68results about How to "Extend the period of use" patented technology

The invention relates to a quick regenerating method for vegetation of returning farmland to grassland zone in extremely cold areas, which comprises the following steps of: (1) mixing and seeding annual pasture oat and perennial pasture on the farmland returning to grassland zone, and building an artificial pasture integrating mowing and grass seed harvesting functions; (2) ploughing and raking the artificial pasture; (3) sowing the seeds and applying base fertilizer; and (4) mowing the oat forage grass in the first year and harvesting the grass seeds and mowing the perennial pasture in the second year or later after covering and compacting the grass seeds in the step (3). The method utilizes the annual oat and perennial pasture to form different biotypes of pasture mixing and seeding community, so that the weed spreading can be obviously suppressed, the soil humidity and air humidity are obviously improved, the evaporation capacity and water loss and soil erosion intensity are reduced, therefore, the soil exposure time is short after regeneration of the grassland zone, the vegetation covering is quick, the water retention and preservation of soil moisture effect is obvious, and the ecological and economic benefits are remarkable.

The mixed pasture seeding method includes the following steps: 1. mixing leguminous pasture seeds and gramineous pasture seeds in the weight ratio of 2 to (2.6-3.4) and including alphalfa, cocksfoot, Festuca arundinacea, and Lotas japonicus or Tifolium pratense; and 2. seeding the said posture seeds in the land of slight alkaline yellow soil at height above sea level of 600~800 meters at high temperature and high humidity conditions to establish artificial grassland. The method is simple and the established artificial grassland has the features of high pasture yield and quality and is heat resistant, drought resistant and aridity resistant.

The invention relates to a method for producing cement by utilizing high-silicon low-calcium limestone. The cement comprises the following raw materials in percentage by weight: 48 to 50 percent of low-grade high-silicon limestone with CaO content between 42 and 45 percent and f-SiO2 content between 10 and 18 percent, 31 to 33 percent of high-magnesium limestone, 16 to 18 percent of matched limestone, 3 to 6 percent of shale and 2 to 4 percent of ironstone. The method is technology which utilizes low lime saturation ratio and ore of high silicon rate and high alumina rate and has an attribute of low silica modulus; online detection is performed on the mixture ratio of the raw materials by using a gamma ray instrument and a formula is adjusted by using one minute as a cycle; and a plate hammer counterpunch type crusher is used for crushing, a roller-type vertical grinding mill is used for grinding and waste gas at the tail of a kiln is used for drying the raw materials. The method has the advantages of capability of developing and utilizing low-grade limestone resource, accurate material burdening, timely regulation of the mixture ratio, and capability of reducing homogenization facilities and storage yard; and high quartziferous rock ore can be used in vertical milling and has high grindability. The method is suitable for utilizing high-dissociative silicon low-calcium limestone.

The invention relates to a feed which can improve the large-scale hogpen sow production performance, and a breeding method; the feed comprises the following components based on weight proportions: 35-45 portions of corn, 5-10 portions of wheat bran, 5-10 portions of soybean meal, 5-15 portions of miscellaneous meal, 15-20 portions of fermented protein, as well as 10-15 portions of functional combined fibers. Aiming at the nutritional needs of sows at different stages, the invention prepares rational daily diet and uses the rich feedstuff to prepare the daily diet, as well as makes use of the fermented products in the food industry and the functional combined fibers to greatly meet the nutrient type and quality needs of the sows to improve the intestinal health of the sows, reduce the constipation problem of sows during pregnancy and improve the survival rate of embryos and litter size. The invention makes full use of fermented protein, lysine and other special nutritional factors to balance the daily dietary amino acid so as to meet the needs on micro-nutrients of the sows and promote the development of the fetus.

The invention discloses a dairy cow postpartum nutrition enhancer premix and a preparation method and application thereof. In a formula, the premix comprises the following components in part by weight: 77.400 to 81.400 parts of energy matters, 8.000 to 9.000 parts of calcium source, 1.000 to 2.000 percent of magnesium sulfate, 2.000 to 3.000 parts of sodium chloride, 1.000 to 2.000 parts of potassium chloride, 2.300 to 3.200 parts of uterus restoration nutritional ingredients, 0.600 to 0.680 part of anti-parturition stress matters, 0.050 to 0.100 part of flavoring agent and 0.200 to 0.600 part of sweetener, wherein the energy matters are glucose and an energy precursor matter; the anti-parturition stress matters are vitamin E, vitamin D, vitamin C, sodium selenite and organic selenium; and the uterus restoration nutritional ingredients are motherwort herb and / or a motherwort herb extract. In the preparation method, the components are mixed uniformly according to a specific sequence toobtain the premix. The premix is mixed with water to form oral liquid, can be directly drunk by dairy cows, is convenient to use quickly and has low cost. In addition, the premix can prevent postpartum syndromes of the dairy cows or reduce the morbidity of the dairy cows, and improve the production performance and utilization age limit of the dairy cows.

The invention relates to the technical field of animal feed, in particular to a compound pre-mixed material for dairy cows in the post-perinatal period and application thereof. The compound pre-mixed material consists of iron sulfate, manganese sulfate, zinc sulfate, copper sulfate, 1-percent potassium iodide, 1-percent cobalt sulfate, 1-percent sodium selenite, vitamin A, vitamin D, vitamin E, glucose, coated choline, rumen bypass fat, nicotinic acid, vitamin C, yeast cultures, organic chromium, dihydropyridine, sodium bicarbonate, and a carrier. The compound pre-mixed material can be safely and conveniently used, obviously improve an effective conception rate and oestrus rate of the dairy cows, reduce non-pregnant days of the dairy cows, shorten a claving interval of the dairy cows, enforce the body recovery of the dairy cows after delivery, lowers a culling ratio of the dairy cows, prolong a use period of the dairy cows, improve a feeding level of the dairy cows, and increase economic benefits of dairy cow farmers; and the compound pre-mixed material also has the advantages of easy source of raw materials, lower cost, obvious effect, easy popularization and wide application prospect, and is specially used for feeding the dairy cows in the post-perinatal period.

The invention discloses a mushroom dreg fermentation bed and a manufacturing method of the mushroom dreg fermentation bed. According to the mushroom dreg fermentation bed and the manufacturing method of the mushroom dreg fermentation bed, oil bran and fermentation bed strains are evenly mixed firstly, and rice hulls, mushroom dregs and the mixture of the oil bran and the fermentation bed strains are evenly mixed to form padding; 70-80% of the padding is placed into a fermentation tank and is spread flat, and pig manure and urine are evenly sprayed on the surface of the padding placed in the fermentation tank, wherein the pig manure and urine occupy 0.5-1% of the volume of the padding which is placed in the fermentation tank; the remaining evenly-mixed padding is placed in the fermentation tank and is spread flat again, and pig manure and urine are evenly sprayed on the surface of the remaining padding which is placed in the fermentation tank, wherein the pig manure and urine occupy 2-3% of the volume of the remaining padding which is placed in the fermentation tank; finally, the surface of the padding is completely or partially covered by a breathable straw curtain or jute bags, and pig raising can be conducted by means of the fermentation bed 2-4 days later. According to the mushroom dreg fermentation bed and the manufacturing method of the mushroom dreg fermentation bed, saw dust is completely replaced by the mushroom dregs, the additive amount of the mushroom dregs is increased, and the cost of the padding is reduced; due to the fact that the pig manure and urine are added to the surface layer of the mushroom dreg padding, stimulation of mushroom dreg particles to the respiratory tracts of pigs is reduced, and growth of the pigs is promoted. The manufacturing method of the mushroom dreg fermentation bed has the advantage that both time and labor are saved.

The invention relates to a feed containing N-carbamylglutamic acid and N-carbamylglutamic acid sodium salt for boars, preparation and application thereof. The feed is characterized by being prepared from the following components in percentage by weight: 0.10 to 0.25 percent of mixture of the N-carbamylglutamic acid and the N-carbamylglutamic acid sodium salt and auxiliary materials. The feed can promote the synthesis of source arginine in the bodies of boars, enhance the synthesis of carbon monoxide (NO) and polyamine, ensure that the boars exert the genetic potential more effectively, improve the utilization age limit and the health level of the boars and improve the economic benefit of raising the boars.

The invention discloses a medicinal composition for increasing pig's reproductive performance, which is prepared from glycerin, olive oil, spinacene and dried wheat flour.

The invention discloses a new Denmark series sow lactation period breaking fodder, wherein the fodder is prepared from, by weight, 40-55 parts of grain, 10-20 parts of bean pulp, 1-5 parts of wheat bran, 5-10 parts of rice bran, 5-10 parts of corn DDGS, 1-3 parts of expanded flaxseed, 2-5 parts of expanded soybean, 1-5 parts of fish meal, 1-3 parts of soybean hull, 0.5-3 parts of grease, 1-2 parts of mountain flour, 0.1-0.3 part of table salt, 0.1-0.3 part of sodium bicarbonate, 1-3 parts of sugar, 0.1-0.3 part of choline chloride, 0.5-1 part of amino acid, 0.1-0.2 part of Vitamin C, 0.01-0.03 part of organic calcium HyD, 0.5-1.5 parts of calcium hydrophosphate, 0.5-1 part of composite microecologics, 1 part of compound premix, 0.01-0.03 part of antioxidant; the fodder is further prepared from at least one of 1-3 parts of sugar beet pulp, 1-3 parts of apple pomace, and 1-3 parts of oat husk. The invention is applied to the new Denmark series lactating sow for three and more piglets; the fodder can effectively release or solve the constipation of the new Denmark series lactating sow, and promote the postpartum.

The invention relates to a zone building bionic coupling surface repairing waste machine tool guide rail. The surface of the guide rail is divided into three zones including a zone A, a zone B and a zone C from big to small according to the hardness obtained before repairing; strip bionic coupling elements, dot and strip combined bionic coupling elements and net bionic coupling elements are machined on the surface of the zone A, the surface of the zone B and the surface of the zone C correspondingly; and each zone is divided into a plurality of fine adjustment zones according to the hardness obtained before repairing, the fine adjustment zones are changed from big to small along with changes of the hardness obtained before repairing, and the distances of the coupling elements on the zones are changed from small to big. According to the zone building bionic coupling surface repairing waste machine tool guide rail, corresponding bionic coupling models are matched with the surfaces of the different hardness zones of the guide rail, the problem about uniformity during non-uniform repairing is solved, and the working years of a repaired machine tool can reach even exceed the working years of a new machine tool; and the service life of the repaired guide rail can reach 8 years to 12 years, the using years of the guide rail and the machine tool are greatly prolonged, scraping of the overall machine tool is avoided, resources wasted for manufacturing the new machine tool are saved, and a large number of resources are saved.

The invention discloses a photoperiod sensitive type sudangrass hybridization breeding method, and belongs to the technical field of forage variety breeding methods. Materials with parents or at least the female parent with photoperiod sensitive characteristics are selected for performing hybridization breeding, wherein according to F0, parent heading and blooming are induced in winter in Sanya, Hainan with 12 h or shorter day length, and hybridization grouping is completed; according to F1, authentication selection conditions are the same as that of F0; according to F2, photoperiod sensitive single plants are selected on the spring sowing condition in the North, and transplanted to Sanya, Hainan by adopting a rhizome propagation method for regrowth; regeneration stems of the plants of F2 are used for inducing blooming and seeding on the short-day condition in Sanya, Hainan, and the photoperiod sensitive characteristic verification is achieved by observing the time of a heading period; according to F3 to F5, repeated selection continues to be performed by means of the sunshine conditions of North-Sanya, Hainan; according to F6, seed reproduction is stabilized, and generations F7 and F8 are evaluated; the photoperiod sensitive sudangrass novel germplasm can be obtained. The novel germplasm bred through the breeding method enriches a sudangrass germplasm resource gene pool.

The invention relates to the technical field of pasture resource utilization, in particular to a method for cultivating honeysuckle flower number 2. The method includes: (1) cultivating parent strong roots; (2) hybridizing and combining parents; (3) domesticating resistance of the honeysuckle flower number 2 progressively; (4) domesticating cold resistance of the honeysuckle flower number 2 progressively. The cultivated honeysuckle flower number 2 cultivated by the method has the advantages of (1) wide growing area, (2) tolerance to barren soil, (3) tolerance to draught, wet and high temperature, (4) rich roots, strong tillering capability, (5) relative resistance to low temperature, (6) high plants, growing speed and output, and (7) rich nutrients including amino acid and micronutrient, crude protein content of fresh honeysuckle flower number 2 reaches to 8.21%, equivalently the crude protein content of the dry honeysuckle flower number 2 reaches to 10.6%, the crude protein content is one percent point more than that of rice, both beasts and birds love to eat, and the honeysuckle flower number 2 is a great grass variety with multiple functions.

The invention relates to a method for producing cecropins by using alfalfa as a bioreactorand discloses a cecropin B (CB) and a hybrid cecropin B (CB2 and CB3). The method includes inserting a CaMV35S promoter in a plant expression body pCAMBIA1390 to obtain pCAMBIA1390R; inserting CB, CB2 and CB3 genes respectively, and transforming the plant expression body into the alfalfa through the agrobacterium mediated transformation to obtain a transgenic alfalfa. The experiment shows that the CB, CB2 and CB3 genes are integrated into a genome of the alfalfa, the transgenic alfalfa has inhibitory activities to staphylococcus aureus and salmonella, but wild alfalfas do not have inhibitory activities, and the bacteriostatic activity of a CB3 transgenic plant is the highest. The alfalfa has the advantages of strong stress resistance, wide applicable range, long utilization periods, strong reproducibility and multiple harvest times each year. As an antibacterial peptide gene is transformed into the transgenic alfalfa, the disease resistant capability is improved; the cost for producing the cecropin B is greatly reduced by using the transgenic alfalfa as a bioreactor.

The invention discloses a method for cultivating acclimatized pennisetum alopecuroides 5#. The method comprises the following steps: (1) cultivating parent strong root systems; (2) carrying out parent hybridized combination; (3) acclimatizing resistance characteristic of the acclimatized pennisetum alopecuroides 5#; and (4) acclimatizing progressive type cold resistance characteristic of the acclimatized pennisetum alopecuroides 5#, wherein the parent hybridized combination in the step (2) means carrying out combination cultivation by adopting a back-cross method in a manner of taking napier grass as a paternal parent and taking African pennisetum alopecuroides as a maternal plant. The acclimatized pennisetum alopecuroides 5# planted by adopting the method for cultivating the acclimatized pennisetum alopecuroides 5#, disclosed by the invention, completely has the characteristics, i.e., special barren resistance, drought resistance, moisture resistance and high-temperature resistance of acclimatized pennisetum alopecuroides 2#, meanwhile, the growth speed is higher, the yield is higher, and the nutrients are richer.

The invention relates to a high-efficiency supplementary feed for a dairy cattle. The high-efficiency supplementary feed comprises the following components of fatty acid calcium, extruded soybean, corn gluten meal, nicotinic acid, vitamin B12, vitamin B1, coated choline, biotin, bacillus subtilis microbial inoculums, vitamin E and baking soda. According to the high-efficiency supplementary feed, the contents of lactoprotein, milk fat and milk dry materials in fresh and raw milk of the dairy cattle can be remarkably increased, the feed palatability is improved, the immunity of the organism of the dairy cattle is enhanced, the stress is reduced, the recovery of postpartum body condition of the dairy cattle is facilitated, the elimination rate of the dairy cattle is reduced, the service life of the dairy life is prolonged, the feeding level of the dairy cattle is improved, the economic income of a dairy cattle farmer is increased, and the application prospect is wide.

The invention discloses a lactating sow compound feed capable of relieving astriction under the sow heat stress condition. The lactating sow compound feed is prepared from the raw materials in ration:corn, 46% soybean meal, soybean hull, wheat flour, soybean oil, complex vitamin, mineral elements, probiotics, phytase, beta-glucanase, xylanase, 98% L-lysine hydrochloride, 98% L-threonine, 99% DL-methionine, tryptophane, valine, 60% choline chloride, table salt, sodium bicarbonate, calcium carbonate, calcium monohydrogenphosphate, glucose and fish meal. A high-energy high-protein daily ration design idea is utilized, excellent protein raw materials are utilized, an ionic equilibrium technology is utilized, and the soybean hull is utilized in a large proportion; compared with traditional daily ration, the lactating sow compound feed can remarkably improve feed intake and dietary fiber intake of sows in a lactation period and effectively relieves astriction situation; sow backfat loss isreduced, weaning weights of piglets and utilization periods of the sows are indirectly improved.

The invention relates to a breeding mother rabbit pellet feed which is prepared and processed by an energy raw material, a fiber feed, protein, a complex trace element premix, a multivitamin premix, a mineral premix, an enzymic preparation, a feed mycotoxin adsorbent and the like. The breeding mother rabbit pellet feed specifically comprises the following components by weight percent: 13.10 of selected high-quality corns, 10.00 of flour middling, 13.00 of wheat bran, 36.00 of alfalfa meal, 13.00 of 43% soybean meal, 2.00 of beer yeast powder, 5.00 of glucose, 3.00 of garlic powder, 1.13 of mountain flour, 1.28 of calcium hydrophosphate, 0.28 of salt, 2.00 of a special premix for breeding mother rabbits, 0.10 of detoxified toxin, 0.01 of an anti-oxidant and 0.10 of an antimildew agent. The breeding mother rabbit pellet feed provided by the invention has the advantages of promoting the growth performance of baby rabbits and enhancing immunity, increasing the birth rate of mother rabbits, and the birth weight and survival rate of the baby rabbits, prolonging the utilization period of the breeding mother rabbits, improving the disease resistance of the baby rabbits, and improving the economic efficiency of farmers.

The invention discloses a recovery, utilization and management method for black soil mountain vegetation, and belongs to the technical field of the recovery, utilization and management of degraded grassland vegetation in alpine regions. The method includes content of the planting area selection, grass seed selection, sowing modes, sowing amount, sowing time, sowing depths, fences, rodent control and agronomic measures of black soil mountain degraded grassland vegetation recovery, and the reasonable utilization and scientific management after planting. The method is suitable for the planting and utilization of black soil mountain degraded grassland vegetation that the thickness of a soil layer is more than 15 cm and the slope is greater than or equal to 15 degrees.

The invention provides a pinus sylvestris ssp.kulendensis and forage plant alfalfa and caragana korshinskii kom interplanting method in moderate-severe saline-alkali soil. The method includes the following steps that S1, sampling is performed to measure soil salinity and alkalinity of moderate-severe saline-alkali soil, and the interplanting planting ratio of pinus sylvestris ssp.kulendensis, alfalfa and caragana korshinskii kom is determined; S2, biological bacterium fermentation fertilizer is applied to implementation segment soil, phosphorus gypsum is used in cooperation, and then deep ploughing is performed; S3, moderate-severe saline-alkali soil is prepared, a ridging soil preparation mode is adopted during soil preparation, the soil is divided into a plurality of square fields, and drainage ditches are formed in the periphery of each square field in an excavation mode; S4, interplanting is performed in the mode that pinus sylvestris ssp.kulendensis is planted in advance, and then alfalfa and caragana korshinskii kom are planted in an interplanting mode; S5, maintenance management is performed on interplanting field, and alfalfa and caragana korshinskii kom are harvested regularly. The interplanting method can effectively solve a series of problems that falfa and caragana korshinskii kom forage plants cannot grow in moderate-severe saline-alkali soil, and salinity and alkalinity of moderate-severe saline-alkali soil are improved.

The invention relates to a method for performing natural soil greening on low-lying saline soil by using a soil conditioner containing chitosan. According to the formula of the soil conditioner, the soil conditioner comprises, by weight parts, 32-34 parts of fermented deer manure, 8-10 parts of sorghum straw powder, 5-7 parts of bentonite, 6-8 parts of biogas residue, 3-5 parts of phosphorite powder, 2-4 parts of chitosan, 2-4 parts of fish bone meal, 1-3 parts of peanut cake, 1-3 parts of egg-shell meal, 2-4 parts of soybean meal, 1-3 parts of ammonium bicarbonate, 1-3 parts of ammonium phosphate, 1-3 parts of ammonium chloride ferric sulfate, 1-3 parts of magnesium hydrogen phosphate, 0.5-0.7 part of phenylacetic acid, 1-3 parts of amino acid salt, 0.2-0.4 part of sodium nitrophenolate, 0.2-0.4 part of brassin, 0.2-0.4 part of gibberellin, 0.1-0.3 part of methanohalophilus zhilinae, 0.1-0.3 part of bacillus coagulans, 0.1-0.3 part of saccharomyces cerevisiae, 0.1-0.3 part of azotobacter vinelandii and 0.1-0.3 part of aspergillus oryzae.

The invention discloses vitamin-containing premixed feed for replacement gilts. The vitamin-containing premixed feed comprises vitamin A, vitamin D3, 25-hydroxyvitamin D3, vitamin E, vitamin K3, vitamin B1, vitamin B2, vitamin B6, vitamin B12, nicotinamide, D-pantothenic acid, folic acid, D-biotin, vitamin C, an antioxidant and rice hull powder. With the adoption of the vitamin-containing premixed feed for the replacement gilts, special vitamin nutrition requirements of the replacement gilts can be met sufficiently, the health level of the replacement gilts is enhanced, the optimal physiogenesis level of the replacement gilts is adjusted, regular oestrus of the replacement gilts is guaranteed, and foundation is established for later production performance and utilization years.

The invention discloses a preparation method of a special feed for sows at the late pregnancy. The preparation method comprises the following steps of mixing puffed corn flour with fish meal, soybeanmeal and beer yeast, and performing crushing to obtain first materials; mixing xanthan gum with bentonite, monoglycerides and water, performing warming and stirring, adding corn starch, performing mixing, performing warming and pre-gelatinizing, lowering the temperature, adding soybean oil and xylooligosaccharide, performing stirring and performing spray drying to obtain second materials; uniformly mixing linoleic acid with calcium formate, complex vitamins, chromium methionine, a ferric compound amino acid complex, taurine, thymol, a probiotic preparation, the second materials and choline chloride to obtain third materials; and uniformly mixing the first materials with the third materials, calcium hydrogen phosphate, table salt, stone powder, lysine, methionine, threonine, magnesium sulphate and composite trace elements, performing granulation, performing enveloping with an enveloping agent, and performing drying to obtain special feed for sows at the late pregnancy. The sow childbirth is shortened, the vitality of piggies is reinforced, and the new-born weight of the piggies is increased.

The invention belongs to the technical field of fermented feed, and especially relates to high protein woody fermented feed and a preparation method thereof. The feed prepared from raw materials includes, by weight percentage, 40-70% of woody plant leaves, 10-20% of corns, 10-20% of wheat bran, 0.3-5% of organic mineral elements, 0.5-2% of salt, 1-3% of sugar, and 0.1-0.5% of compound biological bacteria, with the balance being water. The feed is reasonable in formula, simple in manufacturing method and high in feed nutritional value.

The invention provides a ganoderma lucidum super-strong immune feed additive, a preparation method thereof and feed including same. The ganoderma lucidum super-strong immune feed additive is rich in nutritions of protein, nucleic acid. Not only is immunity of poultry improved effectively, but also a bidirectional regulating function can be performed on organs of the poultry. Furthermore poultry survival rate is improved, and the utilization year of the poultry is prolonged. Furthermore, through culturing ganoderma lucidum strains in a specific culture medium and performing processes such as drying and crushing on harvested ganoderma lucidum mycelium, the additive is prepared. The ganoderma lucidum super-strong immune feed additive has advantages of abundant nutrition, high quality, high effect, etc. Through adding the ganoderma lucidum super-strong immune feed additive into common feed, the immunity of the poultry is effectively improved, and furthermore a good bidirectional adjusting function is performed on the organs of the poultry. Furthermore the ganderma lucidum super-strong immune feed additive, the preparation method and the feed including same have advantages of improving poultry survival rate, prolonging utilization year of the poultry, reducing cost, effectively realizing quick growth of the poultry, and improving economic benefit.

The invention relates to the technical field of oil fume treatment, in particular to an automatically controlled intelligent internet-of-things oil fume purification monitoring device comprising a distribution box, an intelligent power source, an oil fume purifier, a fan and a sensor. Three-phase power is connected to the distribution box externally; the distribution box is connected to the inputterminal of the intelligent power source through a wire; the output terminal of the intelligent power source is connected with a power terminal of the oil fume purifier by a wire; the distribution boxis also connected to a power terminal of the fan through a wire; and the sensor is installed at an air outlet of the fan. The sensor is connected with a data collection terminal of the intelligent power source through a data line. The oil fume degree is obtained by sensing the current value in the oil fume purifier; and thus the user and the functional department are informed of warning information of cleaning the oil fume purifier. The false reporting is prevented. Only the power line connected to the power controller originally needs to be connected to the intelligent purified electrostaticpower supply. The automatically controlled intelligent internet-of-things oil fume purification monitoring device is simple and is used conveniently; and the cost is saved.

The invention discloses a threonine chelate named threonine manganese, a preparation method thereof comprises the following steps that: sulfate of manganese or crystalline hydrate of sulfate of manganese having a molar ratio of (0.5-1.1):2 is mixed with threonine aqueous solution, followed by reaction at pH value of 4-8 at the temperature of 60-100 DEG C under the protection of inert gases, 0.5-6 hours later, reaction product is obtained; the reaction product is subjected to vacuum concentration or is extracted by an organic solvent, and is then dried and crushed to obtain threonine manganese finished product. The threonine manganese of the invention can serve as an additive of animal feed in order to effectively promote growth of animals, enhance resistance of animals and raise utilization rate of feed.

The invention discloses a synchronous estrus and artificial insemination method for inducing batch production of Hu sheep, and belongs to the technical field of efficient breeding of sheep. Accordingto the method provided by the invention, a hormone combination of FGA + PGF2 alpha + PMSG is used for inducing synchronous estrus of the Hu sheep, the vaginal plug burying time is set to be 11 days, and the hormone injection time is 2 days before vaginal plug removal. By adopting the method, the vaginal plug loss rate and the vaginal inflammation rate of ewe can be reduced, ovarian cyst is reduced, meanwhile, the semen deposition frequency and the semen deposition time point are determined, the operability is high, the cost can be saved, and the breeding benefit is improved.

The invention discloses a breeding method of a photoperiod high-sensitive BMR sorghum sterile line, and belongs to the technical field of breeding methods of forage varieties. According to the breeding method, a BMR sorghum maintainer line serves as a female parent, photoperiod high-sensitive forage sorghum serves as a male parent, hybridization and combination of the female parent and the male parent are implemented in Sanya city, Hainan province, the photoperiod high-sensitive BMR sorghum maintainer line is bred by the aid of differences of long and short sunshine time, selection standards of the maintainer line include that non-heading or late-heading brown midrib single plants at a growth stage are selected under north spring sowing long sunshine conditions, heading brown midrib singleplants within 60 days are selected under short sunshine conditions in Sanya city, Hainan province, and continuous breeding of six generations is implemented to obtain the photoperiod high-sensitive BMR sorghum maintainer line. Backcross breeding of the maintainer line and a common sorghum sterile line is implemented, completely sterile brown midrib single plants with agronomic characters consistent with those of the photoperiod high-sensitive BMR sorghum maintainer line are selected in backcross population to obtain the photoperiod high-sensitive BMR sorghum maintainer line. According to themethod, a sorghum sterile line gene bank is enriched.