Özet:

Limousine and Simmental cattle (Bos taurus) are well known as the best beef cattle in Indonesia. This research was carried out to select the best Limousine and Simmental candidate bulls based on preweaning growth curve of body weight. Hence, four growth cuve models of Gompertz, Logistic, Richards and Morgan-Mercer-Flodin (MMF) were used in this study. Total of 13 bulls (7 Limousine and 6 Simmental) reared at Bureau of Embryo Transfer (BET) of Cipelang, Indonesia were used in this study. Research showed that the average of weaning weight (8 months of age) in Limousine and Simmental calfs were 155.17±20.88 kg and 146.50±22.04 kg respectively. The growth curve of G model in both breeds had lower of standard error (SE) value. Hence, the growth curve of Gompertz can be selected as the standard for preweaning growth in Bos taurus cattle at research site. In addition, calf ID: 811107 (Limousine) and calf ID: 61199 (Simmental) were selected as the best candidate bull because of highest on preweaning growth. It was concluded that the preweaning growth curve of Gompertz can be used as the standard of preweaning growth for Bos taurus cattle at BET Cipelang.

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