Prediksi Bobot dan Konformasi Karkas Kambing Lokal Mengunakan Prediktor Bobot Potong dengan Berbagai Model Regresi
ABSTRACT: The goat population
of Indonesia is concentrated in Central Java province especially under
smallholder farming areas, and mostly their function is the production of meat.
Local breed (Jawa Randu and Peranakan Etawah Crossbred) are very common raised
by samallholders in Banyumas areas. The local kids are raised with their
mothers and slaughtered after post weaning (6–8 months old). Carcass
characteristics are important criteria for consumers and it could be taking
into account. The objective of this study was to estimate the carcass weight
and conformation of local goat by predictor of slaughter weight using some
regression models. Eighty male of local goats (Peranakan Etawah and Jawa Randu
crossbred), body weight ranged from 10-23.5 kg (6-8 months of age) resulted
from village production system were used in this study. Carcass weight,
dressing percentage, and carcass conformation were recorded. Ten models of
estimation curve procedure were applied in terms of linear and nonlinear
regression models. The analysis display relation between slaughter weight (X)
and carcass weight and conformation (Y). The higher of determination
coefficient (r2) and the lowest of the standard error means (M.SE) was found in
the power regression model. Carcass weight of local goat (Y) could be
effectively assessed by slaughter weight (X) using power regression model Y=
0.593907 (X 0,893021 ) or ln (Y) = ln (0.593907) + 0,893021 ln(X); and
conformation carcass (Y) could be effectively predicted by slaughter weight (X)
using power regression model Y= 14.995466 (X 0,267867 ) or ln (Y) = ln
(14.995466) + 0,267867 ln (X).
Keywords: goat; carcass
weight; carcass conformation; regression model
Penulis: Akhmad Sodiq
Kode Jurnal: jppeternakandd110041
