The protein content of commercial feeds for ratites ranges from _____ to _____ percent.
a. 6, 15 c. 23, 30
b. 16, 22 d. 35, 44
Question 2Serious interest in raising ratites in the United States began to develop during the mid-_____.
a. 1960s c. 1980s
b. 1970s d. 1990s