The authors also isolated transferrin, haptoglobin, and ceruloplasmin fractions. 7, and 18 months of age. Moreover, external body mass measurements were taken from these animals at the same time. In addition, absolute, daily average, and relative increases in their live weight were determined based on the weighting data and the considered blood parameters. According to the results of the present investigation, relatively high values of variability coefficients of blood acid capacity, globulin content, aldolase activity, alkalinity, and acid phosphatase were reported. The levels of total protein, albumin, globulin, and haptoglobin of the second group were 7.42%, 27.64%, 12.9%, and 9.7%, respectively, which had a significant increase, compared to those in the first group ( em P /em 0.05). The scientific research data are reflected and proved in this paper, which can serve as a specific contribution to zootechnical science Rabbit Polyclonal to OR4L1 to use the breeding-tribal work in practice and conditions of different forms of ownership. Moreover, the results of this study can be useful in the improvement of breeding-tribal work and technology of high quality, compass well as competitive and Oxibendazole ecologically clean sheep production in the conditions of maximum year-round seasonal use of foothill and foothill-steppe pastures in the south of Kazakhstan. strong class=”kwd-title” Keywords: Correlation, Erythrocytes, Genotypic variability, Heredity, Inbreed leukocytes, Selection, Wool cutting 1. Introduction Food shortages may be one of the most significant unfavorable Oxibendazole consequences of overpopulation. In order to meet the nutritional needs of livestock origin, the number of available animals cannot be increased; however, ways must be sought to increase the production per livestock unit. On the other hand, wool production is one of the economic characteristics of sheep, and a part of the annual income is usually provided from sheep breeding ( 1 ). Therefore, considering wool production in sheep selection programs along with other production characteristics can be effective in changing its average and increasing income ( 2 ). Economic return is usually of great importance in determining the significance of productive activities ( 3 ). Some studies indicate that production efficiency is usually low in the sheep breeding sector in Kazakhstan ( 4 , 5 ), and numerous programs have been presented in different countries for sheep breeding ( 6 – 10 ). In Australia ( 11 ), Turkey ( 12 ), the United States ( 13 ), and some European countries ( 14 ), open breeding herds are run for different breeds of sheep. Examination of the results of these programs indicates that acceptable genetic progress has been made for the characteristics defined in the breeding target. The breeding targets and the appropriate selection index have been defined in these programs to achieve the objectives ( 15 ). Moreover, the examination of genetic and phenotypic trends of some breeding and reproductive characteristics of herds in these stations shows that the changes are minimal and unfavorable for some characteristics ( 16 , 17 ). Sheep breeding is usually a strategic and traditional branch of livestock breeding of the Republic of Kazakhstan that plays an important role in meeting the needs of the national economy in specific raw materials and Oxibendazole food products. The results in sheep breeding of the Zhambyl region in Kazakhstan cannot be recognized as high due to the insignificant specific weight of fine and equated wool, quality indicators, and wool cutting that vary significantly by 12 months. The growth of modification variability of features does not allow a precise estimation of the genotype of animals by their phenotype, thereby decreasing the efficiency of selection work. The main reasons can be referred to as insufficient specificity of selected features on individual fine Oxibendazole wool varieties, incomplete understanding of the gradation of wool length in individual parts of the animal body, undeveloped perfect genetic methods of breeding, and inadequate study of the peculiarities of variability, inheritance, and the relationship of selected features ( 18 ). Since the variability is the genetic basis of selection, investigating regularities of the variability in productive features of animals in the thin-wool sheep breed South-Kazakh merino populations is usually of fundamental importance for theoretical and practical purposes of selection. The progress.