Effect of feeding distillery dried grains to lactating cows on farms in the southern dairy region of Chile

摘要

A field trial was conducted on five farms to determine the effect of feeding distillery dried grains (DDGS) on milk production in the southern dairy region of Chile. The trial was repeated on each farm during winter (July and August; primarily silage-based rations) and spring (November and December; pasture-based rations). Only for one farm could the treatments be applied concurrently by feeding different iso-nitrogenous concentrate mixes to randomly assigned cows in the milking parlor with data analyzed as a randomized complete block design. Milk yield tended (P -1 d -1 ) by 1.9 kg d -1 in winter and 1.8 kg d -1 in spring. In winter, milk protein yield was (P -1 . Milk fat content was (P -1 d -1 ) by 0.9 kg d -1 in winter. We conclude that DDGS was an effective dairy concentrate ingredient in the southern dairy region of Chile.