Ladies reach sexual maturity at the 162 days of age

Black colored Speckled Australorps are bred to possess egg development. Plumage is actually black that have small light spots; ear-lobes is actually yellow; brush is unmarried. Down is actually white for the datingmentor.org/myladyboydate-review/ colour; shanks is actually light, a little pigmented and never long.

73 as well as cockerels 0.88 kilogram. The brand new real time lbs of 150-day-dated pullets are step one.82 and this away from adult hens 2.2 kilogram. The fresh new live lbs off cocks is actually 2.6 kg.

The typical yearly creation of Black colored Speckled Australorps is 200 eggs weigh 55 grams. Eggs shells is actually cream-coloured. Fertility regarding eggs is actually 95%, hatchability 80-85%. Endurance rates of the younger doing 150 months are 95%; compared to grownups is ninety%.

This new real time pounds out of 56-day-dated pullets try 0

The fresh wild birds are modified to help you power supply remaining possibly personally otherwise inside communities. Another function is a premier effectiveness pullorum disease. He could be extremely important due to the fact companies of the recessive sp gene, which is guilty of the light colour of the fresh plumage and you can a much better look of carcasses. Advent of which gene into communities getting the principal Age gene manage subscribe the large usage because of the chicken business.

RUSSIAN Light (Russkaya belaya)

Which breed is actually introduced while in the 1929-53 by mating Light Leghorn boys which have people out of local populations, followed by inter se reproduction out-of crosses with assorted grades out-of Leghorn inheritance. The latest crossbreeding inside it Leghorns of various resource – Danish, English, Western – for each using its individual production and exterior has actually. Choice met with the function of improving egg development, stability, growth rate and real time weight.

Before 1965 Russian Whites was in fact the primary eggs-laying birds on the USSR. The average annual production is actually 175-190 eggs for each and every coating; egg pounds try 57-60 g. In breeding condition farms the newest egg production of Russian Whites is actually 220-230 per year. But not, significantly less than commercial standards Russian Whites cannot take on brought in lines and crosses out-of Light Leghorns. It dropped trailing by 40-fifty egg per year and by to dos.5-step three.0 g from inside the egg pounds.

This is why the inventory away from Russian Whites, which in 1975 was 30.eight million, got diminished to help you cuatro.4 billion by 1980. He’s still utilized in significant number when you look at the Turkmenia, Uzbekistan and Azerbaijan.

At present, breeding run Russian White birds is accomplished inside Yasnaya Polyana breeding farm in the Stavropol area. When you look at the very first phase (1967-69), breeding is actually according to choice and you will moms and dads have been evaluated by the its daughters’ production. Inside 1970 the fresh new breeding system try transformed to creation of inbred contours (letter = 40) and you can a control society. The main type of inbreeding was between paternal 1 / 2 of-sibs, seldom ranging from complete sibs. The new birds hatched from inside the 1973 got a keen inbreeding coefficient (Wright) from almost 37%. The common production of the new half a dozen ideal inbred outlines in 475 months is two hundred-205 eggs weigh 54-56 g. The brand new crosses of these traces had increased design – 211-236 egg annually.

Birds in the inhabitants are white into the pounds and create brief egg. Their plumage are light; surface and you may shanks are red; he has got one brush.

This new real time weight regarding 8-week-dated pullets are 0.55 kg; that cockerels are 0.56 kg. Adult hens weighing step one.6 kg, dicks dos.0 kilogram. Fertility off eggs reaches 93%; hatchability are 82%; success speed of young and people was 95 and you will ninety-five% respectively. Egg development on initial and intermediate inhabitants throughout the 70 months of every day life is 182 and you may 206 egg out of 55 grams.

Of a few attention ‘s the populace off Russian Light chickens during the the brand new All the-Commitment Research Institute from Farm Animal Reproduction and you will Family genes. It absolutely was developed by choice for resistance to subnormal heat during the the original times of existence and also for large egg manufacturing. Chickens try without leukosis while having a premier effectiveness Marek’s problem and you will carcinomas away from body organs. Chicks are raised at the temperatures which can be 8-ten below typical. Back in 1984 this society numbered five hundred lead.

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