本文關(guān)鍵詞：飼糧添加菊糖對肉仔雞生產(chǎn)性能、消化代謝及非特異性免疫功能的影響　出處：《沈陽農(nóng)業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 生產(chǎn)性能 消化代謝 免疫功能 菊糖 肉仔雞

【摘要】：本試驗旨在探討飼糧添加菊糖對肉仔雞生產(chǎn)性能、消化代謝及非特異性免疫功能的影響。試驗設(shè)計所采用的是單因素完全隨機化設(shè)計。選取300只1日齡的愛拔益加(AA+)肉仔雞,隨機的將其分為5組,每組有6個重復(fù),每個重復(fù)為10只雞。試驗Ⅰ組為對照組:飼喂基礎(chǔ)飼糧,試驗Ⅱ、Ⅲ、Ⅳ、Ⅴ組分別在基礎(chǔ)飼糧中添加0.05%、0.15%、0.25%、0.5%的菊糖。整個飼養(yǎng)試驗為期6周,在此期間各組的飼養(yǎng)管理條件相同,自由的采食與飲水。飼養(yǎng)試驗結(jié)束之后,每個重復(fù)選取1只雞,采用全收糞的試驗方法進行代謝試驗,測定相關(guān)營養(yǎng)物質(zhì)的代謝率與代謝能。屠宰前采集血清樣本,屠宰后,分離免疫器官,取消化道食糜測定消化酶活性,取十二指腸用于制備組織切片,測定組織形態(tài)。試驗結(jié)果表明:(1)飼糧添加菊糖對肉仔雞的生長性能無顯著影響(P0.05),菊糖添加量為0.05%時肉仔雞4～6周齡和1～6周齡的平均日采食量最高,分別較對照組提高了 3.53%、2.40%,添加量為0.5%時平均日采食量最低。菊糖添加量為0.5%時各階段料重比均為最低。(2)飼糧添加菊糖極顯著的影響干物質(zhì)代謝率和表觀代謝能(P0.01),顯著影響能量的表觀代謝率(P0.05),對粗蛋白、粗脂肪等養(yǎng)分代謝率無顯著影響(P0.05)。當(dāng)菊糖添加量為0.5%時干物質(zhì)的代謝率較對照組提高了 22.21%(P0.01),菊糖添加量為0.25%時能量的表觀代謝率和表觀代謝能分別較對照組提高了 19.63%(P0.05)和15.71%(P0.01);飼糧添加菊糖顯著提高了肉仔雞十二指腸淀粉酶、空腸胰蛋白酶的活性(P0.05),提高了空腸淀粉酶的活性(P0.05),菊糖添加量為0.5%時空腸胰蛋白酶、十二指腸淀粉酶活性顯著高于對照組(P0.05);飼糧中添加0.15%和0.25%的菊糖極顯著降低了肉仔雞胃pH值(P0.01);飼糧添加菊糖顯著提高了肉仔雞十二指腸的絨毛高度(P0.05),降低了十二指腸隱窩深度(P0.05)。菊糖添加量為0.15%時絨毛最高(1317.10 μm)。(3)飼糧添加菊糖,提高了肉仔雞胸腺、脾臟和法氏囊指數(shù),但各添加水平間無顯著差異(P0.05)。0.5%菊糖添加水平組肉仔雞胸腺、脾臟、法氏囊指數(shù)分別較對照組提高了 27.57%、16.28%、36.29%(P0.05);飼料添加菊糖極顯著提高了肉仔雞血清白蛋白的濃度(P0.01)。當(dāng)菊糖的添加量為0.5%時,血清白蛋白含量(14.35 g/L)極顯著地高于對照組(P0.01);飼料中添加菊糖極顯著提高了肉仔雞血清溶菌酶活性(P0.01),顯著提高了抗菌肽活性(P0.05),對堿性磷酸酶、補體活性無顯著影響(P0.05),0.15%菊糖添加水平組血清溶菌酶活性最高(335.89 U/mL),較對照組提高了 78.55%(P0.01),0.25%菊糖添加水平組抗菌肽的活性最高(347.16 U/mL),較對照組提高了 84.30%(P0.05)。綜合以上各指標(biāo)可以得出,飼糧添加菊糖顯著提高了消化酶活性和十二指腸絨毛高度,進而提高了肉仔雞對飼糧主要養(yǎng)分的代謝率和表觀代謝能,提高了非特異性免疫功能,且菊糖的適宜添加量為0.25%～0.5%。
[Abstract]:This experiment was conducted to investigate the dietary inulin on broiler performance, affecting digestion and metabolism and non specific immune function. The experimental design is a single factor completely randomized design. A total of 300 1 day old arbor acres (AA+) broilers were randomly divided into 5 groups, each group had 6 replicates repeat for each, 10 chickens. The first group was the control group: fed the basal diet, test II, III, IV, V group were added in the basic diet 0.05%, 0.15%, 0.25%, 0.5% inulin. The feeding experiment lasted for 6 weeks, during which the feeding and management conditions were the same, free. Food and drinking water. After the end of the experiment, 1 chickens from each replicate, the test method of total fecal collection of metabolic test, determination of nutrient metabolism and metabolic rate. Serum samples collected before slaughter, slaughter, immune organ separation, canceled tract test 瀹氭秷鍖栭叾媧繪，

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