A total of 64 14-day-old
broiler hens (Ross-308) were raised until age 40 days under cold environmental
temperature conditions (15 C) and were fed a high energy
feed in order to incite pulmonary hypertension. Birds were randomly
assigned to two groups of which each group had eight replicate pens of
four birds each. Test diets contained 0 or 167 mg Na-DMG (Taminizer
D; Taminco N.V., Ghent, Belgium)/kg feed