Through four years of the door to survive, I grew a lot. At the time of my graduation, I made a summary of my four years of experience and feelings, and as a guide to my future initiatives. Mind, I seek to move forward, the mind has made great progress in consciousness. I love the country, love the people, decisively attached to the leadership of the Communist Party and the socialist system. I think the price of a person by his society for others to do the honor to measure, I participate in the cause of the Chinese Communist Party is to actively achieve their own costs. I earnestly studied all kinds of theories of the Party and actively paid them to practice to have a clearer understanding of the Party.
Learning, I think the door to the important task of students or learn cultural knowledge, so I learn in the sense, not to relax. I think that a good learning method to learn very good knowledge, so in each test, I sum up a city learning experience. But to deal with our computer-related professional disciples, the optical optical good books on the knowledge is far from enough. I often use the spare time to read the computer class books, and participated in a number of computer degree of qualification tests, successfully obtained xxx certificate, xxx certificate, xxx certificate. I kept looking for the sublimation of character, pay attention to their own conduct, to independent thinking as their motto, when not forgetting. With the progress of learning, I not only learned the mass foundation of knowledge and a lot of professional knowledge, my mind has a qualitative Pentium, a faster grasp of a new skill knowledge, I think this is very tense for the future.Such as the Department of Health students will campaign, the yard structure of the speech contest, arts and cultural festival of the arts show, English speech contest. In the process of participating in these activities, I make friends with some good friends, learned the manners of doing things, to cultivate their own skills.
Social practice has made great progress. Four years in college, I participated in a lot of school activities and did some social practice.Do tutors, volunteers, dumping and planners, and occasionally feel tired, but increased with other students to exchange and to learn from their opportunities, to develop their own communication skills, learn the strengths of others, Clear the drawbacks of their own, let the door to survive more colorful.
A good paper is not written out, but modified out, which requires patience, but also hard. In the process of writing the paper, I encountered many problems, some of which are beyond the scope of their ability, whenever they can not write their own ideas or thoughts do not go, I will appear impetuous mood, but I Did not give up, but in a timely manner to adjust their mentality, with the help of students in the teacher, completed the first paper writing. The more you do not understand the things you want to learn, in the learning process you will gain a lot, one point is to learn from each other is the best way to learn, after learning you will feel a sense of accomplishment, which I completed After the production site to experience.
Throughout the graduation thesis design process, I learned to do anything to have attitude and attitude, first of all I understand that to be meticulous in learning, for any problems and deviations do not despise, through the correct path to solve, in the Do things in the process to have patience and perseverance, not a difficult encounter back down, as long as you stick to it can find ideas to solve the problem. In the work to learn to cooperate with the attitude, listen carefully to the views of others, so start things can be less effective.
The successful completion of the paper, first of all I would like to thank my teacher and teacher Tang Jianhua around the help of friends, thank them for their valuable comments and suggestions. In addition, I would like to thank all the teachers in the university to teach my knowledge is your careful teaching so that I have a good knowledge of professional courses, which is the basis for the paper to be completed.
1. Evaluation of the quality of the paper, in the discipline or national economic construction on the value or theoretical significance
In recent years, the rapid development of animal husbandry in China, the total output value of animal husbandry has reached 35% of total agricultural output value, animal husbandry in China's agricultural production structure, the proportion is growing. Vitamin D is an essential nutrient for livestock and poultry, and plays an important role in promoting animal calcium, phosphorus absorption, egg shell formation and bone development. At present for the aquaculture industry, livestock and poultry vitamin D supplementation, mainly through the dietary or drinking water to add micron-grade vitamin D3, vitamin D3 is a fat-soluble vitamins, direct absorption absorption rate is relatively low, biology Titer is not high, with the development of nanotechnology in recent years, nanomaterials gradually being recognized and accepted. Some studies have shown that the use of nanotechnology can change the water-soluble vitamin-soluble vitamins, improve the bioavailability of vitamins. At the same time, through the fat-soluble vitamin D3 nano-can also improve the compatibility between the vitamin and feed processing. So far, the study of vitamin nano-focus mainly in the compound nano-vitamins, complex nano-vitamins as a complex, additive effect is difficult to explain clearly. To date, no studies have been conducted on the production of single fat-soluble vitamins in poultry production. This experiment was designed for the above reasons. The aim of this study is to evaluate the biological potency of nanovitamin D3 with the reference of ordinary vitamin D3, and to provide theoretical basis for its industrial production and practical application of animal husbandry.
2. Point out the innovation of the paper or innovation
(1) The application of solid nano-VD3 in laying hens was studied for the first time.
(2) In this study, based on the study of the effects of laying hens on performance, egg quality and tibia development, the dietary supplementation of nano-VD3 was determined to further optimize the calcium and phosphorus metabolism, to obtain the best health level and maximum potential performance. , The expected results for the scientific feeding layer, effectively guarantee the healthy growth of laying hens provides a new idea, with high application value.
(3) By comparing the advantages of nano-VD3 compared with conventional vitamin VD3 in breeding.
(4) the preparation of vitamin nanoparticles for the use of laying hens to study whether to improve the utilization of VD3
3. My research ability
During the graduate, actively participate in academic exchange activities, strictly follow the scientific rigorous study and research attitude, seek truth from facts, earnestly study, and continuously improve the scientific research ability. According to the guidance of instructors, read a lot of literature, and gradually clear the research direction, to determine their own research topics. In the experimental research stage, in strict accordance with the experimental program for research, can be used flexibly to solve the problems encountered in the trial, and constantly improve their ability to solve problems. Through their own continuous efforts, as well as with teachers and students to explore the exchange, so that their access to literature, comprehensive analysis of the basic quality of continuous improvement, the ability to express written temper has also been temper, especially independent thinking and research ability, Great progress, published during the student-related academic papers and independent completion of the thesis.
4. The main shortcomings of the paper
(1) In this study, the effect of adding vitamin D3 and vitamin D3 on the related indexes of laying hens was studied. It is necessary to further study whether the test animals have the same additive effect on other animals.
(2) The levels of vitamin D3 and vitamin D3 were 100 300 900 2700IU / kg, respectively. The proportion of vitamin D3 in the layers was 900-2700 IU / kg according to the method of equal ratio. In the actual production, The level of some large, should be further designed gradient test of different concentrations to explore the vitamin D3 in the diet the most appropriate level of added.