8 results about "Nutritional excess" patented technology

The invention discloses a computer-based pig feed formula data optimization processing method and a computer-based pig feed formula data optimization processing system, and relates to the technical field of breeding management. According to the method, by constructing a growth curve expansion algorithm model and combining individual data of pork pigs and microbial metabolic activity data, the weight gain of the pork pigs can be predicted; and further calculating the nutritional requirement Dn of each growth stage. Compared with a traditional method for formulating a feed formula depending on experience or a static model, the method has the advantages that the daily nutritional requirements are calculated in real time through the growth curve extension algorithm model, so that the feed formula is adjusted more accurately. And when the nutritional demand Dn exceeds a preset nutritional demand threshold value, the system can automatically trigger a feed formula optimization mechanism and output the adjusted feed demand Fi, so that the growth demand of the pork pigs is met. Through the dynamic adjustment, the pork pigs can obtain the nutrition proportion most suitable for the current growth stage, and the problem that health and growth speed are affected due to overnutrition or insufficient nutrition is avoided.

The invention belongs to the technical field of construction of experimental animal models, and particularly relates to a construction method and application of a recombinant inbred line type 2 diabetes mellitus rat model, in parent rats, female rats are SD (fa + / +) or Wistart (fa + / +), male rats are Zucker (fa + / -), heterozygote (fa + / -) female rats in filial generations obtained through hybridization are backcrossed with male parents until an F6 generation, and the female rats and the male rats are subjected to cross breeding to obtain the recombinant inbred line type 2 diabetes mellitus rat model. And hybridizing the F6 generation heterozygote (fa < + / ->) female rat with the F6 generation heterozygote (fa < + / ->) male rat to obtain a homozygote (fa <- / ->) SD / Zucker or Wistart / Zucker rat which is the recombinant inbred line type 2 diabetes mellitus rat. The obtained rats cannot express functional leptin receptors, have hyperappetite and autonomous polydipsia and polyphagia, and are very in line with real occurrence scenes of type 2 diabetes mellitus caused by overnutrition of diet under normal diet conditions of human beings.

The utility model discloses a fermentation feed supplement system for fusidic acid production, which relates to the technical field of fermentation feed supplement and comprises a feed supplement tank, a fermentation tank and a feed supplement cup, the feed supplement tank is connected with the feed supplement cup, the feed supplement cup is connected with the fermentation tank, and a peristaltic pump is arranged on a connecting pipeline of the feed supplement cup and the fermentation tank. Through cooperative operation of the material supplementing tank, the material supplementing cup, the flow sensor, the peristaltic pump and the like, accurate material supplementing can be realized according to dynamic requirements of microorganisms for nutrition in different fermentation stages of fusidic acid. The problem of overnutrition or insufficiency in a traditional material supplementing mode is effectively avoided, generation of by-products is reduced, microorganisms can obtain appropriate nutrients in all growth stages, a stable material basis is provided for efficient synthesis of fusidic acid, and then the yield and quality of products are improved.

The invention relates to the field of fermentation equipment, in particular to an automatic fermentation liquor supplementing device for glutathione production, which comprises: a reaction tank, the top of the reaction tank is provided with an air inlet, the top surface of the reaction tank is fixedly provided with a main air bellow and an auxiliary air bellow, and the main air bellow is correspondingly arranged right above the air inlet and is communicated with the inside of the reaction tank; and a sealing plate. According to the invention, the main air bellow directly senses the volume and pressure change of the purified gas caused by microbial metabolism in the gas phase space at the top of the fermentation tank, and the change is converted into the opening and closing action of the material supplementing valve through the lever mechanism. The feeding process is directly linked with the actual metabolic activity of microorganisms in real time, 'on-demand feeding 'is achieved, and hysteresis and blindness existing in traditional timed and quantitative feeding or program-controlled feeding are effectively avoided. Therefore, nutrition supply can be ensured to be always dynamically matched with microbial requirements, and overnutrition or insufficient nutrition is prevented, so that the yield of glutathione and the stability of the fermentation process are remarkably improved.

The invention provides an urban vegetable garden growth period nutrition dynamic monitoring and precise regulation and control system and method based on spectral analysis and machine learning, and relates to the technical field of crop nutrition diagnosis. A spectrum-nutrient content mapping relation is established, and the crop nutrient state is dynamically monitored. A nutrition diagnosis model based on transfer learning dynamically adjusts diagnosis thresholds in different growth stages through a weight adaptive updating mechanism, and the accuracy and adaptability of diagnosis are remarkably improved. Meanwhile, the optimal fertilization proportion is calculated by adopting a fuzzy control algorithm, accurate nutrition supply is realized through the intelligent fertilization system, the problem of overnutrition or insufficient nutrition is effectively avoided, the fertilization efficiency is improved, and resource waste and environmental pollution are reduced. According to the invention, the growth quality and yield of urban vegetable garden crops are significantly improved, and the intelligent and precise development of urban agriculture is promoted.

This invention belongs to the field of experimental animal model construction technology, specifically relating to the construction method and application of a recombinant inbred type 2 diabetic rat model. The parent rats are SD (fa+ / +) or Wistar (fa+ / +) females and Zucker (fa+ / -) males. Heterozygous (fa+ / -) female offspring are backcrossed with the fathers until the F6 generation. Then, F6 heterozygous (fa+ / -) female rats are crossed with F6 heterozygous (fa+ / -) male rats. The resulting homozygous (fa- / -) SD / Zucker or Wistar / Zucker rats are the recombinant inbred type 2 diabetic rats. The rats obtained by this invention do not express functional leptin receptors, exhibit hyperphagia, and spontaneous polydipsia and polyphagia, which closely resembles the real-world scenario of type 2 diabetes caused by overnutrition under normal dietary conditions in humans.

The present invention provides a low-protein diet and its application for improving the egg-laying performance of white-feathered broiler breeder chickens and the production performance of their offspring. By optimizing the low-protein diet formula and rationally considering electrolyte supplementation, the present invention successfully addresses the problem of nutritional excess in white-feathered broiler breeder chickens, ensuring sufficient absorption and utilization of supplemented crystalline amino acids, thereby improving protein synthesis capacity and achieving the feeding standard of a normal protein diet. This contributes to independent innovation in the application technology of domestically produced new-type white-feathered, fast-growing, large-scale broiler breeder chickens and promotes the development and progress of my country's breeding industry.

The utility model belongs to feed mixing device technical field, concretely is a kind of feed mixing device for sheep breeding, including mixing box, second rotating shaft is rotatably installed in the mixing box by bearing, the surface of second rotating shaft is fixedly installed with multiple fixed discs, the surface of multiple fixed discs is fixedly installed with blade for being used to the comminution of feed, one end of second rotating shaft is sleeved with second sleeve, and second sleeve is penetrated through the lateral wall of mixing box by bearing, comminution and stirring plate stirring are synchronously carried out by blade, blade first breaks up large particle raw material, increases material contact area, and stirring plate is stirred from different directions to feed again, realizes comminution and mixing, effectively avoids the problem of uneven mixing caused by the size difference of raw material particles, and the uniformly mixed feed enables sheep to intake balanced nutrient components when feeding, to avoid the situation of excessive nutrition or malnutrition.