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The effect of dietary energy and protein levels on body weight, size, and microflora of ostrich chicks

机译：膳食能量和蛋白质水平对鸵鸟小鸡体重，大小和微生物的影响

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摘要

The aim of this study was to evaluate the effect of different dietary energy and protein supplements on performance, weekly body sizes or body frame size, and microbiota of ostrich chicks during 2-9 weeks of age. Two metabolic energy levels of 2400 and 2600 kcal/kg live weight and three protein levels of 20, 22, and 24% were used. A total of 36 ostrich chickens (Struthio camelus) of the blue and black African breed were used. Body weight, 12 body measurements (i.e., circumference of the head, neck, breast, abdomen, thigh, body height, length of tail, list the other 5 here) and excretion of microbial population (Escherichia coli, Coliforms bacteria, and Lactobacillus bacteria) were measured. Mean body weight in each week of the experiment was generally the lowest when chicks were offered 2600 kcal/kg dietary energy and 24% protein. Of the 12 body measurements, the breast, abdomen, and thigh circumference and also body length were greater at the lower energy (2400 kcal/kg) and higher protein (24%) levels. Total Aerobic bacteria excretion was generally lower in response to the diet containing the higher level of energy. We conclude that ostrich chickens during 2-9 weeks of age can grow on diets that contain lower energy levels.
机译：本研究的目的是评估不同膳食能量和蛋白质补充剂对2-9周龄鸵鸟雏鸡的每周身体尺寸或体框大小的影响，以及鸵鸟小鸡的微生物。使用2400和2600千卡/千克活重和三种蛋白质水平的两种代谢能量水平，20,22和24％。使用了36只鸵鸟鸡（Struthio Camelus）的蓝色和黑色非洲品种。体重，12体测量（即头部，颈部，乳房，腹部，大腿，身体高度，尾部长度，在此处列出其他5个）和微生物种群的排泄（大肠杆菌，大肠杆菌细菌和乳酸杆菌细菌排泄）被测量。当雏鸡提供2600千卡/千克膳食能量和24％蛋白质时，实验中每周的平均体重通常是最低的。在12个体测量中，乳房，腹部和大腿周长以及体长在较低的能量（2400kcal / kg）和更高的蛋白质（24％）水平上更大。响应于含有较高能量水平的饮食而较低的有氧细菌排泄通常较低。我们得出结论，鸵鸟鸡在2-9周龄的年龄可能会在含有较低能量水平的饮食中生长。

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