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首页> 外文期刊>British Poultry Science >Colistin and tylosin enhances disaccharidase activities, and improves morphology and permeability of the intestine of broilers
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Colistin and tylosin enhances disaccharidase activities, and improves morphology and permeability of the intestine of broilers

机译:Colistin和Tylosin增强了多糖酶活性,提高了肉鸡肠道的形态和渗透性

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摘要

1. The present study focused on the potential effects of antibiotics on intestinal digestion and integrity in broilers in terms of disaccharidase activity, electrophysiological properties and morphology. 2. One-day-old Arbour Acres birds were randomly allocated to one of four treatment groups for 42 days; control, colistin (20 mg/kg), tylosin (55 mg/kg) or chlortetracycline (CTC, 55 mg/kg) groups. Colistin and tylosin supplementation, but not CTC supplementation, caused an increase in body weight gain. 3. Colistin and tylosin elevated the activities of maltase and sucrase in the mucosa of the jejunum on d 42. Age caused a gradual decrease in the short-circuit current (Isc) and conductance (Gt) of the ileum, as a measure of permeability. The Isc and Gt of the ileum were higher in the colistin-supplemented broilers than in the control birds on d 42. Tylosin- and CTC-supplemented birds displayed Isc and Gt values similar to those of the control birds. 4. Colistin supplementation increased the villus area in the jejunum and thinned the muscularis mucosae in the ileum compared with the control group. Tylosin supplementation decreased the thickness of the muscularis mucosae and the depth of crypt in the jejunum. CTC thickened the muscularis mucosae in the jejunum and ileum. 5. Colistin and tylosin exhibited a beneficial effect on intestinal digestion and integrity by enhancing disaccharidase activities and improving gut morphology and permeability.
机译:本研究侧重于抗生素对肉鸡的肠外消化和完整性在二甲酸酶活性,电生理学性质和形态方面的潜在影响。 2.一天历史的乔木鸟类将鸟类随机分配给四个治疗组中的一个42天;对照,乳霉素(20mg / kg),替辛肽(55mg / kg)或氯化碳酸(CTC,55mg / kg)组。 Colistin和Tylosin补充,但不是CTC补充,导致体重增加增加。 3. Colistin和Tylosin在D 42的Jejunum粘膜中升高了麦芽酶和苏克基酶的活性。由于渗透率的量度,年龄导致回气的短路电流(ISC)和电导(GT)逐渐减少。在D 42的对照鸟类中,Colistin的肉鸡ISC和GT的ISC和GT均高于对照鸟类。泰洛斯 - 和CTC补充的鸟类显示ISC和GT值类似于对照禽类的鸟类。 4. Colistin补充在Jejunum中增加了绒毛区域,与对照组相比,在回肠中缩短了肌肉粘膜。泰罗素补充剂降低了肌肉粘膜的厚度和Jejunum的隐窝深度。 CTC在Jejunum和Hileum中加厚了肌肉粘膜。通过增强二丙酶活性和改善肠道形态和渗透性,Colistin和Tylosin对肠道消化和完整性表现出有益的影响。

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