本文選題：復(fù)合益生菌劑 + 維吉尼亞霉素��； 參考：《甘肅農(nóng)業(yè)大學(xué)》2017年碩士論文

【摘要】：本試驗通過在飼糧中添加0.1%乳酸菌和酵母菌復(fù)合菌劑、維吉尼亞霉素,研究其對艾拔益加肉仔雞(AA)生產(chǎn)性能、屠宰性能、肉品質(zhì)、腸道健康、血清生化指標、抗氧化能力和機體免疫能力的影響,為在肉仔雞生產(chǎn)中使用該復(fù)合菌劑提供科學(xué)依據(jù)。選取400只1日齡健康A(chǔ)A肉仔雞公雛,根據(jù)體重相近的原則分為4個處理,每處理5個重復(fù)。對照組飼喂基礎(chǔ)飼糧,3個試驗組分別飼喂在基礎(chǔ)飼糧基礎(chǔ)上添加30 mg/kg維吉尼亞霉素(VM30)、15 mg/kg維吉尼亞霉素+0.1%乳酸菌和酵母菌復(fù)合菌劑(VM15+LY1)、0.1%乳酸菌和酵母菌復(fù)合菌劑(LY1)的試驗飼糧。試驗分為前期(1~21 d)和后期(22~42 d),共42 d。結(jié)果表明:1)與對照組相比,VM30、VM15+LY1和LY1組肉仔雞42 d體重均顯著提高(P0.05),且VM15+LY1組顯著高于LY1和VM30組(P0.05)。后期,與對照和VM30組相比,VM15+LY1和LY1組的平均日增重(ADG)顯著提高(P0.05);VM15+LY1和LY1組的料重比(F/G)顯著低于對照組(P0.05)。全期,與對照組相比,試驗組ADG顯著提高(P0.05),且VM15+LY1組顯著高于VM30和LY1組;VM15+LY1和LY1組F/G顯著降低(P0.05)。2)試驗組42 d胸肌率顯著高于對照組(P0.05),且VM15+LY1組的42 d全凈膛率顯著高于對照組(P0.05)。3)與對照組相比,3個試驗組的45 min內(nèi)胸肌的紅度顯著升高(P0.05),LY1組的24 h紅度值顯著升高(P0.05)。4)與對照組相比,21 d,LY1組的空腸絨毛高度、十二指腸和空腸的絨毛高度/隱窩深度顯著提高(P0.05),空腸隱窩深度顯著降低(P0.05);VM15+LY1組的回腸絨毛高度/隱窩深度顯著升高(P0.05)。42 d,VM15+LY1和LY1組十二指腸和空腸絨毛高度及絨毛高度/隱窩深度顯著提高(P0.05)。5)42 d,與對照組相比,VM15+LY1組和LY1組的盲腸大腸桿菌數(shù)量和大腸桿菌/乳酸菌顯著降低(P0.05)。6)42 d,與對照組相比,VM15+LY1組和LY1組的血清總蛋白含量顯著升高(P0.05)。7)21 d,與對照組相比,3個試驗組肉仔雞血清中丙二醛顯著降低;VM15+LY1組和LY1組肉仔雞血清中谷胱甘肽過氧化物含量顯著升高(P0.05)。42 d,與對照組相比,VM15+LY1組和LY1組肉仔雞血清中總超氧化物歧化酶和谷胱甘肽過氧化物酶活性顯著升高(P0.05),丙二醛含量顯著降低(P0.05),VM15+LY1組總抗氧化能力顯著高于其他組(P0.05)。8)42 d,與對照組相比,VM15+LY1組和LY1組肉仔雞的脾臟指數(shù)有升高趨勢(P0.05)。9)21 d,與對照組相比,VM15+LY1組和LY1組肉仔雞血清IgG含量顯著升高(P0.05),LY1組IgA含量顯著升高(P0.05);42 d,與對照組相比,VM15+LY1組和LY1組肉仔雞血清IgG含量顯著升高(P0.05),LY1組IgA和IgM顯著升高(P0.05)。綜上,0.1%乳酸菌和酵母菌復(fù)合菌劑及其與維吉尼亞霉素聯(lián)合使用均能明顯改善腸道健康和提高免疫力,促進肉仔雞生長。
[Abstract]:In this experiment, the production performance, slaughter performance, meat quality, intestinal health, serum biochemistry index of vergeniamycin were studied by adding 0.1% lactic acid bacteria and yeast compound bacteria to diet. The effects of antioxidant ability and immune ability provide scientific basis for the use of the compound bacteria in broiler production. 400 1-day-old healthy AA broilers were divided into 4 treatments with 5 replicates per treatment according to the principle of similar body weight. The control group was fed with basic diet, and the three experimental groups were fed with VM15 LY1 + VM15 LY1 + LY1 + VM15 LY1 + VM15 LY1 + VM15 LY1 + VM15 LY1 + VM15 LY1 + VM15 LY1 + VM15 LY1 + VM15 LY1 + VM15 LY1 + VM15 LY1 + VM15 LY1 + VM15 LY1 + VM15 LY1 for 15 mg/kg respectively. The experiment was divided into two groups: early stage (21 d) and anaphase (22 min 42 d), with a total of 42 d. The results showed that compared with the control group, the weight of broilers in VM30 VM15 LY1 and LY1 groups increased significantly at 42 days, and the body weight in VM15 LY1 group was significantly higher than that in LY1 and VM30 groups. In the later stage, compared with the control and VM30 groups, the average daily gain (ADG) of VM15 LY1 and LY1 groups was significantly higher than that of control group (P 0.05) and that of LY1 group (F / G) was significantly lower than that of control group (P 0.05). For the whole period, compared with the control group, ADG in the trial group was significantly higher than that in the VM30 and LY1 groups, and the ratio of pectoralis muscle in the VM15 LY1 group was significantly higher than that in the control group (P 0.05), and in the VM15 LY1 group was significantly higher than that in the control group (P 0.05. 3) and in the control group, the rate of pectoralis muscle in 42 days was significantly higher than that in the control group (P < 0.05. 3) and that in the LY1 group was significantly lower than that in the control group. Compared with the control group, the red degree of pectoralis muscle in the three experimental groups increased significantly at 45 min. The 24 h red value of P0.05 LY1 group was significantly higher than that of the control group (P 0.05). The height of jejunum villi in the 21 d LY1 group was significantly higher than that in the control group. The villus height / crypt depth of duodenum and jejunum increased significantly, while the depth of jejunal crypt decreased significantly in P0.05VM15 LY1 group. The ileal villus height / crypt depth increased significantly in P0.05 / VM15 LY1 group. The villi height and chorion height of duodenum and jejunum in LY1 group and LY1 group were significantly increased. The hair height / crypt depth increased significantly for 42 days. Compared with the control group, the number of Escherichia coli and Escherichia coli / lactic acid bacteria in the caecum of VM15 LY1 group and LY1 group decreased significantly for 42 days. Compared with the control group, the serum total protein content of VM15 LY1 group and LY1 group was significantly decreased. Compared with the control group, the malondialdehyde (MDA) in the serum of the three experimental groups decreased significantly, the content of glutathione peroxide in the serum of the broilers in the VM15 LY1 group and the LY1 group was significantly higher than that in the control group for 21 days, and the content of glutathione peroxide in the serum of the broilers in the VM15 LY1 group and the LY1 group was significantly higher than that in the control group. Total superoxide dismutase (SOD) and glutathione peroxidase (GSH) activity in serum of broilers increased significantly (P 0.05N), and the content of malondialdehyde (MDA) decreased significantly. The total antioxidant capacity of VM15 LY1 group was significantly higher than that of other groups (P0.05G 路80.42 d). Compared with the control group, VM15 LY1 group and LY1 group had significantly higher total antioxidant capacity. Compared with the control group, the serum IgG content in the VM15 LY1 group and the LY1 group was significantly higher than that in the control group. The content of IgA in the P0.05 + LY1 group was significantly higher than that in the control group for 42 days. Compared with the control group, the content of serum IgG in the VM15 LY1 group and LY1 group was significantly higher than that in the control group. The levels of IgA and IgM in group P0.05 and LY1 were significantly higher than those in group P0.05. The combination of 0.1% lactic acid bacteria and yeast and its combination with Virginiamycin could significantly improve intestinal health and immunity and promote the growth of broilers.
【學(xué)位授予單位】：甘肅農(nóng)業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：S831.5

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