Different Calcium Supplementation Modes Affect Production Performance, Tibia Quality and Serum Biochemical Indices of Laying Hens

KONG Luxin; ZANG Sumin; LIU Peipei; LI Zeru

doi:10.3969/j.issn.1006-267x.2016.04.029

2016 , Vol. 28 >Issue 4: 1186 - 1192

DOI: https://doi.org/10.3969/j.issn.1006-267x.2016.04.029

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Different Calcium Supplementation Modes Affect Production Performance, Tibia Quality and Serum Biochemical Indices of Laying Hens

KONG Luxin ,
ZANG Sumin ,
LIU Peipei ,
LI Zeru

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College of Animal Science and Technology, Agricultural University of Hebei, Baoding 071000, China

Received date: 2015-11-10

Online published: 2016-04-11

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Abstract

This study was conducted to investigate the effects of different calcium supplementation modes on production performance, tibia quality and serum biochemical indices of laying hens, with an aim to determine the optimal supplementation mode and amount of calcium in production. Four hundred and eighty 18-week-old Hy-Line Gray commercial layers were divided into 4 groups with 4 replicates each and 30 hens in each replicate. The calcium was supplemented at 18 weeks of age and when the laying rate was 5%, 50% and 90%, respectively. The calcium supplementation modes were:2.00%, 2.20%, 2.40% and 3.75% for group Ⅰ; 2.00%, 2.50%, 3.00% and 3.75% for group Ⅱ; 2.00%, 3.00%, 3.75% and 3.75% for group Ⅲ; 2.00%, 3.75%, 3.75% and 3.75% for group Ⅳ. The experiment lasted for 9 weeks. The results showed as follows:1) the laying rate of hens in group Ⅲ was significantly higher than that in group Ⅰ and group Ⅳ(P<0.05). No significant differences were observed in average daily egg weight among all groups(P>0.05). 2) The tibia strength, weight and calcium content in group Ⅲ were significantly higher than those in group Ⅰ and group Ⅱ(P<0.05), while were not significantly different compared with group Ⅳ(P>0.05). 3) Serum calcium content in group Ⅰ and group Ⅱ was significantly higher than that in group Ⅲ and group Ⅳ when the laying rate was 50%(P<0.05). And serum calcium content in group Ⅳ was significantly higher than that in group Ⅰ and group Ⅱ(P<0.05), but not significantly different compared with group Ⅲ(P>0.05) when laying rate was 90%. In conclusion, the 3.00%, 3.75% and 3.75% calcium supplementation level when the laying rate was 5%, 50% and 90% can improve laying rate and tibia quality of laying hens, and avoid calcium waste.

Key words： calcium; laying hens; production performance; tibia quality; serum biochemical indices

Cite this article

KONG Luxin , ZANG Sumin , LIU Peipei , LI Zeru . Different Calcium Supplementation Modes Affect Production Performance, Tibia Quality and Serum Biochemical Indices of Laying Hens[J]. Chinese Journal of Animal Nutrition, 2016 , 28(4) : 1186 -1192 . DOI: 10.3969/j.issn.1006-267x.2016.04.029

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