• A hybrid breed of various types of R.I.R. and Barred Rock
• Feather colour: black with gold markings
• Average body weight at 20 weeks: 1.600 kg
• Average body weight at 72 weeks: 2.200 kg
• Age at start of laying period: 21 weeks
• Age at peak of laying period: 25 weeks
• Peak of production: 90 % and more
• Production at the age of 72 weeks: 300 eggs/bird
• Monthly mortality: 0.3 to 0.5 %
• Average egg weight: 63 g
• Egg shell colour: brown

Maran

A hybrid breed of Barred Plymouth Rock and Rhode Island Red Feather colour: speckled Average body weight at 20 weeks: 1.600 kg Average body weight at 72 weeks: 2.200 kg Age at start of laying period: 21 weeks Age at peak of laying period: 25 weeks Peak of production: 90 % and more Production at the age of 72 weeks: 270-290 eggs/bird Monthly mortality: 0.3 to 0.5 % Egg shell colour: brown   Bluebell A hybrid breed of various types of Rhode and Coucou Feather colour: slate grey Average body weight at 20 weeks: 1.600 kg Average body weight at 72 weeks: 2.400 kg to 2.500 kg Age at peak of laying period: 26 weeks Hen housed performance at 72 weeks: up to 260 eggs Peak of production: 90 % and more Monthly mortality: 0.3 to 0.5 % Average egg weight: 63 g Egg shell colour: brown   A hybrid breed of Sussex and Rhode Island Feather colour: white with black markings on the neck and black tail and wing tips Average body weight at 20 weeks: 1.750 kg Average body weight at 72 weeks: 2.700 kg Age at start of laying period: 21 weeks Age at peak of laying period: 26 weeks Peak of production: 85 % and more Production at the age of 52 weeks: 235 to 250 eggs/bird Monthly mortality: 0.3 to 0.5 % Egg weight: 85 % of eggs weigh more than 57 g Average egg weight: 63-64 g Egg shell colour: brown       A modern White Leghorn hybrid Feather colour: white Bird temperament: very docile Average body weight at 18 weeks: 1.200 to 1.300 kg Average body weight at end of production: 1.700 kg to 1.900 kg Age at 50% hen-day production: 145-150 days Hen housed performance at 12 months: 302-312 eggs Hen housed performance at 14 weeks: 340-350 eggs Peak of production: 92-95 % Livability at growing period: 97-98 % Livability at laying period: 94-96 % Feed consumption between 0-20 weeks: 7.0-7.5 kg/bird Feed consumption at laying period: 105-115 g/bird/day