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CN-121970719-A - Broiler raising method based on nutrition regulation and environmental stress induction

CN121970719ACN 121970719 ACN121970719 ACN 121970719ACN-121970719-A

Abstract

The invention provides a broiler raising method based on nutrition regulation and environmental stress induction, which belongs to the technical field of livestock raising and comprises the steps of dividing raising period into four stages of 1-14 days old, 15-28 days old, 29-35 days old and 36-45 days old according to time, carrying out nutrition regulation and environmental induction on the four stages, feeding feed containing linseed meal and fish oil in the stage of 29-35 days old, adding choline and betaine, combining periodic mild cold stress treatment, promoting unsaturated fatty acid to deposit into muscles, carrying out 80% limited feeding in the stage of 36-45 days old, and simultaneously supplementing yeast extract, L-glutamine and flavor enhancer composed of betaine and allicin, thereby effectively improving the content of wind substances such as inosinic acid, glutamic acid and the like and obviously improving broiler flavor. Meanwhile, the method is matched with the functions of reducing the feeding density, adjusting the illumination, prolonging the free-range time and the like, so as to refine muscle fibers and reduce oxidative damage.

Inventors

  • ZHAO XUELI
  • Cheng Guanze
  • Fan Yuechen

Assignees

  • 河南春禾牧业有限公司

Dates

Publication Date
20260505
Application Date
20260323

Claims (7)

  1. 1. A broiler raising method based on nutrition regulation and environmental stress induction is characterized in that raising period is divided into four stages of 1-14 days old, 15-28 days old, 29-35 days old and 36-45 days old according to time, and the four stages are subjected to nutrition regulation and environmental induction: (1) 1-14 days old The feed comprises, by weight, 55 parts of corn, 25 parts of soybean meal, 5 parts of fish meal, 8 parts of whey powder and 7 parts of premix, and is free to eat; The temperature is gradually reduced according to the temperature of 32-35 ℃ for 1-3 days old, 28-30 ℃ for 4-7 days old and 25-27 ℃ for 8-14 days old, the relative humidity is 60-65%, the illumination period is 23L:1D, and the illumination intensity is 20lux; (2) 15-28 days old The feed comprises 60 parts of corn, 30 parts of soybean meal, 5 parts of fish meal, 3 parts of soybean oil, 1 part of bran and 2 parts of premix by weight, and is free to eat; The environment is that the temperature is 22-24 ℃, the relative humidity is 55-60%, the illumination period is 16L:8D, the illumination intensity is 10lux, and the daily free-range activity is carried out for 1h; (3) 29-35 days old The feed comprises 60 parts of corn, 20 parts of soybean meal, 11 parts of linseed meal, 4 parts of fish oil, 2 parts of soybean oil and 3 parts of premix according to weight, and is free to eat; The environment is that the basic temperature is 26 ℃, cold stress stimulus is applied during the period, the relative humidity is 55-60%, the illumination period is 16L:8D, and the daily free-range activity is carried out for 1.5h; (4) 36-45 days old The feed comprises, by weight, 70 parts of corn, 15 parts of soybean meal, 5 parts of corn gluten meal, 2.7 parts of yeast extract, 0.8 part of L-glutamine, 1.5 parts of soybean oil and 3 parts of premix, wherein 80% of free feeding is limited, and one-time flavor enhancer supplementary feeding is performed according to 1-2% of the limited feeding amount; The environment is that the temperature is 20-22 ℃, the relative humidity is 50-55%, the illumination period is 12L:12D, the illumination intensity is 5lux, and the daily free-ranging activity is 2 hours.
  2. 2. The method for raising broilers based on nutrition regulation and environmental stress induction according to claim 1, wherein the age of 1-14 days, chromium picolinate is added to the feed in an amount of 0.2-0.3 ppm.
  3. 3. The broiler raising method based on nutrition regulation and environmental stress induction of claim 1, wherein the feed is added with 100IU/kg vitamin E and 0.3ppm selenium at 15-28 days old.
  4. 4. The broiler raising method based on nutrient regulation and environmental stress induction of claim 1, wherein the feed is added with 1200-1500mg/kg choline, 1000-1100mg/kg betaine, 150-180IU/kg vitamin E and 0.35ppm selenium at 29-35 days old.
  5. 5. The method for raising broilers based on nutritional control and environmental stress induction according to claim 1, wherein the flavor enhancer comprises betaine and allicin in weight ratio of betaine to allicin=2:1 at 36-45 days old.
  6. 6. The method for raising broilers based on nutritional regulation and environmental stress induction according to claim 1, wherein the period of time is 29-35 days old, the cold stress stimulation comprises the step of performing periodic cold stress treatment at 18:00-22:00 ℃ to 18+ -1 ℃ every day, and the stress intensity is based on no shivering and binding of the flock of chickens.
  7. 7. The broiler raising method based on nutrition regulation and environmental stress induction according to claim 1, wherein the raising density is 25-30 pieces/m 2 at 1-14 days old, 20 pieces/m 2 at 15-28 days old, 15 pieces/m 2 at 29-35 days old and 12 pieces/m 2 at 36-45 days old.

Description

Broiler raising method based on nutrition regulation and environmental stress induction Technical Field The invention relates to the technical field of livestock breeding, in particular to a broiler raising method based on nutrition regulation and environmental stress induction. Background The core aim of the modern broiler breeding and raising technology is to increase the growth speed, the current main stream of fast large broiler chickens can realize 45-day-old slaughtering, but the prominent problem of meat quality reduction is generally existed, the problems are that the intramuscular fat (IMF) content is lower than 1%, the muscle fiber diameter is more than 50 mu m, and the accumulation of flavor substances (such as inosinic acid and glutamic acid) is insufficient, so that chicken taste and chicken smell are caused, and the requirement of consumers on high-quality flavor broiler chickens is difficult to meet. While the traditional slow-speed broiler variety has good meat quality, the intramuscular fat content can reach 2% or more, but the growth period is long, the cultivation cost is high, and the large-scale popularization is limited. Disclosure of Invention The invention aims to provide a broiler raising method based on nutrition regulation and environmental stress induction, so as to solve the problems in the background technology. In order to achieve the above purpose, the present invention provides the following technical solutions: A broiler raising method based on nutrition regulation and environmental stress induction divides raising period into four stages of 1-14 days old, 15-28 days old, 29-35 days old and 36-45 days old according to time, and carries out nutrition regulation and environmental induction on the four stages: (1) 1-14 days old The feed comprises, by weight, 55 parts of corn, 25 parts of soybean meal, 5 parts of fish meal, 8 parts of whey powder and 7 parts of premix, and is free to eat; The temperature is gradually reduced according to the temperature of 32-35 ℃ for 1-3 days old, 28-30 ℃ for 4-7 days old and 25-27 ℃ for 8-14 days old, the relative humidity is 60-65%, the illumination period is 23L:1D, and the illumination intensity is 20lux; (2) 15-28 days old The feed comprises 60 parts of corn, 30 parts of soybean meal, 5 parts of fish meal, 3 parts of soybean oil, 1 part of bran and 2 parts of premix by weight, and is free to eat; The environment is that the temperature is 22-24 ℃, the relative humidity is 55-60%, the illumination period is 16L:8D, the illumination intensity is 10lux, and the daily free-range activity is carried out for 1h; (3) 29-35 days old The feed comprises 60 parts of corn, 20 parts of soybean meal, 11 parts of linseed meal, 4 parts of fish oil, 2 parts of soybean oil and 3 parts of premix according to weight, and is free to eat; The environment is that the basic temperature is 26 ℃, cold stress stimulus is applied during the period, the relative humidity is 55-60%, the illumination period is 16L:8D, and the daily free-range activity is carried out for 1.5h; (4) 36-45 days old The feed comprises, by weight, 70 parts of corn, 15 parts of soybean meal, 5 parts of corn gluten meal, 2.7 parts of yeast extract, 0.8 part of L-glutamine, 1.5 parts of soybean oil and 3 parts of premix, wherein 80% of free feeding is limited, and one-time flavor enhancer supplementary feeding is performed according to 1-2% of the limited feeding amount; The environment is that the temperature is 20-22 ℃, the relative humidity is 50-55%, the illumination period is 12L:12D, the illumination intensity is 5lux, and the daily free-ranging activity is 2 hours. Preferably, the feed is added with 0.2-0.3ppm chromium picolinate at 1-14 days of age. The 1-14 days old is the basic development stage, the early stage of the development stage has the unripe digestive system and thermoregulation system of the broiler chickens, and the core is to construct a nutrition absorption foundation and a chicken development frame, so that the survival rate is ensured. The nutritional regulation and control adopts a high amino acid digestible formula, meets the synthesis requirement of muscle foundation, adds chromium picolinate to promote insulin sensitivity and promote nutrition absorption, and adopts gradient cooling to gradually adapt the chicks to the environmental temperature, so that the chicks are prevented from being stressed due to abrupt temperature change and weak physique. Preferably, the feed is supplemented with 100IU/kg vitamin E and 0.3ppm selenium at 15-28 days of age. The 15-28 days are the rapid growth period, the growth rate of the broiler chickens is accelerated in the stage, and excessive thickening of muscle fibers is avoided while the rapid growth of muscles and bones is ensured. The nutrition regulation adopts a high-protein high-energy formula, supplements enough lysine, methionine and the like, meets the requirements of rapid muscle synthesis, adds vitamin E and selenium, pr