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Growth performance in heavy lambs experimentally treated with 17 beta-estradiol

机译：用17β-雌二醇实验处理的重羊羔的生长性能

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摘要

European and Italian legislation have banned use of growth promoters in livestock since 1988, but epidemiological data show that anabolic drugs are still being used illegally. Recent surveys carried out on the cattle farms in Northern Italy have confirmed the presence of growth-promoting hormones. Authors report data on growth performances in 80 Valle del Belice x Comisana weaned lambs experimentally treated with 17 beta-estradiol with 0.5 ml solution of oil Depot Estradiol A (R) (containing 5 mg of 17 beta-estradiol valerate) by intramuscular injection into the thigh. The experiment was founded by the National Ministry of Health, to validate histological test for surveillance and control of growth-promoting hormones in sheep. This study confirmed the strong correlation between clinical and anatomopathological features and growth performances of treated animals. Otherwise, no significant differences were found on in vivo performance of the lambs. Estradiol treatment showed heavier shoulders and necks on treated lambs, while the loins were significantly lighter. Moreover, lamb-estradiol-treated groups showed lower separable and inseparable fat percentage than lamb-control groups.
机译：自1988年以来，欧洲和意大利的立法已禁止在牲畜中使用生长促进剂，但流行病学数据表明，合成代谢药物仍在非法使用。最近在意大利北部的养牛场进行的调查证实，存在促生长激素。作者报告了80头Valle del Belice x Comisana断奶羔羊的生长性能数据，这些肌肉是通过肌肉注射到0.5 ml的油性雌二醇A（R）（含有5 mg 17β-雌二醇戊酸酯）溶液中，用17β-雌二醇进行实验处理的。大腿。该实验是由国家卫生部建立的，旨在验证用于监测和控制绵羊促生长激素的组织学测试。这项研究证实了治疗动物的临床和解剖病理特征与生长性能之间的密切关系。否则，在羔羊的体内性能上没有发现显着差异。雌二醇处理显示，处理过的羔羊的肩膀和脖子较重，而腰部则明显减轻。此外，与羔羊对照组相比，羔羊雌二醇治疗组显示出较低的可分离和不可分离的脂肪百分比。

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