PENGARUH KETINGGIAN TEMPAT DAN SISTEM PEMELIHARAAN TERHADAP KORELASI GENETIK BOBOT LAHIR DENGAN BOBOT DEWASA SAPI BALI

Franky M.S. Telupere

Abstract


A research has been done to estimate the genetic correlation between birth weight and parental body weight of bali cattle with survey method by procedures observation, measurements, and interviews in highland (Kabupaten Timor Tengah Selatan) and lowland (Kabupaten Kupang) at difference care system (semi intensive and extensive). Four hundred eighty bali cattle were use in this research. The results showed that no significance differences (P>0.05) on sire and dam body weight based on altitudes, care system, and interaction between altitudes and care system. However, the birth weight had significant differences (P<0.05) whereas in highland at semi intensive care system the value was better than extensive system. Estimation of the phenotype correlation between birth weight and parental body weight at semi intensive care system showed a high positive value whether in highland or in lowland for all estimation components. While for extensive care system, the estimation based on sire component produced a negative value. The phenotype correlation values based on dam component was better than sire or sire-dam components. The genetik correlation values for semi intensive care system showed a positive value, on the other hand a negative value was found in extensive care system.


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