Effect of refining on the nutritional value of rapeseed oils for the chick and rat

Lall, Santosh P.; Slinger, S. J.

doi:10.1002/jsfa.2740250411

Cited by 13 publications

(4 citation statements)

References 14 publications

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“…These results are somewhat contradictory to the previous reports that increased saturated fatty acid content of dietary rapeseed oil overcame the growth-depressing action of EA (Beare et al, 1963;Lall and Slinger, 1974;Salmon, 1969). Regardless of the source of oil fed, the apparent digestibility of total fatty acids was significantly (P<.05) reduced in the following order of 14.4, 12.8, and 5.7% for AL plus EA, CBO plus EA, and SFO plus EA, respectively, compared with the control (oil treatment without EA).…”

Section: Resultscontrasting

confidence: 84%

“…This was further confirmed with a chick study using rapeseed oil blended with a low level of saturated beef tallow in which the growth-depression was completely eliminated (Salmon, 1969). Furthermore, a synergism was suggested by chick studies when rapeseed oil was blended with a low level of animal tallow (Lall and Slinger, 1974). These findings imply that the growth-depressing effect of dietary EA may be a result of metabolic interaction(s) among fatty acids and that specific fatty acid profiles may nullify the detrimental effect of dietary EA.…”

Section: Introductionsupporting

confidence: 51%

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Effect of Dietary Erucic Acid on the Utilization of Oils or Fats by Growing Chicks

et al. 1985

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Free erucic acid (EA) (C22:1) was blended with Cambra oil (CBO), sunflower oil (SFO), and animal lard (AL) at 45% (w/w). Six experimental diets were formulated to incorporate either CBO, SFO, AL, or EA blended oils (CBO plus EA, SFO plus EA), or fats (AL plus EA) at 8%. The adverse effects of dietary EA blended with various types of oils or fats were studied by feeding 180-day-old White Leghorn cockerels for a 4-week growing period. In general, adverse effects of dietary EA were clearly reflected in feed consumption, chick growth, and apparent digestibility of total lipids as well as individual fatty acids. The AL plus EA produced significantly greater adverse effects than with SFO plus EA. The diet containing CBO (low EA, 5.1% rapeseed oil) depressed chick growth and feed consumption, but no additive effect was manifested when EA was supplemented. The fatty acid profile of dietary SFO appears to counteract the metabolic burden of excess dietary EA. It was concluded that high linoleic acid content in SFO may be the major contributing factor in alleviating the adverse response to EA.

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Section: Resultscontrasting

confidence: 84%

Section: Introductionsupporting

confidence: 51%

Effect of Dietary Erucic Acid on the Utilization of Oils or Fats by Growing Chicks

et al. 1985

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“…The possibility of adverse effects from this practice was also investigated with gums derived from both Tower oil and from Brassica napus (cv Midas) oil. Rapeseed gums are reported to be wellutilized by growing birds without adverse effect (Lall and Slinger, 1974;March, 1977).…”

Section: Introductionmentioning

confidence: 99%

Low Erucic Acid, Low Glucosinolate Rapeseed Meal, with and without Added Gums in the Layer Diet

1978

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White Leghorn pullets of two strains were fed 20% of Tower rapeseed meal in the laying diet for one year. The rapeseed meal was manufactured with and without addition of 2% of either Tower or Midas gums. Control birds were fed a soybean meal diet. Each diet was fed to 1018 birds of two commercial lines. Rate of production during a one-year period was similar on all diets. Gums were without effect on any aspect of production. Overall mortality in the experiment was 11.7%, or 6.5% when neoplasms were excluded. There was a strain difference in the rate of mortality which was not due to any single cause. The birds fed the rapeseed meal with Midas gums had the highest mortality. The incidence of haemorrhagic lesions in various tissues was significantly affected by diet, being lowest in the birds fed the soybean meal diet and highest in the birds fed the rapeseed meal with added Midas gums.

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“…Oro), we have observed deleterious effects on turkey poult performance when using such gums (Slinger, unpublished observation). These effects have preponderated any favorable increase in energy level due to synergism obtained with mixtures of rapeseed oil and gums(Lall and Slinger 1974). With gums derived from Tower rapeseed, therefore, addition to fats or oils provide alternative and potentially more advantageous methods of disposal.…”

mentioning

confidence: 99%

Performance of Laying Hens Fed Diets Containing Gums Derived From Tower Rapeseed

Leeson¹,

Summers²,

Slinger³

1977

Can. J. Anim. Sci.

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laying hens fed diets containing gums derived from Tower rapeseed. Can. J. Anim. Sci.57: 479-483. An experiment was conducted to investigate whether rapeseed gums have any detrimental effect on the performance of laying hens. White leghorn pullets of a commercial strain were fed all-mash diets in which the major source of protein was provided by either soybean meal, rapeseed meal, rapeseed meal * 1.57o fapeseed gums, soybean meal -t 1.5Vo rapeseed gums or soybean meal + 1.57, soybean gums. Each diet was offered to four replicate groups of l2 birds during ten 28-day experimental periods. Dietary treatment had no significant (P < 0.05) effect on feed intake or egg production. Birds fed diets containing rapeseed meal produced significantly (P < 0.01) smaller eggs than those birds receiving soybean meal with no added rapeseed gums. Eggshell quality as measured by shell deformation was significantly (P < 0.01) improved when birds were fed rapeseed meal * rapeseed gums or soybean meal * soybean gums, compared to those birds fed either rapeseed meal, or soybean meal with added rapeseed gums. Rapeseed gums had no significant (P < 0.05) effect on body weight or the incidence of liver hematoma. It is concluded that no deleterious effects accrue from feeding laying birds diets containing rapeseed meal to which has been added 1.57c gums, and that the addition of such gums provides rapeseed processors with a useful pollution-free method for their disposal.Les auteurs examinent l'effet des gommes de colza sur la production de poules pondeuses. IJne souche commerciale de poulettes White Leghorn a 6,t4, expos6e e plusieurs 169imes "tous pit6s", dans lesquels les prot6ines 6taient fournies essentiellement par le tourteau de soja, le tourteau de colza, le tourteau de colza plus l. 5 For personal use only.

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Effect of refining on the nutritional value of rapeseed oils for the chick and rat

Cited by 13 publications

References 14 publications

Effect of Dietary Erucic Acid on the Utilization of Oils or Fats by Growing Chicks

Effect of Dietary Erucic Acid on the Utilization of Oils or Fats by Growing Chicks

Low Erucic Acid, Low Glucosinolate Rapeseed Meal, with and without Added Gums in the Layer Diet

Performance of Laying Hens Fed Diets Containing Gums Derived From Tower Rapeseed

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