33 results about "Heat-Stress Responses" patented technology

The present invention discloses a laying hen heat stress resistant feed additive. The laying hen heat stress resistant feed additive is made from the following components in parts by weight: 1-3 parts of radix astragali, 0.5-1 part of radix ophiopogonis, 1-3 parts of raw licorices, 0.5-1 part of dandelion, 3-5 parts of fructus forsythiae, 0.1-0.3 part of fructus trichosanthis, 3-5 parts of honeysuckles, 3-5 parts of radix codonopsis, 1-3 parts of rhizoma atractylodis, 3-5 parts of lotus leaves, 0.5-1 part of radix isatidis, 0.3-0.5 part of rosemary, 20-30 parts of potassium chloride, 10-15 parts of sodium hydrogen carbonate, 15-20 parts of bentonite and 5-10 parts of an adaptation promoting agent. The laying hen heat stress resistant feed additive is scientific in ratio, safe and sound, free of drug resistance and residues, and can enhance the adaptability of the laying hens to high temperature, strengthen immune function, coordinate thermal equilibrium and significantly alleviate heat stress reaction. The present invention also discloses a preparation method of the laying hen heat stress resistant feed additive. The preparation method is good in mixing homogeneity, simple in technology and easy to implement, and can applied in a large-scale industrial production.

The invention provides a compound preparation for preventing and treating heat stress syndrome of beef cattle. The compound preparation comprises the following medicated raw materials in parts by weight: 200 to 300 parts of agastache, 200 to 300 parts of rhizoma atractylodis, 100 to 200 parts of hoantchy root, 100 to 200 parts of baical skullcap root, 100 to 150 parts of costustoot and 100 to 150 parts of dried orange peel; all the medicated raw materials are smashed and then mixed well. The invention further provides a preparation method and a use method of the compound preparation for preventing and treating heat stress syndrome of beef cattle. The compound preparation is based on the theory of 'Chinese veterinary medicines', is mainly formed by compounding Chinese herbal medicines, is used for replacing frequently-used antibiotics, sedative and other medicated premix to prevent and treat heat stress response of beef cattle, and has the advantages of safety, no residue, no toxicity or harm to animals, and the like. The compound preparation is particularly applicable to high-temperature and high-humidity environments in the south in summer and can be used for preventing and treating heat stress response of growing beef cattle and fattening beef cattle in summer.

The invention belongs to the field of feed development and specifically relates to a method of preparing chicken feed by performing steam explosion on cordyceps medium residues. The method includes the following steps: (1) cutting the cordyceps medium residues into slices; (2) adding the sliced cordyceps medium residues obtained in the step (1) into a steam explosion reactor, performing explosionat a pressure of 0.5-1.5MPa and performing pressure holding for 5min; (3) mixing the exploded materials obtained in the step (2) with alternanthera philoxeroides, mulberries and starch-type ingredients and performing grinding into powder of 20-40 mesh; (4) adding biological enzymes into the powder, regulating the pH value to 6.5-8.0 and performing complete mixing and stirring for 20-43h; and (5) after stirring uniformly, taking out the mixture and performing drying, grinding and granulating. The formula of the chicken feed provided by the invention improves egg quality, reduces the breakage rate of eggshell, also relieves the heat stress reaction of chicken and increases egg production.

The invention aims at providing anti-heat stress feed additives for rabbits and a preparation method thereof. Therefore, a heat stress response of rabbits in high-temperature environments in summer is relieved, feed intake, daily gain and feed conversion are increased, the death rate is decreased, and the cost of breeding the rabbits is reduced. According to the technical scheme, the anti-heat stress feed additives for the rabbits are characterized by being prepared from, by weight, 20-50 parts of honeysuckles, 20-50 parts of spreading hedyotis herbs, 20-50 parts of milkvetch roots, 15-30 parts of coptidis rhizoma, 10-40 parts of rhizoma atractylodis macrocephalae, 10-30 parts of herba moslae, 10-30 parts of reed rhizome, 20-50 parts of cortex lycii, 10-30 parts of mesona, 20-50 parts of burdock, 10-40 parts of hawthorns, 10-30 parts Chinese magnoliavine fruits, 20-40 parts of betaine, 50-80 parts of glutamine and 5-15 parts of feed grade organic chromium.

The invention relates to a semi-closed cowshed, which has a three-side-closed and one-side-open structure. Air conditioner units are arranged on the left and right two sides in the cowshed; an NH3, CO2, H2S, temperature and humidity dynamic continuous monitoring component, an exhaust system and an automatic dung cleaning system are distributed in the cowshed uniformly. In the invention, the three-side-closed and one-side-open structure is adopted, the air conditioner units are arranged on the left and right two sides of the cowshed, and the NH3, CO2, H2S, temperature and humidity dynamic continuous monitoring component, the exhaust system and the automatic dung cleaning system are distributed in the cowshed uniformly; the temperature and humidity in the cowshed can be regulated effectively, and the content of harmful gases such as NH3, CO2 and H2S in the cowshed can be monitored in time; with the exhaust system, the air can be discharged in time and ventilation can be performed in time, which is favorable for preventing various heat stress responses of milk at a high temperature in summer; and thus, the long-lasting raw fresh milk supply and demand contradiction problem of urban milk enterprises is solved radically, the breeding benefits of individual cow breeding famers are increased, the income of the farmers is increased, and the activity of the famers is improved.

A feed additive for relaxing the hot stress reaction of milk cow in the summer is prepared from organochromium, cultured yeast, nicotinic acid, VA, VD, VE, sodium selenite (or yeast selenium), copper sulfate, zinc sulfate, cobalt sulfate, calcium iodate, manganese sulfate, etc.

The invention provides a feed additive capable of preventing spitting and relieving heat stress for snakehead. The feed additive is prepared from the following raw materials: radix scutellariae, bamboo shavings, reed rhizome, radix aucklandiae, oligosaccharides, dimethyl-beta-dimethylpropiothetin, nucleotide, vitamin C, and middling powder. The feed additive disclosed by the invention can be added to the snakehead basal fed to quicken emptying of chyme in the gastrointestinal tract, prevent spitting for snakehead, promote ingestion of snakehead, meanwhile strengthen intestinal health, improve digestive enzyme activity, and increase the feed efficiency and the production effectiveness.

The invention belongs to the field of feed development, and particularly relates to chicken feed and a preparation method thereof, as well as the application of a residual cordyceps militaris culture medium. The chicken feed comprises the following components in parts by weight: 25-45 parts of the residual cordyceps militaris culture medium, 10-20 parts of alternanthera philoxeroides and 10-15 parts of mulberry leaf. According to a formula of the chicken feed, feed protein resources are increased, the feed cost is reduced, the quality of eggs is improved and the breakage rate of egg shells is reduced; moreover, the heat stress response of a chicken is reduced and the number of laid eggs is increased.

The invention provides a compound preparation for preventing and treating heat stress syndrome of beef cattle. The compound preparation comprises the following medicated raw materials in parts by weight: 200 to 300 parts of agastache, 200 to 300 parts of rhizoma atractylodis, 100 to 200 parts of hoantchy root, 100 to 200 parts of baical skullcap root, 100 to 150 parts of costustoot and 100 to 150 parts of dried orange peel; all the medicated raw materials are smashed and then mixed well. The invention further provides a preparation method and a use method of the compound preparation for preventing and treating heat stress syndrome of beef cattle. The compound preparation is based on the theory of 'Chinese veterinary medicines', is mainly formed by compounding Chinese herbal medicines, is used for replacing frequently-used antibiotics, sedative and other medicated premix to prevent and treat heat stress response of beef cattle, and has the advantages of safety, no residue, no toxicity or harm to animals, and the like. The compound preparation is particularly applicable to high-temperature and high-humidity environments in the south in summer and can be used for preventing and treating heat stress response of growing beef cattle and fattening beef cattle in summer.

The invention discloses a method for increasing the yield of pichia pastoris foreign protein, and belongs to the technical field of biological engineering. Through overexpression of the heat stress response related genes HSP78 and SSA3, activation of a heat stress response mechanism is promoted to help correct folding of intracellular proteins, so that the yield of pichia pastoris foreign proteins is increased. After the HSP78 and the SSA3 are over-expressed, the expression quantities of the green fluorescent protein, the lipase and the phospholipase of the strain are increased to different degrees, the expression quantity of the green fluorescent protein is increased by 50% at most, the expression quantity of the lipase is increased by 57% at most, and the expression quantity of the phospholipase is increased by 81% at most; therefore, the heat shock proteins HSP78 and SSA3 have better application value in expression of foreign proteins in pichia pastoris and improvement of the yield of the foreign proteins.