Lambs wool production and qualities from the progeny of 2 Merino and 2 Damara rams mated to Merino ewes were compared. The crossbred lambs produced about half the amount of wool and had high fibre diameter variation and medullated fibre components. Merino lambs wool was contaminated with pigmented and medullated fibres apparently transferred from continual exposure to the Damara crossbred lambs...

Abstract The scientific article presents the results of experiment on study qualitative indicators beef obtained from crossbreeding cattle breeds in conditions Volgograd agricultural enterprise JSC “Berdievsky elevator”. Obtained crossbred steers at age 9 months were divided into 4 groups: I experimental - ½ a cross (Hereford х Russian Komolaya), II (Kazakh Whitehead Kalmykian), III (Kalmykian ...

The objective of this study was to evaluate the relationship between polymorphism at the MnlI site of MTNR1A gene and production traits of Shal and Romanov crossbreeding. The crossbreeding between Shal and Romanov was done on 600 Shal ewes. For this reason, Shal ewes were laparoscopically and artificially inseminated with the semen of Romanov breed. For the preparation of genomic DNA, a total o...