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.: Home > Animal Science Papers and Reports > 2012 > Volume 30 Number 4 > Kamila Puppel*, Teresa Nałęcz-Tarwacka, Beata Kuczyńska, Marcin Gołębiewski, Henryk Grodzki

Influence of combined supplementation of cows’ diet with linseed and fish oil on the thrombogenic and atherogenic indicators of milk fat

Kamila Puppel*, Teresa Nałęcz-Tarwacka, Beata Kuczyńska, Marcin Gołębiewski, Henryk Grodzki
Cattle Breeding Division , Department of Animal Science, Warsaw University of Life Sciences, Ciszewskiego 8, 02-786 Warsaw, Poland
Abstract :
The study was conducted on Polish Holstein Black-and-White cows. From a herd of about 300
animals maintained in a free-stall dairy shed, two groups of 10 were selected by the analogue
method: primiparous (P) and second-lactation cows (SL), taking into consideration the stage
of lactation (90±30 days) and daily milk yield (35.42±2,6 kg). During the first 7 days (that were
considered the initial period – CTL) all the cows were fed the same TMR (
total mixed ration
) diet.
From day 8 to 28 (considered the true experimental period – FOL) at the same time of the day each
cow from both groups received individually 150 g fish oil and 250 g linseed oil. Milk samples were
taken individually from each cow three times: on the last day of CTL and on day 14 and day 28 of
FOL. As a result of supplementation with FOL, a decrease in the SFA content of milk was observed
– for P from 62.610 to 56.70 and for SL from 63.50 to 53.67 g/100g of fat. The milk from P cows after
21 days of supplementation was characterized by a higher level of total CLA (P
0.01), FFA (P
0.01), SCFA (P
0.01) as well as atherogenic (AI), thrombogenic (TI) indices (P
0.01) and
lover level of PUFA n-3 (P
0.01), PUFA n-6 (P
0.01), LCFA (P
0.01) and MCFA (P
0.01) compared
to SL cows. In conclusion, introducing FOL to TMR diets for cows can improve the nutritive value
of milk. Differences in the concentration of these milk components between the experimental groups
indicate that it is significantly affected by the age of cows.
Keywords :
ows / fatty acid / fish oil / linseed / milk

Date Deposited : 01 Apr 2015 15:58

Last Modified : 01 Apr 2015 15:58

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Volume 30, Number 4, - 2012

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