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首页> 美国卫生研究院文献>Poultry Science >Copper hydroxychloride is more efficacious than copper sulfate in improving broiler chickens growth performance both at nutritional and growth-promoting levels
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Copper hydroxychloride is more efficacious than copper sulfate in improving broiler chickens growth performance both at nutritional and growth-promoting levels

机译：硫酸铜比硫酸铜更有效在营养和生长促进水平上提高肉鸡的生长性能

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This study was designed to compare the effects of nutritional and growth-promoting levels of copper hydroxychloride (CH) with copper sulfate (CuSO4) on growth, carcass characteristics, tibia traits and mineral concentration in broilers fed a conventional wheat-soybean meal–based diet. Day-old Ross 308 male chicks (n = 864) were randomly assigned into 8 dietary treatments with 6 replicates of 18 chicks per treatment. The dietary treatments included a basal diet containing no supplemental copper (Cu) serving as the negative control (NC); basal diet supplemented with 15 or 200 mg/kg Cu as CuSO4; basal diet supplemented with either 15, 50, 100, 150, or 200 mg/kg Cu from CH. Diets were fed over the starter (day 1–14) and grower (day 14–35) phases. Birds in the NC group gained the same body weight and had similar feed conversion ratio (FCR) to birds receiving 15 mg/kg Cu as CuSO4, but birds receiving 15 mg/kg Cu as CH had a lower FCR than the NC birds (day 0–35; P < 0.05). Birds fed 200 mg/kg Cu as CH gained more weight (77 g/bird) and had a lower FCR (3.2 point) compared with those fed 200 mg/kg Cu as CuSO4 (P < 0.01). Based on broken-line regression models, the optimum inclusion level of Cu as CH in the diet for optimal body weight gain and FCR were estimated to be 109.5 and 72.3 mg/kg, respectively (P < 0.001). Carcass characteristics were not affected by dietary Cu sources or levels (P > 0.05). The highest and lowest tibia ash content were observed in birds fed diet with 150 mg/kg Cu as CH and 200 mg/kg Cu as CuSO4, respectively (P < 0.05). Supplementation with 200 mg/kg Cu as CH resulted in higher duodenal mucosa Cu content compared with the diet containing 200 mg/kg Cu as CuSO4 (P < 0.001). In conclusion, supplementation of Cu from CH was more efficacious than CuSO4 in promoting growth performance, both at nutritional and pharmacological levels.
机译：本研究旨在比较营养和生长促进硫酸铜（CH）铜氯氧化物（CH）水平对富含铜的生长，胴体特性，肉鸡膳食饮食中的生长，胴体特性，胫骨特征和矿物质浓度的影响。日龄龄罗斯308雄性小鸡（n = 864）被随机分配到8个饮食治疗中，每次治疗6只雏鸡重复。膳食处理包括含有不含补充铜（Cu）的基础饮食，用作阴性对照（NC）;基础饮食补充有15或200毫克/千克Cu作为Cuso4;基础饮食补充有15,50,100,150，或200mg / kg Cu。饮食喂食起始剂（第1-14天）和种植者（第14-35天）阶段。 NC组中的鸟类获得相同的体重，并且具有与CuSO4接受15mg / kg Cu的鸟类相同的饲料转化率（FCR），但接受15mg / kg Cu的鸟类比NC鸟类较低的FCR（日0-35; P <0.05）。喂养200mg / kg Cu的鸟类作为Ch获得更多的重量（77克/鸟），与喂食200mg / kg Cu的那些，与cuso4相比，较低的FCR（3.2点）（P <0.01）。基于破碎线回归模型，估计最佳体重增加和FCR饮食中Cu作为CH的最佳包容水平分别为109.5和72.3mg / kg（P <0.001）。胴体特性不受膳食Cu来源或水平的影响（P> 0.05）。在喂食饮食中的最高和最低胫骨灰分含量，分别为CH和200mg / kg Cu作为CH和200mg / kg Cu分别为CuSO4（P <0.05）。与含有200mg / kg Cu的饮食相比，用200mg / kg Cu的补充为Ch导致含有200mg / kg Cu的饮食，为CuSO4（P <0.001）。总之，在营养和药理学水平促进生长性能方面，在CH的促进生长性能方面的含量比CH从CH的补充更有效。

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