Black Speckled Australorps is bred to have eggs development. Plumage is actually black which have brief white spots; ear-lobes try reddish; comb was solitary. Off is actually light when you look at the colour; shanks was white, a little pigmented and never enough time.
73 as well as cockerels 0.88 kilogram. The fresh new real time weight of 150-day-dated pullets are step 1.82 and that out-of adult hens 2.dos kilogram. The brand new live pounds away from cocks is 2.6 kilogram.
The common yearly production of Black colored Speckled Australorps is two hundred egg weighing 55 g. Eggs shells try ointment-colored. Virility out of eggs is actually 95%, hatchability 80-85%. Success speed of more youthful doing 150 days is actually 95%; regarding people are 90%.
The real time weight out-of 56-day-old pullets is 0
The newest birds are well modified to help you battery staying possibly actually or when you look at the communities. Another element is a top resistance to pullorum situation. They are crucial given that providers of your recessive sp gene, which is accountable for the fresh new white colour of brand new plumage and you can a better appearance of carcasses. Regarding which gene into the communities acquiring the prominent E gene would join their broad use from the poultry community.
RUSSIAN White (Russkaya belaya)
That it reproduce are put during 1929-53 by mating White Leghorn guys that have females off regional communities, with inter se breeding away from crosses with assorted grades of Leghorn genetics. The brand new crossbreeding inside Leghorns of various origin – Danish, English, Western – for each which consists of very own design and you may outside has. Options had the intent behind improving egg manufacturing, stability, rate of growth and you may real time weight.
Just before 1965 Russian Whites had been the principal eggs-laying chickens about USSR. An average annual production was 175-190 eggs for every single layer; eggs weight was 57-60 grams. In breeding condition facilities the latest eggs creation of Russian Whites is 220-230 a-year. not, around industrial standards Russian Whites cannot contend with brought in Montgomery AL escort contours and you will crosses away from White Leghorns. They fell trailing of the 40-50 eggs a year and also by up to dos.5-step 3.0 grams into the egg weight.
As a result of this this new inventory regarding Russian Whites, which in 1975 was 30.seven million, got diminished so you’re able to 4.4 billion by 1980. He’s nevertheless utilized in big amounts into the Turkmenia, Uzbekistan and you may Azerbaijan.
Today, breeding run Russian White birds is completed for the Yasnaya Polyana reproduction farm during the Stavropol region. When you look at the first stage (1967-69), reproduction was centered on selection and you will mothers was basically evaluated by the its daughters’ creation. Into the 1970 new reproduction system is actually transformed so you’re able to production of inbred lines (letter = 40) and a control inhabitants. The main types of inbreeding try ranging from paternal 50 % of-sibs, seldom ranging from complete sibs. The brand new wild birds hatched in 1973 got an inbreeding coefficient (Wright) out-of nearly 37%. The average creation of brand new half dozen finest inbred lines within the 475 days are 200-205 egg weighing 54-56 grams. New crosses of them lines got a higher manufacturing – 211-236 egg a-year.
Chickens on the people are white inside weight and develop brief eggs. Their plumage are light; surface and you can shanks are yellow; he has got just one comb.
The real time pounds out of 8-week-old pullets is actually 0.55 kg; regarding cockerels are 0.56 kg. Adult hens weighing step one.6 kg, dicks 2.0 kilogram. Fertility off eggs has reached 93%; hatchability is actually 82%; endurance rate out of younger and you may adults try 95 and 92% respectively. Eggs creation to your initial and you can intermediate population through the 70 days away from every day life is 182 and you may 206 egg from 55 g.
Of a few interest ‘s the society regarding Russian White birds at the this new Most of the-Relationship Research Institute out of Ranch Animal Breeding and Genes. It actually was created by choice for effectiveness subnormal temperatures during the the original days of lifetime and also for higher egg manufacturing. Chickens was without leukosis and also have a top resistance to Marek’s condition and you may carcinomas out-of organs. Girls are increased in the temperatures that are 8-10 below normal. Back in 1984 which society numbered five-hundred direct.
