The Reasons and Measures for the Unsatisfactory Weight of Broiler Chicks during Brooding Period

In recent years, due to the high price of high-quality protein feeds such as fishmeal, soybean meal, and peanut meal, many feed manufacturers and farmers use cotton aphid, rapeseed meal, blood meal, feather meal, and dregs as feed ingredients when preparing chick diets. Reduce the amount of fishmeal and soybean meal (some do not even use fishmeal). The result is poor palatability of the diet and the non-digestibility of nutrients, which affects the growth and development of the chicks. According to the traditional nutrition standards to design formulas, the feed nutrient concentration is low, can not meet the nutritional needs of chicks, chicks grow slowly. Because: 1 different breeds of chicken, different nutritional needs. In the past, purebred chickens or common hybrid chickens were used to grow slowly, but now they are reared with high-yielding hybrid chickens, which have a fast growth rate and a higher nutritional requirement. 2 The currently prepared diet uses more non-conventional feed ingredients, and the nutrient use efficiency of the diet is reduced (eg, the true digestibility ratio of total essential amino acids of fishmeal is 87.5%, while only 89.6% of cottonseed meal is used. 3) The number of production processes such as transit and immunization increases, the stress response is serious, and it consumes more nutrients, and the amount of nutrients used for growth is relatively reduced.4 Traditional feeding standards have not improved the body's ability to obtain strong immunity and The resistance of diseases and the need for nutrition are only based on growth and productivity, so the traditional nutritional standards for chicks are low. Many small-scale feed mills and farmers have simple feed processing equipment, and lack the necessary testing equipment and laboratory equipment. The nutrient content of the feed ingredients used is not known, and according to the experience of blindly preparing the diet, the nutritional content of the produced chicks is not comprehensive.Unbalanced, not only affects the digestion and utilization of nutrients by chicks, but also increases the burden of digestion and metabolism of young chicks. , seriously affect the growth and development.1.2 poor feeding and management poor chicks eat too late, feeding a bad affect the young The growth of chickens can be maintained for several days without eating or drinking, but eating too much water late in the evening will seriously affect the chicks' learning to eat and drink, causing dehydration of the chicks.The chicks still have 7-8g of yolk left in the abdominal cavity to provide nutrition for the chicks. If it is possible to eat early and supply nutrients, such a double supply of nutrients is very beneficial to the growth and development of chicks, and the chicks will grow fast.If you eat late, feed poorly or feed less, the yolk of the abdomen will be depleted prematurely; The supply of nutrients is not sufficient, the growth rate is slow, the ambient temperature is not suitable, and the light is not uniform or too weak, inappropriate feeding utensils, etc. can also affect the chicks' feeding and drinking and affect the growth. Transplantation and multiple immunization procedures are strong sources of stress, causing severe stress reactions in the flock and affecting normal growth, such as reduced body weight in chicks 1 to 2 weeks after pupation. Group disease, but also affect the growth and development of chickens.2 measures 2.1 to ensure nutrient supply Chicks have small digestive tract, poor digestion, fast growth, must provide adequate nutrition, easy to digest The high-quality diets collected meet the nutritional needs and promote growth.When formulating diets for the brooding period, the nutrient standards recommended by the breeding farm should be used as the basis to maintain a high nutrient concentration. The use of fish meal, soybean meal, and peanut meal can be easily digested and absorbed. The high-quality raw materials are properly supplemented with artificially synthesized amino acids and enzyme preparations, and farmers can also purchase special materials for young chicks or pre-feeds for broiler chickens, and feed them with general chicks after 2 to 3 weeks of feeding, with good results. Management provides suitable temperature and light.The first week of brooding temperature requirements are: 1 to 2 days 35 °C ~ 36 °C, 3 ~ 4 days 34 °C ~ 35 °C, 5 ~ 7 days 33 °C ~ 34 °C, after the weekly reduction From 2°C to 3°C to room temperature, the light intensity in the first week of brooding is 20 lux (Lx), then is 8 to 10 Lx, the illumination time is 1 to 3 days and 23 hours, 4 to 7 days and 22 hours, and the light is reduced every week afterwards. 3 hours to the required number of hours of light, and the light should be uniform.Chicken timely drinking water for food, 24 hours after the shell can drink water to eat, generally should not exceed 48 hours. Open a flat food plate or a rough yellow paper for self-feeding. Add less feed and feed enough to ensure that each chicken eats well every time. 2.3 Relieving Stress Add anti-stress agents and nutrients to the water or feed during brooding to relieve stress and promote growth. 3 days before brooding, 4 grams of vitamin C (or 100 grams of instant multi-dimensional) and 3000 grams of white sugar are added per 100 kilograms of water to ease transport fatigue, increase calories, and increase resilience. Dissolve multidimensional (100 g/100 kg of water) in drinking water within 3 days before and after the interruption, transfer, and immunization. The vitamin K3 should be added to the material when it is broken to avoid bleeding. The material in the feed trough must reach a certain thickness after breaking the crucible to prevent the bottom of the trough from stimulating the gizzard pain and affecting feeding. 2.4 Do a good job in disease prevention and control Do a good job of isolating, sanitizing and disinfecting the brooding house, and keep the brooding house clean and hygienic. Do a good job in the prevention of chicken psoriasis and coccidiosis, and develop scientific immunization procedures based on the actual situation in the region and the chickens in the field to conduct accurate immunization and avoid diseases.

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