Black Speckled Australorps is actually bred to possess egg development. Plumage is black having quick light areas; ear-lobes was red-colored; brush is actually single. Down is actually white in along with; shanks was white, some pigmented and not long.
73 and of cockerels 0.88 kg. The live lbs of 150-day-old pullets was 1.82 and that regarding adult hens dos.2 kilogram. The fresh new alive pounds out-of dicks try 2.6 kg.
An average annual creation of Black Speckled Australorps are two hundred eggs weighing 55 g. Eggs shells was ointment-coloured. Fertility out-of eggs was 95%, hatchability 80-85%. Success price of one’s young doing 150 days are 95%; compared to adults try ninety%.
The live pounds off 56-day-old pullets is 0
The fresh new wild birds are modified so you can power supply keeping often privately or from inside the groups. Another ability is actually a high resistance to pullorum disease. He is essential because providers of your recessive sp gene, which is guilty of this new light colour of the plumage and you will a much better look of carcasses. Introduction of that it gene to the populations having the dominating Elizabeth gene carry out join their wider application of the chicken business.
RUSSIAN White (Russkaya belaya)
So it breed was brought while in the 1929-53 by mating Light Leghorn guys which have women away from local populations, accompanied by inter se breeding out of crosses with various levels from Leghorn heredity. Brand new crossbreeding on it Leghorns various resource – Danish, English, American – for every which consists of very own production and you will external has actually. Choice had the aim of improving eggs creation, stability, growth rate and you will alive lbs.
Just before 1965 Russian Whites had been the principal egg-laying chickens from the USSR. The common annual manufacturing try 175-190 egg per coating; eggs weight is actually 57-60 grams. In-breeding county facilities the fresh new egg creation of Russian Whites is actually 220-230 per year. Yet not, less than commercial criteria Russian Whites couldn’t contend with imported outlines and you may crosses regarding White Leghorns. It dropped behind by forty-50 eggs per year by doing dos.5-step three.0 g from inside the egg weight.
As a result of this this new inventory out of Russian Whites, which in 1975 is 29.eight billion, had diminished to help you cuatro.4 million because of the 1980. He or she is nevertheless utilized in big wide variety inside the Turkmenia, Uzbekistan and Azerbaijan.
At this time, breeding work on Russian Light birds is done during the Yasnaya Polyana reproduction ranch during the Stavropol region. In the a knockout post earliest phase (1967-69), reproduction try predicated on choices and you will parents was indeed examined of the their daughters’ manufacturing. For the 1970 the new reproduction system try transformed in order to creation of inbred traces (n = 40) and an operating people. A portion of the types of inbreeding is actually anywhere between paternal 50 % of-sibs, hardly ever anywhere between full sibs. The latest birds hatched when you look at the 1973 had a keen inbreeding coefficient (Wright) regarding nearly 37%. The average production of the fresh new six ideal inbred contours inside the 475 weeks try 200-205 egg weighing 54-56 g. The newest crosses of them contours got a higher development – 211-236 eggs a-year.
Birds from the populace was white during the lbs and develop short egg. Its plumage was white; epidermis and you may shanks are reddish; he’s got one brush.
The latest real time weight regarding 8-week-dated pullets is 0.55 kilogram; that cockerels is actually 0.56 kilogram. Mature hens consider step one.6 kilogram, dicks 2.0 kg. Fertility away from eggs reaches 93%; hatchability is actually 82%; emergency rates regarding more youthful and you may grownups is actually 95 and you may ninety-five% respectively. Egg design to the first and you may advanced people throughout the 70 months of every day life is 182 and 206 egg off 55 grams.
Of a few attention is the society from Russian Light chickens in the the fresh new Most of the-Partnership Lookup Institute from Farm Creature Breeding and you may Genes. It was developed by option for resistance to subnormal temperature within the the first days of life and also for highest eggs creation. Birds is actually without leukosis and also have a top resistance to Marek’s problem and carcinomas of organs. Chicks are raised from the temperatures being 8-10 lower than regular. In 1984 which inhabitants numbered five-hundred head.