本文選題：木聚糖酶 + 植酸酶��； 參考：《延邊大學(xué)》2015年碩士論文

【摘要】：當前,在蛋雞養(yǎng)殖行業(yè)中,飼喂的飼料原料主要以植物性的玉米、豆粕、大麥、小麥、黑麥和雜粕為主,而在麥類和粕類中富含大量植酸和木聚糖,植酸和木聚糖具有較強的抗營養(yǎng)作用,由于它們的存在,使得飼糧中的營養(yǎng)成分難以被禽機體有效吸收和利用,降低了飼糧的的利用率和轉(zhuǎn)化率。植酸酶與木聚糖酶能夠有效降解植物性飼糧中含有的植酸和木聚糖,使其中抗營養(yǎng)的成分被分解利用,促進植物性飼糧中的營養(yǎng)成分能夠被禽機體吸收和利用,這樣能夠提高其利用率及轉(zhuǎn)化率。本試驗通過在小麥一豆粕型日糧中研究添加植酸酶和木聚糖酶在蛋雛雞生長上的相關(guān)作用,為當前在雛禽料中合理使用酶制劑提供本試驗選用1d海蘭褐商品蛋雛雞作為試驗動物,共1200羽,隨機分為3組,每組有4個重復(fù),每個重復(fù)有100只,試驗期為28d。對照組飼喂基礎(chǔ)日糧,試驗1組在基礎(chǔ)日糧基礎(chǔ)上添加木聚糖酶5000(U/g)和植酸酶4000(U/g)組成的復(fù)合酶,試驗2組在基礎(chǔ)日糧基礎(chǔ)上添加木聚糖酶5000(U/g)。本文旨在探討植酸酶和木聚糖酶組成的復(fù)合酶和單一的木聚糖酶分別對蛋雛雞的生長性能、養(yǎng)分代謝率和血液生化指標的影響。試驗結(jié)果如下：1.證明了木聚糖酶和植酸酶這兩種酶能夠顯著的提高蛋雛雞的平均日增重,還能夠能夠降低日采食量以及料重比,因為試驗驗證了在小麥-豆粕型飼糧中添加樂1號復(fù)合酶后的效果要好于試驗2組也就是2號的木聚糖酶。2.可以看出木聚糖酶和植酸酶這兩種酶能夠顯著地增加蛋雛雞的脛骨長度,因為試驗驗證了在小麥-豆粕型的飼糧立面添加試驗1組也就是1號復(fù)合酶的效果要好于我們實驗的2號木聚糖酶。3.試驗也可以看出木聚糖酶和植酸酶能夠顯著地提高蛋雛雞粗蛋白、水分、鈣和磷的表觀代謝率,因為在試驗中在小麥-豆粕型飼糧里面添加1號復(fù)合酶效果要好于2號木聚糖酶。4.試驗同時也可以證明木聚糖酶和植酸酶能夠顯著提高蛋雛雞血清中總蛋白、白蛋白、葡萄糖、IgA、IgM的含量,顯著降低血清中尿素氮的含量。在試驗中,在小麥-豆粕型飼糧中添加了試驗1組的1號復(fù)合酶效果要好于2號木聚糖酶。
[Abstract]:At present, in the industry of laying hens, the feed materials are mainly plant corn, soybean meal, barley, wheat, rye and mixed meal, but they are rich in phytic acid and xylan in wheat and meal. Phytic acid and xylan have strong anti-nutritional effect, because of their existence, the nutrient components in diet are difficult to be effectively absorbed and utilized by poultry body, and the utilization ratio and conversion rate of diet are reduced. Phytase and xylanase can effectively degrade phytic acid and xylan contained in plant diet, which can decompose and utilize the anti-nutritive components of phytase and xylanase, and promote the absorption and utilization of phytase and xylanase in plant diet. In this way, the utilization rate and conversion rate can be improved. The effects of phytase and xylanase on the growth of egg chicks were studied by adding phytase and xylanase in wheat-soybean meal diet. In this experiment, 1200 Hailan brown egg chicks were randomly divided into 3 groups, with 4 replicates in each group, 100 in each group, and the experiment period was 28 days. The control group was fed with basal diet. Group 1 added xylanase 5000 (U / g) and phytase 4000 (U / g) on the basis of the basal diet. Group 2 added xylanase 5000 (U / g) on the basis of the basal diet. The purpose of this study was to investigate the effects of phytase and xylanase compound enzyme and single xylanase on growth performance, nutrient metabolism rate and blood biochemical index of egg chicks. The test results are as follows: 1. The results showed that xylanase and phytase could significantly increase the average daily gain of egg chicks and decrease the daily feed intake and feed weight ratio. The results showed that the effect of adding Le 1 compound enzyme in wheat-soybean meal diet was better than that in group 2, I. E. xylanase. 2. It can be seen that xylanase and phytase can significantly increase the tibia length of egg chicks. Because the experiment proved that the effect of adding No. 1 compound enzyme on wheat-soybean meal diet facade was better than that of No. 2 xylanase. 3 in our experiment. The results also showed that xylanase and phytase could significantly increase the apparent metabolic rate of protein, water, calcium and phosphorus in egg chicks. Because in the experiment, the effect of adding No. 1 compound enzyme in wheat-soybean meal diet is better than that in No. 2 xylanase. 4. The results also showed that xylanase and phytase could significantly increase the contents of total protein, albumin and Glucose-IgA- IgM in the serum of egg chicks, and significantly reduce the content of urea nitrogen in serum. In the experiment, the effect of the No. 1 compound enzyme added in the wheat-soybean meal diet was better than that in the No. 2 xylanase.
【學(xué)位授予單位】：延邊大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：S831.5

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