Women come to sexual readiness from the 162 times of years

Black colored Speckled Australorps try bred to possess eggs production. Plumage try black colored which have brief white places; ear-lobes is purple; comb is single. Off is white for the along with; shanks is actually white, a bit pigmented and not a lot of time.

73 and of cockerels 0.88 kg. The fresh alive pounds from 150-day-old pullets try 1.82 which of adult hens 2.2 kg. This new live weight out-of dicks is actually dos.six kilogram.

The average yearly creation of Black Speckled Australorps try 200 eggs consider 55 g. Egg shells is actually solution-coloured. Virility out of egg try 95%, hatchability 80-85%. Endurance price of young around 150 months is actually 95%; regarding people is actually ninety%.

The new real time weight out of 56-day-old pullets is actually 0

The latest birds are well modified so you’re able to electric battery staying either directly otherwise in communities. Other feature is actually a top effectiveness pullorum disease. He or she is very important since companies of your recessive sp gene, which is responsible for the latest white colour of the fresh plumage and you can a much better look of carcasses. Advent of this gene to your communities obtaining dominant Elizabeth gene perform donate to its large usage by poultry globe.

RUSSIAN White (Russkaya belaya)

So it breed is actually lead through the 1929-53 from the mating Light Leghorn men which have lady out-of regional populations, with inter se reproduction of crosses with different grades of Leghorn inheritance. Brand new crossbreeding involved Leghorns of various origin – Danish, English, American – for each and every which consists of very own development and you will additional have. Options had the aim of improving egg design, stability, rate of growth and you can live weight.

Prior to 1965 Russian Whites were the principal eggs-laying chickens from the USSR. An average annual production are 175-190 eggs each coating; egg pounds is 57-60 grams. In breeding county facilities the latest eggs production of Russian Whites are 220-230 per year. However, not as much as industrial conditions Russian Whites cannot take on imported outlines and you can crosses off White Leghorns. It dropped trailing by forty-fifty egg a-year and by to 2.5-step 3.0 grams for the eggs lbs.

For that reason the fresh new inventory off Russian Whites, that 1975 try 31.eight million, got reduced so you’re able to cuatro.4 million by 1980. He could be nonetheless used in big number inside the Turkmenia, Uzbekistan and Azerbaijan.

Right now, reproduction work on Russian Light birds is carried out inside Yasnaya Polyana reproduction ranch inside Stavropol region. Into the basic phase (1967-69), breeding is actually considering choice and you may moms and dads was in fact analyzed by their daughters’ production. During the 1970 the fresh reproduction system try switched in order to production of inbred traces (n = 40) and an operating population. Part of the type of inbreeding was anywhere between paternal half-sibs, seldom between complete sibs. The fresh birds hatched inside 1973 had an enthusiastic inbreeding coefficient (Wright) out of nearly 37%. An average production of brand new half a dozen ideal inbred lines during the 475 months are 200-205 egg weighing 54-56 g. The latest crosses of these lines had a top production – 211-236 egg per year.

Birds from the population is white for the pounds and create brief egg. Its plumage try white; surface and you will shanks is actually purple; he’s just one brush.

This new live weight of 8-week-old pullets is actually 0.55 kilogram; regarding cockerels was 0.56 kilogram. Adult hens weighing step one.six kilogram, dicks 2.0 kilogram. Fertility of eggs reaches 93%; hatchability is actually 82%; emergency price away from younger and you can adults was 95 and you may ninety five% correspondingly. Egg manufacturing into the 1st and you may intermediate society throughout the 70 weeks out of life is 182 and 206 eggs out-of 55 g.

Of a few notice ‘s the inhabitants regarding Russian White chickens during the brand new All-Commitment Look Institute from Ranch Animal Breeding and you may Genetics MurrietaCA escort. It was developed by option for effectiveness subnormal temperature inside the the first times of lifetime as well as for high egg manufacturing. Birds is actually free of leukosis and have a top resistance to Marek’s disease and you will carcinomas away from organs. Chicks try increased within heat which happen to be 8-ten lower than normal. Back in 1984 so it population numbered five hundred head.

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