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glucosinolate/hémorragie
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Role of glucosinolates in the causation of liver haemorrhages in laying hens fed water-extracted or heat-treated rapeseed cakes.
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Glucosinolates were removed from whole rapeseed by a hot-water extraction procedure or depleted by heat treatment. When laying hens were maintained for three months on diets containing about 300 g kg-1 of these rapeseed cakes, the incidence of liver haemorrhages detected at post mortem examination
Rapeseed induced liver haemorrhage, reticulolysis and biochemical changes in laying hens: the effects of feeding high and low glucosinolate meals.
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Rapeseed meal hepatosis was produced by feeding high and low glucosinolate meals as a source of protein (about 200 g kg-1 diet) but could not be distinguished histologically from fatty liver-haemorrhagic syndrome which occurred in birds on the control diet. Both types of meal increased haemorrhage,
Rapeseed meal glucosinolates: metabolism and effect on performance in laying hens.
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Two experiments were conducted with Hyline Leghorn hens to study the metabolism and detrimental effects of rapeseed meal (RSM) glucosinolates. Raw Target RSM was force fed to 12 hens which were killed after varying time intervals (15 min., 30 min., 60 min.) and the contents of areas of the digestive
Analysis of a chemical defense in sawfly larvae: easy bleeding targets predatory wasps in late summer.
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Contact of certain sawfly larvae with predators frequently elicits an easy bleeding behavior involving local disruption of the integument and release of hemolymph droplets. The efficacy of this putative antipredator defense was investigated in the turnip sawfly, Athalia rosae, by using common garden
Incidence of liver haemorrhage among white leghorn strains fed on diets containing different types of rapeseed meals.
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1. There was a marked strain difference in the incidence of hepatic haemorrhage in White Leghorn hens receiving dietary rapeseed meal (RSM). 2. Tolerance to high dietary contents of RSM also varied between individual birds within a strain. 3. Glucosinolates were implicated in the development of
Sequestration of host plant glucosinolates in the defensive hemolymph of the sawfly Athalia rosae.
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Interactions between insects and glucosinolate-containing plant species have been investigated for a long time. Although the glucosinolate-myrosinase system is believed to act as a defense mechanism against generalist herbivores and fungi, several specialist insects use these secondary metabolites
Histological and serum biochemical effects of 1-isothiocyanato-3- (methylsulphinyl)-propane in the F344 rat.
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1-Isothiocyanato-3-(methylsulphinyl)-propane (IMSP or iberin) is one of the major glucosinolate hydrolysis products found in cruciferous vegetables. The toxicity of IMSP after oral administration is unknown. This study examined the histological lesions and serum biochemical alterations resulting
Productive performance and liver lesions in two strains of laying hens receiving two rapeseed meals.
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A comparative study was conducted to determine the effect of two varieties of rapeseed meal at 10 and 20% levels in the diet on the productive performance, organ weights and liver lesions of two commercial strains of laying hens. The double-low (Brassica napus 1788) rapeseed meal appeared to be
Effectiveness of the defence mechanism of the turnip sawfly, Athalia rosae (Hymenoptera: Tenthredinidae), against predation by lizards.
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The turnip sawfly, Athalia rosae Linnaeus, is a pest on cruciferous crops. Larvae sequester secondary plant compounds, namely glucosinolates, in their haemolymph. When attacked, their integument is easily disrupted and a droplet of haemolymph is exuded ('easy bleeding'). This has been shown to be an
Chemical defence in a sawfly: genetic components of variation in relevant life-history traits.
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Larvae of several tenthredinid sawfly species readily release droplets of haemolymph through their integument when attacked by predators. This defence mechanism via 'bleeding' is characterised by a low integument resistance and a high haemolymph deterrence. Both traits are variable, and negatively
Protective effect of sulforaphane against oxidative stress: recent advances.
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Sulforaphane [1-isothiocyanate-(4R)-(methylsulfinyl)butane] is a natural dietary isothiocyanate produced by the enzymatic action of the myrosinase on glucopharanin, a 4-methylsulfinylbutyl glucosinolate contained in cruciferous vegetables of the genus Brassica such as broccoli, brussel sprouts, and
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