Hempseed increases gamma-tocopherol in egg yolks and the breaking strength of tibias in laying hens

SKŘIVAN, Miloš, ENGLMAIEROVÁ, Michaela, VÍT, Tomáš a SKŘIVANOVÁ, Eva. Hempseed increases gamma-tocopherol in egg yolks and the breaking strength of tibias in laying hens. PLoS One, 2019, roč. 14(5), s. Article Number: e0217509. ISSN 1932-6203.
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The effect of hempseed in the diet of laying hens was evaluated at 0, 30, 60 and 90 g/kg concentrations. The aim of the study was to determine the effect of dietary treatment on the performance of hens, the physical characteristics of egg quality, the concentrations of alpha- and gamma-tocopherol and the carotenoid and cholesterol contents of egg yolks, together with the breaking strength of tibial measurements. In light of the obtained results, our study aimed to address the optimal dietary level of hempseed in laying hen diets. Lohmann Brown hens (n = 240) were divided into 4 dietary treatment groups (6 cages per treatment) with 10 hens per cage. The experiment lasted for 12 weeks. The level of nutrients in all diets (wheat-corn) was well balanced. The dietary metabolisable energy was adjusted using rapeseed oil. The addition of 30 g/kg of hempseed to the diet significantly increased (P

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