Dietary calcium levels regulate calcium transporter gene expression levels in the small intestine of broiler chickens

1. This study investigated the effect of dietary calcium (Ca) levels on growth performance, bone development and Ca transporter gene expression levels in the small intestine of broiler chickens. 2. On the day of hatch, 350, Ross 308 male broilers were randomly allotted to one of five treatments with...

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Bibliographic Details
Published in:British poultry science 2022-03, Vol.63 (2), p.202-210
Main Authors: Han, J. C., Wang, X. N., Wu, L. H., Lv, X. L., He, L., Qu, H. X., Shi, C. X., Zhang, L., Wang, Z. X.
Format: Article
Language:English
Subjects:
Animal Feed - analysis
Animals
bone
CaBP-D28k
Calcium - metabolism
Calcium, Dietary - metabolism
Chickens - physiology
Diet - veterinary
Dietary Supplements
Gene Expression
Growth
Intestine, Small
Male
NCX1
Phosphorus, Dietary - metabolism
PMCAlb
VDR
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Summary:1. This study investigated the effect of dietary calcium (Ca) levels on growth performance, bone development and Ca transporter gene expression levels in the small intestine of broiler chickens. 2. On the day of hatch, 350, Ross 308 male broilers were randomly allotted to one of five treatments with five replicate pens each and 14 birds per pen. Dietary Ca levels in feed were 5.0, 7.0, 9.0, 11.0 and 13.0 g/kg, in which 9.0 g/kg was in the control diet. All diets contained 4.5 g/kg non-phytate phosphorus (NPP). 3. The increase in dietary Ca levels from 5.0 to 13.0 g/kg did not affect the growth performance of 1- to 18-day-old broilers (P > 0.05). 4. Increasing the Ca levels linearly increased the ash weight and the contents of ash, Ca and phosphorus (P) in the tibia of broilers at 18 days of age (P 
ISSN:0007-1668
1466-1799
DOI:10.1080/00071668.2021.1949697