碩士 / 國立宜蘭大學 / 生物技術與動物科學系動物科學碩士班 / 107 / The ω3 polyunsaturated fatty acids (ω3 PUFA) are essential nutrients in poultry and human, and matter quality of feed or food. Thus, supplementation of fish oil (higher in PUFA) to layer diet is believed shall enrich such nutrients in eggs and benefit for consumers. The study was conducted to explore dietary supplemented with the two sources of oil on production performance, egg quality and yolk fatty acid profile in laying hens. A total of 384 Hy-Line 60-week-old laying hens was fed on floor with set nests. Experimental treatments were completely randomized design experiment. The factors were the 3.5% soybean oil or fish oil. The soybean oil was edible oil, and the fish oil was by-product of fish factory. There were 8 replicates of 2 dietary treatments. Production performance, egg quality, and fatty acid profile were measured every 4 weeks and lasted 12 weeks. Results showed that egg production rate was not affected by the oil sources, but the egg weight of fish oil when compared to soybean oil was significantly decreased 1.81g (P < 0.05). Fish oil tended to enhance the egg albumin height when it compared with soybean oil (P＝0.06), therefore improved the Haugh unit of eggs stored at room temperature for 10 days in the study period (P < 0.01). Fish oil enhanced the ratio of yolk EPA, DHA, and the total ω3 PUFA concentrations of fish oil was increased significantly in the whole period (P < 0.01). In conclusion, diet supplemented with 3.5% fish oil increased the ratio of EPA, DHA, and total ω3 fatty acid concentrations in the yolk, and enhanced the egg quality stored at room temperature for 10 days; however, might decreased the egg weight.
| Identifer | oai:union.ndltd.org:TW/107NIU00289014 |
| Date | January 2019 |
| Creators | Chiang, Chia-Yu, 姜家榆 |
| Contributors | Lee, Der-Nan, 李德南 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 25 |
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