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Title: | Provision of desert cooler in shed of ewes during summer in hot semi-arid region |
Other Titles: | Not Available |
Authors: | Kalyan De, Shivendra Sharma, Pankaj Kumar Kumawat, Davendra Kumar, Arthabandhu Sahoo |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | Central Sheep & Wool Research Institute, Avikanagar |
Published/ Complete Date: | 2020-06-01 |
Project Code: | Not Available |
Keywords: | Cooler, heat stress, sheep, summer physiology, hot |
Publisher: | Elsevier |
Citation: | Not Available |
Series/Report no.: | Not Available; |
Abstract/Description: | In hot arid and semi-arid regions, heat stress is a major constraint in animal production due to prolongedsummers with high temperatures. In dairy husbandry, the desert cooler and evaporative cooling systemare effectively used to reduce heat stress. However, the effectiveness of desert coolers on sheep under thehot semi-arid region during summer is not explored. Therefore, the present study was carried out toassess the effect of the provision of the desert cooler in a shed of ewes during the summer in the hotsemi-arid region. For this purpose, 20 acyclic Malpura adult ewes having bodyweight 30.29 0.5 kg of 2-to 3-year-old were selected from the experimental animalflock. The ewes were equally divided into twogroups, namely G1 (control) and G2 (desert cooler). Ewes of both groups were kept in a roofed shed, withmud-floored and four sides covered with the chain-linked fence. The ewes of G2 were provided with adesert cooler from morning 09:00 h to evening 18:00 h. Ewes of both the groups were provided with anad libitumdiet consisting of 70% roughage (Cenchrus ciliarishay) and 30% concentrate feed. The mete-orological parameters were recorded daily in the morning and afternoon. The body weight and physi-ological response were recorded on a weekly basis. The blood sample was collected at weekly intervals toestimate blood biochemical and endocrine parameters. The data were analyzed using a general linearmodel. The maximum temperature, relative humidity, and temperature-humidity index in the afternoonwere significantly (P<0.01) lower in G2 shed where the desert cooler was used as compared to G1 shed.The respiration rate and skin temperature in the afternoon were significantly (P<0.05) lower in G2 ewesas compared to G1. The plasma glucose and triidothyronine levels were significantly (P<0.05) higher inG1 as compared to G2. Other blood biochemical, endocrine, and reproductive parameters did not vary (P>0.05) between the groups. The present study clearly established that the provision of the desert coolerin sheep sheds created a better microenvironment for sheep, leading to improved physiological re-sponses to heat stress as compared to sheep kept without desert cooler. However, the well-adaptednative adult sheep of the hot semi-arid region are well versed in combat heat stress in the naturalsummer of a hot semi-arid region.Ó2020 Elsevier Inc. All rights reserved.IntroductionThe semi-arid region is characterized by high ambient temper-ature and high incidence of solar radiation low humidity (De et al.,2017a,b). The hot semi-arid region is one of the major agro-ecological zones of tropics (Dias e Silva et al., 2016). In general, astrong relationship existed between agro-climatic conditions,population density, cropping system, and livestock production(Dias e Silva et al., 2016).In the arid and semi-arid region, most of the small ruminantpopulation thrives fairly well respite its harsh environment (Naqviet al., 2013) and especially sheep husbandry remained as a sus-tainable livelihood option for the people residing here since ancienttime. The reason behind thriving small ruminants in arid and smallruminants is the availability of rangeland, where the small andmarginal farmers follow a pastoral system of animal rearing in theavailable rangeland (De et al., 2019a). However, with the increasingdemand for meat, intensification of production is required. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Article |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Journal of Veterinary Behavior-Clinical Applications and Research |
NAAS Rating: | 7.94 |
Volume No.: | 37 |
Page Number: | 76-80 |
Name of the Division/Regional Station: | Animal Nutrition Division |
Source, DOI or any other URL: | https://doi.org/10.1016/j.jveb.2020.02.004 |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/41074 |
Appears in Collections: | AS-CSWRI-Publication |
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