Influence of selection of sheep on change amino-acid structure of wool at thoroughbred and crossbred offsprings
Data of biochemical structure of wool of thorough-bred and crossbred joung growth of sheep received from ewes of different intrapedigree types variates more considerably to 12-month age and apparently in certain degree depends on a genotype of an ewe. The distinctions in the amino-acid structure of protein of wool at this age are more expressed at offspring of ewes of wool-meat type than at offspring of meat-wool ewes. The higher content of a cystine in a wool keratine which plays an important role in growth of wool fibres is observed at the young ewes received from wool-meat type of Precoce in comparison with meat-wool type. The difference between analogues at pure-breeding has made 1,96 percentage point (Р≥0,95), with 1,51 percentage point and 1,52 per-centage point (Р≥0,95) at crossbreeding with sires of Kuibyshev and Romney-Marsh breeds respectively. To improve the thin and crossbred wool it is expedient to apply selection of ewes taking into account their intrapedigree type.