为研究外源寡糖对奶山羊血清生化指标和抗氧化指标的影响,试验选用体况良好、年龄相近、体重(32.80±2.45) kg的崂山奶山羊6只,采用分期分组试验设计,分别饲喂添加1%(以有效含量计)甘露寡糖、半乳甘露寡糖、果寡糖、寡木糖和异麦芽寡糖的试验饲粮,另设不添加寡糖的对照组。试验共分为4期,每期35 d,其中预试期7 d,正试期28 d。结果表明:与对照组相比,果寡糖可显著降低血清丙二醛和低密度脂蛋白胆固醇含量(P<0.05),显著提高血清中总蛋白和球蛋白含量(P<0.05);甘露寡糖可显著降低血清丙二醛含量和谷丙转氨酶活性(P<0.05),提高血清中球蛋白和血清磷含量(P<0.05);半乳甘露寡糖可显著提高血清中总蛋白(P<0.05)、球蛋白(P<0.01)、高密度脂蛋白胆固醇(P<0.05)和血清磷含量(P<0.05),增强血清总超氧化物歧化酶活性(P<0.05),降低血清丙二醛(P<0.01)、尿素氮(P<0.05)、甘油三酯(P<0.05)和低密度脂蛋白胆固醇(P<0.05)含量,降低血清谷丙转氨酶活性(P<0.05)。各种寡糖对奶山羊血清谷草转氨酶、谷胱甘肽过氧化物酶活性和白蛋白、葡萄糖、总胆固醇、血清钙含量无显著影响(P>0.05)。综上所述,饲粮中添加不同寡糖能够在一定水平上提高奶山羊的抗氧化能力,改善机体脂质代谢、蛋白质合成以及钙、磷的吸收,且对肝脏和心脏无损害,建议在奶山羊饲粮中添加的寡糖种类有果寡糖、甘露寡糖和半乳甘露寡糖,其中半乳甘露寡糖为首选。
肖宇, 王利华, 孙国强, 程明, 汪文鑫, 张孝凯, 祁茹, 褚永康, 林英庭
. 外源寡糖对奶山羊血清生化指标和抗氧化指标的影响[J]. 动物营养学报, 2012
, 24(2)
: 342
-348
.
DOI: 10.3969/j.issn.1006-267x.2012.02.022
Effects of different exogenous oligosaccharides on serum biochemical indices and antioxidant indices of dairy goats were studied in this experiment. Six healthy dairy goats with an average body weight of (32.80±2.45) kg and similar age were used in a staging and grouping experimental design. Goats in the experimental groups were fed diets supplemented with 1% mannan oligosaccharides (MOS), galactomannan oligosaccharides (GMOS), fructooligosccharide (FOS), xylooligosaccharide (XOS) and isomalt oligosaccharides (IMO), respectively. The goat in the control group was fed a basal diet without oligosaccharides. The trial consisted of 4 stages. Each stage lasted for 35 days (7-day pretrial period and 28-day trial period). The results showed that compared with the control group, FOS significantly decreased the contents of malonaldehyde (MDA) and low density lipoprotein cholesterol (LDL-C) in serum (P<0.05), and significantly increased the contents of total protein (TP) and globulin (GLB) in serum (P<0.05); MOS significantly decreased MDA content and glutamic pyruvic transaminase (GPT) activity in serum (P<0.05), and increased the contents of GLB and phosphorus in serum (P<0.05); GMOS significantly increased the contents of TP (P<0.05), GLB (P<0.01), high density lipoprotein cholesterol (P<0.05), phosphorus (P<0.05) and total superoxide dismutase activity in serum (P<0.05), and decreased the contents of MDA (P<0.01), urea nitrogen (P<0.05), triglyceride (P<0.05), LDL-C (P<0.05) and GPT activity (P<0.05), while oligosaccharides had no significant effects on the activities of glutamic oxalacetic transaminase, glutathione peroxidase, and the contents of albumin, glucose, total cholesterol and calcium in serum (P>0.05). In conclusion, oligosaccharides can enhance the antioxidant ability to a certain extent, improve lipid and protein metabolism, promote the absorption of calcium and phosphorus, and have no liver and heart damage in dairy goats. Therefore, it is suggested that FOS, MOS, GMOS can be used to supplement diets for dairy goats, and the GMOS is preferred.
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