Resumo

CARDONA-IGLESIAS, Juan Leonardo; ZAMBRANO-ORTIZ, Juan Ricardo  e  AVELLANEDA-AVELLANEDA, Yesid. Use of Coffea arabica and Saccharum officinarum L. silage as a feeding strategy for dual-purpose cattle. Pastos y Forrajes [online]. 2024, vol.47  Epub 28-Dez-2024. ISSN 2078-8452.

Objective: To evaluate the effect of partial substitution of commercial feeds by silages of Coffea arabica husk and Saccharum officinarum L top on milk productivity of dual-purpose cows in the Comunera province of the Santander department-Colombia.

Materials and Methods: Two experiments were carried out, in two locations, under Urochloa humidicola (Rendle) Morrone & Zuloaga grazing conditions. At location 1, 50 % of commercial feed was replaced by Coffea arabica husk silage. Two treatments were established: T1: grazing + balanced feed (2 kg/cow/day), T2: grazing + balanced feed (1 kg/cow/day) + C. arabica husk silage (3 kg/cow/day). In location 2, supplementation with S. officinarum silage was replaced by C. arabica husk silage in equal amounts. The treatments were: T1) grazing + balanced feed (3 kg/cow/day) + S. officinarum top silage (7 kg/cow/day) and T2) grazing + balanced feed (3 kg/cow/day) + coffee husk silage (7 kg/cow/day). A replicated crossover design was used, with 12 dual-purpose cows in each location. The nutritional composition of the feed supply was determined. Dry matter intake was estimated and milk production and composition, including milk fat, milk protein, total solids and urea nitrogen, were measured. The information was processed by analysis of variance and Tukey’s mean comparison test was applied to identify significant differences between treatments.

Results: The estimation of total dry matter intake did not show differences in any location (p > 0,05). In location 1, there was no statistical difference for the milk production variable, but there was for fat content (4,3 vs. 4,7 % for T1 and T2, respectively). In locality 2, the treatment that included C. arabica husk silage showed higher fat-corrected milk production (1 kg plus), 60, 20 and 50 g/day more milk fat, protein and total solids, respectively per cow compared with those that consumed S. officinarum top silage (p < 0,05).

Conclusions: Silage with C. arabica husk allowed higher productive performance in animals, which makes it possible to increase the productivity of the dairy sector while valorizing residues from the industry of this crop.

Palavras-chave : pollution; dairy production; crop residues.

        · resumo em Espanhol     · texto em Espanhol     · Inglês ( pdf ) | Espanhol ( pdf )