A complete list of health care methods for laying hens

It is very effective to do some health care regularly in the process of breeding laying hens. This method can effectively improve the production performance of laying hens and ensure stable production of laying hens. Common health care methods are as follows:

???? 1. Factors Affecting the Benefit of Laying Hens

Under the premise of consistent laying hen varieties and feed raw material prices, the most important index affecting laying hen breeding efficiency is laying cycle, followed by feed to egg ratio, feed unit price, laying rate, egg weight and death rate. Of course, these indexes are not completely isolated, but interrelated. The effective way to improve the breeding benefit of laying hens is to prolong the laying cycle, and to design reasonable metabolic energy level of diet to reduce the feed/egg ratio and control the feed unit price.

Excluding infectious diseases and feed nutrition factors, the causes of egg production decline were ovarian hypofunction, ovarian inflammation and fatty liver. Ovarian function is mainly regulated and controlled by pituitary gland. Pituitarism is a nervous tissue with vigorous metabolism, rich in unsaturated fatty acids and easy to be oxidized and degraded. Therefore, certain measures should be taken to protect the pituitary gland and improve its function to slow down the degeneration of the pituitary gland.

???? 2. Key health interventions

2.1 Do a good job in basic immunity and improve specific disease resistance

Establish reasonable immunization program, through vaccination, so that layers produce effective antibodies, improve immunity, enhance the body's specific disease resistance. One is scientific immunity. According to the breed, breeding environment, season and local epidemic situation of laying hens, formulate reasonable immunization program; at the same time, select appropriate vaccine according to local epidemic strain. The second is to prevent key diseases. Newcastle disease should be the focus of immunization to prevent the occurrence of typical or atypical Newcastle disease. According to relevant studies, laying hens in the peak period of egg production, chicken Newcastle disease antibody level of more than 29, can effectively prevent the decline in egg production caused by Newcastle disease. Third, do a good job of antibody monitoring. Antibody detection shall be carried out regularly, and the chickens whose detection results do not meet the standards shall be supplemented and immunized in time.

2.2 Improve non-specific immunity and reduce environmental stress. Once chickens encounter adverse environmental conditions, they are prone to stress reactions. Stress reaction can reduce the growth rate of laying hens, affect the immune effect of vaccines, and enhance the susceptibility of laying hens to respiratory and digestive tract diseases. In order to reduce the stress response of chickens, the following measures can be taken: First, the use of immune enhancers. At present, there are many kinds of immune enhancers used in the market, such as oligosaccharides, laying hens life treasure, Astragalus polysaccharides, vitamin C, β-glucan, levamisole and so on. Immunopotentiators can improve the immune function of laying hens directly or indirectly through many ways. The second is to do a good job of stress domestication. Low-intensity stress stimulation was carried out on chickens in different growth stages in a planned way, and they were exposed to the original environment as much as possible to improve the non-specific immunity of the body. Third, establish a reasonable nutrition supply system. According to different periods, different growth stages and different environmental conditions, it is the premise to ensure that chickens are in a healthy state to provide appropriate and sufficient nutrients such as energy, amino acids, vitamins and trace elements.

2.3 To strengthen feeding management and reduce the incidence of laying hens health care must focus on the laying period, because this period is the most important stage for laying hens to obtain good economic benefits, and it is also the period when laying hens are prone to disease. Egg chickens, especially high-yield laying hens, lay more eggs and are difficult to supplement nutrients. Once the management is not in place, abnormal conditions are easy to occur. To ensure the health of laying hens, the following measures can be taken:

One is to eliminate the reproductive stress syndrome of high-yielding laying hens. While using complete laying hen feed, additives such as laying hen life treasure and Balmer can be added to improve the disease resistance of chickens; at the same time, feeding management should be strengthened to improve the air environment in the house and reduce the concentration of harmful gases, so that chickens are in a good production environment.

The second is to reduce the incidence of fatty liver. Fatty liver is not. It can only reduce the production performance of laying hens in the middle and late stages of laying, and is also the main factor causing death and scouring. Fatty liver of different degrees is common in laying hens in the middle and late stages of laying. The reason should be related to the unique protein metabolism mechanism of laying hens. To reduce the occurrence of fatty liver can promote the catabolism of fatty acids on the one hand, because if the fatty acid concentration increases, it will increase the synthesis of fat; on the other hand, promote the utilization and transport of fat, and select suitable additives to make the body produce enough effective lecithin, because lecithin is the carrier of fat transport in the body.

2.4 Eliminate the influence of mycotoxin in feed and stimulate the production potential of the body. The mold and its toxins in feed are harmful to poultry production, especially aflatoxin, zearalenone, T-2 toxin in moldy corn. For chickens with obvious clinical symptoms, it is easy to find. However, many subclinical levels of feed mycotoxins can slowly damage the immune system of laying hens, leading to a decline in disease resistance of chickens, and then induce various diseases (such as diarrhea, respiratory diseases, etc.); it can also lead to a slow decline in egg production rate of chickens, reduce egg weight, and inhibit the laying potential of laying hens. Therefore, in the production process, feed preservation should be done well, and moldy feed is strictly prohibited.