Black colored Speckled Australorps are bred to possess egg production. Plumage was black having brief light places; ear-lobes is purple; brush was single. Down is actually white within the the color; shanks are light, quite pigmented and not a lot of time.
73 as well as cockerels 0.88 kg. The brand new alive lbs from 150-day-old pullets is step one.82 and that away from adult hens dos.2 kg. The latest live pounds regarding dicks try dos.six kg.
The average annual production of Black colored Speckled Australorps is actually two hundred eggs consider 55 g. Egg shells is actually ointment-colored. Virility out of egg try 95%, hatchability 80-85%. Success rate of more youthful up to 150 weeks is actually 95%; that grownups are 90%.
The brand new live weight from 56-day-dated pullets are 0
The fresh new birds are adjusted so you’re able to electric battery keeping often myself otherwise into the groups. Various other feature is actually a leading effectiveness pullorum disease. He’s important as providers of one’s recessive sp gene, that’s guilty of the light shade of the newest plumage and you will a much better look of carcasses. Regarding that it gene into the communities getting the prominent Age gene carry out contribute to the large use from the poultry industry.
RUSSIAN White (Russkaya belaya)
That it breed try produced throughout 1929-53 because of the mating Light Leghorn guys that have female off local communities, accompanied by inter se reproduction out-of crosses with assorted levels regarding Leghorn genetics. New crossbreeding involved Leghorns various provider – Danish, English, Western – per having its individual creation and exterior enjoys. Options had the intent behind boosting egg production, viability, growth rate and you can real time weight.
Before 1965 Russian Whites was indeed the principal eggs-installing chickens about USSR. An average yearly manufacturing is 175-190 egg per coating; egg weight is actually 57-60 g. In-breeding state farms the new egg creation of Russian Whites are 220-230 a-year. Although not, less than commercial standards Russian Whites couldn’t take on brought in outlines and you can crosses from White Leghorns. It decrease behind by the forty-50 egg annually and also by as much as dos.5-3.0 grams into the egg weight.
For that reason the newest inventory out-of Russian Whites, that 1975 was 29.eight mil, had decreased so you’re able to 4.4 billion from the 1980. He’s nevertheless used in big numbers in the Turkmenia, Uzbekistan and you can Norwalk CA escort review Azerbaijan.
Currently, reproduction work at Russian Light birds is done within the Yasnaya Polyana reproduction farm inside Stavropol area. During the first phase (1967-69), breeding was considering selection and you will parents was basically analyzed by the their daughters’ creation. When you look at the 1970 this new reproduction system are turned so you’re able to production of inbred contours (letter = 40) and a running society. A portion of the version of inbreeding try ranging from paternal half-sibs, seldom anywhere between full sibs. The newest birds hatched in the 1973 got an enthusiastic inbreeding coefficient (Wright) regarding nearly 37%. An average creation of the half dozen top inbred contours in 475 months are 200-205 eggs weigh 54-56 grams. The new crosses of them outlines had a top production – 211-236 eggs per year.
Birds in the population are white from inside the weight and create quick eggs. Its plumage is actually light; epidermis and you will shanks are red; they have a single comb.
The fresh real time weight from 8-week-dated pullets are 0.55 kilogram; that of cockerels was 0.56 kg. Mature hens weigh 1.six kilogram, cocks 2.0 kilogram. Fertility out-of egg reaches 93%; hatchability is 82%; survival rate regarding more youthful and you will people are 95 and you can ninety five% respectively. Egg design on initial and intermediate populace while in the 70 months from every day life is 182 and you can 206 eggs off 55 g.
Of some appeal ‘s the society from Russian White chickens at the the The-Relationship Look Institute regarding Farm Creature Breeding and you may Genes. It absolutely was created by option for resistance to subnormal temperature when you look at the the first times of existence and high eggs manufacturing. Chickens is free of leukosis and also a top effectiveness Marek’s condition and you may carcinomas from organs. Chicks is elevated at heat which happen to be 8-10 lower than typical. In 1984 this populace numbered five-hundred head.