30results about How to "Good meat production performance" patented technology

The invention discloses a method for breeding a meat and wool dual-purpose new variety of Gansu alpine merino, which comprises: crossing a South African mutton merino serving as a male parent and a Gansu alpine merino serving as a female parent, and selecting first-generation hybrid female merinos; crossing the select first-generation hybrid female merinos with South African mutton merinos, and selecting second-generation hybrid male and female merinos; crossing the selected second-generation hybrid female merinos with South African mutton merinos and selecting third-generation hybrid female merinos; mating the third-generation hybrid female merinos with the selected second-generation hybrid male merinos to breed the zero-generation merinos of the meat and wool dual-purpose new variety of Gansu alpine merino; selecting high-quality male merinos and female merinos; and performing 3 to 4 generations of crossing by a group secondary selection method and obtaining the meat and wool dual-purpose new variety of Gansu alpine merino. The merinos bred by the breeding method have the advantages of tall and big body, high lambing percentage, quick growth, high wool quality, high meat quality and the like, and are suitable for drylot feeding and pen feeding for fattening. The method is in accordance with the development trend of sheep breeding industry of China.

The invention relates to the field of genetic breeding of domestic fowls and particularly relates to a selective breeding method for high-uniformity slaughter type high-quality spotted-brown chickens.The method comprises the steps: establishing three specialized lines, wherein a line A is a rapid-big spotted-brown chicken assorted terminal paternal line, is a normal type spotted chicken and is medium or relatively high in growth speed; a line B is a DW-linked-gene spotted-brown chicken pure line, is a dwarf type spotted chicken, is medium or relatively low in growth speed and contains an ultrarapid-big AA chicken blood line; and a line C is a normal type brown chicken and is medium or relatively high in growth speed; producing a parent-generation BC line by taking a cultured line C as a first female parent and taking a cultured line B as a first male parent; and producing commodity chickens ABC by taking a cultured line AA as a terminal male parent and taking selected and reserved hens of the parent-generation BC line as a terminal female parent. Through the method, the high-quality chickens, which are suitable for being subjected to factory slaughter processing and are obvious inslaughter property advantages, can be cultured; and through a mode of matching of three lines, a new variety of high-uniformity slaughter type high-quality cold-fresh chickens, which are stable in genetics, meet requirements of a live chicken market and can be directly applied to product, is bred.

The invention belongs to the technical field of breeding of meat rabbits, and relates to the breeding method of cold-resistant rabbits. The method comprises the first step of breeding cold-resistant breeding rabbits the Soviet union Chinchillas introduced from Russia and Vienna azure purebred rabbits for four generations respectively to form specialized strains; the second step of choosing Chinchillas doe and Vienna azure buck to conduct hybrid to produce an F1 generation; the third step of choosing doe which are expanding in skin, obvious in oestrus and good in maternity in the F1 generation to conduct backcross on the Vienna azure buck to generate an F2 generation; the fourth step of choosing buck which are large in physique, good in meat yield performance, and large in hair density in the F2 generation with doe which are expanding in skin, obvious in oestrus and good in maternity to conduct crossing to obtain an F3 generation; the fifth step of repeating the fourth step till a meat rabbit new strain in which the rabbits are basically consistent in body form and appearance, stable in genetic performance, and good in cold resistant performance is bred. The breeding method of the cold-resistant rabbit is simple and feasible, the breeding time is short, the cost is low, the new-strain rabbits are strong in reproduction capability, large in growth speed, high in adaptability and high in economic benefit.

A breeding method for a new strain of Jianyang big-eared sheep relates to the technical field of animal breeding, in particular to a breeding method for a new strain of Jianyang big-eared sheep. The purpose of the invention is to provide a goat breed with fast growth and development, strong adaptability, high meat production rate and slaughter rate, and a reproduction rate of more than 210%. After long-term selection and breeding, the present invention has the conditions of an excellent population in terms of quality, quantity and genetic performance, and has formed a population with high reproduction rate, large individual, fast growth and development, good meat production performance, rough feeding resistance, and strong disease resistance. , good leather, tender meat, no smell and other characteristics of the variety, and basically formed an excellent variety with relatively stable genetic performance and a certain population size, which is easy to promote.

The invention provides a hybrid breeding method of high-quality and high-end beef new variety Low-li cattle, and relates to the technical field of breeding. The breeding method comprises the steps of breeding management, raising management and cow house management. Good beef variety Limousin cattle is introduced to be hybridized with Hezhou local yellow cows to obtain high-quality binary hybridized cattle, then another high-quality variety Lowline cattle are utilized to conduct ternary hybridization with the binary hybridized yellow cow to obtain high-quality beef new variety Low-li cattle, and then artificial breeding is conducted on the new variety Low-li cattle obtained by hybridization by stages to finally obtain the high-end beef. By means of the hybrid breeding method, the high-quality and high-grade beef new variety Low-li cattle have the advantages of coarse fodder resistance, cold resistance and high disease resistance, the dressing percentage and the pure meat percentage are both far higher than those of domestic cattle, through the utilization of hybridization advantages, the close crossing status quo of local cattle due to long-term closeness is changed, the variety of cattle is improved, and high-end beef needed by people is obtained.

The invention discloses a breeding method of slaughtering and processing type excellent-quality partridge shank chickens. The breeding method comprises the following steps of through variety introduction and hybrid variety production, constructing an underlying group of a paternal line B01 and a matrilineal line B02, by a genealogical breeding method, maintaining the reproductive performance and improving the growth rate and meat production performance, and through hybridization, culturing slaughtering and processing type excellent-quality partridge shank chicken commodity replacing groups. According to the method, the problems that conventional excellent-quality partridge shank chickens are low in growth rate and poor in meat production performance are solved, in the cultivation process, the specific advantages of the partridge shank chickens of being beautiful in appearance, unique in somatotype, delicious in meat quality and meat taste, high in disease resistance, good to raise and like are selected and reserved, the cultured excellent-quality partridge shank chickens are uniform in appearance, good in meat quality and flavor, high in growth speed, high in meat production performance, and convenient in commercial production and sales, and the breeding method has important significance of meeting requirements of modern chicken processing for excellent-quality chicken variety sources.

The invention discloses a cultivating method for a new strain for Alpine Merino mutton. The method includes the steps that South African meat Merino serving as a male parent and Alpine Merino servingas a female parent are subjected to grading crossing to obtain an F1 generation; Merino is selected and reserved after crossing, then the South African meat breeding Merino serves as the male parent or the Alpine Merino serves as the female parent, grading crossing or backcross is carried out, and an F2 generation is obtained; the F2 generation and the F1 generation or the female-parent Alpine Merino are backcrossed, and rams and ewes of the obtained F3 generation are selected and reserved with the individual phenotype method and are cultivated; the rams and the ewes after selecting reservingand cultivation are subjected to crossing fixation of 3-4 generations, and the new strain for the Alpine Merino mutton is obtained. The cultivating method for the new strain for the Alpine Merino mutton has the advantages that the cultivating method is suitable for Qilian-mountain plateau ecological areas and fine-wool-sheep main producing areas, mutton production is developed, and existing fine-wool-sheep development modes are not damaged; the new strain has the advantages of being large in physique, high in growing development speed, excellent in wool quality, good in meat performance, stable in inheritance performance and the like.

The invention provides a cultivation method for speckle feather, meat and egg multi-purpose type duck with high reproductive rate. The method comprises the following steps: taking Shanma duck pure line as a female parent and Jianchang duck shallow speckle feather male duck as a male parent and then hybridizing for the first time; taking the male duck acquired after the hybridizing for the first time as the male parent and the female duck of Shanma duck pure line as the female parent and then hybridizing for the second time; taking the female duck obtained after the hybridizing for the second time as the female parent and the male duck of large-body type cherry valley duck maternal line as male parent and then hybridizing for the third time; taking the female duck obtained after the hybridizing for the third time as the female parent and the male duck of large-body type cherry valley duck maternal line as the male parent and then hybridizing, thereby obtaining the fourth generation of hybridized group; lastly, performing transverse fixing and systematic breeding, thereby obtaining a new strain of the speckle feather meat duck with high reproductive rate, more eggs, excellent meat performance and phenotype stability. The feather of the whole body of the speckle feather meat duck obtained according to the method provided by the invention is primary in yellow speckle color; the thorax and abdomen parts are locally marked with white feather; the weight of the adult duck is 2.75kg-3.00kg; the marketing weight of the 8-week old commodity meat duck can reach up to 1.95kg-2.25kg; the annual egg yield of the female duck can reach up to 250; the fertility rate of the hatching egg is above 94%.

The invention discloses a breeding method of a new strain of hummel yaks. The breeding method comprises the following steps that (1) general investigation is conducted on yak groups in a breeding area, and the content of the general investigation mainly comprises presence or absence of horns of the yaks, body structures, appearance features and the like; (2) female yaks, having the basically consistent appearances, no horn, and similar characters, of the yaks subjected to general investigation in the step (1) are marked and registered, files are created, and a basic female yak group is organized; (3) the basic female yak group selected in the step (2) hybridizes with excellent hummel male yaks, and measurement, selection and remaining of offspring are conducted; (4) the method of the marker-assisted selection technology is used for accelerating a strain breeding process, and the new strain of the hummel yaks is obtained through 3-4 generation crossing fixation in the method of group subculture breeding. Compared with domestic yaks, the new strain of the hummel yaks has the advantages of being good in meat performance, high in reproductive rate and strong in the ability of adapting to the environment.

The invention provides a breeding method for heat-resisting beef cattle, which comprises the following steps: mating a Brahman bull with a mourn catalo cow to obtain a first generation cattle I; mating a Brahman-mourn catalo bull with a mourn catalo cow to obtain a first generation cattle II; mating the first generation cattle I with the first generation cattle II to obtain a second generation cattle; mating like to like or selecting excellent individuals from the second generation cattle to mate with a Brahman-mourn catalo to born a third generation cattle which is the heat-resisting beef cattle. The beef cattle obtained according to the invention has high breeding survival rate, fast growth, early maturity, good meat production performance, even muscular fat distribution, tender meat, good taste, tick and heat resistance, and wide adaptability.

The invention relates to a breeding method of a new breed of Huanghuai mutton sheep. The method includes taking Dorper sheep as male parents and taking small tailed han sheep or small tailed han sheephybrid sheep as female parents to perform hybridization; and breeding the new breed of mutton sheep which are high in reproduction rate, fast in early growth rate, high-quality in meat and suitable for breeding at Huanghuai areas through hybrid innovation, crossing fixation and group expanding propagation. The weights of the adult rams of the new breed Huanghuai mutton sheep can reach 98.1 kg, and the weight of the ewes can reach 71.7 kg; the fattening weights of 6-month-old rams and ewes are respectively 58.50 kg and 52.45 kg; the dressing percentage of the 6-month-old fattening rams and ewes are respectively 56.02% and 53.19%; and the annual lambing rate of the ewes is 252.82%, and the number of weaned lambs provided by the ewes per year is 2.38. Through the on-site examining and approving of National Livestock and Poultry Breed Committee in 2019, powerful support can be provided for the enhancement of self-sufficiency rate of core provenance of Chinese mutton sheep, the developmentquality benefit and competitiveness of mutton sheep breeding industries and the development of modern mutton sheep industries; and therefore, the method has good economic and social benefits.

The invention discloses a breeding method for heat-resisting beef cattle, comprising the following operations: (1) obtaining a Brahman-mourn catalo through hybridization; (2) carrying out oocyte collection on a cow of Brahman-mourn catalo; (3) carrying out in vitro embryos production by utilizing the oocyte collected in the second operation and a bull of Brahman-mourn catalo so as to obtain a cowhide; and (4) transplanting the cowhide in the Brahman-mourn catalo or other cows, and bearing after maturation. The beef cattle bred through the method is heat-resisting, tick-resistant, quick in growth, high in breeding rate and high in applicability.

The invention provides a quality variety breeding method to Huyang (a kind of sheep raised in Zhejiang province), including performing hybridization and inter mating by taking female Huyang as the female parent and taking male Dorper as the male parent, breeding and expanding propagation by combination of a phenotypic selection method and the meat production trait detection technology, so as to obtain the novel meat variety of Huyang. Before hybridization, the female sheep and the male sheep are fed for one month, which can improve reproductive performance of Huyang within a short time; Huyangcultivated by the method maintains excellent reproductive performance, and also has excellent meat production performance as the Dorper; its pure meat percentage can be up to 45%.

The invention discloses a hybrid production method capable of increasing the local pig pork production. The method comprises the steps that hybridization is conducted by taking Duroc as a male parentand taking a Meihuaxing pig as a female parent, and Duroc and Meihuaxing cross uni-generation pigs are bred; the result shows that daily gain can be increased, and feed conversion efficiency can be improved; carcass traits are good, the slaughter rate is 71.43+/-0.99%, the lean meat percentage is 54.57+/-0.78%, the carcass length is 94.07+/-2.89 cm, the carcass weight is 72.03+/-1.39 kg, the eye muscle area is 33.13+/-2.07 cm<2>, the average backfat thickness is 26.13+/-0.55 mm, the Duroc and Meihuaxing lean meat percentage is 54.57+/-0.78% which is increased by 5.8% and 6.4% compared with those of Berkshirea and Meihuaxing and Meihuaxing and Meihuaxing respectively, it is indicated that by taking Duroc as the male parent for hybridization, the meat performance of the Meihuaxing pigs can be improved, the lean meat percentage is increased, the growth rate of the local pigs can be obviously increased, and the time for entering the market can be shortened.