New real time lbs of 8-week-old birds is actually 0.8 kg; mature hens weighing 2.2-2.5 and you may dicks step three.5-4.5 kilogram. Egg-shell was brown. Fertility out of egg are 95% and you can hatchability 80-85%. Mortality of one’s more youthful was 5-7% as well as people 5%. naughty nigerian chat room The common development try 180-2 hundred eggs a-year; egg pounds is actually 58-sixty g. The creation of winners is 270-290 eggs.
Crossbred progeny out-of Yerevan hens and you can White Leghorn dicks establish 230 eggs annually consider 60 grams. The fresh real time lbs from mature levels is actually step 1.8-2.0 kilogram. Official eggs outlines out of Yerevan hens are used because lady moms and dads into the crosses which have men outlines off White Leghorns.
Formal twin-purpose (animal meat and egg) lines away from Yerevan chickens was an important genetic resource on production of the brand new man-made beef-and-eggs traces regarding broiler crosses.
This reproduce was created regarding Central Black-Environment area of Russian Federation within the Orlov, Kursk and you can Voronezh nations, by means of traditional choice. Yards.F. Ivanov are of one’s thoughts the Yurlov reproduce originated crosses away from regional hens with fighting cocks and you can Brahma guys.
The latest breed was shaped because of the longer band of cocks that have a great good and you can long-drawn-away crow. It actually was considered that options to your beauty and you may period of crowing do help to generate a powerful structure having strong body and you can large breast.
During 1941-forty five the bulk of brand new Yurlov people was forgotten. In the 1948, the brand new All the-Partnership Chicken Breeding Institute introduced twenty seven specimens off Goryaninovka town within the Kursk part. Because of the 1951 this new gene conservation population had increased to 200 direct. The typical abilities within this group is 124 eggs a-year. Later on it absolutely was you can easily to increase this new performance up to 154 eggs of 71 g per year.
Yurlov birds may be the forefathers of some new home-bred types: Pervomai, Adler Silver and you will Zagorsk Fish chickens still have within genotype 1/2 to 3/8 regarding Yurlov inheritance.
Yurlov chickens have the better-manifested emails away from beef-variety of Western and you can video game types. Themselves try wider, deep and you may much time. The head are brief, which have large front bone, large orbital arches and purple ear canal-lobes. They have just one, rose otherwise walnut comb. New legs is long and you may solid, reddish or black from inside the the color. The fresh plumage is pretty fluffy and of some colour; dark gold, salmon and you will red-colored could be the commonest. Chicks feather really slower.
The new alive weight out of 8-week-dated chickens is 0.9-step 1.2 kg; adult hens weigh 2.6-step 3.0 and you may dicks step 3.5-cuatro.0 kilogram. Yearly manufacturing are 160-180 egg off 60-80 g. Egg-shell try red-brown. Fertility regarding egg are 91% and you may hatchability 80%. Success price of your younger was ninety% and of adults 88-93%.
ZAGORSK Salmon (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 birds got a leading production and you can viability. For example, Rhode Island Purple dicks had people mothers hence laid not less than 180 egg a-year and you may Yurlov cocks descended out of good hen and that applied 185 eggs.
When you look at the 1953 the number of Fish birds which have step 3/8 out of Yurlov bloodstream is actually 227. They certainly were bred when you look at the a closed people where household members options are accustomed combine highest laying rates, viability, eggs pounds and you will a beneficial fleshing. The live weight of one’s 90-day-dated Zagorsk Salmon cockerels is actually 1.seven kilogram; ninety.6% out-of carcasses was indeed ranked since earliest values.