Growth characteristics of pullets from two-way crossbreeding between Choi and Luong Phuong chickens
Từ Trung Kien
, Tu Quang Hien
, Tu Quang Trung
Abstract: The purpose of the project was to evaluate the growth characteristics of pullets from two-way crossbreeding between ♂ Choi x ♀ Luong Phuong and ♂ Luong Phuong x ♀ Choi chickens. The experiment included 4 treatments (T), namely Treatment 1 (T1): pure Luong Phuong pullets, T2: pure Choi pullets, T3: Hybrid pullets of (♂ Choi x ♀ Luong Phuong), and T4: Hybrid pullets of (♂ Luong Phuong x ♀ Choi). Each treatment consisted of 100 one-day-old female chicks, repeated five times; the experiment concluded when the pullets were 140 days old. T1 and T2 were set up to compare the hybrids (T3 and T4) with their parents. Pullets of all treatments were fed the same complete feed and the same amount of feed at each stage. Chicken feed was divided into four phases, with metabolic energy, protein ratio in feed, and the amount of feed at each stage complying with the standard for meat-colored feather pullets. Pullets of the treatments were raised on rice husk floors and open cages with the same care and feeding regime. The results showed that at 140 days of age, the weight of T3 hybrid pullets was 1887 g/bird, and that of T4 hybrid pullets was 1815 g/bird; weight gain and FCR from 1 to 140 days old of T3 was 13.21 g/bird/day and 4.14 kg, and of T4 was 12.74 g/bird/day and 4.29 kg, respectively. These indicators of T3 compared to T4 have a clear difference (P < 0.05). T3 and T4 hybrid pullets meet the above criteria, which are inferior to those of pure Luong Phuong pullets, but are significantly improved compared to pure Choi pullets (P < 0.05). The heterosis of the above traits of T3 hybrid pullets is higher, while that of T4 hybrid pullets is lower than the average of their parents. From the above results, it can be concluded that hybrid pullets of T3 (♂ Choi x ♀ Luong Phuong) had better improvement in the above traits than hybrid pullets of T4 (♂Luong Phuong x ♀ Choi).
Keywords: Choi chicken; hybrid pullet; Luong Phuong chicken; two-way crossbreeding
Citation: Kien, T. T., Hien, T. Q. & Trung, T. Q. (2025). Growth characteristics of pullets from two-way crossbreeding between Choi and Luong Phuong chickens. Bulg. J. Agric. Sci., 31(5), 1025–1031
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| Date published: 2025-10-28
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