Relative bioavailability of iron from organic sources for weanling piglets

• Autor(a) principal: Luiggi, Fabiana Golin [UNESP]
• Data de Publicação: 2014
• Outros Autores: Berto, Dirlei Antonio [UNESP], Mello, Gabriela de [UNESP], Carneiro Girão, Lucio Vilela [UNESP], Ensá Junqueira Villela, Cássio Cordeiro [UNESP], Lo Tierzo, Vivian [UNESP], Amorim, Alessandro Borges [UNESP], Trindade Neto, Messias Alves da
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://www.uel.br/revistas/uel/index.php/semagrarias/article/view/16636; http://hdl.handle.net/11449/130248
• topic: Chelated mineral; Hemogram; Iron deficiency anemia; Nutrition; Swine; Anemia ferropriva; Hemograma; Mineral quelatado; Nutrição; Suínos

Some authors consider minerals from organic sources more bioavailable for pig nutrition in comparison with inorganic sources. To evaluate the relative iron bioavailability from the organic source iron carbo-amino-phospho-chelate (ICAPC) to weanling piglets, it was conducted an experiment with 126 commercial piglets, using iron sulfate monohydrate (S) as standard. The experiment had a randomized block design with seven treatments (diet without adding specific source of iron, diet with 50, 100 and 150 ppm iron from S and diet with 50, 100 and 150 ppm iron from ICAPC), six replications and three animals per experimental unit. Performance parameters (average daily gain - ADG, feed: gain ratio - F:G) and blood variables (hemoglobin - Hb, hematocrit - Ht, transferrin - TR, latent iron-binding capacity - LIBC, total iron-binding capacity - TIBC, serum iron - Fe and transferrin saturation index - TSI) were evaluated. At the end of the experiment a piglet from each experimental unit was slaughtered and its liver and spleen removed for assessment of iron concentration by flame atomic absorption spectrometry (FAAS). The evaluated sources of iron yielded similar results for the variables of interest, but the increase in iron intake was followed by a linear increase in ADG, Hb, Ht, Fe and TSI as well as a linear decrease in the values of F:G, TR, LIBC and TIBC. Iron bioavailabilities from both ICAPC and S sources are similar for weanling piglets.