The assessment of a new protein source–Rapeseed

Fenwick, G. R.

doi:10.1079/pns19820043

Cited by 52 publications

(30 citation statements)

References 41 publications

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“…Such variability has been attributed to the presence of anti-nutritional factors such as glucosinolates, which are found to affect the nutritional value of RSM as a protein source for pigs (Mawson et al 1993). The potential of RSM as a pig feed component is also limited by its high crude fibre content, almost double that of SBM (124 vs. 60 g/kg) (Sauvant et al 2004) and this in turn reduces the energy value and nutrient digestibility of the diet (Fenwick 1982). A more compelling factor governing modern nutrition principles is the formulation of diets on the basis of NE (Noblet 2007) and ileal digestible lysine (Tanksley and Knabe 1993), permitting a more accurate value of ''true'' energy and AA availability to the pig.…”

Section: Discussionmentioning

confidence: 96%

Influence of incrementally substituting dietary soya bean meal for rapeseed meal on nutrient digestibility, nitrogen excretion, growth performance and ammonia emissions from growing-finishing pigs

McDonnell

O’Shea

Figat

et al. 2010

Archives of Animal Nutrition

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A completely randomised design experiment was performed to examine the effects of replacing different levels of soya bean meal (SBM) with rapeseed meal (RSM) on the growth performance, carcass characteristics, apparent nutrient digestibility, nitrogen (N) balance and manure ammonia emissions of growing-finishing pigs. Pigs (n = 336; mean live weight 42.1 kg) were assigned to one of four dietary treatments containing per kg diet: 210 g SBM; 140 g SBM and 70 g RSM; 70 g SBM and 140 g RSM; and 210 g RSM. All diets were formulated on an ileal digestible amino acid, net energy and available phosphorus basis. There was no significant treatment effect on average daily gain, feed intake, feed conversion ratio and carcass characteristics. There was a linear decrease in gross energy digestibility (p < 0.01) as RSM increased at the expense of SBM in the diet. There was a linear decrease in urinary N excretion (p < 0.01), N digestibility (p < 0.05), total N excretion (p < 0.05) and N retention (p < 0.05) with increasing levels of RSM. There was no effect of dietary treatment on manure ammonia emissions. The results of this study indicate that RSM can be used as a direct replacement for SBM with no associated depression in performance, when formulated on an ileal digestible amino acid and net energy basis. Consumption of diets containing incremental levels of RSM linearly decreased urinary N and total N excretion, reflecting the associated decrease in crude protein concentrations.

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Section: Discussionmentioning

confidence: 96%

Influence of incrementally substituting dietary soya bean meal for rapeseed meal on nutrient digestibility, nitrogen excretion, growth performance and ammonia emissions from growing-finishing pigs

McDonnell

O’Shea

Figat

et al. 2010

Archives of Animal Nutrition

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“…In hens fed a diet with 8% RC, excretion of Ca and P was higher, and retentions were lower as compared with other experimental treatments (p ≤ 0.05). Based on the data in the literature, it may be stated that the main reason for the reduced availability of minerals in rapeseed is the high content of phytate in this plant (Nwokolo and Bragg 1977, Fenwick 1982, Żyła and Koreleski 1993. About two-thirds of the phosphorus in rapeseed is bound to phytate and is unavailable for poultry (Nelson 1976).…”

Section: Resultsmentioning

confidence: 99%

Egg performance, egg quality, and nutrient utilization in laying hens fed diets with different levels of rapeseed expeller cake

Świątkiewicz¹,

Koreleski²,

Arczewska-Włosek³

2008

AFSci

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The aim of this study was to evaluate the effect of different levels of rapeseed expeller cake (RC) in the diet of laying hens on egg performance, egg quality, retention and excretion of nitrogen, calcium and phosphorus, and metabolizability of energy. The experiment was carried out with 72 Bovans Brown hens, from 28 to 53 weeks of age. Experimental treatment consisted of four isonitrogenous and isocaloric corn-soybean diets (as calculated: 17% crude protein, 11.6 MJ/kg metabolizable energy, 0.81% lysine, 0.36% methionine, 3.60% calcium and 0.37% available phosphorus), containing 0, 4, 6 or 8% RC. The RC used was produced from double zero rapeseed and contained 29.3% crude protein, 17.4% crude fat, 10.8% crude fibre, 0.63% calcium, 0.97% phosphorus, 1.91% lysine and 0.84% methionine. During the experimental period, the dietary level of RC had no significant effects on egg performance and egg quality parameters. Boiled eggs from hens fed a diet with 8% RC were characterized by an inferior flavour to those from other groups. There were no treatment effects on nitrogen balance or metabolizability of energy, though the highest dietary level of RC negatively affected retention and excretion of calcium and phosphorus.

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“…The lower bioavailability of choline from sinapine [31,56] renders more of this substrate available for TMA production. Although amounts of TMA in eggs are small, it is detectable at levels as low as 0.8 pg/g egg yolk [25,31,361.…”

Section: Egg Taintmentioning

confidence: 99%

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

Mawson

Heaney

Zduńczyk

et al. 1995

Nahrung

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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.

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The assessment of a new protein source–Rapeseed

Cited by 52 publications

References 41 publications

Influence of incrementally substituting dietary soya bean meal for rapeseed meal on nutrient digestibility, nitrogen excretion, growth performance and ammonia emissions from growing-finishing pigs

Influence of incrementally substituting dietary soya bean meal for rapeseed meal on nutrient digestibility, nitrogen excretion, growth performance and ammonia emissions from growing-finishing pigs

Egg performance, egg quality, and nutrient utilization in laying hens fed diets with different levels of rapeseed expeller cake

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

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