Black colored Speckled Australorps was bred for eggs creation. Plumage are black colored having quick white places; ear-lobes try yellow; comb was solitary. Down is actually white in the colour; shanks is actually white, a bit pigmented and not a lot of time.
73 as well as cockerels 0.88 kg. The brand new alive lbs of 150-day-old pullets is actually step one.82 which from mature hens dos.2 kilogram. New live pounds from dicks are 2.6 kilogram.
The typical yearly production of Black Speckled Australorps try 200 egg weigh 55 g. Eggs shells are cream-colored. Fertility away from egg is 95%, hatchability 80-85%. Success speed of your own young to 150 weeks are 95%; that grownups is ninety%.
The real time pounds out-of 56-day-old pullets was 0
The newest wild birds are very well adapted in order to battery remaining either truly otherwise into the communities. Several other feature are a premier resistance to pullorum condition. He is crucial given that providers of your own recessive sp gene, that is accountable for the white shade of the newest plumage and you will a much better appearance of carcasses. Regarding this gene toward populations obtaining the principal Age gene would sign up for their large utilization of the poultry industry.
RUSSIAN Light (Russkaya belaya)
It breed was brought during 1929-53 by the mating White Leghorn people that have women away from local communities, accompanied by inter se reproduction of crosses with different levels from Leghorn inheritance. The fresh crossbreeding inside it Leghorns of different source – Danish, English, Western – for each using its own manufacturing and you may exterior has. Options encountered the function of improving eggs creation, stability Greensboro dating, growth rate and you may live pounds.
Before 1965 Russian Whites was basically the principal eggs-putting birds from the USSR. The typical yearly production was 175-190 egg each covering; egg lbs was 57-60 grams. In-breeding condition farms the newest egg production of Russian Whites are 220-230 a-year. But not, not as much as commercial conditions Russian Whites couldn’t compete with brought in lines and you may crosses away from Light Leghorns. It dropped trailing by the forty-50 eggs a-year and also by up to 2.5-step 3.0 g inside egg weight.
Due to this fact new stock out-of Russian Whites, that 1975 is actually 31.7 mil, got diminished in order to cuatro.cuatro mil by the 1980. He could be nevertheless used in big quantity for the Turkmenia, Uzbekistan and Azerbaijan.
At present, reproduction focus on Russian White birds is performed inside the Yasnaya Polyana reproduction farm within the Stavropol region. Inside very first phase (1967-69), breeding is predicated on choices and you can parents was basically evaluated by their daughters’ development. Within the 1970 the latest reproduction system is actually turned so you can production of inbred contours (letter = 40) and you will a control population. A portion of the kind of inbreeding try anywhere between paternal half of-sibs, seldom ranging from complete sibs. The latest wild birds hatched in the 1973 got a keen inbreeding coefficient (Wright) off nearly 37%. The typical production of brand new half dozen best inbred outlines in 475 days try 200-205 eggs weigh 54-56 grams. The brand new crosses of these traces had a top development – 211-236 eggs a year.
Birds regarding the inhabitants is actually light when you look at the weight and produce small eggs. Its plumage try light; facial skin and you may shanks are reddish; he’s just one comb.
The fresh live weight out-of 8-week-dated pullets is 0.55 kg; that of cockerels is 0.56 kg. Mature hens consider step 1.6 kg, cocks dos.0 kg. Fertility away from eggs is at 93%; hatchability are 82%; survival rate of more youthful and you will people is 95 and you may ninety five% correspondingly. Eggs development towards 1st and advanced inhabitants through the 70 months of every day life is 182 and you will 206 egg away from 55 grams.
Of a few attract ‘s the populace from Russian White chickens from the the fresh new All of the-Union Browse Institute from Ranch Creature Breeding and you will Family genes. It absolutely was created by choice for resistance to subnormal temperatures during the the first days of lives as well as large egg development. Birds is free from leukosis and now have a top effectiveness Marek’s condition and you can carcinomas of body organs. Chicks is increased at the heat which can be 8-ten lower than regular. Back in 1984 so it population numbered five hundred lead.