MEAT PRODUCTION PERFORMANCE OF CHICKEN F1 (RI X LUONG PHUONG) FEEDING TO NEW RECOMENDATION NUTRITION LEVELS, KEEPING AT HOUSEHOLD CONDITION

Abstract

This study was carried out closely to the actual production of households with nutritional levels recommended by Tran Thanh Van et al (2015) for chickens F1 (Ri × Luong Phuong) which provided more rationale scientific data and practical applications. The experiment was conducted from March to June 2016, in Thai Nguyen province. Totally 600 one-day old chicks were divided into three flocks, 200 chicks per flock regardless to their gender; kept on the covered floors with density of 7 chicks/m². The results showed that up to 84 days of age the cumulative survival rate were high, reaching 97%; body weight were 1531.10 grs/head; average day gain was 17.79 grs/head/day; Cummulative feed conversion ratio was 3.09 kg feed / kg weight gain; performance index (PI) was 55.77; economic number (EN) was 2.38; carcass rate, breast meat and leg meat respectively 77.64%, 38.20%; Abdominal fat percentage 1.46%; feed cost/kg weight gain was 23,475.22 VND; revenue share excluding direct costs was 20,052.95 VND/kg weight gain. It is necessary to use feed with nutritions: ME: 3000-3050-3100 kcal/kg; crude protein: 21-19-17%; lysine: 1.26-1.14-1.00%; methionine + cystine: 1.04-0.93-0.82% for the keeping chicken F1(Ri x Luong Phuong) at 1-21, 22-49 and 50-84 days of age respectively.