نوع مقاله : مقالات علمی- پژوهشی
نویسندگان
1 گروه علوم دامی دانشکده کشاورزی دانشگاه بو علی سینا، همدان، ایران
2 دانشگاه فردوسی
3 دانشگاه فردوسی مشهد
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The aim of current study was to determine the effects of vitamin C on bone mineral density (in terms of osteoporosis),
eggshell quality and investigation of correlation between these factors in laying hens reared under normal condition. One
hundred and ninety two 24 - weeks - old laying hens diet was supplemented with 4 levels of vitamin C (0, 250, 500 and 750
mg/kg diet). The experimental design was completely randomized (CRD). Egg production, metatarsus bone mineral density
(BMD) index and correlation coefficient between BMD index and some eggshell characteristics were determined. Egg
weight, egg mass, hen-day egg production and eggshell quality (shell thickness, shell weight and shell percentage) were not
influenced by vitamin C (p>0.05). The BMD index of metatarsus also did not change by vitamin C utilization at 38-weeksold
(p>0.05). No significant correlation was found between BMD index and shell characteristics (p>0.05). However, positive
correlation was observed between BMD index and egg weight also between BMD index and hen-day egg production
(p
کلیدواژهها [English]
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