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Effect of multiple environmental stressors on the adaptive capability of Malpura rams based on physiological responses in a semi-arid tropical environment

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Title Effect of multiple environmental stressors on the adaptive capability of Malpura rams based on physiological responses in a semi-arid tropical environment
Not Available
 
Creator Sejian V
Kumar D
Gaughan JB
Naqvi SMK
 
Subject adaptation
cortisol
heat stress
Malpura ram
multiple stress
nutritional stress
respiration
sheep walking stress
 
Description Not Available
A 45-day study was conducted where the primary objective was to evaluate the effect of simultaneously
imposed multiple stressors (thermal, nutritional, and walking) on the adaptive capability of Malpura
rams based on changes in ingestive behavior, physiological, blood biochemical, and endocrine responses.
Twenty adult Malpura rams (average body weight 44.9 kg) were used in the study. The rams were
divided into 2 groups, CON (n ¼ 10; control) and multiple stressors (MS; n ¼ 10; multiple stressors). All of
the rams were stall fed with a diet consisting of 70% roughage and 30% concentrate. The CON rams were
maintained in a shed under ambient conditions with ad libitum feeding without walking, whereas MS
rams were subjected to multiple stressors (thermal, nutritional, and walking). The feed intake (P < 0.01)
was lower and water intake (P < 0.01) was higher in MS compared to CON rams. Among the physiological
measurements, respiration rate afternoon (P < 0.01), pulse rate morning (P < 0.01), rectal temperature
afternoon (P < 0.01), skin temperature afternoon (P < 0.05), and both morning and afternoon scrotum
temperature (P < 0.01) increased significantly in MS rams. Both hemoglobin (P < 0.05), packed cell
volume (P < 0.01), increased and plasma glucose (P < 0.01) reduced significantly (P < 0.01) in MS as
compared to CON rams. Among the endocrine parameters, the plasma cortisol increased and plasma
thyroxin reduced significantly (P < 0.05) in MS rams. The study indicates that Malpura rams have the
capability to adjust their physio-biochemical and endocrine responses to cope with multiple stressors in
a hot semi-arid environment. Furthermore, the study also indicated that respiration rate, rectal temperature, scrotal temperature, hemoglobin, packed cell volume, and cortisol may act as ideal biological
markers for quantifying the impact of multiple stressors in Malpura rams.
ICAR
 
Date 2018-11-24T11:10:46Z
2018-11-24T11:10:46Z
2016-11-10
 
Type Research Paper
 
Identifier Sejian V, Kumar D, Gaughan JB and Naqvi SMK. 2016. Effect of multiple environmental stressors on the adaptive capability of Malpura rams based on physiological responses in a semi-arid tropical environment. Journal of Veterinary Behavior Clinical Applications and Research, 17:6-13.
1558-7878
http://krishi.icar.gov.in/jspui/handle/123456789/13164
 
Language English
 
Relation Not Available;
 
Publisher Elsevier