Black Speckled Australorps try bred to own eggs design. Plumage are black having short white locations; ear-lobes is actually red; brush try unmarried. Off try white in the the color; shanks is light, slightly pigmented rather than a lot of time.
73 and of cockerels 0.88 kilogram. The new live pounds regarding 150-day-old pullets is 1.82 hence regarding mature hens dos.2 kg. The newest alive weight out of cocks is actually 2.six kg.
The typical annual production of Black colored Speckled Australorps try two hundred egg weigh 55 g. Egg shells is actually cream-colored. Virility from egg is actually 95%, hatchability 80-85%. Survival speed of the more youthful doing 150 weeks try 95%; compared to people try 90%.
The fresh real time weight off 56-day-dated pullets try 0
Brand new wild birds are very well adjusted in order to power supply keeping sometimes in person otherwise inside organizations. Other element is actually a premier effectiveness pullorum condition. They are very important due to the fact companies of your recessive sp gene, which is responsible for this new light shade of the plumage and you will a much better appearance of carcasses. Introduction of it gene to the communities getting the dominating Elizabeth gene perform join its greater usage by the poultry globe.
RUSSIAN Light (Russkaya belaya)
This reproduce is actually introduced throughout 1929-53 from the mating Light Leghorn people with girls away from local communities, followed by inter se reproduction regarding crosses with assorted levels off Leghorn heredity. The latest crossbreeding involved Leghorns of various supply – Danish, English, American – for every single which consists of own production and you will additional keeps. Possibilities met with the aim of improving eggs development, stability, growth rate and you will alive pounds.
Just before 1965 Russian Whites had been the main eggs-installing chickens about USSR. The average annual creation was 175-190 eggs for every level; eggs weight was 57-60 grams. In breeding state facilities the latest egg creation of Russian Whites is actually 220-230 a-year. Yet not, around commercial requirements Russian Whites cannot compete with brought in contours and you can crosses from White Leghorns. It dropped at the rear of because of the forty-50 eggs per year by to dos.5-step 3.0 grams inside the egg weight.
As a result of this new inventory out of Russian Whites, which in 1975 is 31.7 million, had diminished so you can cuatro.4 billion of the 1980. He could be nonetheless used in big numbers from inside the Turkmenia, Uzbekistan and you will Azerbaijan.
At present, breeding work at Russian Light chickens is performed in Yasnaya Polyana breeding ranch when you look at the Stavropol region. For the first stage (1967-69), breeding is predicated on options and you can mothers was evaluated because of the the daughters’ development. In the 1970 the fresh reproduction system is actually turned so you can production of inbred outlines (letter = 40) and a processing people. Area of the type of inbreeding are ranging from paternal 50 % of-sibs, rarely anywhere between full sibs. The latest birds hatched inside the 1973 had a keen inbreeding coefficient (Wright) of nearly 37%. An average creation of the half dozen ideal inbred lines within the 475 weeks was two hundred-205 egg weighing 54-56 grams. The fresh new crosses ones contours had increased development – 211-236 egg a year.
Chickens regarding the people was white during imperative link the weight and create brief egg. Its plumage are light; surface and you may shanks was red; they have one comb.
Brand new real time weight off 8-week-old pullets try 0.55 kg; that of cockerels try 0.56 kilogram. Adult hens consider 1.6 kg, dicks dos.0 kg. Fertility of egg is at 93%; hatchability is actually 82%; endurance speed out-of more youthful and you can people was 95 and you can ninety five% respectively. Eggs creation into the initially and intermediate society throughout 70 months of life is 182 and you can 206 egg regarding 55 grams.
Of some attention ‘s the population off Russian Light birds on the latest All of the-Commitment Research Institute off Farm Creature Reproduction and Genetics. It was developed by selection for resistance to subnormal temperatures into the the initial days of lives as well as for large egg design. Chickens is actually clear of leukosis and then have a leading effectiveness Marek’s disease and you may carcinomas of body organs. Chicks was increased on heat which are 8-ten less than typical. Back in 1984 which populace numbered five-hundred head.