Performance of crossbreds of Polish Merino dams with F1 rams: Finnsheep x Polish Merino. C. Preliminary results of reproductive performance of ewes

The investigations were carried out on the basis of the first three reproductive cycles of ewes born in the same year. The experimental flock consisted of 100 ewes progeny of Polish Merino (PM) dams and F1 rams: Finnsheep (F) x PM; there were also 32 purebred PM used as controls. The crossbred ewes, with 25 % of F genotype, had a much better reproductive performance (117 % vs. 96 % in the PM), mainly due to a much higher prolificacy (152.2 vs. 133.6 %) and improved fertility (by 3.1 %) and the percentage of lambs weaned (higher in the crossbreds by 3.4 %)

Performance of crossbreds of Polish Merino dams with F1 rams: Finnsheep x Polish Merino. B. Wool production of ewes

The investigations were carried out on wool of 180 non-selected ewes with 25 % Finnsheep (F) genotype (F x PM x PM) and 51 purebred Polish Merino (PM) ewes as controls. The shearing took place at 23 months of age, after a year’s growth of fleece. Greasy and clean wool production, length and diameter of fibres as well as wool character evaluated by subjective appraisal were recorded. Crossbred ewes had a slightly lower greasy wool production (F x PM x PM—4.0 kg, PM—4.3 kg), but a much higher rendement (60.2 and 51.2 % resp.) and a little higher clean wool yield 2.38 versus 2.20 kg. Wool of the crossbreds was longer (11.4 vs 10.5cm) and coarser (24.8 vs 23.9 pm), but had a poorer character 14.9 vs 16.0 points

Performance of crossbreds of Polish Merino dams with F1 rams: Finnsheep X Polish Merino. A. Semi-intensive fattening of ram-lambs up to 40—45 kg

The investigations were carried out to evaluate fattening ability, carcass quality and wool production of semi-intensively fattened ram lambs the progeny of F1 rams: Finnsheep (F) x Polish Merino (PM) mated to PM ewes. Two experiments were performed, on a total of 73 crossbreds and 73 purebred PM lambs. The lambs were housed together in a shed and fed farm-produced roughages, supplemented by commercially available concentrates. The crossbred lambs under semi-intensive feeding were found to have similar fattening ability as the purebreds: daily gains F x PM x PM 196 g and PM 191 g, energy consumption per 1 kg of body weight gain 26.1 and 27.0MJ, respectively. Crossbreeding did not affect slaughter value, but the commercial evaluation of live lambs was poorer in the crossbred groups. The tested crossbreds had generally better wool performance: their clean fleece weight was 1.09 kg, while that of the purebreds was 0.98 kg, rendement respectively 59.3 and 53.0 %, fibre length 6.7 and 5.4 cm, while fibre diameter was similar in the both groups

Revealing the stygobiotic and crenobiotic molluscan biodiversity hotspot in Caucasus : part I : the phylogeny of stygobiotic Sadlerianinae Szarowska, 2006 (Mollusca, Gastropoda, Hydrobiidae) from Georgia with descriptions of five new genera and twenty-one new species

The position of the southwestern Caucasus as a stygobiotic Mollusca hotspot is confirmed. Molecular data of stygobiotic gastropods revealed the diversity of subfamily Sadlerianinae Szarowska, 2006, inhabiting the subterranean environment of Georgia. In addition to the well-known endemic genera Pontohoratia Vinarski, Palatov & Glöer, 2014 and Motsametia Vinarski, Palatov & Glöer, 2014, five more genera were identified in northwestern Georgia as new to the science: Kartvelobia gen. nov., Imeretiopsis gen. nov., Caucasopsis gen. nov., Caucasogeyeria gen. nov., and Hausdorfenia gen. nov. Additionally, 21 new species were found to inhabit the studied area (Samegrelo, Imereti, Racha regions in Georgia)

Performance of crossbreds of Polish Merino dams with F1 rams: Finnsheep X Polish Merino. A. Semi-intesive fattening of ram-lambs up to 40-45 kg

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Performance of crossbreds of Polish Merino dams with F1 rams: Finnsheep X Polish Merino. B. Wool production of ewes

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Performance of crossbreds of Polish Merino dams with F1 rams: Finnsheep X Polish Merino. C. Preliminary results of reproductive performance of ewes

vokKirjasto Aj-

Mozliwosci zastosowania burakow cukrowych w zywieniu owiec

Badania miały na celu sprawdzenie możliwości stosowania w żywieniu owiec buraków cukrowych w postaci naturalnej lub zakiszonej, zamiast ziarna zbóż. Buraki cukrowe (81%) zakiszone z dodatkiem plew pszennych (9%) i poekstrakcyjnej śruty rzepakowej (10%) zawierały średnio 27,8% suchej masy, 4,7% białka ogólnego i 1,38 MJ energii netto. Badania przeprowadzano na jagniętach (tryczki i maciorki, łącznie 124 szt.) rasy merynos w wieku od 100 do 180 dnia życia oraz na owcach matkach rasy merynos karmiących jagnięta (łącznie 147 szt.). W doświadczeniu na jagniętach między grupami nie zaobserwowano zasadniczych różnic w pobieraniu paszy i składników pokarmowych oraz w przyrostach masy ciała: grupa I kontrolna - 177 g, II doświadczalna - 160 g. W żywieniu matek wprowadzenie buraków cukrowych w postaci naturalnej lub kiszonki nie wpłynęło na kształtowanie się ich masy ciała (I grupa kontrolna - 58,2, II - doświadczalna 57,1 kg), produkcję mleka (I - 0,86, II - 0,93 kg/dzień/szt.) i przyrosty masy miotu karmionych jagniąt (I - 21,9, II - 20,3 kg). Ogólnie stwierdzono, że zastosowanie buraków cukrowych w postaci naturalnej i kiszonej nie wpływa ujemnie na stan zdrowotny owiec, a pozwala na oszczędność pasz treściwych (ogółem o 22 - 23%) przy eliminacji ziarna jęczmienia.The studies aimed at checking the possibility of using sugar beets, either in natural form or as silage, instead of grain in sheep diets. Ensiled mixture of sugar beets (81%), wheat husk (9%) and rape seed oil meal (10%) contained on average 27.8% dry matter, 4.7% crude protein and 1.38 MJ net energy. The studies were carried out on Merino lambs (124 rams and ewes altogether) of the age from 100 to 180 days and on Merino ewes (147 altogether) suckling the lambs. No essential differences were observed between the groups as far as the consumption of fodder and nutrients is concerned, as well as in body weight gains: 177 g in group I (the control one) and 160 g in experimental group II. The introduction of the sugar beets, either natural or ensiled, did not affect the body weight (group I - 58.2, group II - 57.1 kg), the milk yield (I - 0.86, II - 0.93 kg/day/ewe) and the weight gains of litter lambs (I - 21.9, II - 20.3 kg). Generally it was observed that the use of sugar beets, either natural or ensiled, did not affect the condition of sheep in any negative way and allowed to economize the concentrate fodder (by 22 - 23% in total) due to elimination of barley grain from the diets