During the feeding restriction process of broiler breeders, feeding is often restricted on the first day, and after feeding on the second day, the crops of the chickens are hard and full, lying on the ground, tremors all over the body, and then head and neck weakness, mouth sticking to the ground, and legs. Stretching backwards and faeces are white, which can cause death of chickens in severe cases. On the surface, although the direct loss is not large, the indirect damage is relatively large. It can cause indigestion and slow weight gain of some chickens. In the long term, it will not only cause a decrease in uniformity, but also affect the performance of production.

　　一　Prone to satiety shock

Generally, broiler breeders are prone to occur in the late brooding period (4-6 weeks), when the flocks are first restricted to feed; in the early stage of rearing (6-12 weeks), in order to improve the uniformity, use "four, three" or "five, The first feeding day after the "two" feeding restriction method is most likely to occur, and the time of occurrence is often within 1 to 2 hours after feeding; in the late growing period (after 16 weeks), due to the beginning of the development of sexual organs, the restriction of feeding intensity changes Low, use "daily" or "six, one" feeding restriction, the daily feed amount is more, the occurrence of satiety shock is rare.

Chicken flocks with mechanical feeding systems have a fast feeding speed and are more likely to occur; larger chickens in the same house grab more feed and are more likely to occur. Smaller chickens are due to poor digestive system development. , Is also prone to occur; in addition, excessive feeding intensity, hot weather, immune stress, excessive density, nipple drinking system, etc., all conditions that can affect the amount of drinking water, are prone to satiety shock.

Symptoms after the occurrence of satiety shock

The chickens were in good condition before then, and there was no abnormal situation. Generally, it was 1 to 4 hours after the chickens had eaten the food, and the most common occurrence was within 1 to 2 hours. The chickens that had shock often showed the following: The wings were drooping, the mouth was shook, and the legs were stretched out. A few chickens lay on their sides, the crops were full and hard with their hands, and some chickens shivered all over, and some died due to serious illness. The necropsy showed that the crop was firm and full, the muscular stomach and the glandular stomach had very little material, the intestine was empty and there was nothing, and no significant lesions were seen in other important organs.