The newest live weight away from 8-week-old birds was 0.8 kilogram; adult hens weigh 2.2-dos.5 and cocks step three.5-cuatro.5 kg. Egg shell was brownish. Fertility out-of eggs was 95% and you can hatchability 80-85%. Death of your own younger are 5-7% as well as grownups 5%. The average creation is 180-200 egg a year; egg lbs is 58-sixty g. The production of winners is 270-290 eggs.
Crossbred progeny regarding Yerevan hens and White Leghorn cocks develop 230 egg annually weigh sixty g. The newest alive lbs out-of mature levels is step one.8-dos.0 kg. Specialized egg outlines off Yerevan hens are utilized because the girls mothers in crosses that have men lines off Light Leghorns.
Official dual-mission (animal meat and you will egg) contours out-of Yerevan chickens is actually a very important hereditary financial support to the creation of this new artificial animal meat-and-egg lines of broiler crosses.
That it reproduce was made about Central Black-World region of your own Russian Federation for the Orlov, Kursk and you will Voronezh regions, as conventional possibilities. Yards.F. Ivanov is actually of your advice that the Yurlov reproduce originated from crosses out of regional hens which have attacking dicks and Brahma boys.
Brand new breed is formed by the offered group of cocks having an effective solid and you will long-drawn-out crow. It absolutely was thought that choice with the beauty and you may duration of crowing carry out assist to make a powerful constitution with powerful system and you will flirt4free taktikleri broad breast.
While in the 1941-forty-five the majority of the fresh new Yurlov population is actually lost. When you look at the 1948, the fresh All of the-Partnership Chicken Breeding Institute lead 27 specimens out-of Goryaninovka town into the Kursk area. From the 1951 the newest gene preservation people had risen to two hundred head. The common efficiency within this head try 124 egg a year. After it was it is possible to to raise the newest overall performance around 154 eggs from 71 grams annually.
Yurlov chickens certainly are the ancestors of a few brand new home-bred breeds: Pervomai, Adler Silver and you may Zagorsk Fish birds still have inside their genotype 1/two to three/8 out-of Yurlov heredity.
Yurlov birds feel the better-manifested emails regarding meat-sorts of Far eastern and you can online game breeds. Their body try broad, deep and you can much time. Your mind was brief, which have broad front bone, high orbital arches and purple ear-lobes. He’s got an individual, rose otherwise walnut comb. The newest base is long and you will strong, reddish otherwise black within the along with. The newest plumage is rather fluffy and of various colour; dark gold, fish and red-colored certainly are the commonest. Girls feather most much slower.
The real time pounds off 8-week-old birds are 0.9-step one.2 kilogram; adult hens weighing 2.6-3.0 and cocks 3.5-4.0 kilogram. Yearly design is 160-180 egg away from 60-80 grams. Egg shell is green-brown. Virility regarding eggs try 91% and you will hatchability 80%. Emergency rate of more youthful are ninety% as well as adults 88-93%.
ZAGORSK Fish (Zagorskaya lososevaya)
This breed group is used for meat and egg production. It was created during 1950-59 by breeders from the Ail-Union Poultry Breeding Research Institute in the Moscow region starting with a four-way cross. In 1950 they made reciprocal crosses of Russian Whites with the New Hampshire, Rhode Island Red and Yurlov breeds. The F1 crosses were backcrossed to Rhode Island Red and Yurlov cocks.
The foundation wild birds had a high development and you will stability. Such as for instance, Rhode Isle Yellow cocks got people mothers which laid no less than simply 180 egg a year and you may Yurlov dicks originated out-of an excellent hen hence put 185 egg.
Within the 1953 what number of Fish birds having step 3/8 regarding Yurlov bloodstream was 227. They were bred inside the a close population in which family alternatives was familiar with merge high putting speed, stability, eggs pounds and a good fleshing. The fresh new real time pounds of ninety-day-old Zagorsk Fish cockerels try step 1.eight kg; ninety.6% regarding carcasses had been rated once the first degree.