Effects of Different Stocking Densities on Performance, Feather Score and Serum Immune and Biochemical Indicators of Quail

SUN Qingyu; YANG Haiming; XIAO Yuhang; MIAO Yajun

doi:10.3969/j.issn.1006-267x.2020.05.028

2020 , Vol. 32 >Issue 5: 2192 - 2197

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.05.028

POULTRY NUTRITION AND FEED

Effects of Different Stocking Densities on Performance, Feather Score and Serum Immune and Biochemical Indicators of Quail

SUN Qingyu ,
YANG Haiming ,
XIAO Yuhang ,
MIAO Yajun

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1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
2. Zhangjiagang Ruihe Planting and Breeding Cooperatives, Zhangjiagang 215600, China

Received date: 2019-11-08

Online published: 2020-05-15

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Abstract

The purpose of this experiment was to study the effects of different stocking densities on performance, feather score and serum immune and biochemical indicators of quail. A total of 1 380 healthy 36-week-old Korean quails were selected and randomly divided into 4 groups with 6 replicates (cages) in each group. The quail rearing numbers of groups A, B, C and D were 65, 60, 55 and 50 in each cage, the area of each replicate (cage) was 0.734 5 m², and rearing numbers convert into stocking densities were 89, 82, 75 and 68 birds/m², respectively. The pre-experimental period lasted for 3 days, and the experimental period lasted for 28 days. The results showed as follows:1) the laying rate of groups B, C and D was significantly higher than that of group A (P<0.01), and group B had the highest laying rate. There was no significant difference in average egg weight among all groups (P>0.05), and there were no significant differences in feather score and body weight among all groups at the beginning and ending of the experiment (P>0.05). 2) The serum total protein content of groups B, C and D was significantly higher than that of group A (P<0.01), and group B had the highest serum total protein content. The serum globulin content of groups B and C was significantly higher than that of group A (P<0.05), and the serum globulin content of group D was significantly higher than that of group A (P<0.01). There was no significant difference in serum complement 3 content among all groups (P>0.05). 3) The serum calcium content of groups B and C was significantly higher than that of group A (P<0.05), and group B had the highest serum calcium content. There were no significant differences in the phosphorus content and alkaline phosphatase activity in serum among all groups (P>0.05). In summary, it can be concluded that different stocking densities have effects on laying rate and serum immune and biochemical indicators of quail. Therefore, the suitable rearing number of quail is 60 in each cage, and the stocking density of quail is 81 birds/m².

Key words： quail; stocking density; performance; immune indicators; biochemical indicators

Cite this article

SUN Qingyu , YANG Haiming , XIAO Yuhang , MIAO Yajun . Effects of Different Stocking Densities on Performance, Feather Score and Serum Immune and Biochemical Indicators of Quail[J]. Chinese Journal of Animal Nutrition, 2020 , 32(5) : 2192 -2197 . DOI: 10.3969/j.issn.1006-267x.2020.05.028

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