Effects of far infrared ray illumination on the performance, blood biochemistry, and faecal microflora of laying hens at different production stages

被引:1
作者
Lim, C. I. [1 ]
Kim, H. W. [1 ]
You, A. S. [1 ]
Heo, K. N. [1 ]
Choo, H. J. [1 ]
机构
[1] RDA, Poultry Res Inst, Natl Inst Anim Sci, Pyeongchang 25342, South Korea
关键词
biochemical profile; far infrared ray; faecal microflora; laying hens; performance; EGG-PRODUCTION; QUALITY;
D O I
10.4314/sajas.v53i1.08
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
This study investigated the effect of far-infrared ray (FIR) illumination on performance, blood biochemistry, and faecal microflora of laying hens at different production stages. A total of 360 Hy-line brown laying hens were randomly allocated in a 2 x 2 factorial arrangement with six replicates. Hens were distributed in two production stages (30-39 and 45-54 weeks-old). Each group was exposed to two light types (light emitting diode; LED and LED+FIR) in separate rooms. The LED treatment illuminated a wavelength of 650 +/- 10 nm (0.65 +/- 0.01 mu m), while LED+FIR treatment emitted 15 +/- 10 mu m with an LED wavelength. The results showed an interaction between egg production stages and light types on the serum triglyceride concentration. The hens exposed to the LED+FIR and LED treatments showed similar egg production, feed intake, egg weight, feed conversion ratio (FCR), as well as albumen height, haugh unit, and shell thickness of eggs. LED+FIR substantially decreased the concentration of serum cholesterol (CHOL), HDL cholesterol (HDLC), and triglyceride (TG) compared to LED lighting. LED+FIR substantially reduced the number of total microbes, Escherichia coli, and Salmonella in faeces compared to birds exposed to LED light. These findings suggest that LED+FIR lights may improve hen health and the hen house environment.
引用
收藏
页码:75 / 81
页数:7
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