Utilization efficiency of rapeseed and linseed oil cakes in layer hen feed mixtures
2004
Vitina, I.I. (Latvia Univ. of Agriculture, Sigulda (Latvia). Research Centre Sigra) | Nudiens, J. (Latvia Univ. of Agriculture, Sigulda (Latvia). Research Centre Sigra)
The aim of the investigation was to evaluate hen productivity and egg quality by feeding a feed mixture to them where soybean solvent cakes are completely replaced by local rapeseed and linseed oilcake. The investigation was carried out with Lohmann Brown cross layers (three groups). The feed mixture containing 12% of soybean solvent cake was fed out to the 1st group of layers (control). Soybean solvent cake was replaced by rapeseed and linseed oilcake in the feed mixture for the 2nd and 3rd group layers feed mixture. As a result, expenses of feed mixtures for layers of the 2nd and the 3rd group were by 5.00-9.00 Ls per ton lower than those of the layers of the control group. Practically laying intensity (91.54-93.19%) and average egg weight (59.11-60.40 g) were observed in all groups during the recording period. Feed expenses for production of 1 kg egg mass were by 4.30-4.69% lower at present time ingredient prices and by using rapeseed and linseed oil cake in comparison with soybean solvent cake used in feed mixtures. Content of rapeseed and linseed oil cake supplemented fat including composition of fatty acids in layer feed mixture and in the egg yolk. Namely, the content of omega-3 (n-3) fatty acids increased by 1.20-1.43%. The amount of rapeseed and linseed oil cake used in the trial for layer feed mixtures improved the quality of the egg yolk fatty acids and did not influence laying hen and egg weight.
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