This new gender chromosome from Australorps was replaced from the chromosome regarding Leghorns

This new gender chromosome from Australorps was replaced from the chromosome regarding Leghorns

Modern poultry manufacturing from the USSR is developing on the foundation out-of commercial innovation as well as 2-way specialty, i.e. egg and you can beef development.

From the socialized sector the average annual egg yield regarding hens increased out of 130 during the 1964 to help you 226 back in 1984 Norfolk backpage escort. In identical months the complete egg development grew off 30 to help you 73 thousand mil. Amounts of reproduction chickens had been 230 912 000 into the 1980 since the up against 174 758 000 from inside the 1975 – a growth out-of 29%.

To have egg production really birds is around three- otherwise five-range crosses predicated on imported grandparental contours of adopting the: Razor – 288, 292, 444, Evribreed -Highsex Light, Highsex Brownish while others. In the same day the fresh amounts of egg-style of Russian White chickens diminished – these people were six.8-flex less into the 1980 weighed against 1975.

thirteen. Domestic FOWL

To own animal meat manufacturing the current stocks may be the five-line crosses Broiler-6 and Broiler-compact-8 that happen to be molded off Dutch lines of the Evribreed enterprise. The live weight of seven-week-old broilers try step 1.seven kilogram, having 2.8 kg from supply becoming ate for each and every kg off obtain.

Total fowl meats production is 2.2 mil tonnes in 1984, we.elizabeth. 3 times as much as inside the 1965 (700 one hundred thousand t). Your meal Plan of one’s USSR envisages creation of step 3.4-step 3.six m t out-of fowl meat during the 1990. Attention is paid into the support from fowl breeding toward individual plots off cumulative producers.

Although not, industrialization regarding poultry reproduction have lead to a drastic losing just how many breeds. Most of them have lost the energetic worthy of and are generally maintained merely due to the fact a genetic capital for the browse centres and also by newbie breeders.

That it section identifies your regional, dated and you can this new types and you may populations regarding the Soviet Commitment (discover Table thirteen.1). The majority of are usually dual-mission types which have a decreased efficiency that aren’t used by the fresh poultry world. However, they has actually of a lot rewarding biological characteristics – effectiveness condition and you can evident alter regarding ecological heat; large reproductive rate under commercial requirements; high chicken palatability.

The lines being widely used on the chicken world poorly you would like hereditary diversity on over properties. On the basis of local and uncommon communities in the Soviet Commitment the latest reproduce communities and you can extremely active traces and you can crosses was being created being adjusted towards the sorts of climatic areas in the country.

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

The man-made society is actually brought throughout 1976-84 throughout the Ail-Partnership Lookup Institute of Farm Animal Breeding and you can Genes by the crossing Light Leghorn people of the C type of get across Razor 288 and you will hens regarding a fresh collection of Black Speckled Australorps. Brand new genetics accountable for colour of Leghorn plumage – We, Sp, w – and their alleles when you look at the Australorps – we, sp, W – were used due to the fact markers which will make genetic diversity throughout the the fresh new line.

The first specimens (n=30) regarding birds homozygous having colour family genes was produced in 1978 of the inter se breeding out-of light hybrids (F2) that have 3/cuatro away from Leghorn inheritance. They had a noticable serving aftereffect of gene B on the Leghorn intercourse chromosome. The male birds (BB spsp) got white plumage with traces from barring and also the ladies birds (B-spsp) have been prohibited-and-mottled that have light off.

In the 1st stage of breeding new inventory out of Barred-and-Speckled Leghorns numbered only 2 hundred-250 head. The bulk of him or her were heterozygotes (Ii Spsp and ii Spsp) (n=l five-hundred) having yearly egg production of 230 egg consider 56-57 grams. It was with rigorous solutions amongst females (50% intensity) to own eggs pounds, conformation and you may readiness of males (selection intensity ten%) as crosses ranging from doing ten contours. Certainly one of men chickens a portion of the options criteria had been conformation, weight and you may quality of egg of its female parents, and a much lesser the total amount the fresh new egg creation of female moms and dads.

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