64 results about "Hydroxymerodesmosine" patented technology

The present invention discloses a Fenneropenaeus shrimp low fish meal feed, consisting of the components and the weight percentages that: 15 percent to 23 percent of fish meal, 0 percent to 6 percent of barmy beam pulp, 23 percent to 30 percent of beam pulp, 10 percent to 24 percent of peanut meal, 4 percent to 5percent of beer yeast, 6 percent to 7 percent of shrimp meal, 0 percent to 4 percent of squid meal, 0.2 percent to 0.5 percent of lysine sulphate, 0.09 percent to 0.4 percent of hydroxylv methionine calcium, 0 percent to 0.11 percent of L- threonine, 1 percent to 1.25 percent of fish oil, 0 percent to 1 percent of corn oil, 0 percent to 1 percent of bean oil, 1.5 percent to 2 percent of soyabean lecithin, 17 percent to 23 percent of flour, 0.1 percent of vitamin C phosphate ester, 0.5 percent of choline chloride, 0.2 percent to 0.5 percent of multidimensional premix, 1 percent of phosphate and 0.5 percent to 1 percent of polymineral premix. The feed can not only reduce the use of the fish meal, but also have no bad influence to the growth of the Fenneropenaeus shrimp and the feed efficiency under the comparatively low protein level, thus reducing the feed cost and decreasing the environment pollution in the process of breeding.

The invention discloses premix of organic-inorganic complex trace element. The premix of the complex trace element is added with the organic trace element and the inorganic trace element, wherein the organic trace element is hydroxyl copper methionine, ferrous fumarate, hydroxyl iron methionine, hydroxyl zinc methionine, hydroxyl manganese methionine, selenomethionine and chromium picolinate. The inorganic trace element is anhydrous cupric sulfate, anhydrous ferrous sulfate, anhydrous zinc sulfate, anhydrous manganese sulfate and chromium nicotinate. The invention has the beneficial effects of greatly reducing the cost under no influence on the use effects, higher absorption and utilization and replacement of high copper, significant reduction on the discharge of the trace element, alleviating the adverse environmental impact from the culture production, effective protecting vitamin from being damaged, extending the product warranty period, increasing the myoglobin level, improving the carcass quality, enabling the animal fur to be ruddy and shiny, promoting the animal growth, improving the return of feed, promoting the body immunity and the anti-stress ability and promoting the reproductive performance of breeding stock and breeding bird.

The invention provides a preparation method of hydroxy methionine salt and a compound, comprising the following steps: a. feeding metal hydroxide or basic metal oxide or amphoteric metal oxide and 2-hydroxy-4-methylthiobutyricacid into a closed and corrosion resistant reaction kettle to react for 0.5-12h according to a stoichiometric ratio, taking the low-boiling polar organic solvent or the mixed solvent thereof with water as the reaction medium, stirring, separating the target product, washing and drying to obtain the products; and b. recycling the reaction medium. The preparation method of the invention has short route, no consumption of acid or alkali reagent, low cost, easily-controllable product quality, environmental friendliness and the like, thus being applicable to large-scale industrial production.

The invention discloses a special feed capable of promoting digestion and preventing diarrhoea for weaned piggies. The feed comprises the following raw materials: corn, puffing soybeans, fermented peanut meal, permeate high protein powder, plasma protein powder, pineapple leaf meal, mulberry leaf powder, silkworm chrysalis powder, earthworm powder, phytase, plant essential oil, calcium formate, calcium bis(2-hydroxy-4-(methylthio)butyrate), lactose, mannan oligosaccharides, glyceryl tributyrate, composite trace elements, complex vitamins, compound amino acid, spina date seeds, haws, fleeceflower roots, Chinese yam, Chinese wolfberry fruits, nanometer zinc oxide, nanometer titanium dioxide, dried marine algae powder, and a microecological preparation. The special feed capable of promoting digestion and preventing diarrhoea for weaned piggies, provided by the invention, is reasonable in formula, comprehensive in nutrients, and easy to digest, can meet the nutritional requirements of the growth of the piggies, and can improve the immunity of the piggies, and prevent the diarrhoea of the piggies. According to the feed, the food consumption of the piggies is increased, and the growth of the piggies is promoted.

The invention discloses a feed capable of increasing the lactation yield of sows at a lactation period. The feed comprises the following raw materials: corn, peanut meal, cottonseed meal, rapeseed meal, flour, wheat bran, horseradish tree leaf meal, fish meal, dicalcium phosphate, calcium bis(2-hydroxy-4-(methylthio)butyrate), threonine, tryptophan, table salt, molasses, xylooligosaccharide, plant essential oil, choline chloride, spirulina powder, chlorella powder, green alga powder, composite trace elements, composite vitamins, a bacillus preparation, fumaric, radix puerariae, medicated leaven, a sugarcane extract, radix codonopsis, soybeans, glossy ganoderma, black beans, spina date seeds, radix scutellariae, pilose bushclover herbs, Chinese yam and licorice roots. The feed capable of increasing the lactation yield of sows at a lactation period, provided by the invention, is reasonable in formula and comprehensive in nutrients, and can meet the nutritional requirements of the sows at the lactation period. The lactation yield of the sows can be increased, and besides, the quality of sow milk is improved.

The invention discloses a compound feed for small laying ducks during egg-laying peak time. The compound feed consists of wheat, barley, rice residue powder, yellow rice wine lees, soybean dregs, rice bran, cottonseed meal, calcium hydrophosphate, stone dust, compound multivitamins, a compound mineral composition, a compound enzyme, 50 percent vitamin E (VE), 95 percent high temperature-resistant choline chloride, 98 percent L-lysine, 84 percent hydroxyl methionine calcium, an antioxidant, a mildew preventive, bacillus subtilis and zeolite powder. By using the feed, the cost can be reduced effectively, the using amount of corn can be reduced, the feed intake of laying ducks in high-temperature summers can be improved effectively, the laying rate is guaranteed, the ammonia concentration in a duck shed is reduced effectively, and the rearing environment is improved.

The invention discloses an organic microelement premix for an egg chicken, which comprises methionine hydroxyl-copper, ferrous fumarate, methionine hydroxyl-iron, methionine hydroxyl-zinc, methionine hydroxyl-manganese, seleno methionine and chromium picolinate. The organic microelement premix is used for feeding the egg chicken; when in use, the premix is added into a complete feed in a proportion of 0.1%-0.15%. In the invention, the utilization rate of microelements is greatly improved; experiments prove that the utilization rate of organic microelements is improved by about 5 times compared with inorganic microelements; as absorption and utilization rates are improved, the waste of resources is reduced, the discharge of the microelements is obviously reduced, and adverse effects on the environment are relieved; moreover, the immunity of the organism is improved, the disease resistance is enhanced, and the mortality is reduced; therefore, the quality of an eggshell is improved, the eggshell is smooth, and has bright color, and the nutritive value of a chicken egg is improved.

The invention provides a pre-mixed feed for improving the bone mineral density and eggshell quality and a preparation method thereof, belonging to the technical field of egg chicken feed. The method comprises the following components in parts by weight: 130-170 parts of calcium hydrogen phosphate, 100-160 parts of stone powder, 100-150 parts of shell powder, 10-40 parts of calcium malate, 20-27 parts of calcium hydroxymethionine, 0.5-2 parts of lactobionic acid, 0.5-2 parts of agaricus blazei and 0.5-2 parts of colostrum alkaline protein, 2-5 parts of hydroxyl vitamin D, 2-8 parts of phytase,2-5 parts of composite enzyme preparation, 2-5 parts of microecological agent, 0.1-0.4 parts of soybean flavone, 0.1-0.4 parts of vitamin K2, 0.5-2 parts of bone collagen, 1-4 parts of polydextrose, 0.5-2 parts of fructo-oligosaccharide, 0.5-2 parts of rhizoma drynariae, 0.5-2 parts of fructus psoraleae and the like. In order to improve the calcium utilization rate, a brand new idea of calcium utilization is provided, that is, three systems of the calcium supplement of the laying hens, that is, a calcium supplementing system, a calcium promotion absorption system and a health system of improving the gastrointestinal.

The invention discloses a feed formula and a preparation method thereof and aims to solve the problem that DHA (Docosahexenoic Acid), EPA (Eicosapentaenoic Acid) and selenium element are enriched in eggs. The feed comprises the following components: first-class corn, 43-percent soybean meal, 60-percent corn protein powder, alfalfa meal, stone powder, stone grains, 50-percent deep sea fish oil, linseed oil, selenium yeast, trace elements, vitamin premix, calcium hydrophosphate, vitamin E, 70-percent lysine sulphate, 84-percent calcium 2-hydroxy-4-(methylthio)butyrate and sodium chloride. After laying hens, which are more than 180 days old, are fed by the feed disclosed by the invention, the contents of omega-3 polyunsaturated fatty acids (DHA and EPA) and the selenium element in egg products of the laying hens are respectively and remarkably higher than those of general eggs, the content of cholesterol in the egg products is 50 percent lower than that of the general eggs, and the requirements of enrichment in DHA and EPA, selenium and low cholesterol of health eggs eaten by people are met.

The invention belongs to technical field of premixed feeds for pigs, in particular to a trace element premixed feed for piglets and a preparation method of the trace element premixed feed. The trace element premixed feed comprises the following raw materials: basic cupric chloride, basic zinc chloride, hydroxymethionine manganese, hydroxymethionine iron, hydroxymethionine zinc, yeast selenium, calcium iodate, cobalt chloride, mineral oil, calcium stearate, ethoxyquinoline and the balance of medical stone powder. The reasonable combination application of all components of the trace element premixed feed can meet requirements of piglets, promote the growth rate of the piglets, and reduce the diarrhea incidence rate of the piglets; and the mixing uniformity of the trace element premixed feedis improved, and the pollution to environment by trace elements in feces of piglets is reduced.

The invention provides a feed additive for controlling recessive mastitis of a cow and reducing somatic cells and a preparation method thereof. The feed additive comprises Chinese herbal medicines, vitamins, minerals and probiotics and concretely, comprises 100 to 150g of licorice root, 50 to 100g of radix angelicae sinensis, 80 to 120g of radix astragali, 80 to 120g of pericarpium citri reticulatae, 50 to 100g of dandelion, 80 to 100g of fructus arctii, 50 to 100g of ligusticum wallichii, 100 to 150g of motherwort, 50 to 80g of Chinese violet, 60 to 100g of seed of cowherb, 50 to 80g of acanthopanax root, 50 to 80g of myrrh, 50 to 80g of white paeony root, 80 to 120g of honeysuckle, 80 to 120g of Houttuynia cordata, 50 to 100g of red sage root, 50 to 100g of pilose asiabell root, 30 to 50g of vitamin A (500000 IU / g), 20 to 30g of vitamin D3, 30 to 50g of vitamin E (5000000 IU / g), 150 to 200g of zinc hydroxymethionine, 10 to 20g of yeast selenium, 80 to 120g of saccharomycetes (20 billion cfu / g) and 10 to 20g of Bacillus licheniformis (20 billion cfu / g). The feed additive can improve the physiological functions of dairy cows, reduce the incidence of mastitis, improve the anti-oxidant capacity, reduce somatic cells and improve the quality of milk.

The invention provides Nibea albiflora juvenile fish compound feed with fish meal replaced by fermented soybean meal. The compound feed is prepared from, by weight, 14-70 parts of fish meal, 10-67 parts of fermented soybean meal, 1-6 parts of fish oil, 1-6 parts of soybean oil, 5-13 parts of dextrin, 0.5-2.5 parts of soybean lecithin, 0.2-1.6 parts of seawater fish compound premix feed, 0.1-0.6 part of choline chloride, 0.5-2.0 parts of monocalcium phosphate, 0.05-0.2 part of hydroxyl methionine, 0.02-0.08 part of ethyoxyl quinoline and 0.3-15 parts of cellulose. Compared with the prior art, on the premise of not affecting healthy growth of juvenile fish, the use amount of the fish meal can be reduced to about 43% or even about 25%, and feed cost is greatly reduced. The protein source amino acid is balanced, the compound feed is high in palatability, and beneficial for fish feed ingestion and feed digestion and absorption, and it is proved through experiments that the feed can ensure healthy growth of the juvenile fish.

The invention relates to a feed additive capable of improving egg shell quality in late laying period of laying hens. The feed additive capable of improving egg shell quality in late laying period oflaying hens is prepared by mixing the following ingredients in parts by weight: 5-8 parts of Rovimix Hy.d, 500-1000 parts of chelated zinc methionine hydroxyl analogue, 500-1000 parts of chelated manganese methionine hydroxyl analogue, 500-1000 parts of chelated copper methionine hydroxyl analogue, 20000-30000 parts of fine stone powder, and 50000-60000 parts of coarse stone powder. The feed additive disclosed by the invention is capable of improving strength and thickness of egg shell so as to reduce egg breakage rate.

The invention discloses a pelodiscus sinensis fodder containing low-protein fish meal added with methionine hydroxy analog-Ca. The raw material of the pelodiscus sinensis fodder comprises white fish meal, soy protein concentrate, fermented soybean meal, extruded soybean, chicken powder, squid powder, beer yeast, alpha-starch, gluten flour, zeolite powder, multivitamin, a compound mineral substance, choline chloride, glycine betaine, sodium dihydrogen phosphate and methionine hydroxy analog-Ca. According to the pelodiscus sinensis fodder disclosed by the invention, the methionine hydroxy analog-Ca is taken as the additive and is added into the pelodiscus sinensis fodder containing low-protein fish meal, so that the amino acid balance in the fodder is effectively kept, the growth promotion effect is excellent and the nutritional requirement for the growth of the pelodiscus sinensis is met. Compared with the traditional pelodiscus sinensis fodder taking fish meal as the main protein source, the pelodiscus sinensis fodder containing low-protein fish meal added with methionine hydroxy analog-Ca has the advantages that the protein content of the fodder is less than or equal to 44% and the additive amount of the fish meal is less than or equal to 26%. The fodder provided by the invention is capable of saving the dosage of the fish meal in the pelodiscus sinensis fodder and lowering the cost of the fodder, is ecological and environmentally friendly, and is capable of increasing the comprehensive breeding benefit.

The invention discloses a hydroxyl chelate methionine of which the name is hydroxyl nickel methionine and the molecular formula is (C5H9O3S)2Ni. The hydroxyl nickel methionine is obtained by mixing nickel sulfate or the crystalline hydrate of nickel sulfate with hydroxyl methionine solution and alkali for reaction, can be used as animal feed addictive for application, has simple application method and convenient operation, and gets obvious feeding effect after feeding swine, poultry and ruminants.

The invention relates to a composite acidulant for a feed as well as a preparation method and application of the composite acidulant. The composite acidulant for a feed comprises the following components in parts by weight: 20-25 parts of fumaric acid, 9-11 parts of benzoic acid, 15-18 parts of methionine hydroxy analog-Ca, 5-7 parts of formic acid, 2-3 parts of sorbic acid, 8-11 parts of phosphoric acid, and 30-40 parts of silica gel. When being used, the composite acidulant is added to a basic ration for piggies in the proportion of the composite acidulant to the basic ration being 0.2-0.4wt% for feeding the piggies. Compare with the prior art, the composite acidulant disclosed by the invention has the advantages that the growth and development and the intestinal tract health of weaned piggies can be improved, the total number of harmful bacteria is reduced, the total number of beneficial bacteria is increased, and the composite acidulant also has the functions of improving the oxidation resistance and the immunity of animals. Besides, the composite acidulant contains mineral acid and organic acid, and the mineral acid is used, so that the addition cost is reduced, and the economic benefits are increased.

The invention discloses a preparation method of a modified methionine hydroxy analog-calcium feed additive. The preparation method comprises the following steps of: conducting reaction on acraldehyde taken as a main raw material and methyl mercaptan in a specially-sealed container under the action of a catalyst to generate methylthiopropanal; synthesizing 2-hydroxyl-4methylthio-butyronitrile by the generated methylthiopropanal and hydrocyanic acid under the action of the catalyst; hydrolyzing in the existence of concentrated sulphuric acid to generate 2-hydroxyl-4methylthio-bulyrate; neutralizing by using a saturated calcium hydroxide solution; adding vinegar, montmorillonite flour, polyethylene glycol 4000 and poplar bark powder to refine a finished modified methionine hydroxy analog-calcium feed additive. According to the whole production process, the scientific and technological content is high, the path is good, the biological value is high, the production cost is low, the production process is simple, raw material consumption is low, byproducts are few, three-waste discharge does not exist in the whole production process and environmental pollution is low.

The invention relates to a production method of a feed additive, and particularly discloses a preparation method of a feed-grade methionine hydroxy manganese chelate. The preparation method includes the steps that firstly, a metered sodium hydroxide reagent is added into an inorganic salt water solution of manganese, and a solid substance is obtained; secondly, the solid substance is washed to remove soluble components in the solid substance; thirdly, water is added into washing residues for homogenization; fourthly, 2-hydroxy-4-(methylthio)butyric acid is added for a chelation reaction, wherein the molar ratio of manganese in the homogenate to 2-hydroxy-4-(methylthio)butyric acid is smaller than or equal to 0.5; fifthly, the reaction product is subjected to aftertreatment to obtain the product. The method has the advantages that the methionine hydroxy manganese chelate product with higher purity can be prepared, and the product is more suitable for serving as a feed additive; the chelation reaction rate is high, the energy consumption is low, the chelation reaction can be conducted at a high rate at the normal temperature, and the production method is simple and easy to popularize in the industry.

The invention discloses zinc hydroxymethionine for prawns. The molecular formula of the zinc hydroxymethionine is Zn(C5H10O3S)2. A preparation method of the zinc hydroxymethionine comprises the following steps of: oscillating zinc chloride and hydroxymethionine by using an ultrasonic cell crusher for 5 minutes; uniformly mixing zinc chloride and hydroxymethionine in the ratio of 1:2; adjusting the pH to 6.8-7.2 by using 0.2 mol / L of NaOH; and adsorbing with zeolite powder, drying and smashing. Due to the adoption of the zinc hydroxymethionine, the using amount of zinc in a feed can be reduced by 50 percent, the biological utilization ratio of zinc is increased, zinc emission is reduced simultaneously, and environmental protection is facilitated; and the used raw materials have stable resources, low prices and simple production processes.

The invention provides special feed for breeding season of sillago sihama. The special feed comprises the following raw material by weight percent: 21.0-28.0% of fish meal, 5.0-8.0% of inkfish powder, 2.0-5.0% of krill meal, 3.0-5.0% of chicken meal, 20.0-25.0% of bean pulp, 4.0-6.0% of corn gluten meal, 1-5% of soybean protein powder, 20.0-24.0% of flour, 1.5-2.5% of soybean phospholipid, 1.0-2.0% of soybean oil, 1.5-2.5% of fish oil, 0.5-1.0% of decavitamin, 0.1-0.2% of vitamin C, 0.05-0.1% of vitamin E, 1.5-2.0% of composite mineral, 1.0-1.5% of calcium dihydrogen phosphate, 0.2-0.3% of choline chloride, 0.1-0.3% of coated lysine, 0.1-0.3% of methionine hydroxy analog-Ca, 0.1-0.2% of coated threonine, 0.1-0.2% of taurine, and 1.0-3.0% of bentonite. The feed greatly improves the growth, health and oviposition situations of sillago sihama during breeding season, and is suitable for food intake of sillago sihama during breeding season.

The invention discloses a compound feed for small laying ducks during egg-laying peak time. The compound feed consists of wheat, barley, rice residue powder, yellow rice wine lees, soybean dregs, rice bran, cottonseed meal, calcium hydrophosphate, stone dust, compound multivitamins, a compound mineral composition, a compound enzyme, 50 percent vitamin E (VE), 95 percent high temperature-resistant choline chloride, 98 percent L-lysine, 84 percent hydroxyl methionine calcium, an antioxidant, a mildew preventive, bacillus subtilis and zeolite powder. By using the feed, the cost can be reduced effectively, the using amount of corn can be reduced, the feed intake of laying ducks in high-temperature summers can be improved effectively, the laying rate is guaranteed, the ammonia concentration in a duck shed is reduced effectively, and the rearing environment is improved.

The invention discloses a special feed capable of promoting growth and improving meat quality of fattening pigs. The special feed comprises the following raw materials of corn, wheat bran, horseradish tree leaf powder, pineapple leaf powder, sweet potato seedling powder, tea grounds, aloe dry powder, alfalfa powder, spirulina powder, green alga powder, silkworm chrysalis powder, loach powder, table salt, dicalcium phosphate, calcium bis(2-hydroxy-4-(methylthio) butyrate), glutamic acid, molasses, xylooligosaccharide, essential oil, malic acid, a compound additive, a microbial preparation, spina date seeds, Chinese wolfberry fruits, albizia bark, gynostemma pentaphyllum and Chinese yam. The special feed capable of promoting the growth and improving the meat quality of the fattening pigs, provided by the invention, is comprehensive in nutrition and reasonable in formula, can increase the food consumption of the fattening pigs, can promote the growth of the fattening pigs and can improve the quality of pork.

The invention relates to a method for preparing a solid 2-hydroxy-4-(methylthio) butanoic acid, which comprises the following steps of: a. utizling a methionine hydroxy solution to prepare methionine hydroxy calcium or hydroxy methionine barium; b. mixing the methionine hydroxy calcium or hydroxy methionine barium obtained in a step a with concentrated sulfuric acid according to a stoichiometric ratio, adding a reaction medium B, reacting for 0.5-6h at a temperature of between room temperature and 50 DEG C, stirring and carrying out solid-liquid separation to obtain a methionine hydroxy solution; and c. distilling the methionine hydroxy solution obtained in a step b in a reduced pressure to remove an organic solvent, and after drying the resulting solid, obtaining the solid 2-hydroxy-4-(methylthio) butanoic acid. Compared with the traditional molecular distillation method, the method provided by the invention has the advantages of simple operation, no needs for a short range evaporator or thin film evaporator, and low cost.

The invention relates to a production method of a feed additive, and particularly discloses a preparation method of a feed-grade methionine hydroxy copper chelate. The preparation method includes the steps that firstly, a metered sodium hydroxide reagent is added into an inorganic salt water solution of copper, and a solid substance is obtained; secondly, the solid substance is washed to remove soluble components in the solid substance; thirdly, water is added into washing residues for homogenization; fourthly, 2-hydroxy-4-(methylthio)butyric acid is added for a chelation reaction, wherein the molar ratio of copper in the homogenate to 2-hydroxy-4-(methylthio)butyric acid is smaller than or equal to 0.5; fifthly, the reaction product is subjected to aftertreatment to obtain the product. The method has the advantages that the methionine hydroxy copper chelate product with higher purity can be prepared, and the product is more suitable for serving as a feed additive; the chelation reaction rate is high, the energy consumption is low, the chelation reaction can be conducted at a high rate at the normal temperature, and the production method is simple and easy to popularize in the industry.

The invention discloses a hydroxyl chelate methionine of which the name is hydroxyl nickel methionine and the molecular formula is (C5H9O3S)2Ni. The hydroxyl nickel methionine is obtained by mixing nickel sulfate or the crystalline hydrate of nickel sulfate with hydroxyl methionine solution and alkali for reaction, can be used as animal feed addictive for application, has simple application method and convenient operation, and gets obvious feeding effect after feeding swine, poultry and ruminants.

The invention relates to a premix feed containing organic trace elements, for chicken and a preparation method of the premixing feed. The premix feed comprises the following raw material components ofan iron glycine complex (chelated) compound, an iron amino acid complex, a zinc methionine hydroxy analog complex (chelated) compound, a manganese methionine complex (chelated) compound, a cobalt acetate premixing agent and a carrier. The invention further relates to the preparation method of the premix feed containing the organic trace elements for chicken. The preparation method comprises the following steps of adding the obtained feed to a complete formula feed for laying hens and breeding hens according to a ratio being 1-2kg / ton for using. When the premix feed is used for the laying hens, the laying rate is high, the egg weight is high, the egg-to-feed rate is high, the strength of eggshells is high, and broken egg yield is low; and when the premix feed is used for the breeding hens, the breeding performance is high, the breeding egg fertilization rate of breeding eggs is high, the qualified rate of the breeding eggs is high, and the hatching rate is high. The premix feed disclosed by the invention has the characteristics of being high in digestivity, high in biological value, and sufficiently meets the characteristic of nutrient requirements of trace elements to the layinghens and the breeding hens, and is environmentally-friendly, so that environmental pollution pressure is reduced. The preparation method disclosed by the invention is high in mixing uniformity and simple in technology, and can effectively control the feed cost.

The invention relates to a premix compound for preventing and controlling feather picking of three yellow chickens. The premix compound for preventing and controlling feather picking of three yellow chicken comprises the following raw materials by weight percentage: 5-20% of calcium bisbutyrate, 10-30 parts of anhydrous sodium sulphate, 10-30 parts of gypsum powder, 5-20 parts of vitamin C phosphate ester, 1-5 parts of saccharicterpenin, 1-5 parts of curcumin, 1-5 parts of phytase, 1-5 parts of an anti-oxidant and 10-60 parts of bentonite; and sum of the weight percentage of the components is 100%. The premix compound for preventing and controlling feather picking of three yellow chickens has the following advantages: 1) 0.5-1% of the premix compound is added, feather picking can be effectively prevented and controlled; 2) when feather picking is happened, 1-2% of the premix compound is added, feather picking can be effectively alleviated or feather picking can be treated; and 3) the raw materials for the premix compound are easily available, and cost is low.

The invention belongs to the technical field of medicament preparation and especially relates to a cattle fast dissolving tablet with calcium hydroxymethionine as a major ingredient and a preparation process of the tablet. The fast dissolving tablet provided by the invention is characterized by comprising the following components by weight percent: 10-30% of calcium hydroxymethionine, 3-10% of disodium hydrogen phosphate, 31-10% of vitamin D, 20-30% of lactose, 20-40% of mannitol, 1-5% of sodium carboxymethyl starch and 5-10% of polyethylene glycol-6000. The preparation process comprises the steps of raw material treatment, mixing, preparing particles, drying, finishing, evenly mixing and tabletting. The fast dissolving tablet is used for preventing and treating calcium deficiency of the cattle, such as osteoporosis, cleidocranial dysplasia, and calcium supplement of pregnant cows and the cows of the lactation period; the functions of the organism parathyroid glands are activated by adjusting the calcium-phosphorus ratio so that calcium in the skeleton is used and calcium absorption is promoted, and parturient paresis caused by hypocalcemia after delivery of the cows is prevented and treated; and the fast dissolving tablet is convenient to use, high in dissolving speed, high in absorptivity, good in effect and good in stability.

A continuous flow process for the preparation of one or more esters of lactic acid and 2-hydroxy-3-butenoic acid or α-hydroxy methionine analogues from a sugar in the presence of a solid Lewis acid catalyst and a solvent comprising an organic solvent and water. The invention provides a means for stabilizing a Lewis acid catalyst for use in a continuous reaction process wherein the water is present in an amount of up to or equal to 10 vol. % of the organic solvent.