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Chromium propionate in broilers: human food and broiler safety.
Poultry Science ( IF 4.4 ) Pub Date : 2019-08-08 , DOI: 10.3382/ps/pez444
J W Spears 1 , K E Lloyd 1 , C A Pickworth 1 , Y L Huang 1 , K Krafka 2 , J Hyda 2 , J L Grimes 3
Affiliation  

Chromium propionate (Cr Prop) is approved by the U.S. Food and Drug Administration Center for Veterinary Medicine for supplementation to broiler diets up to 0.20 mg Cr/kg diet. A 49-D study was conducted to: 1) determine the safety of Cr Prop when supplemented at 2 and 10 times (×) the approved feeding level over the normal life span of broilers, and 2) determine the effects of supplementing Cr Prop on Cr concentrations of tissues consumed by humans. On day zero, 216 Ross 708 broilers were stratified by weight within sex and randomly assigned to treatments. Dietary treatments were 0 (control), 0.40, and 2.0 mg supplemental Cr/kg diet from Cr Prop. There were 6 replicate cages each of male and female broilers per treatment. At the end of the study blood was collected for determination of plasma biochemical measurements and tissue samples were collected for Cr analysis. Supplementing 0.40 mg Cr/kg diet (2×) did not adversely affect broiler performance, mortality, plasma biochemical measurements or Cr concentrations in breast muscle, skin with adhering fat, or liver. Chromium propionate supplemented at 2.0 mg Cr/kg (10×) did not affect Cr concentrations in breast muscle or skin with adhering fat, but increased (P < 0.05) liver Cr concentrations. Supplementing Cr Prop at 10× the approved feeding level decreased feed intake and gain in male but not female broilers from days 21 to 49. Results of this study support the safety of Cr Prop in broiler diets, and indicate that Cr Prop supplementation to broiler diets at 2 or 10× the approved feeding level does not present a human health concern.

中文翻译:

肉鸡中的丙酸铬:人类食品和肉鸡安全。

丙酸铬 (Cr Prop) 已获得美国食品和药物管理局兽医中心的批准,可用于补充肉鸡日粮中高达 0.20 mg Cr/kg 的日粮。进行了一项 49-D 研究,目的是:1) 确定在肉鸡正常生命周期内以 2 和 10 倍 (×) 批准的饲喂水平补充 Cr Prop 时的安全性,以及 2) 确定补充 Cr Prop 对人体消耗的组织的 Cr 浓度。在第 0 天,216 只 Ross 708 肉鸡在性别内按体重分层并随机分配到治疗组。日粮处理为 0(对照)、0.40 和 2.0 mg Cr Prop 的补充 Cr/kg 日粮。每个处理有 6 个重复的笼子,每只雄性和雌性肉鸡。在研究结束时,收集血液用于测定血浆生化测量,并收集组织样本用于 Cr 分析。补充 0.40 mg Cr/kg 日粮 (2x) 不会对肉鸡生产性能、死亡率、血浆生化测量或胸肌、附着脂肪的皮肤或肝脏中的 Cr 浓度产生不利影响。以 2.0 mg Cr/kg (10×) 补充的丙酸铬不会影响附着脂肪的乳房肌肉或皮肤中的 Cr 浓度,但会增加 (P < 0.05) 肝脏 Cr 浓度。从 21 天到 49 天,以 10 倍批准的饲喂水平补充 Cr Prop 会降低雄性而非雌性肉鸡的采食量和增重。这项研究的结果支持 Cr Prop 在肉鸡日粮中的安全性,
更新日期:2020-04-17
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