Production performance of third-generation LLV chickens
The study conducted at the Animal Experiments and Domestic Animal Conservation Center over four generations of selection from 2023 to 2024 aimed to evaluate the production capacity of LLV-TH3 chickens (line 5). The experiment monitored 2,440 chickens at one day old (1,220 roosters and 1,220 hens), all individually numbered; by the laying stage, 600 hens were used for breeding. The research results show that LLV chickens have an attractive appearance, similar to the Lac Thuy breed, which matches current consumer preferences. LLV chickens exhibited a relatively high survival rate in the chick stage, with 97.87% for roosters and 96.97% for hens; in the pullet and replacement stages, the survival rates were 97.70% for roosters and 96.34% for hens. At 8 weeks old, the body weight of roosters reached 907.95 g, while hens reached 719.89g. At 20 weeks, the body weight of LLV chickens reached 2,110.71 g (roosters) and 1,612.27g (hens), higher than that of the Lac Thuy breed. Egg production per hen at 68 weeks old reached 144.39 eggs, 4.23 eggs more than the initial generation and 8.66 eggs more than the Lac Thuy hen line (LT2), with a feed consumption rate of 3.09 kg per 10 eggs. The fertility rate of eggs was 95.15%, and the hatchability rate of first-grade chicks per incubated egg was 76.07%. In conclusion, the production performance of the third-generation LLV chickens met the set goals.
