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Open Access
Copyright: The authors. This article is an open access
article licensed under the terms of the Creative Commons Attribution License
(http://creativecommons.org/licenses/by/2.0) which permits unrestricted use,
distribution and reproduction in any medium, provided the work is properly
cited.
Original Research
7.
Effect of different housing systems on
triidothyronine (T3) and thyroxine (T4) in
chhotanagpuri ewes -
R K Verma, A K Ishwar, M P Sinha and A Bharti
Vet World. 2012; 5(2): 100-102
doi:
10.5455/vetworld.201 2.100-102
Abstract
The present study was conducted on 24 non-pregnant
parous chhotanagpuri ewes to see the effect of
different housing system on the level of
Triidothyronine (T3) and Thyroxine (T4) hormones.
Animals were randomly allocated to three groups,
one control and two treatment. Animals in Group I
were kept in hot humid condition where as Group II
was maintained in cold condition providing gunny
bags and fine sand on the floor. Control animals
(Group III) were kept in loose housing system
fodder and water were provided ad. libitum. to all
the three groups of animals. Level of T3 and T4
hormones were estimated during different stages of
gestation. Result of present study revealed that
the level of plasma Triidothyronine (T3) varied
significantly within the groups in all the groups
while it differed significantly (P<0.05) only at
day 135 of gestation between groups however, it
increased significantly on expected day of
parturition in all the three groups. The plasma
Thyroxine (T4) level varied significantly (P<0.05)
within and between groups at all the stages of
gestation. The plasma Thyroxine (T4) level
decreased significantly from day 0 to day 45 and
then started increasing up to day 135 of gestation
in all the groups. Further the, plasma Thyroxine
(T4) level decreased significantly (P<0.05) on
expected day of parturition and again increased
two days after parturition in all the groups but
it was non-significant. Different housing systems
did not had any effect on T3 and T4 hormone
levels, except at day 135 of gestation.
Keywords: Housing, Chhotanagpuri ewe, Plasma,
Gestation, Triidothyronine (T3), Thyroxine (T4),
RIA.
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