Feeding experiments. A criterion for quality estimation of biologically and conventionally produced foods

Plochberger, Karin

doi:10.1016/0167-8809(89)90102-3

Cited by 22 publications

(12 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Des poules identiques génétiquement, mais élevées selon des conditions différentes produisent des oeufs de caractéristiques différentes (tableau 2). Les oeufs de poules ayant reçu une alimentation biologique ont une teneur protéique plus faible et une teneur en lécithine plus élevée que les oeufs de poules ayant reçu un aliment conventionnel (Plochberger 1989). On observe généralement une plus forte teneur en caroténoïdes des oeufs produits par des poules élevées au sol avec accès à un parcours extérieur, comparées aux poules en cage ou au sol mais sans parcours extérieur, qui s'explique par la consommation d'herbe et de plantes vertes sur le parcours extérieur par les premières, ce qui constitue un apport supplémentaire en caroténoïdes (Woese et al 1997).…”

Section: / Qualités Nutritionnelles Et Organoleptiquesunclassified

“…Cependant, Hansson et al (2000) ont quant Tableau 2. Poids des oeufs et composition en albumen, vitellus et coquille (Plochberger 1989).…”

Section: / Qualités Nutritionnelles Et Organoleptiquesunclassified

“…Deux études ont montré que les animaux consomment de plus grandes quantités d'aliment biologique, lorsqu'ils ont le choix, quel que soit leur précédent régime alimentaire (Plochberger 1989, Plochberger et Velimirov 1992 figures 6 et 7). Ceci n'est pas la preuve que la nourriture biologique est plus saine que la nourriture conventionnelle, mais c'est une observation intéressante, qui pourrait éventuellement trouver une application dans l'utilisation de ces animaux pour la réalisation de tests alimentaires.…”

Section: / La Préférence Alimentaire Des Animaux Pour Les Aliments Biunclassified

See 2 more Smart Citations

Quality of organic animal products

Kouba

2003

Livestock Production Science

115

View full text Add to dashboard Cite

Section: / Qualités Nutritionnelles Et Organoleptiquesunclassified

“…Cependant, Hansson et al (2000) ont quant Tableau 2. Poids des oeufs et composition en albumen, vitellus et coquille (Plochberger 1989).…”

Section: / Qualités Nutritionnelles Et Organoleptiquesunclassified

Section: / La Préférence Alimentaire Des Animaux Pour Les Aliments Biunclassified

See 1 more Smart Citation

Quality of organic animal products

Kouba

2003

Livestock Production Science

115

View full text Add to dashboard Cite

“…Furthermore, the findings from some data provide conflicting conclusions (Wolfson and Shearer, 1981;Warman and Havard, 1997). The question whether chemical analyses sufficiently define food quality has given rise to a series of studies based on holistic methods, e.g., determination of electrochemical parameters, animal feeding experiments and food preference tests (Plochberger, 1989;Plochberger and Velmirov, 1992;Johnson and Collier, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Investigations concerning essential and/or dangerous contents using laboratory rats are based on these characteristics (Fromentin and Nicolaidis, 1996;Koehnle et al, 2003), which has proven efficient (Benett and Henderson, 1972). Some food preference tests with various bread, common beets, beet roots, carrots, apples, and wheat have shown that rats were able to discriminate between organic and conventional products (Plochberger, 1989;Plochberger and Velmirov, 1992;Mäder et al, 1993). However, in these studies, preference tests were carried out with single food items, and according to our knowledge, no studies are available in which complete diets based on similar distribution of food items of different cultivation systems have been compared in preference tests with rats.…”

Section: Introductionmentioning

confidence: 99%

Dependent on dietary treatments of mothers, rats showed individual preference of diets containing ingredients produced with different cultivation strategies

Yong

Halekoh²,

Jørgensen³

et al. 2005

J. Anim. Feed Sci.

View full text Add to dashboard Cite

Three diets were prepared with ingredients cultivated by each of three different farming systems, low input of fertilizer without pesticides (LIminusP), low input of fertilizer and high input of pesticides (LIplusP), and high input of fertilizer and high input of pesticides (HIplusP). A preference test was conducted to investigate whether rats could distinguish among the three iso-energetic and iso-nitrogeneous diets, and the influence of the mothers' diet was accordingly studied with regard to the food choice of the progeny. The experimental diets contained potatoes, carrots, peas, green kales, apples, and rapeseed oil and were formulated to meet the NRC requirements for growing rats. Rats were weaned from dams, which had been fed one of the experimental diets. For five days, rats (n=27) had free access to each of the three diets, and consumption of each of the diets was recorded daily. Thereafter, rats were offered a standard laboratory chow until the test was repeated. The results indicated that the majority of the rats showed individual preference for the diets and behaved similarly on different experimental days (ρ = 0.63 in repetition 1 and ρ = 0.73 in repetition 2) and in the two repetitions (τ = 0.79). There was a significant interaction between diet choice and mothers' diet (P=0.04 in repetition 1 and P=0.05 in repetition 2): when mothers' diet was LIminusP, the LIminusP was among the preferred diets. However, when the mothers were fed LIplusP or HIplusP, the rats showed the lowest consumption of LIminusP.KEY WORDS: preference test, diet choice, organic food, conventional food, rats * Supported by the Danish Research Centre for Organic Farming and Food Systems (DARCOF) through the project: Organic food and health -a multigeneration animal experiment 3

show abstract

A Comparison of Organically and Conventionally Grown Foods—Results of a Review of the Relevant Literature

Woese

Lange

Boess

et al. 1997

J. Sci. Food Agric.

507

412

View full text Add to dashboard Cite

This review is concerned with the summary and evaluation of the results from more than 150 investigations comparing the quality of conventionally and organically produced food or of foods produced with the aid of di †erent fertilisation systems. Cereals, potatoes, vegetables, fruits, wine, beer, bread, cakes and pastries, milk, meat, eggs and honey, as well as products made from them, have been included in the review. Most of the studies evaluated are physicochemical investigations of concentrations of desirable and undesirable ingredients, pesticide residues, contaminants, sensory analyses and feed experiments with animals. Nutritional studies in humans and experiments which used holistic methods of analysis are also included. Since di †erent methods of sampling were used in the investigations, a summary evaluation of individual results is extremely difficult. Even when the sampling methods are of the same type, a great many factors have to be taken into consideration which are not directly related to the production system but which do inÑuence food quality to a large degree. Despite the heterogeneity of the sample material, some di †erences in quality between products from conventional and organic farming or foods produced with the aid of di †erent fertilisation systems have been identiÐed.

show abstract

Feeding experiments. A criterion for quality estimation of biologically and conventionally produced foods

Cited by 22 publications

References 2 publications

Quality of organic animal products

Quality of organic animal products

Dependent on dietary treatments of mothers, rats showed individual preference of diets containing ingredients produced with different cultivation strategies

A Comparison of Organically and Conventionally Grown Foods—Results of a Review of the Relevant Literature

Contact Info

Product

Resources

About