Laying hen egg production and quality
Riasi et al. (2008) reported that the use of Turmeric in the diet of layers up to 2 g/kg had
no adverse effect on egg quality. Radwan et al. (2008) reported that egg production,
weight and mass increased significantly in laying hens fed Turmeric at the level of 0.5%
in the basal diet, while yolk weight and yolk index were significantly higher in the group
fed with 1.0% Turmeric in the feed. Sawale et al. (2009) recorded increased egg
production in laying hens treated with a herb-derived mineral toxin binder production
containing Curcuma longa. Radwan et al. (2008) suggested that Curcuma longa may
improve the environment in the uterus (specifically the site of calcium deposition) and
consequently increase shell weight and thickness. Moorthy et al. (2009) found no
significant effect of feeding 0.1% Curcuma longa on hen house egg production and
percent hen day egg production of Single Comb White Leghorn layers. Riasi et al. (2008)
reported that feeding different levels (0.0, 0.5, 1.0, 1.5 and 2.0 g/kg of feed) of Turmeric
to the laying hens had no significant effect on speci fic gravity, egg shell thickness, egg
shell weight and eggs shell weight to egg weight ratio.