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Krmiva : Review for animal feeding, production and feed technology, Vol. 50 No. 6, 2008.

Original scientific paper

RAPE SEED OIL-CAKE IN LAYERS NUTRITION

Zlatko Janječić ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Stjepan Mužic ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Jasna Pintar ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Dalibor Bedeković ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Neven Voća ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska
Nikola Šnajder ; Agronomski fakultet Sveučilišta u Zagrebu, Zagreb, Hrvatska

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Abstract

Rape seed oil-cake, as the main by-product in the production of oil has represented a great challenge to all researches and nutritionists for years related to its use in the feeding process of laying hens. The main goal of this research was to establish the influence of 8 % (PN-8) and 16 % (PN-16) rape seed oil-cake of domestic cultivar Bristol in feed mixture on the production quality of laying hens. While conducting the experiment, 90 Croatian hens were used, in the period of 24 to 32 weeks of egg production. Hens were sorted out in to 30 cages, 3 of them in each cage. The diet of respective hens with 8 and 16 % rape seed oil-cake had no negative (p>0.05) influence on the average egg mass and average egg production. The highest mortality (10%) was recorded in hens in group PN-16, which contributing significantly (p<0.05) to the lower total number of laid
eggs during the experiment. In group PN-16 the highest consumption of feed mixture per kilo of egg mass and on average per one egg was
recorded. The eggs of group PN-16 had a slightly higher value with
respect to shell hardness, height of albumen, colour of egg yolk, and
Haugh unit. Still, respective differences were not significant (p>0.05).
Average marks for smell, taste, colour and general of eggs in the group of hens fed rape seed oil-cake of 16 % were lower compared to other treatments. Taking into consideration the above mentioned, it can be concluded that rape seed oil-cake of domestic cultivar Bristol can be recommended to be used in the portion of 8 % in feed mixture for laying hens.

Keywords

rape seed oil-cake; feeding process; laying hens

Hrčak ID:

32735

URI

https://hrcak.srce.hr/32735

Publication date:

18.2.2009.

Article data in other languages: croatian

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