Female reach sexual maturity at 162 days of decades

Female reach sexual maturity at 162 days of decades

Black colored Speckled Australorps was bred to own eggs production. Plumage was black that have quick white areas; ear-lobes was red; brush try single. Down was white into the colour; shanks is actually light, somewhat pigmented and not long.

73 and of cockerels 0.88 kilogram. The latest live lbs from 150-day-old pullets was step one.82 and therefore from adult hens dos.dos kilogram. The fresh real time pounds regarding dicks are 2.6 kg.

The average annual production of Black Speckled Australorps try 200 eggs weigh 55 grams. Egg shells try cream-colored. Fertility from egg is actually 95%, hatchability 80-85%. Survival speed of your own more youthful up to 150 days was 95%; compared to grownups is actually 90%.

New real time pounds of 56-day-old pullets try 0

The brand new wild birds are well adapted to battery remaining possibly personally or when you look at the groups. Various other element is a high resistance to pullorum situation. They are extremely important as the providers of one’s recessive sp gene, that’s accountable for brand new white shade of the fresh plumage and you can a better look of carcasses. Advent of that it gene on the populations having the dominant Age gene carry out subscribe the wide use by the chicken business.

RUSSIAN Light (Russkaya belaya)

It breed try produced while in the 1929-53 because of the mating only lads fiyatlarД± Light Leghorn men with female from regional communities, followed closely by inter se reproduction regarding crosses with assorted levels from Leghorn genetics. The fresh new crossbreeding with it Leghorns various source – Danish, English, American – for each which consists of very own manufacturing and outside keeps. Options encountered the intent behind boosting egg creation, viability, rate of growth and you may live lbs.

In advance of 1965 Russian Whites was in fact the main egg-installing birds in the USSR. An average annual creation try 175-190 eggs per coating; eggs pounds try 57-sixty g. In breeding county farms the fresh new eggs production of Russian Whites is actually 220-230 a year. But not, below commercial requirements Russian Whites cannot contend with imported contours and you will crosses out of White Leghorns. It decrease about of the 40-50 egg a year and also by up to dos.5-3.0 grams from inside the eggs lbs.

Because of this the fresh stock out of Russian Whites, that 1975 was 31.seven million, got reduced in order to 4.4 mil by the 1980. He is however included in big quantity into the Turkmenia, Uzbekistan and you will Azerbaijan.

At present, reproduction work on Russian White birds is carried out for the Yasnaya Polyana reproduction farm during the Stavropol area. When you look at the earliest stage (1967-69), reproduction try based on solutions and moms and dads was examined of the their daughters’ design. Inside 1970 the fresh reproduction system was switched to help you production of inbred lines (letter = 40) and you will a control populace. A portion of the form of inbreeding was anywhere between paternal half of-sibs, rarely anywhere between complete sibs. The newest birds hatched in the 1973 got an inbreeding coefficient (Wright) from almost 37%. The average creation of new half dozen top inbred lines in 475 months try two hundred-205 egg weighing 54-56 g. The latest crosses of these outlines got a high production – 211-236 egg per year.

Birds for the society are white into the pounds and create small eggs. Its plumage is actually light; surface and you can shanks was red-colored; they have one comb.

The live pounds of 8-week-dated pullets is 0.55 kilogram; regarding cockerels was 0.56 kilogram. Adult hens weigh step one.6 kilogram, cocks 2.0 kilogram. Virility away from egg reaches 93%; hatchability are 82%; success price of younger and you will grownups is actually 95 and you can 92% respectively. Eggs development with the first and you may intermediate society throughout 70 weeks away from life is 182 and you may 206 egg regarding 55 grams.

Of a few desire ‘s the people out of Russian White birds at the latest All of the-Commitment Browse Institute regarding Farm Creature Breeding and you will Genetics. It was created by choice for effectiveness subnormal temperatures inside the the first times of existence as well as for highest eggs creation. Birds are free of leukosis and also have a top resistance to Marek’s disease and you will carcinomas out of organs. Chicks is increased at temperatures that are 8-ten below typical. Back in 1984 it society numbered five hundred head.

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