SHORT COMMUNICATION
The effect of feeding regular or low α-linolenic acid
linseed on laying performance and total cholesterol
content in eggs
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1
Agricultural University of Cracow, Department of Animal Nutrition,
Al. Mickiewicza 24/28, 30-059 Kraków, Poland
2
The Kielanowski Institute of Animal Physiology and Nutrition,
Polish Academy of Sciences,
05-110 Jabłonna, Poland
Publication date: 2006-09-21
Corresponding author
R. Augustyn
Agricultural University of Cracow, Department of Animal Nutrition,
Al. Mickiewicza 24/28, 30-059 Kraków, Poland
J. Anim. Feed Sci. 2006;15(Suppl. 1):103-106
KEYWORDS
ABSTRACT
The study was conducted on 90 Isa Brown hens aged 28 weeks, randomly allocated to 6 groups
of 15 birds each and maintained in individual laying cages throughout 12 weeks of the experiment.
Hens of control group were fed a standard diet containing 19 g crude fat per kg, diets for the
experimental groups contained 38 g crude fat per kg due to enrichment of the formula with 50 g of
regular linseed cv. Opal or Omega (HA), low α-linolenic linseed cv. Linola (LA), 20 g of LA linseed
oil, or 20 g of soyabean oil. The increase in the dietary fat content in experimental groups decreased
feed intake by 5% (P < 0.05), increased egg production by 4% (P < 0.05) except in the group with LA
oil, and decreased egg weight by 2% on average (P < 0.05), in comparison with the control group.
The total cholesterol content averaged 284 mg per egg in groups fed LA linseed or soyabean oil
and in the control group, while in the groups fed LA linseed and LA oil, it averaged 291 mg per egg
(P < 0.05). In conclusion, linseed cultivars with a high content of linoleic acid cannot be considered
useful in production of functional eggs.
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