Relative bioavailability in chicks of manganese from manganese propionate

Effect of manganese preconditioning and replacing inorganic manganese with organic manganese on performance of male broiler chicks

“…The contrasting results from our study to those referenced above could be explained in part by difference in experimental design and the supplemental dietary levels. For instance, in a study conducted by Brooks et al (2012) at the end of 7 D Mn depletion period, only broiler chicks with uniform body weight were used, while in our study broiler chicks were not weight matched after Mn preconditioning period (0 to 4 d). Although results from our study indicate that Mn preconditioning diet and supplemental Mn level affected BWG at 21 D, further studies are warranted to validate the reproducibility of these results taking into consideration that practical basal diet may have variable amount of trace mineral.…”

“…Performance data observed in this study were in contrast from other studies that reported no effect on performance when broilers were fed diets supplemented with inorganic or organic Mn sources. (Bao et al, 2007; Luo et al, 2007; Nollet et al, 2007; Li et al, 2011; Brooks et al, 2012; Lu et al, 2006). The contrasting results from our study to those referenced above could be explained in part by difference in experimental design and the supplemental dietary levels.…”

Effect of different levels of bioplex manganese along with probiotics and multi‐enzymes on performance and immune system indices of broilers

“…Therefore, increasing the activity of the bacteria in probiotics and lowering the pH can help improve the digestion of nutrients in the intestine by means of the enzyme. On the other hand, when the body's ability to access nutrients increases, the manganese element can better play its role in improving performance because manganese can digest, absorb and convert carbohydrates and fats into energy with the help of nutrients (Aftab & Bedford, 2018; Brooks et al., 2012; Hajati et al., 2018).…”

“…As it is a super oxidation cofactor, the need for manganese also increases during immune responses. Therefore, with sufficient manganese available in the body, the antibody titre will be higher and the immune system will be stronger, which may be the reason for the increased response to antibodies produced against NDV by increasing the level of manganese (Brooks et al., 2012).…”

Levels and sources of manganese on bone performance and resistance in broilers

“…Os autores avaliaram níveis crescentes de suplementação de Ca em dietas contendo baixo teor de P total e fitase para frangos de corte e concluíram que houve redução de Mn na matriz óssea das aves em função da alta concentração de Ca na dieta, o que impossibilitou a absorção do Mn pelo lúmen intestinal desses animais. Da mesma forma,Kiefer (2005) associa a baixa absorção de Ca pelo lúmen intestinal das aves a um excesso de Mn suplementar na dieta, mesmo o mineral estando em sua forma quelatada, o que é explicado pelo antagonismo existente na absorção dos minerais, quando estão em desequilíbrio no lúmen intestinal.Em contrapartida,Brooks et al (2012), testando a biodisponibilidade do Mn através de uma fonte inorgânica (MnSO4) e outra quelatada (propionato de Mn) em uma dieta basal de milho e farelo de soja com altos níveis de Ca e P, não observaram diferença em nenhum parâmetro ósseo analisado para a fonte quelatada do mineral. Os autores concluíram que apesar das altas concentrações de Ca e P na dieta houve eficiente absorção do Mn na fonte quelatada, demonstrando a melhor biodisponibilidade dessa fonte mineral.Os outros parâmetros ósseos analisados neste trabalho, índice de Seedor, cinzas ósseas, concentração de P no fêmur e resistência óssea, não foram influenciados pelos níveis de Mn suplementados nas dietas dos frangos de corte, independente da fonte desse mineral.…”