Assessment of surface temperatures of buffalo bulls (Bubalus bubalis) raised under tropical conditions using infrared thermography

被引：37

作者：

Barros, D. V. ^{[1
]}

Silva, L. K. X. ^{[1
]}

Kahwage, P. R. ^{[1
]}

Lourenco Junior, J. B. ^{[1
]}

Sousa, J. S. ^{[1
]}

Silva, A. G. M. ^{[1
]}

Franco, I. M. ^{[1
]}

Martorano, L. G. ^{[2
]}

Garcia, A. R. ^{[3
]}

机构：

[1] Fed Univ Para, BR-66059 Belem, Para, Brazil

[2] Embrapa Amazonia Oriental, Belem, Para, Brazil

[3] Embrapa Pecuaria Sudeste, Sao Carlos, SP, Brazil

来源：

ARQUIVO BRASILEIRO DE MEDICINA VETERINARIA E ZOOTECNIA | 2016年 / 68卷 / 02期

关键词：

animal welfare; water buffalo; infrared imaging; core temperature; body surface temperature; DAIRY-CATTLE; BEEF BULLS; SYSTEMS; YOUNG; RAM;

D O I：

10.1590/1678-4162-8327

中图分类号：

S85 [动物医学（兽医学）];

学科分类号：

0906 ;

摘要：

This paper aimed to evaluate the surface temperatures of buffalo bulls using infrared thermography, considering four distinct anatomical parts over time, and to correlate surface temperatures and thermal comfort indexes. The humid tropical climate (Koppen's Afi) was predominant in the research station where the experiment was performed and the trial lasted from April to August. Ten bulls (n=10) were evaluated every 25 days (morning: 6:00-9:00; afternoon: 12:00-15:00) and the parameters assessed were respiratory rate (RR), rectal temperature (RT), and the thermograms of surface temperature for orbital area (ORB), right flank (RF), left flank (LF) and scrotum (SCR). Climatological data was continuously monitored and the Temperature and Humidity Index (THI) and the Index of Comfort of Benezra (ICB) were calculated. The average values of THI were >= 78, and significant differences between shifts were observed (P<0.05). The ICB ranged from 1.96 to 2.25 and significant differences were observed for shifts and throughout the months (P<0.05). The averages of surface temperatures were RT=38.2 +/- 0.5 degrees C, ORB=36.1 +/- 0.8 degrees C, LF=33.5 +/- 2.5 degrees C, RF=35.4 +/- 1.7 degrees C and SCR=33.3 +/- 1.1 degrees C, which exhibited significant differences for shifts and throughout the months (P<0.05). Positive correlations were obtained between THI and ORB (0.72), RF (0.77), LF (0.75) and SCR (0.41) (P<0.0001). The maximum temperature of ORB showed the highest correlation with RT (0.58, P<0.0001). Therefore, the surface temperatures are subject to climatic variations and increase throughout the day, due to the variation in thermal comfort indexes, and the maximum ORB temperature was the parameter most related to rectal temperature. Lastly, the results indicate that IRT may be a useful non-invasive and accurate tool to detect the variations in ORB, LF, RF and SCR temperature in buffalo bulls.

引用

页码：422 / 430

页数：9

共 26 条

[1] Koppen's climate classification map for Brazil [J].