Black Speckled Australorps are bred having eggs production. Plumage are black having short light spots; ear-lobes is red-colored; comb was single. Off is light during the the color; shanks is actually white, some pigmented and not a lot of time.
73 as well as cockerels 0.88 kg. The fresh new real time weight regarding 150-day-old pullets was step one.82 and that out-of adult hens 2.2 kg. The new alive pounds out-of cocks try 2.6 kg.
An average annual production of Black Speckled Australorps is two hundred eggs weigh 55 g. Egg shells is ointment-coloured. Fertility from egg are 95%, hatchability 80-85%. Success price of your own younger to 150 months was 95%; that adults are 90%.
The alive pounds out-of 56-day-dated pullets was 0
The new birds are modified in order to electric battery keeping often privately otherwise from inside the teams. Other element are a top resistance to pullorum disease. He is important since the carriers of recessive sp gene, that’s responsible for the new light shade of the brand new plumage and you may a far greater look of carcasses. Introduction of which gene towards the populations acquiring the dominant Age gene perform donate to their broad application by the chicken community.
RUSSIAN White (Russkaya belaya)
Which reproduce try delivered during 1929-53 by mating White Leghorn boys which have lady out of local communities, followed by inter se reproduction regarding crosses with various levels off Leghorn inheritance. The latest crossbreeding involved Leghorns of different provider – Danish, English, American – for every single having its very own manufacturing and you can external features. Possibilities encountered the purpose of improving eggs creation, viability, growth rate and you can real time lbs.
Before 1965 Russian Whites had been the primary egg-installing birds regarding the USSR. The common annual production are 175-190 egg for each coating; egg weight is 57-sixty g. In breeding state facilities new eggs production of Russian Whites is 220-230 annually. However, lower than industrial requirements Russian Whites cannot contend with brought in contours and crosses of White Leghorns. It decrease escort girls in Palmdale trailing from the forty-50 egg a-year and by doing dos.5-step three.0 g inside the egg lbs.
For that reason this new stock out of Russian Whites, which in 1975 are 30.7 billion, got decreased so you’re able to 4.cuatro billion of the 1980. He is nevertheless found in big amounts into the Turkmenia, Uzbekistan and Azerbaijan.
Today, breeding focus on Russian Light birds is completed in Yasnaya Polyana breeding ranch within the Stavropol region. Inside the first phase (1967-69), breeding was centered on possibilities and you may parents had been evaluated by the the daughters’ manufacturing. Inside the 1970 the fresh new breeding system are transformed so you can creation of inbred contours (n = 40) and you may an operating inhabitants. An element of the form of inbreeding are anywhere between paternal 1 / 2 of-sibs, hardly ever anywhere between complete sibs. The fresh new birds hatched in 1973 had an inbreeding coefficient (Wright) off nearly 37%. The common creation of the brand new six finest inbred lines inside the 475 days is actually 200-205 eggs consider 54-56 grams. The fresh new crosses of these lines got increased creation – 211-236 egg annually.
Chickens on the society is actually light from inside the lbs and create small eggs. The plumage is white; skin and shanks is reddish; he’s got one comb.
The fresh alive lbs away from 8-week-dated pullets try 0.55 kg; that of cockerels is actually 0.56 kg. Mature hens weighing 1.six kilogram, dicks dos.0 kilogram. Virility away from eggs is located at 93%; hatchability try 82%; endurance price away from young and you will grownups was 95 and you may 92% correspondingly. Eggs creation towards the initially and you will intermediate population through the 70 days regarding every day life is 182 and 206 egg out of 55 g.
Of some notice is the population regarding Russian White birds during the brand new The-Union Browse Institute out-of Ranch Animal Breeding and you can Genetics. It had been developed by choice for resistance to subnormal temperature into the the original times of lives as well as high eggs production. Birds is actually free from leukosis and possess a premier resistance to Marek’s situation and you may carcinomas away from organs. Girls is raised within temperature that are 8-ten lower than regular. Back in 1984 it populace numbered five hundred direct.