502 results about "Dorking chicken" patented technology

The invention discloses a method for feeding an egg newborn chick with high efficiency in the field of agricultural pasturage breeding. The method takes a mode that body type indexes reach the standard as a standard and finds out the body type indexes that the determining degree of the brooding period of layers to the laying performance is maximum. The breeding process comprises the following steps: a preventive medicine of one treatment course is added in the feed of 3-5 days before 20 ages in days in the 7-11 ages in days of a newborn chick; within 1-2 days before and after immunization of each time, a stress-resisting additive is added into the drinking water of the newborn chick; the nutritional level of rations of 0-3 ages in week or 0-4 ages in week is higher than that of rations atthe later period of brooding; the newborn chick is fed with a feed to 8 ages in week; and after 8 weeks, the feed is replaced by rations for raising grown chickens. Compared with a conventional breeding method, the method enhances the standard reaching rates of the body weight and the shank length of the newborn chick with 8 ages in week by 12.4% and 9.3% respectively, enhances the uniformity of chick colonies by 8.4%, enhances the egg yield by 7.2%, lowers the mortality rate of the laying period by 4.3% and enhances the benefit of breeding chickens by 18.7%; and the input-output ratio averagely reaches 1:8.1.

The invention discloses a laying hen feed taking nuts as feed components and a classified feeding method of the laying hen, wherein the classified feeding method comprises laying hen feed preparing, laying hen drying water preparing, laying hen classifying and a laying hen feeding method. The laying hen feed is characterized in that the laying hen feed has nut components, wherein the nuts comprise shelled melon seeds (A3), peanut kernels (A4), perilla seeds (A15), castor seeds (A25), sesames (A34), and the like. According to the laying rate, the laying hens are classified into ri laying hens, mu laying hens, chang laying hens, jing laying hens and to-be-selected laying hens; a feed component (A), a feed component (B) and standard feed (M) are pre-mixed according to a certain weight ratio to prepare a mixed feed (X); the mixed feed (X) is fed for a laying hen crowd with different laying rates according to a certain number of the laying hens to feed the laying hens; a drinking water component (C) and a drinking water component (D) are added into standard drinking water (W) in a ratio of (C) (1-5): (D) (2-10), 700g-1000g in total, by respectively adopting a penetrating method to prepare mixed drinking water (Y) for the laying hens to drink. After the method is adopted to feed the laying hens, the egg product quality can be effectively improved, meat quality of obsolete laying hens can be improved, and great economic benefits can be brought for the breeding industry.

The invention discloses a laying hen breeding method, which comprises the following steps of (1) chicken culture: lively and healthy chickens with regular size are selected, and the chickens are cultured at 36 to 37 DEG C; (2) growing period breeding: after one month, the chickens are moved out from a chicken culture room, and are bred at 21 to 24 DEG C, the breeding density is 20 to 25 chickens per square meter, the relative humidity is 55 to 60 percent, the illumination time is 8 to 10h / d, and the illumination intensity is 1 to 1.3w / m<2>; (3) egg laying period culture: the breeding density is 15 to 20 chickens per square meter, the temperature is 15 to 23 DEG C, the humidity is 60 to 70 percent, starting from 20 week old, the illumination is increased by 0.5h per week until the illumination time is 14 to 16h / d, in addition, the illumination intensity is increased to 4 to 5w / m<2>, and in four weeks before the hen elimination, the illumination time is gradually prolonged to 17h until the elimination, eggs are picked in time for creating egg-free environment; (4) hygiene and disease control: ventilation and air exchange are carried out in a henhouse in time, and air in the henhouse keeps fresh. The invention provides the healthy and scientific laying hen breeding method capable of improving the laying hen rate.

The invention discloses a laying hen forage premix containing DHA enriched in algae protein powder. The invention belongs to the technical field of forages. The laying hen forage premix is prepared with an optimal formula obtained after repeated scientific experiments. The components of the forage premix are functionally complementary, and provide a synergetic effect. According to the invention, basic nutrition requirements of laying hens during a laying period are comprehensively considered; and algae protein powder and chia seeds rich in Omega-3 fatty acids such as DHA are reinforced. With the forage premix provided by the invention, the body builds of the laying hens are improved, the body immunities of the laying hens are improved, the utilization rate of the forage can be improved, digestion and absorption of the nutrients can be promoted, and the laying performances of the laying hens can be effectively improved. Especially, the DHA content in eggs can be improved, and the cholesterol content in eggs can be reduced, such that egg qualities can be improved. Among the eggs laid by the laying hens fed with the forage premix provided by the invention, an average DHA content in every 100g of yolk reaches 380-560mg, which is 8-12 times that of common eggs.

The invention relates to a chicken feed, in particular to an egg chicken feed. The egg chicken feed comprises the following components: an animal protein source, a plant protein source, mineral matters, vitamin additives, corn protein powder, corn distillers dried grains with soluble (DDGS), a lutein additive, a cantha additive and a coloring synergist. By feeding the egg chicken feed of the invention, egg yolk becomes yellower and redder, egg white becomes thicker, eggs have good color and pure flavor, and the color of eggs is difficult to fade; the eggs are superior to local eggs of chickens fed by natural feed; meanwhile, carotene physiological activator content of the egg yolk is higher and the preservation time of the eggs is longer.

The invention discloses a breeding method of laying hens capable of laying high selenium eggs which comprising the following steps: the breeding method is passed through five processes such as henhouse construction, feed preparation, brood period, adult period and egg producing period, the high selenium activity feed is prepared by, by weight, the following raw materials of 35-40 parts of malt, 20-30 parts of corn, 10-20 parts of beans, 10-15 parts of millet, 3-4 parts of astragalus, 2-3 parts of fructus schisandrae, 5-8 parts of salvia mihiorrhiza bunge, 10-15 parts of codonopsis pilosula, 2-10 parts of liquorice, 10-15 parts of chrysanthemums, 10-15 parts of common yam, 2-5 parts of dates and 3-10 parts of sweet wormwood herbs. The selenium content of eggs laid by laying hens which are bred with the method is 20-25 times that of common eggs in the prior art, when the high selenium eggs laid by the laying hens which are bred by the method are eaten, enough selenium can be supplemented simultaneously when protein is supplemented, and selenium containing medicines or health care products in the prior art can be completely replaced.

The invention discloses a concentrated feed for laying hens in egg-laying peak period. The feed comprises a laying hen dietary feed with main components of soybean meal, cottonseed meal, rapeseed meal, corn germ cake, corn germ meal, enzyme hydrolyzed feather meal, stone powder, calcium hydrogen phosphate, medical stone, salt, and methionine; a health care agent combination pack and a premix are added into the laying hen dietary feed; the health care agent combination pack comprises ovary protecting elements, microecological preparations, enzyme preparations, diluents, and Chinese herbal medicine health care agents; and the premix comprises coated vitamins, mineral elements, methionine, and carriers. The feed can prolong the egg-laying peak period of laying hens, improve the body immunity of laying hens, improve the quality of the eggs, allow the eggshell to have a good texture and a pure color, allow the yolk to have a dark color, and allow the eliminated hens to be full-fledged and have good quality.

The invention discloses a primer composition for discriminating a green-shelled-egg chicken genotype and a use thereof. The primer composition comprises two primer pairs, one primer pair comprises SLCO1B3 gene inserted EAV-HP sequence primers respectively shown in the formulas of SEQ ID NO. 1 and 2, and the other primer pair comprises SLCO1B3 gene non-inserted sequence primers respectively shown in the formulas of SEQ ID NO. 1 and 3. A DNA genome of a chicken to be detected is used as a template and is subjected to PCR amplification under the action of the primer pairs so that a PCR amplification product is obtained. Through detection of the amplified 209bp and 312bp bands, it is determined if the chicken to be detected can produce green-shelled eggs. The primer composition can discriminate the green-shelled-egg chicken genotype.

The invention relates to chicken feed, in particular to laying hen feed. Aiming at solving the technical problem of providing a type of chicken feed capable of improving the immunity and stabilizing the egg yield of laying hens, the invention adopts the technical scheme that the chicken feed contains the following ingredients by weight portions: 180-230 parts of bean pulp, 600-650 parts of corn, 60-70 parts of mountain flour, 2-4 parts of amino acid, 0.2-0.5 part of vitamin, 2-3 parts of microelements, 5-10 parts of plant oil, 10-20 parts of calcium hydrophosphate, 0.5-1 part of active dry yeast, 0.5-1 part of bacillus subtilis, 1-3 parts of astragalus mongholicus and 1-3 parts of radix bupleuri. The amino acid is composed of methionine and lysine at weight portion ratio of 1-1.3:1.8-2.2. The mountain flour is replaced by shell powder which is at weight of 60-70 parts. The chicken feed can remarkably improve the immunity, reduces the morbidity and stabilize the egg yield of the laying hens at the turn of the seasons of spring and autumn.

The invention discloses a method for selecting and breeding a green-shin dominant white-feather broiler chicken strain and belongs to the technical field of molecular breeding. The marker-assisted selection method is adopted for identifying the genotype of the locus of dominant white feathers of chicken, the genotype of the locus can be quickly figured out, and the defects that test cross is complex, generation intervals are long and the like in conventional breeding are overcome. According to the green-shin dominant white-feather broiler chicken strain with the genotype II is produced by adopting the method, the complexity of test cross selecting and breeding is avoided, the generation intervals are shortened, the process of breeding is accelerated, and breeding cost is lowered. Moreover, the meat quality of the chicken strain is fine and tender, the taste of the meat is delicious, production performance is high, carcasses of the chicken do not have colored feather vestiges, and therefore the carcasses look better. Besides, the strain is used as a male parent to hybridize and match a high-yield laying hen breed or a fast-growth broiler chicken breed, and high-yield green-shin dominant white-feather broiler chicken or fast-growth green-shin dominant white-feather broiler chicken can be produced.

The invention relates to a compound vitamin for an egg-laying chicken. The compound vitamin comprises the following components: vitamin A, vitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6, vitamin B12, biotin, folic acid, niacin, pantothenic acid, vitamin C and a carrier. Compared with the traditional compound vitamin for the egg-laying chicken, the compound vitamin provided by the invention has comprehensive and reasonable nutrition, and can sufficiently meet the requirements for maintaining the egg-laying chicken and laying eggs, enhance the stress and disease resistance of the organism, increase the laying rate and improve the egg quality.

The invention relates to broiler feed which mainly comprises corn flour, bean pulp, wheat middling, corn protein powder, fish meal, oil, mountain flour, calcium hydrophosphate, salt, lysine, methionine, Fe, Cu, Mn, Zn and multi-vitamins. When Dorking chicken are bred, concentrated feed such as the corn flour, the bean pulp, the wheat middling, the corn protein powder and the fish meal is mainly used for breeding the Dorking chicken, chicken growing needed mineral substances, amino acid, microelement and vitamin are added to enable the feed to meet protein requirements of the chicken and to improve chicken quality at the same time. A use ratio of the feed is improved, and economic income is increased.

The invention belongs to the technical field of laying hen molecular genetic marker assisted selecting, and particularly relates to a molecular genetic marker for egg quality of a laying hen and application of the molecular genetic marker. The molecular genetic marker is a partial sequence of genes VLDLR and CTSD of the laying hen, and a VLDLR nucleotide sequence is as shown in SEQ ID No.1, and VLDLR nucleotide sequences are as shown in SEQ ID No.2-4. The molecular making method is utilized for selecting egg quality characters, so that a molecular marking method which is more effective, simpler and more convenient to implement is provided for marker assisted selecting in chicken breeding work; meanwhile, the molecular genetic marker can overcome the defects that the normal egg quality character selecting method is great in workload, is easily affected by the environment, is long in breeding period and the like, and provides an effective molecular marker breeding means for egg quality character improving, so that genetic progress of chicken is quickened.

The invention relates to the biotechnological field of poultry, and particularly relates to a feed for laying hens. The feed comprises the following components in parts by weight: 20-30 parts of corn powder, 20-30 part of wheat bran, 10-15 parts of DDGS (distillers dried grains with soluble), 15-20 parts of millet powder, 10-20 parts of pumpkin powder, 15-25 parts of spinach leaves, 0.05-0.10 part of complex vitamin, 0.05-0.10 part of trace elements, 0.1-1.0 part of compound amino acids, and 3-5 parts of Chinese herbal medicine additives. The feed has the beneficial effects that the laying rate of the laying hens fed by the feed is over 90%, is increased by more than 24% compared with that of the laying hens fed by a common feed, the yolk index of eggs is increased by more than one time compared with that of eggs of the laying hen fed by the common feed, so that the quality of the egg is improved greatly; with the observation after 200 days, the laying hens fed by the common feed stops laying the eggs after 400-450 days, while 81.3% of the laying hens fed by the feed still lay eggs on 500th day as normal, the egg producing period is greatly prolonged, the use ratio of the laying hens is increased, and the benefits are greatly improved.

The invention discloses an under-forest-based breeding method of laying hens. The under-forest-based breeding method comprises the following steps: preparing a high-quality laying hen under-forest stocking field; selecting an under-forest-based laying hen house; selecting an under-forest stocking high-quality laying hen variety; carrying out high-quality laying hen under-forest breeding and raising management; preparing an under-forest breeding laying hen feed formula; planting a rotation grazing system and forage grass on a forest land pasture; immunizing stocking laying hens and establishing an under-forest stocking laying hen immunizing procedure; preventing and treating common parasitic diseases of the under-forest breeding of the high-quality laying hens; carrying out harmless treatment on breeding wastes of the stocking laying hens. The under-forest-based breeding method of the laying hens, disclosed by the invention, combines the characteristics of the under-forest breeding, and the immunizing procedure of the laying hens is optimized, and furthermore, the health of chicken flocks is guaranteed; a stocking characteristic is combined so that the prevention and treatment of the common parasitic diseases of the stocking laying hens are completed; the harmless treatment of the breeding wastes of the stocking laying hens is researched, and an ecological environment and sustainable development are guaranteed.

The invention relates to a method for producing native chickens. According to the method, the male parent is a high-yield line with deep color shin, the female parent is a yellow feather high-yield line; based on a sex-linked inheritance theory, the F1 female chickens have deep color shin, the male chickens have light color shin; if native chickens with yellow feather or with some hemp feather on the back are demanded in the market, third-line F1 female chickens with deep color shin are mated with male parents with deep color shin, which belong to a second fast growing line to breed commercial chickens, both male and female chickens, with deep color shin; if native chickens with yellow feather or some hemp features on the back are demanded in the market, the male parents which belong to a yellow feather high-yield line are matched with male parents which belong to a yellow feature high-yield line with deep color shin to obtain commercial chickens with yellow feature. The invention provides a novel method for breeding a native chicken producing line. The method can breed the native chicken producing line which can pass characters stably generation by generation, meet market needs and can be directly used for producing native eggs.

The invention discloses a production method of traditional Chinese medicine healthcare eggs, comprising the following steps of: 1, selecting a reasonable traditional Chinese medicine prescription which is used for preventing and treating the diseases of chicken sand improving the physique and nutritive ingredients of chickens; 2, fermenting the traditional Chinese medicine prescription to obtain fermentation solution and a fermentation body which are used for raising laying hens; 3, selecting laying hens from chicks, and raising by utilizing the fermentation solution and the fermentation bodyprepared in the step 2; and 4, obtaining the eggs laid by the raised laying hens during a laying period, i.e., the traditional Chinese medicine healthcare eggs. The eggs obtained through the production method disclosed by the invention have no hormones or antibiotics, traditional Chinese medicine constituents furthest exert efficacies after being fermented, and the eggs are natural, free from toxic or side effects, and free from medicine resistance; the production method is suitable for large-scale breeding, simple in operation, purely ecological, and pollution-free; and the produced eggs canbe taken as both food and medicines, has healthcare effect and is capable of treating diseases.

The invention belongs to the field of laying hen breeding devices, and particularly relates to an automatic laying hen breeding device. The automatic laying hen breeding device comprises a coop, an automatic watering device, an automatic defecation device and an automatic feeding device, wherein the coop is provided with the automatic watering device and the automatic feeding device; and the automatic defecation device is arranged at the lower part of the coop. Eggs laid by laying hens can be discharged and collected, so that a worker conveniently takes the eggs, the egg taking efficiency is improved and the human cost is reduced; drinking water of the laying hens do not need to be artificially added, the laying hens peck water drops oozing from an automatic water dropper for drinking by using mouths, and water is always in an annular water pipe, so that the condition of delayed supplement of the drinking water is avoided; the automatic laying hen breeding device is capable of uniformly loading materials to a trough in the coop, is high in feeding automatic degree, high in efficiency and good in effect; and feces discharged by the laying hens can be automatically scooped and collected timely, so that discharge or collection is facilitated, the operation is convenient and odor diffusion is avoided to the maximal extent.

The invention discloses a laying hen feed for improving the flavor of eggs and a production method of the laying hen feed. The feed consists of the following raw materials in parts by weight: 250-300 parts of fermented soybean meal, 200-250 parts of brown rice powder, 180-200 parts of rye bran, 150-180 parts of maize germ, 50-60 parts of fermented ground meat, 30-40 parts of degreased fish meal, 30-60 parts of chili dregs, 15-20 parts of grape pulps, 20-30 parts of pineapple juice, 2-3 parts of semen cassiae, 1-2 parts of Chinese wolfberry root-bark, 2-3 parts of forsythia suspensa, 2-3 parts of wild chrysanthemums, 2-3 parts of dandelions, 40-50 parts of bur clovers, 30-40 parts of Chinese fanpalm leaves, 10-15 parts of antigonon leptopus, 10-15 parts of amaranthus hypochondriacus, 5-10 parts of lotus roots, 5-10 parts of common ducksmeat herbs, 100-140 parts of a 1%-1.5% dicalcium phosphate solution, and 20-30 parts of a phagostimulant. The feed disclosed by the invention has the characteristics of being concentrated, fine, fragrant crisp and the like, laying hens grow quickly, the disease resistance is strong, the laying hens lay more eggs, the raising period of the laying hens is short, and the market competitiveness is strong; the eggs are crisp, sweet and greasy, are rich in nutrition and are fresh in taste; eggshells are hard and are not easy to smash, and the storage period of the eggs is long.

The invention discloses a breeding method of laying hens. The breeding method comprises steps as follows: in the brooding period, the illumination time is 23-24 hours for the first three days, is reduced to 18 hours from the fourth day to the seventh day and is 12h when the brooding period is ended, and the hens are fed with fodder for the brooding period; in the growing period, the breeding density is adjusted, and the hens are fed with fodder for the growing period; in the egg laying period, the temperature in a hen house is kept in the range of 13 DEG C-23 DEG C, the relative humidity is 55%-60%, the illumination time is 16 hours, and daily nutrition is guaranteed. According to the breeding method of the laying hens, formulas of the fodder for the brooding period and the fodder for the growing period are improved, the immune function of the laying eggs is adjusted, the protein quality of eggs laid by the laying hens is improved, the fodder cost is low, the nutrition is rich, the nutritional requirement of the laying hens is met, and the egg production is improved.

Disclosed is a recessive white feather green-shelled-egg bantam germ plasma resource cultivation method. Green-shelled genes of green-shelled-egg chickens are introduced to recessive white feather bantam groups, recessive white feather genes, short-legged genes and the green-shelled genes are combined and homozygous by means of hybridization and test mating, a family is built on the basis, the groups are expanded in a breeding manner by the aid of family selection and individual selection, and recessive white feather bantam germ plasma resources with green-shelled-egg laying characteristics are cultivated. The cultivation method has the advantages that recessive white feather bantams are selected to improve the green-shelled-egg chickens, the green-shelled-egg chickens are changed into recessive white feather green-shelled-egg bantams, and the breeding problem of the green-shelled-egg chickens can be effectively solved. Short and small hens with small bodies are suitable for cage culture, consume less feed but lay eggs as many as normal individuals (so that feed efficiency is higher). Besides, the short and small hens have the outstanding advantages of early sexual maturity, reduction of raising space, disease resistance and the like, the production cost of goods generation chickens can be greatly reduced, comprehensive raising benefit is improved, recessive white feathers are recessive as compared with colored feathers of native chicken breeds, and feather colors of filial generations of the chickens in the same place are as same as those of indigenous chickens, so that feather color mixing can be avoided.

The invention discloses a laying hen breeding method. The growth cycle of laying hens is divided into eight stages, namely 0-3 weeks, 4-6 weeks, 7-10 weeks, 11-15 weeks, 16 weeks-80% laying rate, 80% laying rate-40 weeks, 40-60 weeks and 60 weeks-weeding out, different feed nutritive standards and feeding environments are adopted for the eight stages, and the feeding environments include temperature, humidity, illumination and air quality. According to the laying hen breeding method, proper feeding environments and feed nutritive standards are selected in a targeted mode according to the different stages of growth of the laying hens, breeding is conducted scientifically, the production time of the laying hens is 7-15 days earlier than that of an ordinary feeding method, the sum of the death rate and the elimination rate is not higher than 5%, the laying rate peak stage of 90% and above of the laying hens is as long as 12 months, the income from each laying hen in one cycle can be increased by 15-20 yuan, maximization of production performance of the laying hens is achieved, and the laying hen breeding method is worthy of application and popularization.

The invention discloses a late-egg-laying-stage compound premixed feed for improving egg shell quality of laying hens. The compound premixed feed is prepared from, by mass, 10 parts of multivitamins,25 parts of compound trace elements, 18-22 parts of choline chloride in mass fraction of 50%, 36-44 parts of DL-methionine, 12-16 parts of L-lysine hydrochloride, 3-4 parts of phytase, 4-6 parts of acomplex enzyme agent, 3-4 parts of a probiotics, 90-110 parts of sodium chloride, 270-330 parts of calcium hydrogen phosphate, 240-305 parts of stone powder, 90-110 parts of spray-dried porcine globulin powder, 85-110 parts of montmorillonite and 1.5-3 parts of an antioxidant. The late-egg-laying-stage compound premixed feed is capable of improving immunity of the hens, stable egg laying performances and low feed-egg ratio are realized, broken eggs, cracked eggs and sandy shell eggs can be reduced, egg shells are dark in color, smooth and glossy, and eggs are high in quality, so that economicbenefits are increased.

The invention discloses a laying hen feed. The laying hen feed comprises the following ingredients in part by weight: 57 to 64 parts of corn, 23 to 26 parts of bean pulp, 4 to 6 parts of wild pepper seeds, 4 to 9 parts of rock flour and 2 to 3 parts of rovimix. The wild pepper seeds are added into the feed, so that unsaturated fatty acid content of the feed is increased, nutrients of eggs are guaranteed, raw smell of the eggs is removed, and mouthfeel is improved.

The invention discloses a chicken farm. The chicken farm is characterized in that a chicken house is included, the periphery of the chicken house is composed of surrounding walls, a herringbone roof is arranged on the top of the chicken house, passageways are arranged on the bottom face of the chicken house and at the surrounding wall portions, the inner side of each passageway is provided with a row of chicken cage frames, an excrement discharge channel is formed between the two rows of chicken cage frames, a chlorine dioxide micro-adding drinking water sterilizing system and a control device are further arranged in the chicken house, and a breeding monitoring system is arranged in the chicken farm. The invention further discloses a chicken breeding method. The breeding method has the advantages that the egg yield is high, the feed conversion rate is high, feed is saved, the survival rate of laying hens is high, the disease incidence is low, and labor efficiency, namely per capita laying hen breeding number, is high.

The invention relates to an internet of things technology based egg and chicken breeding environment intelligently monitoring system which comprises a data acquiring terminal. The data acquiring terminal consists of a sensing module and a transmitting module wherein the sensing module acquires in real time data associated with the breeding environment and the transmitting module able to display the environment data in real time transmits the data to a server terminal. The sensing module and the transmitting module are in bi-directional communications through a ZigBee wireless communication protocol. The transmitting module and the server terminal are in bi-directional communications through a GPRS network; the server terminal is in bi-directional communications with a client's terminal. The invention further discloses an internet of things technology based egg and chicken breeding environment intelligently monitoring method. With the method, a user can check current environment information data from the client's terminal and based on the standards for suitable environment parameters for eggs and chickens in poultry raising, controlling measures can be provided correspondingly for the blowers and wet curtains in the egg and chicken breeding environment. The system and the method are labor saving, able to achieve optimized control and have a good promotion effect for poultry raising and producing.

The invention discloses a laying hen raising method. The laying hen raising method includes the following steps of brooding period, growing period, laying hen period and health and epidemic prevention. The laying hen raising is divided into three stages, namely, the brooding period, the growing period and the laying hen period, and adequate feeding environment and rich-nutrition feed are provided according to growth characteristics of the laying hens at different stages; radix notoginseng is contained in the laying hen growing feed formula, mortality rate of growing laying hens is reduced effectively, and rich nutrition and high-quality proteins are provided for growing laying hens; by the laying hen feed, nutritional requirements of laying hens are assured, physique health of the laying hens is enhanced, and quality of eggs is improved.

The invention relates to the technical field of breeding industry, in particular to a poultry breeding technology, and particularly discloses a breeding method for a black-feather laying hen commercial line male parent and a breed forming mode of the commercial line. The breeding method for the commercial line male parent includes the steps that a common black-feather hen is selected as a sample according to requirements for weight and laying of the black-feather hen of the market, a high-yield rhode island red chicken and the selected black-feather hen are hybridized to produce a synthetic line, and after the synthetic line is hybridized, chicks meeting the market requirement are selected and continue to be bred to obtain chicks of the first generation; chicks of the second generation are obtained after the chicks of the first generation are screened and hybridized; chicks of the third generation are obtained after the chicks of the second generation are screened and hybridized; groups of all the generations need to be specifically screened before breeder selection, and a screened hybridization cock of the third generation is the black-feather laying hen commercial line male parent. A rhode island white line is used as a female parent to form the commercial line of the high-yield black-feather laying hen, offspring female chicks of the parent generation are black-feather hens, offspring male chicks of the parent generation are white-feather cocks, male and female can be distinguished naturally, and the egg yield of commercial generation with the age of 72 weeks can be 300 or more.

The invention provides a forage for hen, consisting of peach seed powder, soybean powder, corn powder, green vegetable powder, ligusticum wallichii powder, peach leaf powder, vitamin A, vitamin B, prepared rehmannia root powder, pine needle powder, monthly rose powder, pork liver powder, salt, dandelion powder, coptis chinensis franch powder, liquorice powder, cockscomb powder, leonurus powder and honeysuckle powder, wherein the percentage is weight percentage. The forage is low in cost, easy for burdening, simple in prescription and preparation method, and good in breeding effect. The bred hen is shining in hair color, bright-colored in hair color, large in size, healthy in body, and low in morbidity. The defects that natural resources are wasted, a pheasantry is polluted, and the growing development and the nutrient requirement of the hen are not achieved since various nutrient requirements of the hen are lack of a certain experience and the hen is slow in growth and development, low in egg production and easy to infect various infectious diseases caused by the nutritional deficiency can be effectively overcome.