Growth, Carcass Quality and Cardiopathology of Boars and Gilts Fed Diets Containing Rapeseed and Soybean Oils

Friend, D. W.; Gilka, F.; Corner, A. H.

doi:10.4141/cjas75-071

Cited by 16 publications

(8 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be noted, however, that other strains of rat, namely Chester Beatty (17,20) and Wistar (18), showed only a low incidence and/or severity of heart lesions which was not increased with the intake of LEAR oils. Similar results were observed with mice (18), pigs (21)(22)(23)(24)(25), monkeys (26,27), ducks (28), and chicken (29) fed LEAR oils.…”

Section: Discussionsupporting

confidence: 79%

Cardiopathogenicity of soybean oil and tower rapessed oil triglycerides when fed to male rats

Kramer¹,

Hulan²,

Corner³

et al. 1979

Lipids

Self Cite

View full text Add to dashboard Cite

The triglycerides of soybean oil were purified by molecular distillation and those of Tower rapeseed oil by molecular distillation and adsorption chromatography. The original oils and the purified triglycerides were incorporated in semisynthetic diets at 20% by weight and fed for 16 weeks to weanling male Sprague-Dawley rats to compare the nutritional and pathological effects of the oils and their triglyceride fractions on rats. The study was carried out at two independent laboratories. No significant differences were observed between the results of the two establishments. The incidence of myocardial lesions was significantly higher in rats fed Tower rapeseed oil than in those fed soybean oil. Purification of the triglycerides by molecular distillation and adsorption chromatography appeared to have no major effect on the incidence of myocardial lesions. This supports our previous findings that the cardiopathogenicity appeared to have no major effect on the incidence of myocardial lesions. This supports our previous findings that the cardiopathogenicity of the test oils to rats resides in the triglycerides of these oils.

show abstract

Section: Discussionsupporting

confidence: 79%

Cardiopathogenicity of soybean oil and tower rapessed oil triglycerides when fed to male rats

Kramer¹,

Hulan²,

Corner³

et al. 1979

Lipids

Self Cite

View full text Add to dashboard Cite

show abstract

“…A chi-square (12) approximation (Fienberg 1970) was used to determine the significance of differences, in the incidence and severity of cardiac lesions, between pigs fed the test diets. When a diet containing 20Vo high (23.4Ea) erucic acid rapeseed oil was fed to boars for a 112-day period in a previous experiment (Friend et al 1975b), there was a significant (P < 0.05) reduction in growth rate, compared with the controls and pigs fed a 20Vo soybean oil diet. In the present experiment, however, observed growth rate by boars fed the control and the rapeseed oil diets for 168 days tended to be lower than that for the corn oil diet, but the gains did not differ significantly (Table 2).…”

Section: Growth and Cardiopathology In Boars Fed Rapeseed Oilmentioning

confidence: 92%

“…All pigs had been erysipelas vaccinated and were allocated to dietary treatments when 10-13 wk of age (15-38 kg bodyweight). There were four diets comprising a com-soybean-starch type control diet (Friend et al 1975b) to which oil was not added, and the control diet with 2O7o com oil, 20Vo LEAR oil (mixture of Brassica napus cv. Midas and cv.…”

Section: Growth and Cardiopathology In Boars Fed Rapeseed Oilmentioning

confidence: 99%

Growth and Cardiopathology in Boars Fed Rapeseed Oil

Friend¹,

Kramer²,

Corner³

1976

Can. J. Anim. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Although feed intakes by boars were significantly lower when fed diets containing rapeseed oil (no significant difference between diets supplemented with LEAR and HEAR oils, with erucic acid content 1 and 24 mol% of total fatty acids, respectively) compared to the control, but the authors (Friend et al., ) speculated that this was due to a higher consumption of the lower energy control diet to satisfy a common energy requirement. An earlier study by the same authors reported that exposure to 2.2 g erucic acid/kg bw per day resulted in a significant reduction in feed intake, average daily gain and feed efficiency (Friend et al., ). However, this contrasts with reports that exposures to 2.5 g erucic acid/kg bw per day had no adverse effect on feed intake or live weight gain (Aherne et al., ).…”

Section: Assessmentmentioning

confidence: 99%

“…Friend et al. () fed growing and fattening boars and gilts on diets supplemented with soybean oil or three rapeseed oils with varying levels (1.6%, 4.3% and 22.3%) of erucic acid. The oils were included at either 5% or 10% of the diet.…”

Section: Assessmentmentioning

confidence: 99%

Erucic acid in feed and food

Knutsen¹,

Alexander²,

Barregård³

et al. 2016

EFS2

View full text Add to dashboard Cite

Erucic acid is the trivial name of the fatty acid cis-13-docosenoic acid and occurs at high concentrations mainly in the seeds of species of the Brassicaceae (e.g. rape seed or mustard seed). The European Commission requested EFSA to deliver a scientific opinion on the risks for animal and human health related to the presence of erucic acid in feed and food. For most humans, the main contributor to dietary exposure to erucic acid was the food group 'Fine bakery wares'. In 'Infants', 'Food for infants and small children' was the main contributor to exposure. The heart is the principal target organ for toxic effects after exposure. Myocardial lipidosis was identified as the critical effect for chronic exposure to erucic acid. This effect is reversible and transient during prolonged exposure. A tolerable daily intake (TDI) of 7 mg/kg body weight (bw) per day for erucic acid was established, based on a no observed adverse effect level of 0.7 g/kg bw per day for lipidosis in young rats and newborn piglets. Mean chronic exposure of the different groups of the population did not exceed the TDI. The two highest 95th percentile dietary exposure levels were observed for infants (ranging from 1.7 to 7.4 mg/kg bw per day, minimum lower bound (LB) -maximum upper bound (UB)) and other children (ranging from 2.1 to 9.5 mg/kg bw per day, minimum LB -maximum UB), the last max UB estimate being above the TDI. This may indicate a risk for young individuals with high erucic acid exposure. In pigs, levels of erucic acid are unlikely to represent a health concern. However, for poultry, the small margin between the lowest observed adverse effect level (LOAEL) and the estimated exposure may indicate a health risk where maximum inclusion rates are applied. Due to the absence of adequate data, the risk for ruminants, horses, fish and rabbits could not be assessed.

show abstract

Growth, Carcass Quality and Cardiopathology of Boars and Gilts Fed Diets Containing Rapeseed and Soybean Oils

Cited by 16 publications

References 8 publications

Cardiopathogenicity of soybean oil and tower rapessed oil triglycerides when fed to male rats

Cardiopathogenicity of soybean oil and tower rapessed oil triglycerides when fed to male rats

Growth and Cardiopathology in Boars Fed Rapeseed Oil

Erucic acid in feed and food

Contact Info

Product

Resources

About