ALLOMETRIC GROWTH PATTERNS OF BODY AND CARCASS COMPONENT IN DOCKED AND INTACT KARADI LAMBS
DOI:
https://doi.org/10.36103/ijas.v54i4.1810Keywords:
carcass tissue, fat depots, non-carcass component, growth, Karadi.Abstract
To study the allometric growth of body and carcass traits, twelve new born Karadi lambs were docked within 3 days of their birth using rubber-rings, and left with their mothers till weaning (2.5 months). Another 12 weaned Karadi lambs obtained from local market were left intact. Following an adaptation period of a week, the docked and intact lambs with an average initial weight of 16.83±1.522 and 19.92± 0.748kg, respectively were randomly divided into three equal groups to be slaughtered at 20, 30 and 40kg. Results revealed that the allometric growth coefficients of both docked and intact lambs of dissectible lean and bone were negative heterogenic (b<1), indicating an early maturing tissues, while the growth of dissectible fat is a late maturing tissues. In both groups, loin, shoulder, foreshank and rack are an early maturing cuts, neck is isogonic, while leg in intact lambs is an early maturing whereas in docked lambs grew at a similar rate to carcass. In docked and intact lambs, carcass fat relative to empty body weight is an early and late maturing tissues, whereas non-carcass fat is isogonic and grew at a similar rate to empty body weight in both groups. The growth of pelt, liver, lung and trachea and heart were isogonic and grew at a similar rate to empty body weight in both groups
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