Women arrived at sexual readiness in the 162 times of age

Women arrived at sexual readiness in the 162 times of age

Black colored Speckled Australorps is bred to possess eggs production. Plumage is black having quick light spots; ear-lobes was yellow; brush is actually unmarried. Down is actually light from inside the the colour; shanks was white, a bit pigmented rather than long.

73 and of cockerels 0.88 kilogram. Brand new live weight of 150-day-dated pullets was step one.82 which away from adult hens dos.dos kilogram. The fresh alive lbs from dicks was 2.six kilogram.

The common annual production of Black Speckled Australorps try 2 hundred eggs weigh 55 grams. Egg shells was solution-colored. Virility out-of eggs are 95%, hatchability 80-85%. Survival rates of younger doing 150 days are 95%; that adults is actually 90%.

The real time lbs regarding 56-day-dated pullets was 0

The fresh new birds are very well adapted to battery pack staying either personally otherwise for the groups. Other ability are a top resistance to pullorum disease. He’s essential as the companies of the recessive sp gene, that is responsible for the fresh light shade of the fresh new plumage and a much better look of carcasses. Introduction of that it gene for the communities obtaining dominating Age gene carry out donate to its large use by the poultry industry.

RUSSIAN White (Russkaya belaya)

So it reproduce try put while in the 1929-53 from the mating Light Leghorn boys having female out-of regional communities, accompanied by inter se reproduction from crosses with assorted grades of Leghorn genetics. New crossbreeding in it Leghorns of various provider – Danish, English, Western – for each and every using its individual development and you can exterior keeps. Alternatives had the reason for boosting eggs design, stability, growth rate and you can live weight.

In advance of 1965 Russian Whites was the main egg-installing chickens throughout the USSR. An average yearly creation is actually 175-190 egg for each and every level; eggs lbs is 57-60 grams. In breeding county farms the new eggs creation of Russian Whites is 220-230 a-year. However, lower than industrial criteria Russian Whites couldn’t contend with brought in outlines and you may crosses of Light Leghorns. It decrease about because of the forty-50 eggs annually and also by as much as 2.5-step three.0 g when you look at the eggs pounds.

This is why new stock from Russian Whites, which in 1975 try 29.seven mil, got diminished to cuatro.4 mil of the 1980. He’s nonetheless included in considerable quantity during the Turkmenia, Uzbekistan and you will Azerbaijan.

Currently, breeding focus on Russian White birds is carried out into the Yasnaya Polyana breeding ranch into the Stavropol area. In earliest phase (1967-69), breeding try predicated on selection and moms and dads had been evaluated of the its daughters’ creation. During the 1970 the new breeding program was transformed in order to production of inbred outlines (n = 40) and a control populace. Part of the form of inbreeding was between paternal 50 % of-sibs, seldom ranging from full sibs. The newest wild birds hatched when you look at the 1973 got a keen inbreeding coefficient (Wright) of almost 37%. An average production of the fresh six greatest inbred lines in the 475 days try 200-205 eggs weighing 54-56 grams. The newest crosses of them lines got increased production – 211-236 egg per year.

Birds on the people try white from inside the pounds and produce short egg. The plumage try white; epidermis and you will shanks are reddish; he’s one brush.

The latest alive lbs of 8-week-old pullets was 0.55 kg; that of cockerels try 0.56 kilogram. Mature hens consider 1.6 kilogram, dicks dos.0 kg. Virility from egg reaches 93%; hatchability try 82%; endurance rates away from more youthful and you may people is actually 95 and you can 92% respectively. Egg manufacturing to your initially and advanced people during 70 weeks regarding every day life is 182 and 206 eggs regarding 55 g.

Of a few attract is the people away from Russian White chickens in the brand new The-Relationship Lookup Institute away from Ranch Creature Breeding and you will Genetics. It had been produced by option for effectiveness subnormal temperatures inside the original times of lifetime and also for higher egg production. Birds try free of leukosis and also have a top effectiveness Marek’s problem and you will carcinomas out of body organs. Girls is actually raised at temperatures that are 8-10 below typical. In 1984 so it population designated five hundred direct.