Latvijas tumšgalves šķirnes teķu pārbaudes rezultāti pēc pēcnācēju kvalitātes 2018. gadā
2019
Vecvagars, J., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Agriculture. Inst. of Animal Sciences | Kairisa, D., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Agriculture. Inst. of Animal Sciences
The quantity of Latvian Dark-Headed breed sheep herds has increased in recent years, so demand for quality breeding rams is increasing. Testing of breeding rams according to the quality of the offspring was conducted in the ram control fattening station “Klimpas”, the Latvian Sheep Breeders Association, in Jeri Parish, Rujiena Municipality. The study evaluated 19 breeding rams from seven approved Latvian Dark-Headed ram lines. Accordingly, breeding rams by Scrapie genotype R1 genotype was for seven rams, R2 was for nine rams, and R3 genotype was for three rams. The Edzins 0365, Skaris 0008 and Irbis 0125 lines breeding rams obtained 2.1–2.2 lambs in lambing per ewe on average. The highest birth weight was 4.56±0.358 kg for Simanis 0195 line and 4.30±0.174 kg for Edzins 0365 line lambs. The fattening period was carried out for an average period of 70 days; during fattening lambs achieved 350.2±7.85 g dE−1 of daily body gain on average. During the fattening period the highest daily weight gain was obtained by Simanis 0195 line ram progeny, which was 407.8±21.43 g dE−1 on average, and the lowest daily weight gain was obtained by Edzins 0365 line lambs, it was 324.5±16.14 g dE−1 on average. The study concluded that the breeding rams of the lines Irbis 0125, Edzins 0365 and Skaris 0008 were suitable according to the number of lambs in the litter. The best results for lamb weight gain were recorded for Irbis 0125 and Simanis 0195 lines sires. The body mass of lambs significantly increased due to the development of muscles in meat (r sub(p)=0.44).
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