The fresh sex chromosome regarding Australorps is actually changed by the chromosome out of Leghorns

The fresh sex chromosome regarding Australorps is actually changed by the chromosome out of Leghorns

Progressive poultry development regarding USSR is actually development into the base away from industrial tech as well as 2-method specialty, we.age. eggs and meat creation.

From the socialized industry the common annual eggs give regarding hens improved from 130 in the 1964 to 226 in 1984. In the same several months the full egg creation increased away from 30 in order to 73 thousand million. Quantities of reproduction birds have been 230 912 100 inside the 1980 since facing 174 758 000 for the 1975 – a rise out of 31%.

For egg design extremely birds is actually about three- otherwise five-line crosses based on brought in grandparental outlines of the geek2geek review following the: Razor – 288, 292, 444, Evribreed -Highsex Light, Highsex Brownish while others. Inside the same day brand new quantities of egg-type of Russian White birds diminished – these were six.8-flex shorter from inside the 1980 compared to 1975.

thirteen. Residential FOWL

Getting animal meat development the prevailing holds would be the five-line crosses Broiler-six and you can Broiler-compact-8 that happen to be molded regarding Dutch contours of your Evribreed firm. The real time pounds out-of 7-week-old broilers try 1.7 kg, having 2.8 kilogram off provide getting ate for every single kg regarding get.

Full fowl meats development try dos.2 mil tonnes back in 1984, i.age. 3 times around inside the 1965 (700 100 t). Your food Plan of your USSR envisages production of 3.4-step 3.six meters t of fowl meats from inside the 1990. Extra attention is being reduced to your support out of fowl reproduction to your personal plots of land from cumulative producers.

not, industrialization from poultry breeding features resulted in a drastic loss of the number of breeds. Most of them have forfeit the energetic worth consequently they are handled simply as the a genetic capital in research centres and by amateur breeders.

This part describes your local, dated and the latest types and you will communities regarding the Soviet Partnership (look for Desk 13.1). The majority of are usually dual-objective breeds with the lowest yields which are not utilized by this new chicken business. However, it enjoys of several rewarding physical functions – resistance to problem and you can clear alter away from environmental temperature; higher reproductive rates less than industrial standards; high chicken palatability.

The new contours being widely used in the chicken world defectively you prefer genetic assortment regarding more than properties. On the basis of local and you may rare populations on Soviet Commitment the latest reproduce communities and you can extremely energetic outlines and you can crosses is actually are setup being adjusted to your version of climatic areas in the country.

Eggs Types Prohibited-AND-SPECKLED LEGHORN (Polosato-pestraya leggorn)

The new synthetic society try lead throughout the 1976-84 in the Ail-Connection Look Institute off Farm Creature Breeding and Genetics because of the crossing Light Leghorn people of C collection of mix Razor 288 and you will hens off an experimental distinctive line of Black Speckled Australorps. The latest genes guilty of the colour out of Leghorn plumage – I, Sp, w – in addition to their alleles when you look at the Australorps – i, sp, W – were utilized because markers to create genetic assortment regarding new line.

The original specimens (n=30) of birds homozygous getting along with family genes was produced in 1978 of the inter se reproduction away from light hybrids (F2) that have step 3/4 out-of Leghorn genetics. They had a pronounced dose aftereffect of gene B about Leghorn intercourse chromosome. A man chickens (BB spsp) got white plumage which have contours regarding barring in addition to women birds (B-spsp) was prohibited-and-mottled which have white down.

In the 1st phase out of reproduction the latest inventory of Barred-and-Speckled Leghorns designated merely 200-250 lead. The majority of them was heterozygotes (Ii Spsp and you may ii Spsp) (n=l five-hundred) that have yearly egg production of 230 eggs weigh 56-57 g. It was followed by rigid possibilities among females (50% intensity) getting egg lbs, conformation and you may readiness of men (choice intensity 10%) as crosses anywhere between around ten contours. One of men birds part of the options conditions had been conformation, weight and you will top-notch eggs of its lady parents, in order to a much lower the amount the newest egg creation of girls mothers.

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