The fresh new real time lbs of 8-week-dated birds try 0.8 kg; mature hens weighing 2.dos-2.5 and you can cocks step 3.5-cuatro.5 kg. Egg-shell is brownish. Fertility out-of eggs are 95% and you may hatchability 80-85%. Death of your own more youthful are https://datingmentor.org/escort/fort-collins/ 5-7% and of grownups 5%. The common production try 180-200 eggs annually; egg weight are 58-60 grams. The production of champions try 270-290 egg.
Crossbred progeny from Yerevan hens and you may Light Leghorn cocks build 230 eggs per year weighing 60 grams. This new alive lbs regarding adult levels try step one.8-2.0 kilogram. Formal egg outlines from Yerevan hens can be used just like the ladies moms and dads within the crosses which have men traces away from Light Leghorns.
Formal twin-objective (beef and you may eggs) contours off Yerevan chickens are an invaluable hereditary funding on creation of the latest synthetic meats-and-egg contours from broiler crosses.
YURLOV (Yurlovskaya)
So it breed was made on Main Black-Earth area of your Russian Federation from inside the Orlov, Kursk and you can Voronezh countries, in the shape of antique choice. M.F. Ivanov is actually of your advice the Yurlov reproduce originated in crosses regarding local hens which have assaulting dicks and you may Brahma people.
Brand new breed was molded by extended gang of cocks with good strong and a lot of time-drawn-away crow. It actually was believed that possibilities on the charm and duration of crowing do help establish a strong constitution having powerful looks and you will wide breast.
While in the 1941-forty five the bulk of the fresh Yurlov people was lost. Inside the 1948, the new Most of the-Union Chicken Reproduction Institute lead twenty-seven specimens of Goryaninovka community in Kursk area. From the 1951 this new gene conservation inhabitants got increased to 2 hundred direct. The average performance in this head is 124 egg a year. Later it actually was possible to boost the new overall performance up to 154 eggs out-of 71 g annually.
Yurlov chickens is the forefathers of some new house-bred types: Pervomai, Adler Silver and you will Zagorsk Fish chickens continue to have inside their genotype 1/2-3/8 away from Yurlov genetics.
Yurlov birds have the well-manifested emails away from meats-variety of Far-eastern and you may games types. Their body try wider, deep and you will long. Your face is actually small, with broad front bone, higher orbital arches and you will purple ear canal-lobes. They have a single, rose otherwise walnut comb. This new foot is much time and strong, yellow or black within the colour. The new plumage is rather fluffy and of individuals colours; ebony gold, salmon and you can red-colored certainly are the commonest. Girls feather really more sluggish.
The latest real time lbs regarding 8-week-old chickens is actually 0.9-1.dos kg; adult hens consider dos.6-3.0 and you will dicks step three.5-cuatro.0 kilogram. Yearly production is 160-180 eggs regarding sixty-80 grams. Egg-shell try red-brown. Virility out-of egg is actually 91% and you will hatchability 80%. Survival rate of the young was ninety% and of people 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 origin wild birds got a high production and stability. Including, Rhode Isle Purple dicks had female parents and that placed not less than 180 eggs per year and you can Yurlov cocks originated out-of a hen and this placed 185 egg.
When you look at the 1953 the number of Salmon chickens which have 3/8 off Yurlov bloodstream is actually 227. These people were bred in the a sealed inhabitants in which relatives selection is regularly merge high installing rates, viability, egg lbs and you can a great fleshing. The brand new live lbs of 90-day-old Zagorsk Salmon cockerels try step 1.7 kg; 90.6% out-of carcasses was rated given that basic values.