This new sex chromosome off Australorps is actually changed by chromosome regarding Leghorns

Modern poultry production about USSR try developing towards the basis out of industrial technologies and two-ways specialty, i.e. egg and you will chicken development.

Regarding socialized market the average annual egg yield regarding hens enhanced of 130 inside the 1964 so you can 226 in 1984. In identical months the full egg design grew out of 30 so you’re able to 73 thousand million. Quantities of breeding chickens had been 230 912 100000 inside 1980 while the against 174 758 100000 from inside the 1975 – a rise out of 30%.

For eggs design really chickens was about three- otherwise four-range crosses according to brought in grandparental traces of your following: Razor – 288, 292, 444, Evribreed -Highsex Light, Highsex Brownish although some. Into the same go out this new quantities of egg-sort of Russian White birds diminished – these were 6.8-fold quicker from inside the 1980 online hookup Oshawa compared to 1975.

thirteen. Domestic FOWL

Getting chicken design the prevailing holds will be the four-line crosses Broiler-6 and you will Broiler-compact-8 which have been designed out-of Dutch outlines of the Evribreed agency. The fresh real time lbs regarding seven-week-old broilers are step one.7 kilogram, which have 2.8 kg from offer becoming consumed for every single kg away from get.

Total fowl chicken production is 2.dos million tonnes in 1984, we.age. three times to for the 1965 (700 100 t). Meals Programme of your own USSR envisages creation of step 3.4-step 3.six meters t from fowl meats from inside the 1990. Attention is being paid towards the reassurance out of fowl reproduction to your individual plots of land out of cumulative growers.

Although not, industrialization away from poultry breeding has actually led to a drastic loss of the number of types. Nearly all of them have lost its effective value and therefore are handled just due to the fact a hereditary financing for the lookup centers and by inexperienced breeders.

Which chapter identifies neighborhood, dated and the new types and you may communities regarding Soviet Connection (discover Dining table 13.1). The majority of them are twin-goal types with a minimal efficiency that are not employed by the brand new chicken globe. However, they provides of many worthwhile physiological attributes – resistance to problem and you will evident changes out of environmental temperature; higher reproductive price under industrial standards; highest beef palatability.

The fresh new lines being popular in the chicken world poorly you want hereditary variety on over qualities. On such basis as regional and you can rare populations on the Soviet Relationship the breed communities and extremely active contours and you may crosses try being build which can be adapted to your type of climatic zones in the nation.

Egg Breeds Barred-AND-SPECKLED LEGHORN (Polosato-pestraya leggorn)

The latest artificial society try introduced during 1976-84 regarding the Ail-Union Search Institute away from Farm Creature Reproduction and you will Genetics by crossing White Leghorn guys of your own C type of cross Razor 288 and you may hens regarding a fresh type of Black Speckled Australorps. The fresh new genetics guilty of the color from Leghorn plumage – I, Sp, w – as well as their alleles for the Australorps – we, sp, W – were used because the indicators to help make hereditary diversity regarding the the brand new line.

The initial specimens (n=30) regarding birds homozygous to own the colour genes was made in 1978 of the inter se reproduction regarding white hybrids (F2) that have 3/cuatro regarding Leghorn inheritance. They had a noticable dose aftereffect of gene B on the Leghorn intercourse chromosome. A man birds (BB spsp) had light plumage having lines regarding barring and also the ladies birds (B-spsp) have been barred-and-mottled which have white down.

In the first phase out-of breeding the fresh new stock off Barred-and-Speckled Leghorns numbered just 200-250 direct. The majority of them was basically heterozygotes (Ii Spsp and you can ii Spsp) (n=l five-hundred) with annual eggs creation of 230 eggs weigh 56-57 g. This is followed by tight solutions amongst females (50% intensity) to own egg lbs, conformation and you may maturity of males (choice intensity ten%) by means of crosses between up to 10 contours. Among men chickens part of the choices standards have been conformation, lbs and you will quality of eggs of its ladies mothers, also to a much smaller the quantity the new eggs creation of ladies mothers.

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