Year 2022, Volume 7, Issue 2
| Year : | 2022 |
| Volume : | 7 |
| Issue : | 2 |
| Authors : | Aiga NOLBERGA-TRŪPA, Aija MĀLNIECE, Rolands NEIMANIS |
| Title : | RESEARCH ON LAYING HEN CROSS DOMINANT BIOLOGICAL EGG COMMERCIAL PRODUCTION USING VARIOUS TYPES OF FEED |
| Abstract : | The demand for ecologically-friendly food produce, including those of animal nature, e.g. hen eggs, is increasing continuously in Latvia as well as all across the world. Research objective is to determine the most productive and most suitable for Latvian environment laying hen crosses that can be kept for bio-egg commercial production, as well as to decide upon most suitable biologically produced and economically efficient feed for these hen crosses. The research was held in Kandava municipality, Kandava rural territory, “Kurzemes olas” Ltd. laying hen farmstead “Upkalnu ferma”. The research involved three Dominant laying hen crosses: Dominant Barred D 959, Dominant Tinted D 723 and Dominant Red Barred D 459. All in all, there were 6 groups, each of them consisting of 100 birds. One group of each hen cross was fed with manufactured complete bio-feed (group numbers D723K, D459K and D959K), while the second group – with home-made bio-feed designed for laying hens (group numbers D723S, D459S and D959S). The maximum results that were reached during the entire research period were as follows: D723K – 71% in September (26-29 weeks old), D723S – 82% October (30-34 weeks old), D459K – 56% November (35-38 weeks old), D459S – 58% October (30-34 weeks old), D959K – 54% November (35-38 weeks old) and D959S – 62% October (30-34 weeks old). The best productivity indicators on average were demonstrated by laying hen cross D723 (p<0.05). The cross D459S produced eggs with higher average weight and better proteins, correspondinly by 3.81 g and 11.15 Haugh units than D459K. The amount of dry matter, crude protein and fat in egg mass was equivalent and met physiological norm indications. Reproductive tract organs in all groups but D459K were developed evenly. Liver mass in all groups showed no visible pathologies. |
| For citation : | Nolberga-Trūpa, A., Mālniece, A., Neimanis, R. (2022). Research on laying hen cross dominant biological egg commercial production using various types of feed. AGROFOR International Journal, Volume 7. Issue No. 2. pp. 102-109. DOI: 10.7251/AGRENG2202102N |
| Keywords : | Laying hen, egg production, egg quality, reproductive tract, liver mass. |
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ISSN 2490-3434 (Printed)
ISSN 2490-3442 (Online)
ISSN 2490-3442 (Online)
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