Keywords

Microalgae, Flaxseed, Production Performance, Egg Quality, Dha, Omega-3 Polyunsaturated Fatty Acids, Deposition Rules

Abstract

This experiment aims to compare the effects of adding microalgae and flaxseed to the diet on the production performance, egg quality, egg yolk fatty acid composition and egg yolk ¦Ø-3 polyunsaturated fatty acid (PUFA) deposition patterns of laying hens. A total of 216 37-week-old Roman laying hens with similar egg production rate and body shape were selected and randomly divided into 3 groups, with 6 replicates in each group and 12 birds in each replicate. The control group was fed a corn-soybean meal basal diet, and the two experimental groups were fed a basal diet supplemented with 8% microalgae (microalgae group) and 8% flaxseed (flaxseed group). The trial period is 4 weeks. The results showed that: 1) Compared with the control group, there was no significant difference in egg production rate, average daily feed intake, average egg weight and feed-to-egg ratio between the microalgae group and the flaxseed group (P>0.05). 2) Compared with the control group, there were no significant differences in egg weight, egg yolk weight, egg yolk ratio, protein weight, protein ratio, protein height and Hastings units between the microalgae group and the flaxseed group (P>0.05); but the storage time Extended treatment can significantly reduce Hastelloy units and protein height (P<0.01), and the degree of reduction in the microalgae group and flaxseed group is higher than that in the control group; the egg yolk color score in the microalgae group is extremely significantly higher than that in the control group and flaxseed group ( P<0.01). 3) Compared with the control group, the ¦Ø-3PUFA content of egg yolks in the microalgae group and flaxseed group was significantly increased (P<0.01), and the ¦Ø-6PUFA content and ¦Ø-6/¦Ø-3 were significantly reduced (P<0.01). . 4) The contents of docosahexaenoic acid (DHA) and ¦Ø-3PUFA in the egg yolks of the microalgae group and flaxseed group were both enriched and saturated on the 13th day, and then showed a slowly decreasing trend. It can be seen that adding microalgae and flaxseed to the diet can produce eggs rich in ¦Ø-3PUFA. The optimal time is after the 13th day, and has no adverse effects on the production performance and egg quality of laying hens, but it is rich in ¦Ø-3PUFA. Eggs are difficult to store.   For further details regarding this article and its research, please do not hesitate to contact our team for assistance. Original research done by 10.3969/j.issn.1006-267x.2015.10.026  

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