include tags nutrition

Plant mineral nutrition

Knowledge Title: Plant mineral nutrition Other Title: plant mineral nutrition Knowledge Content:  The process of absorbing and utilizing mineral nutrients by plants. Mineral elements are widely involved in all aspects of plant metabolism, many of which are the structural substances of plants or the components of some important compounds in the plant. When these mineral elements are lacking or proportionately, plants exhibit corresponding symptoms due to metabolic disturbance and destruction. The study of plant mineral nutrition can provide a theoretical basis for the rational fertilization of cultivated crops.  Essential mineral elements There are many essential mineral elements of plants, according to the amount of need can be divided into a large number of elements (nitrogen, phosphorus, potassium, calcium, magnesium, sulfur) and trace elements (iron, boron, manganese, zinc, copper, palladium, chlorine, etc.). In addition, there are a number of non-steres, such as silicon, which can increase the hardness of rice stems and leaves, make the leaves more upright, increase the utilization of light energy, and increase tissue resistance to pests and diseases; Can be called a useful element.……

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Oscar Kerner Institute for Animal Nutrition

Knowledge Title: Oscar Kerner Institute for Animal Nutrition Other Title: Oskar-Kaller Institute of Animal Education Knowledge Content:  A livestock nutrition research institute in gdr., named after the animal nutritionist O. Kerner. Founded in 1852 by E. Wolff, the original Macon. O. Kerner is the third director. After moving to Rostock in 1953, it changed its name to its current name. There is a breathing room for pigs, cattle and sheep. The main direction of attack is to apply indirect heat measurement, study the energy metabolism of livestock and feed energy evaluation. In 1900, the researchers summarized the nitrogen and carbon balance of 27 feed species at the level of two levels of differential feeding, obtained the sedimentation of body protein and body fat, and then calculated the starch and other values of nearly 300 feed, and developed a calculation method of energy demand for livestock that was widely used throughout Europe.……

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Plant Nutrition Diagnostics

Knowledge Title: Plant Nutrition Diagnostics Other Title: diagnosis of plant nutrition Knowledge Content:  According to the change of the plant morphology characteristics or the nutrient content of the organ, the method of judging the deficiency of nutrients in the plant is judged.  The content of each nutrient within the plant tissue is usually lacking (in the range of A, B, C in the figure), the appropriate amount (in the D range in the figure) and excess (in the E range in the figure). When a nutrient element in a plant tissue is in a state of infancy, i.e. the content is below the nutrient threshold (the amount of nutrients must be maintained in the body when the plant grows normally), the plant yield increases rapidly with the increase of the nutrient element; Plant yield can be maintained at the highest level, but the portion of nutrients that exceed the critical value does not have effect on the yield, the absorption of this nutrient is a luxury absorption, and when the nutrient content of the crop greatly exceeds the nutrient threshold, the plant yield does not increase, but decreases, that is, excessive poisoning of nutrients.……

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Nutritional and metabolic diseases in livestock

Knowledge Title: Nutritional and metabolic diseases in livestock Other Title: nutritional and metabolic disturbance of domestic animal Knowledge Content:  A class of systemic group morbidity caused by nutritional deficiency and metabolic disorders in livestock. These include metabolites of sugar, fat and protein, mineral and water, salt metabolism disorders, vitamin deficiency and trace element deficiency (livestock). Many recessive or subclinical cases often lead to slow growth and decreased yield in livestock.  Nutritional deficiencies and metabolic disorders are not part of any physiological anatomy system, but are often dominated by certain systems in terms of pathological changes or symptoms. Such as calcium, phosphorus metabolic disorders and vitamin D deficiency mainly in the skeletal system; vitamin A deficiency is mainly in the retina and bones; vitamin E and selenium deficiency is mainly in the muscles; iodine deficiency is mainly in the thyroid gland; zinc deficiency is mainly in the skin and so on.……

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