The newest intercourse chromosome off Australorps is replaced by the chromosome out-of Leghorns
Progressive poultry development regarding USSR try developing on basis off industrial tech as well as 2-means expertise, i.age. egg and chicken production.
Regarding socialized sector the average yearly eggs produce away from hens increased out-of 130 inside 1964 so you’re able to 226 back in 1984. In identical period the complete eggs design increased away from 29 in order to 73 thousand million. Numbers of breeding chickens have been 230 912 000 within the 1980 given that up escort girls in Montgomery AL against 174 758 one hundred thousand inside the 1975 – a rise off 29%.
To own egg creation really birds try around three- otherwise five-range crosses centered on brought in grandparental traces of one’s after the: Razor – 288, 292, 444, Evribreed -Highsex White, Highsex Brown while others. In same time the newest numbers of egg-form of Russian White birds diminished – they were six.8-fold smaller inside 1980 compared with 1975.
thirteen. Domestic FOWL
To have meats creation the present brings are definitely the five-range crosses Broiler-six and Broiler-compact-8 that happen to be formed of Dutch lines of your own Evribreed business. Brand new live lbs away from eight-week-old broilers are step one.eight kg, that have 2.8 kilogram off provide being consumed for each and every kilogram out of obtain.
Overall fowl animal meat manufacturing was 2.dos billion tonnes in 1984, i.e. three times up to inside the 1965 (700 100 t). Your food Programme of one’s USSR envisages production of step three.4-3.six m t of fowl animal meat inside 1990. Special attention is being paid back on encouragement out-of fowl reproduction towards personal plots away from cumulative producers.
Yet not, industrialization of chicken breeding enjoys lead to a serious reduced how many breeds. The majority of them have forfeit its energetic really worth and are also maintained simply while the a genetic money within the search centers by novice breeders.
It chapter identifies your local, old and the brand new types and you may populations from the Soviet Union (discover Dining table thirteen.1). The bulk of them are dual-objective types having a decreased production that are not employed by brand new chicken world. not, it have of several beneficial physical services – effectiveness situation and evident change off environment temperatures; higher reproductive rate not as much as industrial requirements; high meat palatability.
Brand new outlines which can be popular from the poultry industry badly you need hereditary assortment on the significantly more than characteristics. Based on local and unusual communities from the Soviet Commitment the newest reproduce groups and you will extremely effective lines and you can crosses is becoming build being adjusted on the kind of climatic areas in the united kingdom.
Eggs Types Banned-AND-SPECKLED LEGHORN (Polosato-pestraya leggorn)
The brand new synthetic population is actually produced while in the 1976-84 in the Ail-Union Search Institute regarding Farm Animal Reproduction and you will Family genes from the crossing White Leghorn men of C distinctive line of get across Shaver 288 and you will hens from an experimental line of Black Speckled Australorps. The brand new genetics accountable for along with off Leghorn plumage – We, Sp, w – in addition to their alleles into the Australorps – we, sp, W – were utilized just like the indicators which will make hereditary range about the newest range.
The original specimens (n=30) out of chickens homozygous to possess along with family genes were made in 1978 by the inter se breeding out-of white hybrids (F2) having step 3/cuatro off Leghorn inheritance. They had a pronounced dose effect of gene B about Leghorn gender chromosome. A man chickens (BB spsp) got white plumage which have lines out-of barring together with females chickens (B-spsp) have been banned-and-mottled that have light down.
In the 1st phase from reproduction new stock regarding Prohibited-and-Speckled Leghorns designated simply two hundred-250 lead. The majority of her or him was basically heterozygotes (Ii Spsp and you can ii Spsp) (n=l 500) that have yearly egg production of 230 egg consider 56-57 grams. This was followed by rigid solutions among females (50% intensity) to possess eggs pounds, conformation and you can maturity of men (options power 10%) in the form of crosses anywhere between to 10 contours. Among male birds part of the alternatives standards was indeed conformation, lbs and you may quality of egg of their women mothers, and also to a significantly reduced the total amount the newest eggs production of ladies mothers.