Identification of Reproductive Activity of Donggala Cattle at Post Puberty and Post Partum Periods

The aim of the study is to investigate condition and reproductive activity of Donggala cattles during post-puberty and post-partom periods. The study was carried out for 12 months at Donggala, Palu and Sigi Districts where major populations of Donggala cattles were kept by farmers. A total of 200 heads of Donggala cattles belonged to the local farmers were sampled. The animals were categorized as heifers when they were 10 – 18 months old and cows at 18 – 24 months old. Data colected inthis study were from structured interview and direct observation. Variables measured were body condition score, live body weight, age of puberty, age of first estrus and first mating, days open, service per conception rate, non return rate and conception rate either during post puberty or post partum. Data found in this study were describe descriptively. The results of the study indicated that the age of puberty was late as live body weight body condition score of Donggala were low. First mating of Donngala heifers was much dependant upon live body weight. Heavier cattles tended to mat earlier than the lighter cattles. Heavier catlles had better service per conception rate, non return rate and conception rate either at post puberty or post partum periods. In conclusion, the cows with high body weight had earlier first estrus, first mating and better service per conception rate, non return rate and conception rate than those cows with low live body weight. Keywords: Donggala cattle, reproductive efficiency, post puberty, post partum DOI: 10.7176/JBAH/9-6-05 Publication date:March 31st 201

PENGARUH JENIS KELAMIN TERHADAP PRODUKSI KARKAS SAPI POTONG DI SULAWESI TENGA

The objective of this research is to study and determine the extent of the influence of breed and sex on carcass percentage and edible non-carcass of beef in Central Sulawesi. This experiment was an analytical descriptive with survey method. Primary data collected in this experiment were taken from the respondents as a key person. Data collection technique was a direct recording method on the activities occurred at the abattoir. Data recorded were breed, sex, live weight and weight of animal product after slaughtering (weight and carcass percentage). Recording of number and breed of cattle was done for a week at the abattoir in Sigi, Parigi Moutong, Poso, Banggai and Toli – Toli regencies. Data recorded from 100 cattle was statistically analyzed with T – Test. The results of study indicated that carcass percentage of bull (47.68%) was significantly lower than the carcass percentage of those heifers (49.437%). Key words : Beef cattle, sex and carcass percentage