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The present investigation was carried out with the objective of evaluating milk production and quality levels, supplementing rations with cassava foliage in animal feed, reason why it is found as a by-product of the crops and is not used. We worked with four rations of different levels of inclusion of cassava foliage: T1: ration without cassava foliage (control); T2, T3 and T4 with 10%, 20% and 30% cassava foliage respectively. Four Brown Swiss cows of different ages with an average weight of 480 kg and an average production of 7.5 L / d were used, distributed in the experimental design of a 4x4 square, with four treatments and four periods. The variables studied were: Production and quality of the milk, bromatological composition of the rations and profitability. The results show that the inclusion of different cassava foliage levels improved the protein content of the experimental rations, going from 15.02% in the control group to 15.45% for the T2; in treatment three (20% cassava foliage) generated an increase in milk production of 2.9 l / cow / day. The organoleptic characteristics and the quantification of the protein in the milk were conserved; however, the fat content showed a progressive decrease, with the T4 treatment (30% cassava foliage) being the lowest. Finally, profitability was acceptable in rations with cassava foliage; so it is concluded that the use of supplementary rations based on cassava foliage, is a viable alternative to improve milk production in the province of Manabí.

Raciones suplementarias con follaje de yuca (manihot esculenta crantz) en la alimentación de vacas lecheras brown swiss