Beckerbauer L M, Thiel-Cooper R, Ahn D U, Sell J L, Parrish F C, Beitz D C
Department of Animal Science, Iowa State University Ames 50011, USA.
Poult Sci. 2001 Feb;80(2):187-94. doi: 10.1093/ps/80.2.187.
Male and female emus were fed a diet rich in saturated fat (beef tallow) or a diet rich in unsaturated fat (soybean oil) until they weighed about 35 kg. Samples of subcutaneous and retroperitoneal adipose tissues and samples of six major meat cuts were taken for determination of composition. Emus fed the two different diets grew at similar rates, but the male emus had a higher percentage of carcass fat. The adipose tissue cells from males were larger than those from females. All six meat cuts averaged 2.2% fat, with the regular filet having the most and the inside and outside drums the least. Cholesterol concentration of all sizes of meat cuts averaged 32.2 mg/100 g meat. Diet did not influence cholesterol content of the rendered oil. Fan filets had the greatest concentration of cholesterol, and the inside and outside drums had the least. Source of dietary fat had no effect on fat and cholesterol content of the meats. Meat from emus fed beef tallow was more tender and juicy. Fan filets were the most tender meat, had the least intense flavor, and were the most flavorful. Untrained panelists were able to discriminate between emu meat and beef. Source of dietary fat did not influence the fatty acid compositions of the meats. As expected, the soybean oil-fed emus produced oil that was more polyunsaturated than did the tallow-fed emus.
雄性和雌性鸸鹋被喂食富含饱和脂肪的食物（牛脂）或富含不饱和脂肪的食物（大豆油），直到它们体重约为35千克。采集皮下和腹膜后脂肪组织样本以及六块主要肉块样本以测定其成分。喂食两种不同食物的鸸鹋生长速度相似，但雄性鸸鹋的胴体脂肪百分比更高。雄性的脂肪组织细胞比雌性的大。所有六块肉块的平均脂肪含量为2.2%，常规菲力牛排的脂肪含量最高，内外腿肉的脂肪含量最低。所有大小肉块的胆固醇浓度平均为32.2毫克/100克肉。饮食对提炼出的油中的胆固醇含量没有影响。扇形菲力牛排的胆固醇浓度最高，内外腿肉的胆固醇浓度最低。饮食脂肪来源对肉的脂肪和胆固醇含量没有影响。喂食牛脂的鸸鹋的肉更嫩多汁。扇形菲力牛排是最嫩的肉，味道最淡，也是最有风味的。未经训练的评判小组能够区分鸸鹋肉和牛肉。饮食脂肪来源不影响肉的脂肪酸组成。正如预期的那样，喂食大豆油的鸸鹋产出的油比喂食牛脂的鸸鹋产出的油多不饱和。
