O. Pimpa, B. Khamseekhiew, B. Pimpa
Faculty of Science and Industrial Technology, Prince of Songkla University, Surat thani, 84100, Thailand.
Abstract: This experiment was conducted to study protein requirements for maintenance and growth of Southern indigenous cattle. Feeding trial was conducted. Sixteen indigenous male cattle initial average body weight of 134.2 ± 30.52 kg with about 2 years old were given a difference levels of protein in feed at 7.3, 8.3, 10.3 and 12.5% with the same amount of energy intake (219.2± 4.59 kcal/kgW0.75 /day) for 90 days. The dietary intakes of DM and GE were not significantly different (p>0.05). The nitrogen intake was significantly different (p<0.01) ranged from 1.05 to 1.86 g N/kg W0.75/day. The average dairy gain (ADG) was significantly (p<0.01) increased with an increase level of protein, ADG were 393.06, 497.50, 756.94 and 791.03 g/d in animal given 7.3, 8.3, 10.3 and 12.5% CP, respectively. The relationship between the N intake and ADG was: N intake = 0.356 ADG + 3.263 (R2 = 0.662). The protein requirement for maintenance and growth rate at 1 g /kgW0.75/day of growing male indigenous cattle was 0.522 g N/kg W0.75/day (3.26 g CP/kg W0.75/day) and 0.0569 g N/ kg W0.75/day (0.356 g CP/kg W0.75/day), respectively. Increasing protein intake to 65% (from 7.3 to 12.5% CP) was efficient in term of feed conversion rate (FCR) and body weight gain (p<0.01).
Keywords: Thai southern indigenous cattle, Protein requirement.
Pages: 155 – 160 | Full PDF Paper