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Study on the Chelation Technology of Zinc Glutamine by Solid State Reactions under Microwave and Its Feeding Value on Broilers

Author: LuZuo
Tutor: WangChunWei
School: Wuhan Polytechnic University
Course: Animal Nutrition and Feed Science
Keywords: Microwave radiation Solid-phase synthesis Glutamic acid zinc Broilers Growth performance
CLC: S831.5
Type: Master's thesis
Year: 2009
Downloads: 73
Quote: 1
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Abstract


Amino acid chelates of trace elements in recent years, the rapid development of a new type of nutritional additives, chemical and biochemical stability and high biological potency, can effectively improve the effects of animal husbandry and feed efficiency. Amino acid chelates of trace elements of the production method is liquid system synthesis method, the method long process cycle, multi-product and waste water, and high cost. The use of microwave technology, rapid synthesis of amino acid chelates of trace elements, the process is simple, non-polluting, low cost. The test is divided into three parts: test a microwave solid the synthetic glutamate zinc study the experiment, sodium glutamate, and zinc oxide as raw materials under the conditions of the microwave radiation, the solid-phase synthesis of glutamic acid, zinc chelating rate assessment of the indicators, the use of single-factor test and orthogonal test to optimize the synthesis conditions, to determine the optimum reaction parameters. Single factor test results show that the optimum parameters for ligand molar ratio of 1.2:1, microwave power 500W, microwave radiation time 150s, triggering water dose for 13ml. Orthogonal experiment results show that the optimum parameters for ligand molar ratio of 1.2:1, microwave power 500W, microwave radiation time 150s, cause water dose for 12ml, chelation rate could reach 83.02% under these conditions. Quality analysis test two glutamic acid zinc analysis confirmed the test by infrared spectroscopy, elemental content determination and qualitative analysis of the product structure. Also a comparative analysis of their water absorption and solubility under physiological conditions to provide a theoretical basis for its application. The test results show that the obtained inner complex salt of glutamic acid zinc, wherein the glutamic acid content of 63.28%, the Zn content to 26.43%, in the aqueous solution, glutamic acid, zinc is very stable; under physiological conditions, the product solubility Priority ZnO and ZnSO4 · H2O. Test three glutamic acid zinc research of this study was to investigate the effect of broilers fed glutamate zinc supplementation on growth performance, serum zinc enzyme activity, immune organ index and the tissues and organs of the zinc content. 240 healthy 7-day-old Avian broilers were randomly divided into six groups, each group of five replications, each repeated eight. The trial period of five weeks. Corn - soybean meal diet control group added ZnSO4 · H2O, zinc levels to 80mg/kg test group added the Microwave Synthesis glutamate Sim, zinc levels were: 20mg/kg, 40mg/kg, 60mg/kg, 80mg/kg, 100mg/kg. The results show that the test week period, with the increase in the level of dietary zinc glutamate, broilers daily gain and feed efficiency were improved, 40 mg / kg added level of glutamate zinc group and the control group significantly improve the trial period average daily gain (P lt; 0.05); serum alkaline phosphatase activity first increased with increasing dietary zinc levels, and then decline in zinc levels to 60 mg / kg to obtain the maximum value; glutamate the Zinc group in the thymus index, spleen index, significantly better than the control group, and the difference was significant (P lt; 0.05) bursal index is not sensitive; pancreas and liver zinc content with the increase of the added amount of the dietary zinc in zinc levels of 60 mg / KG 's on the obtained maximum value, and pancreatic zinc deposits of organic zinc group were significantly higher than that of the inorganic zinc group (P LT; 0.05). Thymus zinc deposition of organic zinc group was significantly lower than that of the inorganic zinc group (P lt; 0.05). Comprehensive analysis of indicators and economic benefits from this test, it is recommended to add 40 ~ 60 mg / kg zinc levels of glutamate zinc in broiler feed.

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CLC: > Agricultural Sciences > Livestock, animal medicine,hunting,silkworm,bee > Poultry > Chicken > Feed and nutrition
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