Goenaga Irantzu, García-Rodríguez Aser, Goiri Idoia, León-Ecay Sara, De Las Heras Joana, Aldai Noelia, Insausti Kizkitza
Tratamiento Subproductos Agroalimentarios, S.L. (TRASA), Camino San Juan s/n, 31320 Milagro, Spain.
Institute of Innovation and Sustainable Development in Food Chain (IS-FOOD), Higher Technical School of Agricultural Engineering and Bioscience, Campus de Arrosadía, Universidad Pública de Navarra (UPNA), 31006 Pamplona, Spain.
Animals (Basel). 2023 Apr 18;13(8):1391. doi: 10.3390/ani13081391.
This research aimed to evaluate the nutritional composition, in vitro digestibility, and gas production kinetics of 15 vegetable by-products generated by the agri-food industry compared with corn silage as a reference raw material. Nutritional characterization and in vitro ruminal fermentation tests were performed to determine in vitro organic matter digestibility and digestible energy values, short-chain fatty acids, and the gas production profile. Results indicate that vegetable by-products were more degradable, more extensively fermented, and fermented at a faster rate than corn silage. Going one step further in the valorization of these by-products in animal feed, the second part of the research aimed to compare the novel ration designed for calf fattening with a conventional one. An artificial rumen unit was used to obtain nutrient disappearance, rumen fermentation parameters, and gas production of rumen digesta. Very slight differences were observed between both experimental rations, with their composition being the main difference. Most of the unitary vegetable by-products and all mixes, as real examples of by-product generation in the agri-food industry, have higher digestibility and a greater nutritional value than corn silage. These by-products showed the potential to be used in ruminant-ensiled rations and could replace part of the ingredients in conventional diets.
本研究旨在评估农业食品工业产生的15种蔬菜副产品的营养成分、体外消化率和产气动力学，并与作为参考原料的玉米青贮饲料进行比较。进行了营养特性分析和体外瘤胃发酵试验，以测定体外有机物消化率和可消化能量值、短链脂肪酸以及产气情况。结果表明，蔬菜副产品比玉米青贮饲料更易降解、发酵更充分且发酵速度更快。为了进一步提高这些副产品在动物饲料中的价值，研究的第二部分旨在比较为犊牛育肥设计的新型日粮与传统日粮。使用人工瘤胃装置来测定瘤胃消化物的养分消失量、瘤胃发酵参数和产气情况。两种试验日粮之间观察到非常细微的差异，其组成是主要区别。作为农业食品工业副产品产生的实际例子，大多数单一蔬菜副产品和所有混合物的消化率都高于玉米青贮饲料，并具有更高的营养价值。这些副产品显示出可用于反刍动物青贮日粮的潜力，并可替代传统日粮中的部分成分。
