Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.

Copyright © Wydawnictwo Akademii Rolniczej we Wroclawiu, ISSN 1505-0297

Szulc T. , Szurko J. , Wajda S. , Zielak-Steciwko A. , Newlacil I. , Demkowicz M. 2010. EFFICIENCY OF DRIED DISTILLERS GRAIN WITH SOLUBLES (DDGS) FEEDING IN YOUNG POLISH HOLSTEIN – FRIESIAN BULLS, EJPAU 13(1), #04.
Available Online: http://www.ejpau.media.pl/volume13/issue1/abs-04.html

ABSTRACT

Two stage experimental fattening was conducted on 64 young Polish
Holstein-Friesian bulls of black and white type. Trial group was fed with concentrate
containing 23.5% of corn dried distillers grain with solubles (DDGS) from 250
to 400-420 kg body weight, and 13.5% DDGS in finishing stage up to 570 kg body
weight. The effect of extracted rapeseed meal replacing with corn DDGS on performance,
carcass characteristics and fatty acid profile of intramuscular fat in muscullus
longissimus dorsi was determined. Dried distillers grain with solubles supplementation
caused significant (228 g) increase of average daily gain (ADG) in the first
stage of experiment. Feed conversion rate (FCR, gain: feed) in trial group was
0.036 kg higher in the first, and 0.007 kg lower in the second stage of experiment
comparing to the control group. Improved ADG and FCR in the first stage involved
the 22 days decrease of experimental fattening period. Carcass dissection results
and prime cuts percentage did not differ between trial and control group in none
of fattening periods. Introduction of corn dried distiller grain with solubles
into feed concentrate indicated an improvement of fatty acid composition, including
increased level of C18:2 fatty acid in intramuscular fat.

Key words: young bulls, fattening, DDGS, slaughter value, dissection, fatty acids.

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Tadeusz Szulc
Institute of Animal Breeding,
Wrocław University of Environmental and Life Sciences, Poland
Chełmońskiego 38C, 51-630 Wrocław, Poland
phone: 71 320 57 62
email: tadeusz.szulc@up.wroc.pl

Jarosław Szurko
Pol-Lean Sp. z o. o., Łosice, Poland
Łosice, 55–095 Mirków, Poland
phone: 71 315 43 17
email: j.szurko@pol-lean.pl

Stanisław Wajda
Department of Commodity Science and Animal Raw Material Proce, University of Warmia and Mazury in Olsztyn, Poland
Oczapowskiego 5, 10-719 Olsztyn–Kortowo, Poland
phone: 0 89 523 32 26
email: ewabur@uwm.edu.pl

Anna Zielak-Steciwko
Institute of Animal Breeding,
Wrocław University of Environmental and Life Sciences, Poland
Chełmońskiego 38D, 51-630 Wrocław, Poland
phone: 71 320 57 73
email: anna.zielak@up.wroc.pl

Irmina Newlacil
Institute of Animal Breeding,
Wrocław University of Environmental and Life Sciences, Poland
Chełmońskiego 38C, 51-630 Wrocław, Poland
phone: 71 320 57 67
email: irmina.newlacil@gmail.com

Monika Demkowicz
Institute of Animal Breeding,
Wrocław University of Environmental and Life Sciences, Poland
Chełmońskiego 38C, 51-630 Wrocław, Poland
phone: 71 320 57 67
email: demkowicz.monika@gmail.com

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Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.

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