高温环境下湖羊直肠温度和血液生化指标的监测

doi:10.16431/j.cnki.1671-7236.2018.01.035

Abstract

Abstract:

The continuously changes of rectal temperature and blood biochemical indexes were monitored in 10 d in Hu sheep (a southern special sheep breed) exposed to high ambient temperature. Changes of rectal temperature and blood biochemical indexes were analyzed statistically, based on these data, sensitive individuals and resistant individuals were separated in Hu sheep under high temperature. The results showed that the highest rectal temperature of Hu sheep appeared at the highest ambient temperature (11:00-15:00), the lowest rectal temperature generally appeared at about 03:00 and the rectal temperature was circulated in 24 h cycles. The mean difference between the highest temperature and the lowest temperature was significant (P<0.05).After heat stress, the lymphocyte (LYM), red blood cell (RBC), hemoglobin (HGB), and mean hemoglobin (MCHC) were above the normal values for sheep, which were influenced by both sex and age. Basophilic cell (BAS),RBC,HGB, hematocrit (HCT) of ewes were higher than those of rams, but the differences were not significant (P>0.05). The LYM (P>0.05), BAS count (P<0.01) and percentage (P<0.05) of one year old Hu sheep were higher than those of half a year old. Mainly based on changes of rectal temperature and blood biochemical indexes, high temperature stress sensitive sheep and resistance individuals were identified in Hu sheep, and high temperature stress sensitive individuals counted 35.3%, high temperature stress resistant individuals counted 26.5%.Creatine kinase (CK) content was significantly different between sensitive individuals and resistant individuals (P<0.05). In conclusion, the rectal temperature of Hu sheep was significant difference under high environment temperature, and ewes and one year old sheep were sensitive to heat, these results would provide a basis for better to study the principles and molecular mechanism of heat stress in sheep.

Key words: Hu sheep; high temperature; rectal temperature; blood biochemical index; monitoring

CLC Number:

S826

LI Yinxia, WANG Huili, DENG Wei, ZHANG Li, ZHANG Jun, QIAN Yong, MENG Chunhua, CAO Shaoxian. Monitoring of Rectal Temperature and Blood Indexes of Hu Sheep under High Ambient Temperature[J]. , 2018, 45(1): 271-277.

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Monitoring of Rectal Temperature and Blood Indexes of Hu Sheep under High Ambient Temperature

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