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http://dx.doi.org/10.5536/KJPS.2021.48.3.143

Effects of Light Intensity on the Growth Performance, Blood Parameter and Immune Status of Broiler Chicks  

Kim, Hee-Jin (Poultry Research Institute, National Institute of Animal Science)
Son, Jiseon (Poultry Research Institute, National Institute of Animal Science)
Jeon, Jin-Joo (Poultry Research Institute, National Institute of Animal Science)
Kim, Hyun-Soo (Poultry Research Institute, National Institute of Animal Science)
You, Are-Sun (Poultry Research Institute, National Institute of Animal Science)
Kang, Hwan-Ku (Poultry Research Institute, National Institute of Animal Science)
Kang, Bo-Seok (Poultry Research Institute, National Institute of Animal Science)
Hong, Eui-Chul (Poultry Research Institute, National Institute of Animal Science)
Publication Information
Korean Journal of Poultry Science / v.48, no.3, 2021 , pp. 143-150 More about this Journal
Abstract
In this study, we investigated the effects of light intensity on broiler chick growth performance, blood parameters, and stress levels. A total of 240 one-day-old male Ross 308 broilers (47.97±0.166 g) were subjected to three different intensities of light (20, 30, and 50 lx), with each treatment being conducted with four replicates. On the seventh day, the growth performance (body weight, feed conversion ratio, and breast muscle and liver weights) and blood parameters were determined; the levels of serum corticosterone, interleukin-6 (IL-6), and tumor necrosis factor-α were also evaluated. The body weight, weight gain, liver weight, and breast muscle weight of chicks exposed to a light intensity of 50 lx were significantly increased compared with those of chicks subjected to 20 lx (P<0.05). No significant differences were observed in the leukocyte, erythrocyte, and platelet counts and the biochemical profile exceptions being the levels of glucose and inorganic phosphorus in the blood of the chicks in the three light intensity groups. However, serum corticosterone and IL-6 levels were the highest in chicks exposed to a light intensity of 20 lx (P<0.05). In conclusion, the findings of this study indicate that broiler chicks exposed to higher light intensity (50 lx) show significant improvements in terms of weight gain and corticosterone and IL-6 levels. Thus, high light intensities enhanced the growth performance, stress levels, and immune status of broiler chicks.
Keywords
broiler; chick; light density; animal welfare; growth;
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