Milk yield and composition of Moxoto dairy goats fed diets containing maniçoba hay (Manihot glaziovii Muel Arg.)

Abstract

This research was conducted with objective to evaluate the utilization of maniçoba hay (Manihot glaziovii Muell Arg.) in different levels (30, 40, 50 e 60%) on performance and composition of Moxoto goat milk. It was used eight multiparous does (44 kg BW) averaged 60 days of lactation, allocated in two 4 x 4 Latin squares design, with four treatments, four experimental periods and four animals. Each experimental period lasted 15 days (ten for animal adaptation to the diets and five days for data collection. The animal were milked twice daily at 06h30min and 16h00min, being made the milk control through individual weighing of the milk during five days each experimental period. The values to average milk yield (1,38 kg/day), milk fat corrected milk yield (1,43 kg/day), as well as, the mean daily milk fat contents (4,26%), total protein (3,69%), lactose (4,48%), total solids (13,12%) solids nonfat (8,97%) and acidity (18oD) from milk was not affected by the diets. The net energy balance was positive to all the treatments. Therefore, the Maniçoba hay can be used in until 60% of diet, without causing damage to the performance of animals.