Helmick Kelly E, Kendrick Erin L, Dierenfeld Ellen S
Woodland Park Zoo, 601 North 59th Street, Seattle, Washington 98103, USA.
J Zoo Wildl Med. 2011 Sep;42(3):460-7. doi: 10.1638/2010-0131.1.
Elevated serum iron parameters were lowered through dietary manipulation in captive Raggiana bird of paradise (Paradisaea raggiana). Study birds were part of a captive breeding program consisting of two males and one female, captive born, 3.5-9 yr of age. Serum iron, total iron binding capacity (TIBC), percentage saturation, body weight, albumin, aspartate aminotransferase, and hematocrit were monitored at regular intervals for 2.5 yr. Routine diet consisted of a variety of fruits, vegetables, a multivitamin supplement, and a commercial low iron avian pellet, with a dietary iron content of 55 mg/kg (dry matter basis) or 1.12 mg iron/bird/day. Dietary treatment involved removal of the commercial avian pellet for 30 days at 6-to 12-mo intervals, resulting in an iron content of 42 mg/kg (dry matter basis) or 0.64 mg iron/bird/day. Average serum iron and TIBC were decreased by 75% (TIBC) to 80% (serum iron) ofpretreatment values after one 30-day treatment. Average iron saturation levels were lowered by 10% of pretreatment values after one 30-day treatment. Average hematocrit, albumin, aspartate aminotransferase, and body weight remained unchanged. No adverse effects were noted through the 2.5-yr evaluation period, and breeding behavior was undisturbed. Periodic removal of low iron commercial pellets in the diet of captive bird of paradise is a safe and effective method for lowering serum iron values without need for handling. Periodic application of this technique may be useful as a preventive tool to maintain appropriate serum iron values in avian species susceptible to iron storage disease.
通过饮食控制,圈养的新几内亚极乐鸟(Paradisaea raggiana)血清铁参数升高的情况得到了改善。研究中的鸟是圈养繁殖计划的一部分,包括两只雄性和一只雌性,均为圈养出生,年龄在3.5至9岁之间。在2.5年的时间里定期监测血清铁、总铁结合力(TIBC)、饱和度百分比、体重、白蛋白、天冬氨酸转氨酶和血细胞比容。常规饮食包括各种水果、蔬菜、多种维生素补充剂和一种低铁商业鸟类颗粒饲料,饮食中铁含量为55毫克/千克(干物质基础)或1.12毫克铁/只/天。饮食处理包括每隔6至12个月去除商业鸟类颗粒饲料30天,从而使铁含量变为42毫克/千克(干物质基础)或0.64毫克铁/只/天。经过一次30天的处理后,平均血清铁和TIBC降至预处理值的75%(TIBC)至80%(血清铁)。经过一次30天的处理后,平均铁饱和度水平降至预处理值的10%。平均血细胞比容、白蛋白、天冬氨酸转氨酶和体重保持不变。在2.5年的评估期内未发现不良反应,繁殖行为也未受干扰。定期去除圈养极乐鸟饮食中的低铁商业颗粒饲料是一种安全有效的降低血清铁值的方法,无需进行处理。定期应用该技术可能作为一种预防工具,用于维持易患铁储存疾病的鸟类的适当血清铁值。