Über die Eignung nach verschiedenen Verfahren hergestellter Rapsextraktionsschrote für die Broilermast 1. Mitt. Ergebnisse eines Mast‐ und Bilanzversuches einschließlich Schlachtkörperbeurteilung

Self Cite

From the present review it is clear that glucosinolates and their breakdown products may pass in small amounts into such products as meat, milk or eggs without noticeable deterioration in their taste. When applying low glucosinolate rapeseed meal (LG-RSM) as the sole high protein component of concentrate mixture for cows, the level of rapeseed glucosinolates breakdown products should not exceed 0.1 mumol/l oxazolidinethione, 10 mumol/l unsaturated nitriles and 100 mumol/l thiocyanate. At these levels no evidence has been found to indicate the negative influence of glucosinolates breakdown products on the sensory properties of milk or threat for consumers. No published information appears to be available suggesting that glucosinolates have any deleterious effect on the carcass flavour in cattle. Even at a 20% inclusion of LG-RSM in diets no impairment on visual scores or sensory evaluation was found in pig's or broiler's carcass. Glucosinolated, chiefly progoitrin, which depress trimethylamine oxidation thus clearly affect the taint in eggs. In birds with genetically conditioned susceptibility (brown layers) fishy taint can be observed even at 0.3 microM progoitrin, i.e. approximately 0.5 microM total glucosinolates in 1 g diet. Assuming a threefold higher threshold for white layers (1 microM progoitrin in 1 g diet) fishy taint can be expected at a 10% LG-RSM level in diet, and only very low glucosinolate rapeseed meals can be fed to layers without the risk of fishy taint in eggs.

“…Other studies [13, 37,49] have examined responses of broiler birds to a wide range of glucosinolate intakes (0 -13.7 pM combined isothiocyanate and oxazolidinethione/g diet).…”

Section: Carcassmentioning

confidence: 99%

Rapeseed meal‐Glucosinolates and their antinutritional effects Part 6. Taint in end‐products

Mawson

Heaney

Zduńczyk

et al. 1995

Self Cite

Über die Eignung nach verschiedenen Verfahren hergestellter Rapsextraktionsschrote für die Broilermast 2. Mitt. Zur strumigenen Wirkung von Rapsextraktionsschrot

Rotkiewicz

Koska

Kozlowski

et al. 1981

In a fattening experiment with rapeseed meals produced by different techniques (cf. Part I) on broiler chickens, each experimental ration contained 10% of a variant rapeseed meal. The thyroid glands of the broiler chickens (allotted to 8 groups according to their diets) were examined for mass gain and submitted to various histopathological, biochemical and morphometric procedures. The variants of rapeseed meal applied to the animals in the groups IV, III and I have been found to be toxic. In contrast, the effects of the other variants of rapeseed meal on the morphology of the thyroid gland have been negligible.

Rapeseed: Constituents and protein products. Part 3. Nutritional value of protein‐enriched products

Brückner

Mieth

1984

Self Cite