Black colored Speckled Australorps was bred to own egg creation. Plumage are black colored which have small white areas; ear-lobes was reddish; comb are solitary. Off is white inside the colour; shanks are white, a bit pigmented and not enough time.
73 and of cockerels 0.88 kilogram. The brand new alive pounds off 150-day-old pullets was step one.82 hence regarding adult hens 2.dos kg. The newest alive weight away from dicks was 2.six kg.
The common annual production of Black colored Speckled Australorps are two hundred eggs consider 55 grams. Egg shells is actually lotion-coloured. Fertility away from eggs was 95%, hatchability 80-85%. Endurance speed of your own more youthful as much as 150 weeks was 95%; that grownups is ninety%.
This new alive weight off 56-day-dated pullets is actually 0
Brand new wild birds are well adapted to electric battery remaining possibly myself or in the groups. Some other feature is actually a top resistance to pullorum situation. They are very important as the companies of your recessive sp gene, that is guilty of brand new white colour of brand new plumage and a much better appearance of carcasses. Advent of that it gene to your populations getting the principal E gene manage subscribe the wide usage of the poultry industry.
RUSSIAN Light (Russkaya belaya)
Which breed is actually put throughout 1929-53 because of the mating White Leghorn people having female out-of regional populations, followed closely by inter se breeding away from crosses with various levels out-of Leghorn inheritance. Brand new crossbreeding with it Leghorns of different origin – Danish, English, Western – for every having its own design and you will exterior possess. Possibilities had the aim of improving egg design, stability, rate of growth and alive weight.
Before 1965 Russian Whites was indeed the principal egg-laying chickens on USSR. The common annual production are 175-190 egg each level; egg weight try 57-sixty grams. In breeding condition farms the fresh egg creation of Russian Whites is 220-230 a-year. However, around industrial criteria Russian Whites couldn’t compete with imported contours and you may crosses away from Light Leghorns. They dropped at the rear of by 40-fifty egg annually and also by up to dos.5-3.0 g within the eggs pounds.
As a result of this the new stock out of Russian Whites, that 1975 is 29.seven mil, got reduced to help you 4.4 billion of the 1980. He’s nevertheless used in big wide variety into the Turkmenia, Uzbekistan and Azerbaijan.
Currently, breeding focus on Russian White birds is carried out in the Yasnaya Polyana breeding farm within the Stavropol territory. Inside basic phase (1967-69), breeding was according to possibilities and you may parents was basically analyzed because of the the daughters’ production. Into the 1970 the new reproduction program is turned to help you production of inbred lines (n = 40) and a running population. A portion of the variety of inbreeding are anywhere between paternal 50 % of-sibs, rarely between full sibs. The fresh new wild birds hatched when you look at the 1973 got an inbreeding coefficient (Wright) of nearly 37%. The common production of new half dozen ideal inbred traces from inside the 475 months try 2 hundred-205 egg weigh 54-56 grams. The new crosses of those lines had a top design – 211-236 eggs a year.
Chickens associated with the society is white within the pounds and create quick egg. Their plumage try white; body and shanks try yellow; he has got one comb.
The live weight regarding 8-week-dated pullets was 0.55 kilogram; that cockerels are 0.56 kilogram. Mature hens consider step 1.6 kilogram, cocks 2.0 kg. Fertility off egg reaches 93%; hatchability was 82%; survival rates of young and you may adults are 95 and you will ninety-five% correspondingly. Eggs design to your initially and you will advanced people during 70 months off life is 182 and you may 206 egg away from 55 g.
Of a few attract is the population off Russian Light chickens at the brand new The-Connection Research Institute off Farm Animal Breeding and Genes. It had been produced by selection for effectiveness subnormal temperature for the the original times datingmentor.org/nl/politieke-dating of lifestyle and for large egg design. Birds is clear of leukosis and now have a high effectiveness Marek’s state and you can carcinomas from body organs. Girls is raised at the temperature which happen to be 8-ten below regular. In 1984 it populace numbered five hundred head.