Published in Scientific Papers. Series D. Animal Science, Vol. LVIII
Written by Ion BUZU
The purpose of this research was to study the genealogical structure and characterization of elite lines of basic herd of sheep Moldovan Karakul type. The research has been done on Karakul sheep from Experimental Section of the National Institute of Animal Husbandry and Veterinary Medicine, Maximovca, from Anenii Noi district. The qualitative assessment of lamb's skins was performed using evaluation methods in the second day after birth, according to the available Instructions on evaluation of Karakul sheep. Elite genealogical lines were created through stringent selection of rams that where founders and followers of the line. The main objectives common to all genealogical lines were: typical exterior of the Karakul race, high body mass at all stages of assessment, according to criteria for the type requested, high milk production of rams mothers line significantly higher than the average herd. The specific objectives were: black line - excellent qualities of the skin, black colour and intense pigmentation; greyish line - medium or dark shade light greyish colour, with an excellent uniformity of staining required or appropriate; gray colour line - excellent gray colour and suitable expressed staining required. As a result of research and selection work has improved the genetics of herd type of Moldovan Karakul sheep, which resulted in forming a genealogical structure of three elite lines, differentiated by colour: black line Corpolent 7094, greyish line Delicat 2049 and gray line Buhar 7001. Each of these lines have common characteristics of selected characters, mainly, on the development of significant weight of the rams at birth 5.5 to 6.8 kg, at 6 months 40-47 kg and at 18 months 70-83 kg, an increased milk production of mothers founders and followers within 80-180 kg per lactation, the weight of lambs was increased in descendants elite and class I (80.8 to 86.8%) and also some specific characteristics of curls, particularly related to colour and colouring follicle sheath, such as blue marble - at the greyish colour, and gold, bronze and diamonds - at the gray colour. The proportion af the animals of each elite lines is quite significant genealogical distributed in the structure of the herd (20.5 to 37.4 %), which provides over a relatively long period, an increase effect in independent pure breeding- this way reducing the high risk of inbreeding.
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genealogical lines
