【摘要】：為探討飼糧菊糖添加水平對肉仔雞消化代謝及非特異性免疫功能的影響,采用單因素完全隨機(jī)化設(shè)計,選取300只1日齡AA+肉仔雞,隨機(jī)分為5組,每組6個重復(fù),每個重復(fù)10只雞。對照組飼喂基礎(chǔ)飼糧,試驗組分別在對照組中添加0.5,1.5,2.5,5g·kg~(-1)的菊糖,飼養(yǎng)試驗6周,采用全收糞法進(jìn)行代謝試驗。結(jié)果表明:飼糧添加菊糖極顯著提高了肉仔雞干物質(zhì)的代謝率和表觀代謝能(p0.01)。5g·kg~(-1)菊糖添加組顯著提高了肉仔雞十二指腸淀粉酶和空腸胰蛋白酶活性(p0.05)。1.5g·kg~(-1)和2.5g·kg~(-1)菊糖添加組腺胃內(nèi)容物p H值極顯著低于對照組(p0.01),而十二指腸絨毛高度顯著高于對照組(p0.05);飼糧添加菊糖對肉仔雞免疫器官指數(shù)無顯著影響(p0.05),但1.5~5g·kg~(-1)菊糖添加組顯著提高了肉仔雞血清白蛋白濃度,1.5g·kg~(-1)菊糖添加組肉仔雞血清溶菌酶含量最高(335.89 U·m L-1),較對照組提高78.55%(p0.05);2.5g·kg~(-1)菊糖添加組肉仔雞血清抗菌肽活性最高,較對照組提高84.30%(p0.05),飼糧添加菊糖對肉仔雞血清堿性磷酸酶和補(bǔ)體活性無顯著影響(p0.05)。綜上,在本試驗條件下,飼糧添加2.5~5g·kg~(-1)菊糖有利于肉仔雞養(yǎng)分的消化和代謝,提高了機(jī)體的非特異性免疫功能。
[Abstract]:In order to investigate the effect of dietary inulin supplementation level on digestion and metabolism and non-specific immune function of broilers, 300 1-day-old AA broilers were randomly divided into 5 groups with 6 replicates in each group. Each repeats ten chickens. The control group was fed with basic diet, and the control group was fed with 0.5g kg~ (-1) of 0.5g kg~ (-1) in the control group. After 6 weeks of feeding, the metabolic test was carried out with the method of total fecal collection. The results showed that dietary inulin significantly increased dry matter metabolism rate and apparent metabolic energy (p0.01). 5g kg~ (-1) chrysanthemum supplementation significantly increased duodenal amylase and jejunum pancreas in broilers. The activity of protease, 1.5g kg~ (-1) and 2.5g kg~ (-1), the pH of glandular gastric contents in the addition group were significantly lower than those in the control group (p0.01). The height of duodenal villi was significantly higher than that of control group (p0.05). There was no significant effect on the immune organ index of broilers supplemented with inulin (p0. 05), but the serum albumin concentration of broilers was significantly increased by adding 1. 5 g kg~ (- 1) chrysanthemum. The content of serum lysozyme in 1.5 g kg~ (-1) inulin group was the highest (335.89 U mL ~ (-1), which was 78.55% higher than that in control group. The serum antimicrobial peptide activity of broilers supplemented with 2.5 g kg~ (-1) inulin was the highest, which was 84.30% higher than that of the control group, but the serum alkaline phosphatase and complement activity of broilers were not significantly affected by dietary inulin supplementation (p0.05). In conclusion, the addition of 2.5g kg~ (-1) to diet was beneficial to nutrient digestion and metabolism of broilers, and improved the non-specific immune function of broilers.
【作者單位】： 沈陽農(nóng)業(yè)大學(xué)畜牧獸醫(yī)學(xué)院;
【基金】：國家自然科學(xué)基金項目(31372328)
【分類號】：S831.5

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