Laying hen breeding method for improving eggshell quality

Abstract

The invention discloses a laying hen breeding method for improving eggshell quality. The invention discloses a laying hen breeding method for improving eggshell quality. The laying hen breeding method comprises the following steps: 1, selecting an address meeting conditions to establish a henhouse; 2, selecting a proper laying hen variety; 3, raising the laying hens, specifically including the following three steps: a, raising the laying hens in the growth period, controlling the temperature of a chicken house to be 22-24 DEG C, controlling the daily light receiving time of the chicks to be 16-20 h, controlling the humidity to be 50-60%, feeding the chicks with high-calcium formula feed A and additives, gradually increasing the dosage until the chicks are adult, and feeding the chicks with the additive; the dosage of the high-calcium formula feed A is not more than 75g per chick every day, and the dosage of the additive is not more than 5g per chick. According to the laying hen breeding method capable of improving the egg shell quality, in each growth stage of the laying hens, the laying hens are fed with corresponding feed and feeding modes, the disease resistance of the laying hens can be improved, the survival rate of the laying hens can be further improved, the egg quality can be effectively improved, and the egg breakage rate can be reduced.

Description

Technical Field

[0001] The invention relates to the technical field of laying hen breeding, and in particular to a laying hen breeding method for improving eggshell quality. Background Art

[0002] In laying hen breeding and production, eggshell quality is the appearance trait and important economic trait of laying hen production. The decline of eggshell quality is a common and important problem in laying hen breeding. The high eggshell breakage rate will seriously affect the healthy development of the laying hen industry. When the egg breakage rate accounts for 6%-10% of the total output, it will cause economic losses to the poultry industry and egg processing industry. How to improve eggshell quality is an important problem that needs to be solved in laying hen production.

[0003] Eggshell quality is one of the important indicators for measuring egg quality. Calcium is the main component of eggshells. The body's absorption and utilization of calcium directly determines the formation and quality of eggshells. Laying hens need 3.5-3.8g of calcium per day. When the number of eggs cracking increases or they become pale, there is a problem with calcium absorption. You cannot just blindly add too much calcium to the feed. At present, common problems in laying hen production include: decreased production performance and deterioration of eggshell quality. Laying hens are sensitive by nature. Under stress, the amount of feed they eat decreases, and the amount of calcium and phosphorus they ingest also decreases significantly, affecting the brittleness and toughness of the eggshell. The activity of carbonic anhydrase in the uterus decreases, affecting the deposition of calcium in the eggshell.

[0004] Therefore, it is necessary to provide a laying hen breeding method for improving eggshell quality to solve the above-mentioned technical problems. Summary of the invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a laying hen breeding method for improving eggshell quality, which can improve egg quality and reduce egg breakage rate.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] The laying hen breeding method to improve eggshell quality includes the following steps:

[0008] 1. Choose a qualified address to build a chicken house. Choose a place with high terrain, sheltered from the wind, facing the sun, dry and flat, close to water sources, good drainage, and far away from noise as the address of the poultry house. The chicken raising area in the chicken house is paved with sandy loam with a thickness of 5-15cm and mixed with a certain amount of quicklime.

[0009] 2. Choose the right laying hen breed, one that is disease-resistant, produces a lot of eggs, and has good egg quality;

[0010] 3. The specific process of raising laying hens is divided into the following three steps:

[0011] a. For the feeding of laying hens in the growing stage, the temperature of the chicken house is controlled at a constant temperature of 22-24℃, the light exposure time of the chicks is controlled at 16-20h per day, the humidity is controlled at 50-60%, and the chicks are fed with high calcium formula feed A and additives, and the dosage is gradually increased until adulthood. The daily dosage of high calcium formula feed A for chicks is not more than 75g / chick, and the dosage of additives is not more than 5g / chick;

[0012] Step b, raising adult laying hens, the temperature of the chicken house is controlled at a constant temperature of 20-22° C., the daily light exposure time of the laying hens is controlled at 15-18 hours, the humidity is controlled at 50-55%, and the laying hens are fed with high calcium formula feed B and additives, and the dosage is gradually increased, the daily dosage of high calcium formula feed B for laying hens is not more than 105g / hen, and the dosage of additives is not more than 10g / hen;

[0013] Step c, raising laying hens during the laying period, controlling the temperature of the chicken house at a constant temperature of 15-17° C., controlling the daily light exposure time of the laying hens at 14-16 hours, controlling the humidity at 45-50%, feeding the laying hens with high calcium formula feed C and additives, wherein the daily dosage of high calcium formula feed C is not more than 95 g / hen, and the dosage of the additive is not more than 25 g / hen;

[0014] 4. Sanitation and epidemic prevention: chicken houses should be disinfected and ventilated regularly, laying hens should be vaccinated, dead laying hens should be burned, and laying hens in sick areas should be isolated in time.

[0015] Preferably, the high calcium formula feed A is composed of the following materials in the following mass ratio: 30-35 parts of corn, 30-32 parts of soybean meal, 1-2 parts of cottonseed meal, 1-3 parts of calcium bicarbonate, 0.2-0.3 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

[0016] Preferably, the high calcium formula feed B is composed of the following materials in the following mass ratio: 60-63 parts of corn, 2-3 parts of shrimp shells, 1-2 parts of kelp, 15-17 parts of soybean meal, 4-6 parts of rapeseed meal, 2-4 parts of cottonseed meal, 3-5 parts of calcium bicarbonate, 0.3-0.5 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

[0017] Preferably, high calcium formula feed C is composed of the following materials in the following mass ratio: 60-65 parts of corn, 40-50 parts of green vegetable leaves, 16-19 parts of soybean meal, 3-4 parts of cottonseed meal, 3-4 parts of wheat bran, 6-7 parts of shell powder, 0.4-0.5 parts of calcium salt, 6-7 parts of fish meal, 2-3 parts of bone meal, 0.1-0.2 parts of trace elements, 0.2-0.5 parts of Panax notoginseng, and 5-10 parts of motherwort.

[0018] Preferably, the additive is composed of the following materials in the following mass ratio: 5-8 parts of Rowewesol Hy.d, 100-200 parts of vitamin B, 100-200 parts of vitamin C, 2000-3000 parts of sodium bicarbonate, 20000-30000 parts of fine stone powder, and 30000-40000 parts of coarse stone powder.

[0019] Preferably, the fine stone powder is 30-40 mesh.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The present invention uses corresponding feed and feeding methods to feed laying hens at various growth stages, which can improve the disease resistance of laying hens, thereby improving the survival rate of laying hens, and can effectively improve the quality of eggs and reduce the egg breakage rate. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with embodiments, and the embodiments of the present invention include but are not limited to the following embodiments.

[0023] Embodiment 1:

[0024] The laying hen breeding method for improving eggshell quality provided by the present invention comprises the following steps:

[0025] 1. Choose a qualified address to build a chicken house. Choose a place with high terrain, sheltered from the wind, facing the sun, dry and flat, close to water sources, good drainage, and far away from noise as the address of the poultry house. The chicken raising area in the chicken house is paved with sandy loam with a thickness of 5-15cm and mixed with a certain amount of quicklime.

[0026] 2. Choose the right laying hen breed, one that is disease-resistant, produces a lot of eggs, and has good egg quality;

[0027] 3. The specific process of raising laying hens is divided into the following three steps:

[0028] a. For the feeding of laying hens in the growing stage, the initial temperature of the chicken house is controlled at 32-34℃, and then the temperature is lowered by 1℃ each week until the temperature is controlled at a constant temperature of 22-24℃. The light exposure time of the chicks in the first week is not less than 23h per day, and then it is reduced by 0.5h each week until the light exposure time is controlled at 16-20h per day. The humidity is controlled at 50-60%. The chicks are fed with high-calcium formula feed A and additives, and the dosage is gradually increased until they reach adulthood. The daily dosage of high-calcium formula feed A and additives for chicks is 75g / chicken, and the dosage of additives is 5g / chicken. Feeding is carried out throughout the day, and the chicks can be released to move around for 2-3h every day;

[0029] Step b, raising adult laying hens, the temperature of the chicken house is controlled at a constant temperature of 20-22° C., the daily light exposure time of the laying hens is controlled at 15-18 hours, the humidity is controlled at 50-55%, and the laying hens are fed with high-calcium formula feed B and additives, and the dosage is gradually increased. The daily dosage of high-calcium formula feed B for laying hens is 105g / hen, and the dosage of additives is 10g / hen. The laying hens are fed in a time-divided feeding method, and are fed 4-5 times a day;

[0030] Step c, raising laying hens in the laying period, controlling the temperature of the chicken house at a constant temperature of 15-17° C., controlling the light exposure time of the laying hens at 14-16 hours per day, controlling the humidity at 45-50%, feeding the laying hens with high calcium formula feed C and additives, wherein the daily dosage of high calcium formula feed C is 95 g / hen, and the dosage of the additive is 25 g / hen, and the feeding is carried out in a time-divided feeding manner, and the feeding is carried out 3-4 times a day;

[0031] 4. Sanitation and epidemic prevention: chicken houses should be disinfected and ventilated regularly, laying hens should be vaccinated, dead laying hens should be burned, and laying hens in sick areas should be isolated in time.

[0032] High calcium formula feed A is composed of the following materials in the following mass ratio: 30-35 parts of corn, 30-32 parts of soybean meal, 1-2 parts of cottonseed meal, 1-3 parts of calcium bicarbonate, 0.2-0.3 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

[0033] High calcium formula feed B is composed of the following materials in the following mass ratio: 60-63 parts of corn, 2-3 parts of shrimp shells, 1-2 parts of kelp, 15-17 parts of soybean meal, 4-6 parts of rapeseed meal, 2-4 parts of cottonseed meal, 3-5 parts of calcium bicarbonate, 0.3-0.5 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

[0034] High calcium formula feed C is composed of the following materials in the following mass proportions: 60-65 parts of corn, 40-50 parts of green vegetable leaves, 16-19 parts of soybean meal, 3-4 parts of cottonseed meal, 3-4 parts of wheat bran, 6-7 parts of shell powder, 0.4-0.5 parts of calcium salt, 6-7 parts of fish meal, 2-3 parts of bone meal, 0.1-0.2 parts of trace elements, 0.2-0.5 parts of Panax notoginseng, and 5-10 parts of motherwort.

[0035] The additive is composed of the following materials in the following mass proportions: 5-8 parts of Rowewesol Hy.d, 100-200 parts of vitamin B, 100-200 parts of vitamin C, 2000-3000 parts of sodium bicarbonate, 20000-30000 parts of 30-40 mesh fine stone powder, and 30000-40000 parts of coarse stone powder.

[0036] Embodiment 2:

[0037] The laying hen breeding method to improve eggshell quality includes the following steps:

[0038] 1. Choose a qualified address to build a chicken house. Choose a place with high terrain, sheltered from the wind, facing the sun, dry and flat, close to water sources, good drainage, and far away from noise as the address of the poultry house. The chicken raising area in the chicken house is paved with sandy loam with a thickness of 5-15cm and mixed with a certain amount of quicklime.

[0039] 2. Choose the right laying hen breed, one that is disease-resistant, produces a lot of eggs, and has good egg quality;

[0040] 3. The specific process of raising laying hens is divided into the following three steps:

[0041] a. For the feeding of laying hens in the growing stage, the initial temperature of the chicken house is controlled at 32-34℃, and then the temperature is lowered by 1℃ each week until the temperature is controlled at a constant temperature of 22-24℃. The light exposure time of the chicks in the first week is not less than 23h per day, and then it is reduced by 0.5h each week until the light exposure time is controlled at 16-20h per day. The humidity is controlled at 50-60%. The chicks are fed with high-calcium formula feed A and additives, and the dosage is gradually increased until adulthood. The daily dosage of high-calcium formula feed A for chicks is 75g / chicken, and the dosage of additives is 2g / chicken. Feeding is carried out throughout the day, and the chicks can be released to move around for 2-3h every day;

[0042] Step b, raising adult laying hens, the temperature of the chicken house is controlled at a constant temperature of 20-22° C., the daily light exposure time of the laying hens is controlled at 15-18 hours, the humidity is controlled at 50-55%, and the laying hens are fed with high-calcium formula feed B and additives, and the dosage is gradually increased. The daily dosage of high-calcium formula feed B for laying hens is 105g / hen, and the dosage of additives is 3g / hen. The laying hens are fed in a time-divided feeding method, and are fed 4-5 times a day;

[0043] Step c, raising laying hens in the laying period, controlling the temperature of the chicken house at a constant temperature of 15-17° C., controlling the daily light exposure time of the laying hens at 14-16 h, controlling the humidity at 45-50%, feeding the laying hens with high calcium formula feed C and additives, wherein the daily dosage of high calcium formula feed C is 95 g / hen, and the dosage of the additive is 5 g / hen, and the feeding is carried out in a time-divided feeding manner, and the feeding is carried out 3-4 times a day;

[0044] 4. Sanitation and epidemic prevention: chicken houses should be disinfected and ventilated regularly, laying hens should be vaccinated, dead laying hens should be burned, and laying hens in sick areas should be isolated in time.

[0045] High calcium formula feed A is composed of the following materials in the following mass ratio: 30-35 parts of corn, 30-32 parts of soybean meal, 1-2 parts of cottonseed meal, 1-3 parts of calcium bicarbonate, 0.2-0.3 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

[0046] High calcium formula feed B is composed of the following materials in the following mass ratio: 60-63 parts of corn, 2-3 parts of shrimp shells, 1-2 parts of kelp, 15-17 parts of soybean meal, 4-6 parts of rapeseed meal, 2-4 parts of cottonseed meal, 3-5 parts of calcium bicarbonate, 0.3-0.5 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

[0047] High calcium formula feed C is composed of the following materials in the following mass proportions: 60-65 parts of corn, 40-50 parts of green vegetable leaves, 16-19 parts of soybean meal, 3-4 parts of cottonseed meal, 3-4 parts of wheat bran, 6-7 parts of shell powder, 0.4-0.5 parts of calcium salt, 6-7 parts of fish meal, 2-3 parts of bone meal, 0.1-0.2 parts of trace elements, 0.2-0.5 parts of Panax notoginseng, and 5-10 parts of motherwort.

[0048] The additive is composed of the following materials in the following mass proportions: 5-8 parts of Rowewesol Hy.d, 100-200 parts of vitamin B, 100-200 parts of vitamin C, 2000-3000 parts of sodium bicarbonate, 20000-30000 parts of 30-40 mesh fine stone powder, and 30000-40000 parts of coarse stone powder.

[0049] Embodiment 3:

[0050] The laying hen breeding method to improve eggshell quality includes the following steps:

[0051] 1. Choose a qualified address to build a chicken house. Choose a place with high terrain, sheltered from the wind, facing the sun, dry and flat, close to water sources, good drainage, and far away from noise as the address of the poultry house. The chicken raising area in the chicken house is paved with sandy loam with a thickness of 5-15cm and mixed with a certain amount of quicklime.

[0052] 2. Choose the right laying hen breed, one that is disease-resistant, produces a lot of eggs, and has good egg quality;

[0053] 3. The specific process of raising laying hens is divided into the following three steps:

[0054] a. For the feeding of laying hens in the growing stage, the initial temperature of the chicken house is controlled at 32-34℃, and then the temperature is lowered by 1℃ each week until the temperature is controlled at a constant temperature of 22-24℃. The light exposure time of the chicks in the first week is not less than 23h per day, and then it is reduced by 0.5h each week until the light exposure time is controlled at 16-20h per day. The humidity is controlled at 50-60%. The chicks are fed with high-calcium formula feed A and additives, and the dosage is gradually increased until they reach adulthood. The daily dosage of high-calcium formula feed A and additives for chicks is 60g / chicken, and the dosage of additives is 5g / chicken. Feeding is carried out throughout the day, and the chicks can be released to move around for 2-3h every day;

[0055] Step b, raising adult laying hens, the temperature of the chicken house is controlled at a constant temperature of 20-22° C., the daily light exposure time of the laying hens is controlled at 15-18 hours, the humidity is controlled at 50-55%, and the laying hens are fed with high-calcium formula feed B and additives, and the dosage is gradually increased. The daily dosage of high-calcium formula feed B for laying hens is 90g / hen, and the dosage of additives is 10g / hen. The laying hens are fed in a time-divided feeding method, and are fed 4-5 times a day;

[0056] Step c, raising laying hens in the laying period, controlling the temperature of the chicken house at a constant temperature of 15-17° C., controlling the light exposure time of the laying hens at 14-16 hours per day, controlling the humidity at 45-50%, feeding the laying hens with high calcium formula feed C and additives, wherein the daily dosage of high calcium formula feed C is 80 g / hen, and the dosage of the additive is 25 g / hen, and the feeding is carried out in a time-divided feeding manner, and the feeding is carried out 3-4 times a day;

[0057] 4. Sanitation and epidemic prevention: chicken houses should be disinfected and ventilated regularly, laying hens should be vaccinated, dead laying hens should be burned, and laying hens in sick areas should be isolated in time.

[0058] High calcium formula feed A is composed of the following materials in the following mass ratio: 30-35 parts of corn, 30-32 parts of soybean meal, 1-2 parts of cottonseed meal, 1-3 parts of calcium bicarbonate, 0.2-0.3 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

[0059] High calcium formula feed B is composed of the following materials in the following mass ratio: 60-63 parts of corn, 2-3 parts of shrimp shells, 1-2 parts of kelp, 15-17 parts of soybean meal, 4-6 parts of rapeseed meal, 2-4 parts of cottonseed meal, 3-5 parts of calcium bicarbonate, 0.3-0.5 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

[0060] High calcium formula feed C is composed of the following materials in the following mass proportions: 60-65 parts of corn, 40-50 parts of green vegetable leaves, 16-19 parts of soybean meal, 3-4 parts of cottonseed meal, 3-4 parts of wheat bran, 6-7 parts of shell powder, 0.4-0.5 parts of calcium salt, 6-7 parts of fish meal, 2-3 parts of bone meal, 0.1-0.2 parts of trace elements, 0.2-0.5 parts of Panax notoginseng, and 5-10 parts of motherwort.

[0061] The additive is composed of the following materials in the following mass proportions: 5-8 parts of Rowewesol Hy.d, 100-200 parts of vitamin B, 100-200 parts of vitamin C, 2000-3000 parts of sodium bicarbonate, 20000-30000 parts of 30-40 mesh fine stone powder, and 30000-40000 parts of coarse stone powder.

[0062] Embodiment 4:

[0063] The laying hen breeding method to improve eggshell quality includes the following steps:

[0064] 1. Choose a qualified address to build a chicken house. Choose a place with high terrain, sheltered from the wind, facing the sun, dry and flat, close to water sources, good drainage, and far away from noise as the address of the poultry house. The chicken raising area in the chicken house is paved with sandy loam with a thickness of 5-15cm and mixed with a certain amount of quicklime.

[0065] 2. Choose the right laying hen breed, one that is disease-resistant, produces a lot of eggs, and has good egg quality;

[0066] 3. The specific process of raising laying hens is divided into the following three steps:

[0067] a. For the feeding of laying hens in the growing stage, the initial temperature of the chicken house is controlled at 32-34℃, and then the temperature is lowered by 1℃ each week until the temperature is controlled at a constant temperature of 22-24℃. The light exposure time of the chicks in the first week is not less than 23h per day, and then it is reduced by 0.5h each week until the light exposure time is controlled at 16-20h per day. The humidity is controlled at 50-60%. The chicks are fed with high-calcium formula feed A and additives, and the dosage is gradually increased until they reach adulthood. The daily dosage of high-calcium formula feed A and additives for chicks is 75g / chicken, and the dosage of additives is 3g / chicken. Feeding is carried out throughout the day, and the chicks can be released for 2-3h every day;

[0068] Step b, raising adult laying hens, the temperature of the chicken house is controlled at a constant temperature of 20-22° C., the daily light exposure time of the laying hens is controlled at 15-18 hours, the humidity is controlled at 50-55%, and the laying hens are fed with high-calcium formula feed B and additives, and the dosage is gradually increased. The daily dosage of high-calcium formula feed B for laying hens is 105g / hen, and the dosage of additives is 6g / hen. The laying hens are fed in a time-divided feeding method, and are fed 4-5 times a day;

[0069] Step c, raising laying hens in the laying period, controlling the temperature of the chicken house at a constant temperature of 15-17° C., controlling the light exposure time of the laying hens at 14-16 hours per day, controlling the humidity at 45-50%, feeding the laying hens with high calcium formula feed C and additives, wherein the daily dosage of high calcium formula feed C is 95 g / hen, and the dosage of the additive is 15 g / hen, and the feeding is carried out in a time-divided feeding manner, and the feeding is carried out 3-4 times a day;

[0070] 4. Sanitation and epidemic prevention: chicken houses should be disinfected and ventilated regularly, laying hens should be vaccinated, dead laying hens should be burned, and laying hens in sick areas should be isolated in time.

[0071] High calcium formula feed A is composed of the following materials in the following mass ratio: 30-35 parts of corn, 30-32 parts of soybean meal, 1-2 parts of cottonseed meal, 1-3 parts of calcium bicarbonate, 0.2-0.3 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

[0072] High calcium formula feed B is composed of the following materials in the following mass ratio: 60-63 parts of corn, 2-3 parts of shrimp shells, 1-2 parts of kelp, 15-17 parts of soybean meal, 4-6 parts of rapeseed meal, 2-4 parts of cottonseed meal, 3-5 parts of calcium bicarbonate, 0.3-0.5 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

[0073] High calcium formula feed C is composed of the following materials in the following mass proportions: 60-65 parts of corn, 40-50 parts of green vegetable leaves, 16-19 parts of soybean meal, 3-4 parts of cottonseed meal, 3-4 parts of wheat bran, 6-7 parts of shell powder, 0.4-0.5 parts of calcium salt, 6-7 parts of fish meal, 2-3 parts of bone meal, 0.1-0.2 parts of trace elements, 0.2-0.5 parts of Panax notoginseng, and 5-10 parts of motherwort.

[0074] The additive is composed of the following materials in the following mass proportions: 5-8 parts of Rowewesol Hy.d, 100-200 parts of vitamin B, 100-200 parts of vitamin C, 2000-3000 parts of sodium bicarbonate, 20000-30000 parts of 30-40 mesh fine stone powder, and 30000-40000 parts of coarse stone powder.

[0075] Comparative Example:

[0076] Laying hens are raised according to conventional laying hen rearing methods.

[0077] 500 laying hens were selected and raised according to the laying hen breeding method for improving eggshell quality provided in Examples 1-4 and the breeding method of the comparative example, and the data of the laying hens during the laying period for 30 days were recorded, including the number of dead chickens, the number of eggs laid, and the number of broken eggs. The results are shown in Table 1.

[0078]

[0079] Table 1

[0080] It can be seen from Table 1 that the laying hens raised according to the laying hen breeding method for improving eggshell quality provided by the present invention are significantly better than conventional laying hens in terms of egg production rate and eggshell quality, can effectively reduce the egg breakage rate, increase the output value, and can reduce the mortality rate of laying hens, and are worthy of promotion and use.

Claims

1. A laying hen breeding method for improving eggshell quality, It is characterized in that It includes the following steps:

1. Choose an address that meets the requirements to build a chicken house; 2. Choose the right egg-laying chicken breed; 3. The specific process of raising laying hens is divided into the following three steps: a. For the feeding of laying hens in the growing stage, the temperature of the chicken house is controlled at a constant temperature of 22-24℃, the light exposure time of the chicks is controlled at 16-20h per day, the humidity is controlled at 50-60%, and the chicks are fed with high calcium formula feed A and additives, and the dosage is gradually increased until adulthood. The daily dosage of high calcium formula feed A for chicks is not more than 75g / chick, and the dosage of additives is not more than 5g / chick; Step b, raising adult laying hens, the temperature of the chicken house is controlled at a constant temperature of 20-22° C., the daily light exposure time of the laying hens is controlled at 15-18 hours, the humidity is controlled at 50-55%, and the laying hens are fed with high calcium formula feed B and additives, and the dosage is gradually increased, the daily dosage of high calcium formula feed B for laying hens is not more than 105g / hen, and the dosage of additives is not more than 10g / hen; Step c, raising laying hens during the laying period, controlling the temperature of the chicken house at a constant temperature of 15-17° C., controlling the daily light exposure time of the laying hens at 14-16 hours, controlling the humidity at 45-50%, feeding the laying hens with high calcium formula feed C and additives, wherein the daily dosage of high calcium formula feed C is not more than 95 g / hen, and the dosage of the additive is not more than 25 g / hen; 4. Sanitation and epidemic prevention: chicken houses should be disinfected and ventilated regularly, laying hens should be vaccinated, and laying hens in diseased areas should be isolated in time.

2. A laying hen breeding method for improving eggshell quality according to claim 1, Features The high calcium formula feed A is composed of the following materials in the following mass ratios: 30-35 parts of corn, 30-32 parts of soybean meal, 1-2 parts of cottonseed meal, 1-3 parts of calcium bicarbonate, 0.2-0.3 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

3. A laying hen breeding method for improving eggshell quality according to claim 1, It is characterized in that The high calcium formula feed B is composed of the following materials in the following mass ratios: 60-63 parts of corn, 2-3 parts of shrimp shells, 1-2 parts of kelp, 15-17 parts of soybean meal, 4-6 parts of rapeseed meal, 2-4 parts of cottonseed meal, 3-5 parts of calcium bicarbonate, 0.3-0.5 parts of salt, 2-3 parts of fish meal, and 1-2 parts of bone meal.

4. A laying hen breeding method for improving eggshell quality according to claim 1, It is characterized in that The high calcium formula feed C is composed of the following materials in the following mass proportions: 60-65 parts of corn, 40-50 parts of green vegetable leaves, 16-19 parts of soybean meal, 3-4 parts of cottonseed meal, 3-4 parts of wheat bran, 6-7 parts of shell powder, 0.4-0.5 parts of calcium salt, 6-7 parts of fish meal, 2-3 parts of bone meal, 0.1-0.2 parts of trace elements, 0.2-0.5 parts of Panax notoginseng, and 5-10 parts of motherwort.

5. A laying hen breeding method for improving eggshell quality according to claim 1, It is characterized in that The additive is composed of the following materials in the following mass ratios: 5-8 parts of Rowewesol Hy.d, 100-200 parts of vitamin B, 100-200 parts of vitamin C, 2000-3000 parts of sodium bicarbonate, 20000-30000 parts of fine stone powder and 30000-40000 parts of coarse stone powder.

6. A laying hen breeding method for improving eggshell quality according to claim 5, It is characterized in that The fine stone powder has a mesh size of 30-40.

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