Effect of untreated, HCl treated or copper and iodine supplemented high glucosinolate mustard (Brassica juncea) meal on nutrient utilization, liver enzymes, thyroid hormones and growth of calves

Effect of various iodine supplementations, rapeseed meal application and two different iodine species on the iodine status and iodine excretion of dairy cows

“…No explanation could be found for the detected lower T 4 levels at iodine supplementation in the magnitude of the requirement (0.5 mg/kg DM). The absence of an impact of the RSM application on T 4 is concordant with former studies which as well applied RSM with low GSL contents (Papas et al, 1979;Zech et al, 1993) while high GSL contents of feed seem to cause reductions of T 4 (Papas et al, 1979;Tripathi et al, 2001).…”

Comparative assessment of soybean meal with high and low glucosinolate rapeseed–mustard cake as protein supplement on performance of growing crossbred calves

“…There are also reports41 of decreased T 4 level in growing calves fed on high glucosinolate mustard. The goitrogenic activity of RMC is ascribed to its degradation product, thiocyanate that inhibits trapping of iodide, and subsequently their accumulation in the follicular cells of thyroid as well as release of hormones, mainly T 4 from thyroid 40, 41…”

Therapeutic potentials of Brassica juncea: an overview

“…In general, glucosinolates are water-soluble anions, which in the presence of the enzyme myrosinase and water generate isothiocyanates, thiocyanates or nitriles (Morra, et al, 1994). The enzymatic hydrolysis of glucosinolates by membrane-bound thioglucosidase produces Yu et al, 2003;Tripathi et al, 2001;Goetz and Schraudolf, 1983;Schreiner et al, 2009. 2. Isothiocyanates I. Allyl isothiocyanate…”

“…Plasma T3 concentrations were found to be positively correlated with the growth rates of calves. Mustard meal, if treated with HCl or supplemented with copper and iodine, will result in better overall calf performance than if fed untreated and similar to that of soybean meal-based diets (Tripathi et al, 2001). Another study tested the nutritional performance and thyroid hormone status of adult goats fed graded levels of iodine when their diet contained a goitrogenic mustard (Brassica juncea) cake-based supplement.…”