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Use "lactations" in a sentence
""But in the move away from grass-fed cows in past 30-40 years to cereal grain and soya to pack in more energy for milk production, cows are becoming sick and lame - it is not the right diet for a ruminant - and are culled after two or three lactations.""
"Cows, goats and sheep normally give their maximum milk yield during their second and third lactations."
"Decreased milk flow usually occurs in an animal's first three lactations."