【摘要】：本研究主要是對(duì)甘蔗葉和全株雜交蛋白桑樹(shù)進(jìn)行不同預(yù)處理,篩選出甘蔗葉和全株蛋白桑樹(shù)最佳處理方法,配制生長(zhǎng)肉牛全混合型日糧,并進(jìn)行飼養(yǎng)試驗(yàn)和經(jīng)濟(jì)效益評(píng)估,同時(shí)測(cè)定各組日糧表觀消化率和血液生化指標(biāo)。試驗(yàn)第一部分,主要對(duì)甘蔗葉、全株蛋白桑樹(shù)進(jìn)行不同預(yù)處理方法研究,甘蔗葉預(yù)處理研究：對(duì)照組、氨化組、氨-堿化組、微貯組;全株蛋白桑預(yù)處理研究：對(duì)照組、微貯組、復(fù)合物處理組。探討不同預(yù)處理方法對(duì)甘蔗葉、全株蛋白桑樹(shù)感官評(píng)定及處理后對(duì)營(yíng)養(yǎng)成分影響。結(jié)果顯示：(1)經(jīng)不同處理的甘蔗葉DM、CP、EE含量相對(duì)于對(duì)照組均略有提高,其中各組DM含量差異不顯著(P0.05),而CP、EE顯著提高(P0.05),顯著降低了甘蔗葉CF、NDF、ADF的含量(P0.05),提高了甘蔗葉了感官品質(zhì)和營(yíng)養(yǎng)價(jià)值,綜合考慮甘蔗葉預(yù)處理方法以氨-堿組最佳。(2)經(jīng)過(guò)微貯處理、復(fù)合物處理后的全株蛋白桑樹(shù)CP、EE含量均高于對(duì)照組,其中CP含量最高為復(fù)合處理組26.96%顯著高于對(duì)照組20.05%(P0.05),EE含量各組間差異不顯著(P0.05);CF含量相比對(duì)照組均顯著降低(P0.05)。微貯處理、復(fù)合物處理提高了全株蛋白桑樹(shù)的品質(zhì),適口性,提高了營(yíng)養(yǎng)物質(zhì)。試驗(yàn)第二部分,利用不同量甘蔗葉、全株蛋白桑樹(shù)配制不同全混合型日糧飼養(yǎng)生長(zhǎng)肉牛,試驗(yàn)結(jié)果：(1)對(duì)照組、試驗(yàn)一、試驗(yàn)二各組試驗(yàn)牛平均每頭牛日采食量分別為17.23kg、17.4、16.23kg,差異不顯著(P0.05)；日增重最高為試驗(yàn)一0.50 kg/d,比對(duì)照組高4.2%,差異不顯著(P0.05)；按每kg體增重飼料費(fèi)分析,試驗(yàn)一組平均每kg增重飼料費(fèi)比對(duì)照組降低1.24元,經(jīng)濟(jì)效益提高。(2)各營(yíng)養(yǎng)物質(zhì)表觀消化率分析,對(duì)照組、試驗(yàn)一、試驗(yàn)二DM消化率分別為54.21%、55.71%、53.19%,試驗(yàn)一組DM消化率高于對(duì)照組,各組間差異不顯著(P0.05);試驗(yàn)一、試驗(yàn)二CP、CF消化率均高于對(duì)照組,但組間差異不顯著(P0.05)。日糧中添加適宜用量的全株蛋白桑樹(shù)有助于提高生長(zhǎng)肉牛消化能力。(3)試驗(yàn)一、試驗(yàn)二各組實(shí)驗(yàn)牛血液生化指標(biāo)葡萄糖(GLU)、膽固醇(CHOL)和甘油三脂(TG)測(cè)定值均比對(duì)照組低,但組間差異不顯著(P＞0.05),表明桑葉具有一定的降血糖、血脂功能,為下一步探討桑葉中生物堿具有降低血糖、血脂等作用機(jī)制提供參考依據(jù)。
[Abstract]:The main purpose of this study was to pretreat sugarcane leaves and whole hybrid protein mulberry trees, to select the best treatment methods of sugarcane leaves and whole plant protein mulberry trees, to prepare the whole mixed diet for growing beef cattle, and to carry out feeding experiments and economic benefit evaluation. At the same time, the apparent digestibility and blood biochemical index of each group were measured. In the first part of the experiment, the different pretreatment methods of sugarcane leaves and whole plant protein mulberry were studied. The pretreatment of sugarcane leaves was as follows: control group, ammoniation group, ammonia-alkali group, microstorage group; Study on pretreatment of whole protein mulberry: control group, microstorage group, complex treatment group. The effects of different pretreatment methods on the sensory evaluation of sugarcane leaves and whole plant protein mulberry were studied. The results showed that: (1) the content of DM,CP,EE in sugarcane leaves treated with different treatments was slightly higher than that in the control group, and the content of DM in each group was not significantly different (P0.05), but the content of CP,EE was significantly increased (P0.05). The content of CF,NDF,ADF in sugarcane leaf was significantly decreased (P0.05), and the sensory quality and nutritional value of sugarcane leaf were improved. The CP,EE content of mulberry after complex treatment was higher than that of control group, and the highest CP content in compound treatment group was 26.96% higher than that in control group 20.05% (P0.05), EE content was not significant difference between groups (P0.05); The content of CF was significantly lower than that of control group (P0.05). Microstorage and complex treatment improved the quality, palatability and nutrition of whole protein mulberry. In the second part of the experiment, we used different sugarcane leaves and whole plant protein mulberry to prepare different mixed diets to feed growing beef cattle. The results were as follows: (1) Control group, experiment 1, In experiment 2, the average daily feed intake of each cattle was 17.23 kg / cattle (17.23 kg / kg), and the difference was not significant (P0.05). The maximum daily gain of test-0. 50 kg/d, was 4. 2% higher than that of control group (P0.05). According to the analysis of feed cost per kg, the average feed cost per kg in the test group was 1.24 yuan lower than that in the control group, and the economic benefit was improved. (2) the apparent digestibility of each nutrient was analyzed. The digestibility of DM in experiment 2 was 54.21 and 55.71 respectively. The digestibility of DM in group one was higher than that in control group (P0.05). The digestibility of CP,CF in trial 1 and 2 was higher than that in control group, but there was no significant difference between the two groups (P0.05). (3) experiment 1, experiment 2, experiment 2: glucose (GLU), a biochemical index of blood of cattle, was added to the diet with proper dosage of whole plant protein mulberry. (3) experiment 1, experiment 2. The levels of cholesterol (CHOL) and triglyceride (TG) were lower than those of the control group, but there was no significant difference between the two groups (P > 0. 05), which indicated that mulberry leaves had the function of lowering blood glucose and blood lipids. The mechanism of blood lipid and so on provides the reference basis.
【學(xué)位授予單位】：廣西大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：S823.5

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