OIE ad hoc Group Animal Welfare and Laying Hen Production Systems – Chapter 7.Z – November 2017
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This study was conducted to determine the ability of different molt diets to induce molt in 95-wk-old hens. The hens were randomly assigned to 4 treatments of 60 birds each: 1) molted by full feeding with broken rice (BROK), 2) corn (CRN), 3) cassava (CASS), or 4) nonmolted control (CONT) for 14 d. At 15 …
A 6-week study was conducted to investigate the effects of phytase and hydro alcoholic extract of Withania somnifera root (WS) …
Egg-laying strains of chickens are highly susceptible to osteoporosis, a non infectious disease characterized by a decrease in structural bone as hensage. To minimize the onset of osteoporosis, it was hypothesized that a delay in sexual maturity may allow a pullet to develop a stronger skeletal frame before egglaying, leading to improved skeletal mineralization atend …
The aim of this trial was to determinethe effect of aerial perches on keel bone injuries andtibia bone characteristics in free-range laying hens. The relationship between keel bone injuries and individual bird parameters, such as weight, girth, wing:girth ratio,feather coverage, and tibia bone characteristics, was also assessed. Five commercial free-range houses, each containing between 7,000 …
Laying hens have a unique bone turnover due to the daily egg laying cycle. Laying hens have three distinctive kinds …
The maintenance of bone strength has been an important issue in the debate over cage use for laying hens. Bone …