ORIGINAL PAPER
Dependent on dietary treatments of mothers, rats
showed individual preference of diets containing
ingredients produced with different cultivation
strategies
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1
Department of Animal Health, Welfare and Nutrition, Danish Institute of Agricultural Sciences, Research Centre Foulum,
P.O. Box 50, 8830 Tjele, Denmark
2
Present address: National Feed Engineering Technology Research Center, China Agricultural
University, No. 2 Yuanmingyuan West Road, Haidian, Beijing 100094, P. R. China
3
Department of Genetics and Biotechnology, Danish Institute of Agricultural Sciences, Research Centre Foulum,
P.O. Box 50, 8830 Tjele, Denmark
Publication date: 2005-10-17
Corresponding author
C. Lauridsen
Department of Animal Health, Welfare and Nutrition, Danish Institute of Agricultural Sciences, Research Centre Foulum,
P.O. Box 50, 8830 Tjele, Denmark
J. Anim. Feed Sci. 2005;14(4):715-726
KEYWORDS
ABSTRACT
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.
CITATIONS (1):
1.
Feeding trials in organic food quality and health research
Alberta Velimirov, Machteld Huber, Charlotte Lauridsen, Ewa RembiaÅkowska, Kathrin Seidel, Susanne Bügel
Journal of the Science of Food and Agriculture