Clay minerals as sorbents for mycotoxins in lactating goat’s diets: Intake, digestibility, blood chemistry, ruminal fermentation, milk yield and composition, and milk aflatoxin M1 content

Publication date: June 2019Source: Small Ruminant Research, Volume 175Author(s): G.A. Gouda, H.M. Khattab, M.A. Abdel-Wahhab, S.A. Abo El-Nor, H.M. El-Sayed, S.M. KholifAbstractWe assessed the effect of bentonite and montmorillonite, as sorbents, on feed utilization, lactation performance, and mycotoxin concentrations in milk. During the first week of lactation, fifteen lactating crossbred (Nubian × Baladi) goats weighing 20.5 ± 0.5 kg were randomly assigned to three treatments (five does each) in a complete randomized design for a 90-day trial with repeated measures. Goats were stratified according to parity and expected average milk yield to be fed daily with one of three diets: a basal diet containing 600 g concentrates and 400 g berseem hay (Control treatment), or the control diet supplemented with bentonite clay at 20 g/kg dry matter (DM) concentrate (Bentonite treatment), or the control diet supplemented with montmorillonite clay at 20 g/kg DM concentrate (Montmorillonite treatment). The basal diet used in all treatments was naturally contaminated with aflatoxin B1 (AFB1) at 56.7 μg/kg and zearalenone (ZEN) at 112.5 μg/kg. Additives had no effect on nutrient intake but increased (P < 0.05) the digestibility of DM, organic matter, crude protein, ether extract, non-fibre carbohydrates and neutral detergent fibre. The montmorillonite diet had a greater (P < 0.05) nutritive value than the bentonite and control diets. Does that recei...
Source: Small Ruminant Research - Category: Zoology Source Type: research