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Reducing Vitamin B2 supplements for laying hens is possible in organic systems (Relacs Practice Abstract)

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{Tool} Reducing Vitamin B2 supplements for laying hens is possible in organic systems (Relacs Practice Abstract). Creator(s): Leiber, Florian; Holinger, Mirjam and Ayrle, Hannah. Issuing Organisation(s): FiBL - Research Institute of Organic Agriculture. Relacs Practice Abstract, no. 02. (2020)

[img] Microsoft Word - English (Reducing Vitamin B2 supplements for laying hens is possible in organic systems)
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Online at: https://orgprints.org/38027/

Summary

- Laying performance (always close to 100%), body weight development and health and welfare indicators did not differ between the three feeding treatments.
- Egg quality parameters (weight, stability of the eggshell and colour of the yolk) were also not affected by the reduc-tion of vitamin B2 supplements.
- However, the vitamin B2 concentrations in the egg yolks and livers of the 1.5mg/kg-treatment group declined by week 7 compared to the other two treatments.
- Subsequently, the values remained stable until the end of the experiment in week 18.
- We therefore conclude that despite the declining vitamin B2 concentrations in the yolks and livers of the hens sup-plemented with only 1.5 mg/kg feed, this level was sufficient with regard to animal health, welfare and performance.
- The results for the 3 mg/kg-treatment were always equal those of the 4.5mg/kg supplement treatment.
- Therefore, we consider it safe to reduce the amount of vitamin B2 supplements in layers’ feed to 3 mg/kg in organic feeding conditions.


EPrint Type:Practice tool
What problem does the tool address?:Vitamin B2 (Riboflavin) from GMO-free sources is needed in organic poultry feeding. Recently, a serious delivery gap for this vitamin oc-curred, which shows the necessity to develop new ways of produc-ing GMO-free Vitamin B2.
What solution does the tool offer?:Part of the solution would be to decrease the recommended levels of B2 supplements added to animal feed to reduce feed production costs and dependency on external sources.
Country:Switzerland
Type of Practice Tool:Practice abstracts
Keywords:feeding, vitamins, poultry, layer chickens, feed safety, riboflavin
Agrovoc keywords:
LanguageValueURI
Englishvitaminshttp://aims.fao.org/aos/agrovoc/c_8274
Englishpoultryhttp://aims.fao.org/aos/agrovoc/c_6145
Englishfeedinghttp://aims.fao.org/aos/agrovoc/c_2838
Englishriboflavinhttp://aims.fao.org/aos/agrovoc/c_6593
Englishfeed safetyhttp://aims.fao.org/aos/agrovoc/c_1410352829602
Englishlayer chickenshttp://aims.fao.org/aos/agrovoc/c_12109
Subjects: Animal husbandry > Feeding and growth
Animal husbandry > Production systems > Poultry
Research affiliation: European Union > Horizon 2020 > RELACS
Switzerland > FiBL - Research Institute of Organic Agriculture Switzerland > Animal Health
H2020 or FP7 Grant Agreement Number:773431
Related Links:https://orgprints.org/38027/, https://organic-farmknowledge.org/tool/38027
Project ID:oknet
Deposited By: Forschungsinstitut für biologischen Landbau, FiBL
ID Code:38027
Deposited On:18 May 2020 10:17
Last Modified:26 May 2020 08:45
Document Language:English
Status:Published

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