The Effects of Different Low Temperature Cold Stimulation on IgG and IFN-γ of China-Lindian Native Chickens

Abstract

In this study, we identified the influence of cold stimuli on welfare of China-Lindian Native Chickens (CLNC) through detecting immune welfare indexes. The main immunel welfare index of detection were the levels of immunoglobulin G (IgG) and interferon-γ (IFN-γ). Randomly selected 3-week-old 448 birds were given the low temperature stimulation test from 22 age in days to 42 age in days. They were conducted on the interval days, decrease of temperature and stimulation time.It was concluded from the study that the interval days of cold stimuli had great effect on the levels of IFN-γ (P0.05); the decrease of temperature of cold stimuli had no impact on the level of IFN-γ and IgG (P>0.05); and the time of cold stimuli had no impact on the level of IFN-γ(P>0.05), while had great effect on IgG (P<0.05) in immune welfare aspect.