Work

Chemical composition and ruminal degradability of tucumã (Astrocaryum aculeatum Meyer) peel as a by-product in ruminant feeding

Year: 2026

Type: article

Abstract: ABSTRACT This study evaluated the chemical composition and ruminal degradability of tucumã peel (Astrocaryum aculeatum), aiming at its use in ruminant feeding. Bromatological analyses revealed a high content of neutral detergent fiber (70.4%) and ether extract (10.5%), along with a low level of non-fibrous carbohydrates (3.2%), characteristics typical of forage-type feedstuffs. The indigestible carbohydrate fraction (C) was predominant (81.6%), while the potentially degradable fraction (B2) was very low (0.4%). Regarding protein, a high proportion of non-protein nitrogen (81.4%) was observed, which is important for microbial fermentation. Ruminal degradability parameters of dry matter, crude protein, and NDF indicated low potential degradability, reinforcing the limited digestibility of the residue. Nonetheless, tucumã peel shows potential as an alternative fiber source, especially during forage shortage periods or in systems focused on sustainability and the valorization of regional co-products. Its inclusion must be technically supported, considering its nutritional constraints. Further studies are recommended to evaluate its impact on voluntary intake, performance, and ruminal fermentation in different ruminant categories.

Source: Arquivo Brasileiro de Medicina Veterinária e Zootecnia

DOI: 10.1590/1678-4162-13626