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首页> 外文期刊>Berliner und Munchener Tierarztliche Wochenschrift >Investigations on the antioxidative metabolism during the periparturient period in dairy goats with special regard to seasonal differences in feeding and management
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Investigations on the antioxidative metabolism during the periparturient period in dairy goats with special regard to seasonal differences in feeding and management

机译：奶山羊围产期抗氧化代谢的调查，特别注意饲养和管理的季节性差异

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摘要

In a herd of 1400 dairy goats with an average milk yield of 840 kg/year, 40 "Weisse Deutsche Edelziegen" (October-January: n = 19; April-July: n = 21) were examined. Venous blood samples were collected 6-8, 3-4 and < 2 weeks (wks) ante partum (a. p.) and 2-4 days (d), 3-4 and 6-8 wks post partum (p. p.). Antioxidative Capacity of Water soluble substances (ACW) and Trolox Equivalent Antioxidative Capacity (TEAC) were measured in serum; activities of superoxide dismutase (SOD) and glutathione peroxidase (GPX) were measured in an erythrocyte pellet and in whole blood. ACW and TEAC increased significantly 3-4 wks p. p. In summer these two parameters showed significantly higher concentrations than in winter. The SOD had a significantly higher activitiy < 2 wks a. p. and 6-8 wks p. p. GPX-activity showed a constant increase from the beginning of investigations and from 3-4 wks p. p. up to the end of investigations activities were significantly higher than 6-8 wks a. p. The samples ante partum and the first sample taken post partum showed significantly higher activities in summer than in winter. The present study shows, that the metabolic challenge associated to the periparturient period in combination with changing capacity of food intake, influences the antioxidative metabolism in dairy goats. Seasonal depending changes on feeding quality and climate (barn temperature, quality of feeding components) also influence this system.
机译：在一组1400只平均产奶量为840公斤/年的奶山羊中，检查了40只“ Weisse Deutsche Edelziegen”（10月至1月：n = 19; 4月至7月：n = 21）。在分娩前（a。p。）的6-8、3-4和<2周（周）和产后2-4天（d），3-4和6-8 wks（p。p。）收集静脉血样本。在血清中测量水溶性物质的抗氧化能力（ACW）和Trolox等效抗氧化能力（TEAC）;在红细胞沉淀和全血中测量了超氧化物歧化酶（SOD）和谷胱甘肽过氧化物酶（GPX）的活性。 ACW和TEAC每周显着增加3-4 wks。 p。在夏季，这两个参数显示出比冬季明显更高的浓度。 SOD的活性明显高于<2 wks a。 p。和6-8 wks p。 p。从研究开始和每星期3-4周开始，GPX活性显示出持续增加。 p。到调查结束时，活动明显高于6-8周。 p。产前和产后采集的第一个样品在夏季的活动明显高于冬季。本研究表明，与围产期有关的代谢挑战与食物摄入量的变化相结合，影响了乳山羊的抗氧化代谢。季节性取决于饲料质量和气候的变化（谷仓温度，饲料成分的质量）也会影响该系统。

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