RT Journal Article
T1 Assessment of macroalgae and macroalgal extracts as a source of minerals in need of fine-tuning in multiple livestock production systems
A1 Al-Soufi Novo, Sabela
A1 García Alonso, Javier
A1 Muíños, Antonio
A1 Pereira Lestayo, Víctor
A1 Piñeiro Gómez, Verónica
A1 Miranda Castañón, Marta Inés
A1 García Vaquero, Marco
A1 López Alonso, María Marta
K1 Essential trace and toxic elements
K1 Feed
K1 Seaweed
K1 Iodine
K1 Inorganic arsenic
K1 Organic arsenic
AB This study evaluates the levels of macrominerals (Ca, Mg, P, K, Na, S), essential trace elements (Co, Cr, Cu, Fe, I, Mn, Mo, Ni, Se, Zn) and potentially toxic trace elements (Cd, Hg, Pb, As (inorganic and organic)) in seven species of macroalgae and in their extracts. The potential maximum levels of inclusion of macroalgal biomass and extracts in feed were assessed in multiple livestock (swine, ruminant, poultry, leporine and pisciculture). Overall, macroalgae contained high levels of I, reaching its highest levels in S. latissima (4131 mg/kg DM) and L. ochroleuca (2780 mg/kg DM). Arsenic concentrations ranged from 4.10 mg/kg DM in Ulva spp. to 68.9 mg/kg DM in S. latissima. Arsenic was mainly present as arsenosugars, of relatively low toxicity. Extracts had higher macrominerals and I levels, and lower essential and toxic trace elements levels compared to the biomass. Macroalgal biomass and extracts can be added to feed at 1–5 % to fulfill the physiological needs of multiple livestock, being I contents the main factor limiting highest inclusion rates. Inclusion of S. latissima and L. ochroleuca should be limited to 0.72 and 0.66 %, respectively. Maximum level of inclusion of different macroalgal products, as dried biomass or extracts, must be finely tuned. Low levels of inclusion of macroalgae and/or extracts in feed can be considered as an efficient and natural strategy to fulfill the macrominerals and iodine needs of multiple livestock
PB Elsevier
SN 0377-8401
YR 2024
FD 2024-11-21
LK https://hdl.handle.net/10347/44648
UL https://hdl.handle.net/10347/44648
LA eng
NO Sabela Al-Soufi, Javier García, Antonio Muíños, Víctor Pereira, Verónica Piñeiro, Marta Miranda, Marco García-Vaquero, Marta López-Alonso, Assessment of macroalgae and macroalgal extracts as a source of minerals in need of fine-tuning in multiple livestock production systems, Animal Feed Science and Technology, Volume 319, 2025, 116154, ISSN 0377-8401, https://doi.org/10.1016/j.anifeedsci.2024.116154
NO 80 % by the European Agricultural Fund for Rural Development (EAFRD) of the European Union and by 20 % by the Ministry of Agriculture, Fisheries and Food, within the framework of the National Rural Development Program 2014–2020
NO Axencia Galega de Innovación (grant number ED431B 2023/008)
NO The General Directorate for Rural Development, Innovation and Agrifood Training (DGDRIFA) is the authority in charge of applying this aid. Budget: EUR 492,580.38. Total grant: EUR 485,043.58. Funding number: 2020-PN216 (O00000226e2000044671)
DS Minerva
RD 6 jun 2026