Effects of on Production Performance, Bone Physiological Property, and Hematology Indexes in Laying Hens.

This study was to investigate the effects of on production performance and bone pathophysiological characteristics of layers. Twenty-four 48-week-old Lohmann Pink-shell laying hens were randomly divided into two groups: a basic diet (control) and the basic diet mixed with (0.5 g/kg) for a 60-day trial. Statistically, independent-sample -test was used to assess the treatment differences. The results showed that supplementation improved the percent of marketable eggs ( < 0.05) with reduced numbers of broken and soft-shelled eggs but had no effects on egg weight, height of albumen, yolk color, and Haugh unit ( > 0.05). supplement also elevated maximum load ( = 0.06), maximum stress ( = 0.01), stiffness ( < 0.01), and Young's modulus ( < 0.01) but suppressed maximum strain ( = 0.06) in the femur. In addition, compared with control birds, phosphorous concentration ( < 0.01) was reduced in serum at day 61 but increased in the femur ( < 0.05) in fed birds. fed birds also had lower magnesium concentrations in both femur ( = 0.04) and feces ( = 0.09). Furthermore, increased plasma estrogen concentration ( = 0.01) and femur TNF receptor superfamily member 11b () expression ( < 0.05) but reduced plasma IL-1 ( < 0.01) and TNF-α ( < 0.01) concentrations. These results indicate that could be used as a health promotor to reduce overproduction-induced inflammation and associated bone damage and to increase marketable egg production. The data provide evidence for developing a management strategy to use as a feed additive to improve marketable egg production and health and welfare status of laying hens.