Effects of hydrated sodium calcium aluminosilicate on fescue toxicosis and mineral absorption

Abstract

The possibility of supplementing livestock diets with an aluminosilicate to protect them from fescue toxicosis was investigated. An in vitro study showed that hydrated sodium calcium aluminosilicate (HSCAS) removed greater than 90% of the ergotamine from aqueous solutions at pH 7.8 or lower, indicating a high affinity of ergotamine for HSCAS in vitro. Rats fed diets containing tall fescue seed infested (E+) with the endophytic fungus Acremonium coenophialum had lower (P less than .05) feed intakes and weight gains than did rats fed diets containing uninfested (E-) tall fescue seed. When feed intake by rats fed the E- seed diet was limited to that of rats fed the E+ seed diet, weight gains did not differ, but testes weights and serum prolactin (PRL) concentrations were lower (P less than .05 and .10, respectively) in rats receiving E+ seed. Supplementing E+ seed diets with HSCAS did not eliminate effects of E+ seed on intake, PRL, or testes weights. Sheep fed E+ tall fescue hay had higher (P less than .05) rectal temperatures than did sheep fed an equal amount of E- tall fescue hay, but OM and N digestion coefficients did not differ between the two hays. Supplementing E+ hay diets with HSCAS did not eliminate the effect of E+ hay on rectal temperatures. Addition of 2% HSCAS to tall fescue hay diets did not affect apparent absorption by sheep of OM, N, Ca, P, Na, K, or Cu, but it reduced (P less than .05) the apparent absorption of Mg, Mn, and Zn.(ABSTRACT TRUNCATED AT 250 WORDS)

Concentrações séricas de minerais e funções hepática e renal de frangos intoxicados com aflatoxina e tratados com montmorilonita sódica

“…Chestnut et al (1992) relataram que o uso do adsorvente aluminosilicato sódio-cálcio hidratado (HSCAS) em ovelhas prejudicou a absorção de Mg. Neste trabalho, o uso de montmorilonita sódica, na formulação da ração para as aves, não alterou as concentrações séricas desse mineral, portanto, esse adsorvente, nas concentrações de 0,25 e 0,5%, não afeta a absorção intestinal de Mg. Apesar de esta argila possuir Mg, em sua composição (Wiles et al, 2004), não foi observado aumento nas concentrações séricas desse elemento.…”

Response of yellow catfish (Pelteobagrus fulvidraco) to different dietary concentrations of aflatoxin B1 and evaluation of an aflatoxin binder in offsetting its negative effects

“…No obstante, su capacidad de adsorción difiere fuertemente según el captador específico, su fuente y la estructura química de la micotoxina. Además, algunos captadores pueden tener un efecto negativo sobre el crecimiento debido a que afectan el uso de nutrientes y la absorción de minerales (Chestnut et al 1992, Kubena et al 1993.…”

“…However, their binding efficacy strongly differs according to the specific binder, its source, and the chemical structure of the mycotoxin. Additionally, some binders can have negative effects on growth due to their influence on nutrient utilization and mineral absorption (Chestnut et al 1992, Kubena et al 1993.…”

Studies of Lipid Monolayers Prepared from Native and Model Plant Membranes in Their Interaction with Zearalenone and Its Mixture with Selenium Ions

“…It is assumed that ZEA is bind to estrogen receptors in the membranes of animal’s cells that cause hyperestrogenism, resulting in various reproductive and infertility problems, because any compound with hormonal activity may act carcinogenically or genotoxically (Moss 2002; Kuciel-Lisieska et al 2008). Therefore, an important issue is to eliminate the toxicity of zearalenone by the binding of its molecules by organic and inorganic substances (Crespo-Sempere et al 2015; Chestnut et al 1992; Gowda and Ledoux 2008; Salah-Abbès et al 2009).

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