Reproductive Performance Of Sheep In Migratory And Non-Migratory Flocks In Southern Tamil Nadu
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Date
2014-09
Journal Title
Journal ISSN
Volume Title
Publisher
TANUVAS, Chennai
Abstract
A study was conducted to analyse the migratory sheep production
system in southern agro-climatic zone of Tamil Nadu. Reproductive
performance of the rams and ewes was recorded through the questionnaire
both in migratory and non-migratory flocks. Mean lambing percentage,
twinning percentage, livability at birth percentage, age at first mating (months)
in ewes, age at first mating (months) in rams, age at first lambing (months)
and weaning percentage in migratory and non-migratory flocks were 93.56
and 91.50; 1.87 and 1.52; 98.32 and 98.73; 12.34 and 13.22; 19.64 and 21.44;
18.54 and 19.68; 85.98 and 87.15, respectively. The weaning period for ram
and ewe lambs were 2.94+0.96 and 5.03+0.13 in migratory flocks and
4.82+0.13 and 6.06+0.17 in non-migratory flocks, respectively. Reproductive
performance of sheep in migratory flocks was significantly better than nonmigratory
flocks. The months of October, November and December were main
lambing season and the months of April and May were second lambing season.
Description
Keywords
Veterinary Science, Livestock Production and Management