Máximo Igor Luiz Carvalho, Dos Santos Nascimento Júlio Cézar, de Andrade Gilcifran Prestes, Izidro José Lypson Pinto Simões, de Albuquerque Priscilla Virgínio, do Nascimento Daniel Bezerra, Coêlho Janerson José, Amorim Marleyne José Afonso Accioly Lins, de Mello Alexandre Carneiro Leão, Costa Romero Marcos Pedrosa Brandão, Rabello Carlos Bôa-Viagem, Ludke Maria do Carmo Mohaupt Marques, Ribeiro Apolônio Gomes, de Santana Carolina Louise Nascimento, Pessoa Ricardo Alexandre Silva
Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Recife 52171-900, PE, Brazil.
Departamento de Zootecnia, Universidade Federal Rural de Pernambuco, Recife 52171-900, PE, Brazil.
Animals (Basel). 2024 Sep 12;14(18):2645. doi: 10.3390/ani14182645.
This study aimed to evaluate the nutritive value of three feeds ( sp., sp., and sp.) for sloths (), based on nutritional composition and in vitro gas production. After a 14-day adaptation period to these feeds, approximately 500 g of gastric contents were collected from three female sloths, processed, and incubated with the food samples to evaluate digestibility and in vitro degradation kinetics. Regarding the nutritional composition, the neutral detergent fiber (NDFcp) content was higher with 404 g kg DM ( = 0.001) in the leaves of sp. The non-fibrous carbohydrate contents were greater with 499 g kg DM in sp. ( = 0.002). The greatest cellulose content (211 g kg DM) was found in the leaves of , as well as the lowest value of 143 g kg DM for hemicellulose. Significant differences in the in vitro digestibility of crude protein ( = 0.041) were observed, with sp. showing the highest value at 547 g kg DM. In terms of kinetic parameters, sp. exhibited higher total gas production (Vt) at 99 mL ( = 0.023) and digestion rates of fibrous carbohydrates (kdFC) at 0.0223%/h ( = 0.020) ( < 0.05). The leaves of sp. and sp. showed potential as suitable feeds for , while sp. may have negative effects on dry matter intake due to its high NDF content, because of possible repletion effects on the stomach.
本研究旨在基于营养成分和体外产气情况，评估三种饲料（ 属、 属和 属）对树懒（ ）的营养价值。在对这些饲料进行14天的适应期后，从三只雌性树懒收集了约500克胃内容物，进行处理，并与食物样本一起孵育，以评估消化率和体外降解动力学。关于营养成分， 属叶片中的中性洗涤纤维（NDFcp）含量较高，为404克/千克干物质（ = 0.001）。 属中的非纤维碳水化合物含量更高，为499克/千克干物质（ = 0.002）。 属叶片中的纤维素含量最高（211克/千克干物质），半纤维素含量最低，为143克/千克干物质。观察到粗蛋白的体外消化率存在显著差异（ = 0.041）， 属的体外消化率最高，为547克/千克干物质。在动力学参数方面， 属的总产气量（Vt）较高，为99毫升（ = 0.023），纤维碳水化合物的消化率（kdFC）为0.0223%/小时（ = 0.020）（ < 0.05）。 属和 属的叶片显示出作为树懒适宜饲料的潜力，而 属由于其高NDF含量可能对干物质摄入量有负面影响，因为可能对胃有饱腹作用。
