season and increase the feed remuneration.

In intensive high-density production, high temperature and heat stress in summer seriously endanger the broiler breeding industry and cause serious losses to farmers. The results show that the suitable survival temperature range of chickens is 10-32, and the suitable production temperature is 21-26, and broilers can play the best production performance. 26-32 can still maintain normal body temperature, and higher than this value will lead to the physiological function of broilers, and the body will produce a variety of non-specific responses, which we call heat stress. Behavioral characteristics such as rapid breathing and loose feathers usually occur.

At this time, the body will produce a large number of free radicals, the immunity will be destroyed, the feed intake will be reduced, the weight will be reduced, and the body's reserve energy will be depleted, which will not only affect the production performance, but also cause disease and death. For example, it is easy to provoke respiratory diseases, ulcerative enteritis, etc., and is susceptible to the invasion of staphylococcus and E. coli, and the susceptibility to Newcastle disease and infectious bronchitis increases, which aggravates the losses caused by death. To alleviate the heat stress of broilers, in addition to improving the feeding environment, scavenging free radicals and improving the body's immunity can clear the source.

Eucommia ulmoides leaf extract (Longchang Happiness 100) - scavenging free radicals and improving immunity Main ingredients:

Chlorogenic acid--- natural biological antioxidant, scavenging free radicals, broad-spectrum antibacterial and antiviral Eucommia ulmoides polysaccharides -- intestinal beneficial bacteria intake, maintaining intestinal health Eucommia ulmoides flavonoids -- phytoestrogens, improving the body's immune function: scavenging free radicals, effectively solving the body's various functional disorders caused by heat stress, enhancing immunity, reducing morbidity, and speeding up the recovery of diseases.

Clear heat and detoxify, effectively prevent and control virus infection.