Chaves Andreia A M, Ribeiro David M, Martins Cátia F, Fernandes Tatiane, Maia Margarida R G, Fonseca António J M, Cabrita Ana R J, Alves Susana P, Pinho Mário, Bessa Rui J B, de Almeida André M, Freire João P B
LEAF-Linking Landscape, Environment, Agriculture and Food Research Center, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal.
Associate Laboratory TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal.
Animals (Basel). 2024 Dec 11;14(24):3575. doi: 10.3390/ani14243575.
This study evaluates the nutritional value of spray-dried biomass to infer its applicability for weaner piglet feeding. Twenty-four piglets were randomly allocated to four dietary treatments ( = 6) with increasing inclusion (0, 5, 10, and 15%) levels. After a 4-day adaptation period, the digestibility experiment lasted two weeks, with daily excreta collection. Total tract apparent digestibility (TTAD), N balance, intestinal pH, histomorphology, and volatile fatty acid (VFA) concentrations were measured. No significant differences were observed in feed intake, growth, or intestinal morphology ( > 0.05). N intake increased linearly ( = 0.005) with inclusion, while N retention efficiency remained unchanged ( = 0.058). VFA concentrations decreased linearly ( < 0.001). The TTAD of dry matter (DM), organic matter, ether extract, and gross energy decreased ( < 0.05) with higher levels, while the ash TTAD increased ( < 0.001). The estimated TTAD values for biomass were 72.5% for DM, 82.9% for N, and 64.4% for gross energy. The digestible energy, metabolisable energy, and digestible crude protein values estimated for were 12.74 MJ/kg DM, 12.40 MJ/kg DM, and 20.4% DM, respectively. This information enabled the first nutritional characterisation of for weaner piglets, ultimately leveraging its use in piglet diet formulation.
本研究评估喷雾干燥生物质的营养价值，以推断其在断奶仔猪饲养中的适用性。将24头仔猪随机分配到四种日粮处理组（每组n = 6），随着生物质添加水平的增加（0%、5%、10%和15%）。经过4天的适应期后，消化率实验持续两周，每天收集排泄物。测量全肠道表观消化率（TTAD）、氮平衡、肠道pH值、组织形态学和挥发性脂肪酸（VFA）浓度。在采食量、生长或肠道形态方面未观察到显著差异（P > 0.05）。氮摄入量随生物质添加量呈线性增加（P = 0.005），而氮保留效率保持不变（P = 0.058）。挥发性脂肪酸浓度呈线性下降（P < 0.001）。随着生物质水平的提高，干物质（DM）、有机物、乙醚提取物和总能的全肠道表观消化率下降（P < 0.05），而灰分的全肠道表观消化率增加（P < 0.001）。生物质的估计全肠道表观消化率值为：干物质72.5%、氮82.9%、总能64.4%。估算的生物质可消化能、代谢能和可消化粗蛋白值分别为12.74 MJ/kg DM、12.40 MJ/kg DM和20.4% DM。这些信息实现了对断奶仔猪生物质的首次营养特性描述，最终有助于其在仔猪日粮配方中的应用。
