Ayo J O, Oladele S B, Ngam S, Fayomi A, Afolayan S B
Faculty of Veterinary Medicine, Ahmadu Bello University, Zaria, Nigeria.
Res Vet Sci. 1999 Feb;66(1):7-9. doi: 10.1053/rvsc.1998.0231.
Experiments were performed on 11 adult Red Sokoto goats (RSG) with the aim of determining their diurnal temperature fluctuations during the harmattan season. The rectal temperatures (RT) of goats were recorded with a standard clinical thermometer every hour from 06:00 to 19:00 hours. The RT of goats rose gradually from its minimum value of 38.3+/-0.1 degrees C at 06:00 hours and attained its peak value of 39.2+/-0.1 degrees C at 18:00 hours (P < 0.001). Thus, the RT values rose concurrently with increase in ambient temperature. The overall mean RT obtained was 38.7+/-0.1 degrees C. The diurnal fluctuation in the RT of the goats was 1.9+/-0.1 degrees C. There was a highly significant correlation between time of day and RT values (r = 0.947, P < 0.001). The results indicate a diurnal rhythm in the RT of the RSG, which agree with the established pattern of fluctuations in the RT of other breeds of goats. The high diurnal range of 1.9+/-0.1 degrees C confirms that the harmattan season is thermally stressful to the RSG.
对11只成年红索科托山羊（RSG）进行了实验，目的是确定它们在旱季的昼夜体温波动情况。从06:00至19:00每小时用标准临床温度计记录山羊的直肠温度（RT）。山羊的直肠温度从06:00的最低值38.3±0.1摄氏度逐渐上升，在18:00达到峰值39.2±0.1摄氏度（P<0.001）。因此，直肠温度值随环境温度升高而同时上升。获得的总体平均直肠温度为38.7±0.1摄氏度。山羊直肠温度的昼夜波动为1.9±0.1摄氏度。一天中的时间与直肠温度值之间存在高度显著的相关性（r = 0.947，P<0.001）。结果表明红索科托山羊的直肠温度存在昼夜节律，这与其他品种山羊直肠温度既定的波动模式一致。1.9±0.1摄氏度的高昼夜温差证实旱季对红索科托山羊有热应激。
