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The adaptability of sheep to harsh environmental conditions makes it possible to obtain valuable products using poor fallow land. However, this requires the selection of an appropriate genotype and stocking density. Both grazing and a diet enriched with vegetable and fish fats increase the content of PUFA n-3 and CLA fatty acids, which are beneficial to human health, in the lipid fraction of milk...
The study was conducted on 19 samples of wool of Żelaźnieńska Sheep and 28 samples of wool of Corriedale Sheep. The thickness of fi bre and rendement were examined. The color of wool were measured by colorimetric technique. Basis of studies found a wider range of thicknes fi bre of Corridale Sheep and narrow range of thickness fi bre of Żelaźnieńska Sheep compared with the standards. Particular importance...
Research was carried out on 432 Polish Lowland Sheep (405 ♀ and 27♂) of three varieties: Corriedale, Żelaźnieńska Sheep and Polish Lowland Sheep of Podlasie region. All animals were subjected to gene identifi cation factor insulin – IGF-1, in the assessment of alleles C and T. In conclusion it should be noted that in the three examined varieties of Polish Lowland Sheep showed no polymorphism in exon...
The research was conducted on 106 Polish Merino lambs in 2010–2013 and 221 Berrichon du Cher lambs in 2008–2013 (except 2009). The research took place in GRH Żydowo near Gniezno. Animal muscularity was tested by USG technique on mld muscle cross section. Based on obtained results, the effect of type of birth, sex, father origin and class of scrapie resistance and double-factor interactions were statistically...
Badania przeprowadzono na 1805 zwierzętach (1165 ♀ i 640 ♂): muflonie europejskim (Ovis aries musimon), jego mieszańcach z wrzosówką, owcach czterech ras charakteryzujących się okrywą wełnistą mieszaną (wrzosówka, świniarka, polska owca górska odmiany białej i odmiany barwnej) i merynosie polskim. Wszystkie zwierzęta poddane były identyfikacji genu brązowego umaszczenia (TYRP1), w zakresie oceny występowania...
Badaniami objęto 5 stad merynosa polskiego starego typu z terenu woj. mazowieckiego, zakwalifikowanych do programu ochrony zasobów genetycznych tej rasy. Maciorki i tryki były w wieku od 2 do 11 lat (łącznie 181 osobników, w tym 12 tryków i 169 maciorek), utrzymywano je systemem alkierzowym, żywiono paszami wyprodukowanymi w gospodarstwie. Od owiec pobrano krew (z żyły jarzmowej) do probówek zawierających...
Celem badań była ocena zawartości wybranych składników chemicznych (woda, białko, kolagen, tłuszcz) w mięsie jagnięcym za pomocą analizatora FoodScan. Otrzymane wyniki porównano z oznaczeniami uzyskanymi metodami referencyjnymi w laboratoriach akredytowanych. Badaniami objęto 110 jagniąt (tryczków), o masie ciała ok. 40 kg, należących do 4 grup genotypowych: dwóch ras rodzimych (wrzosówka i żelaźnieńska)...
Research was carried out on 1,684 sheep (1,093 F and 591 M) originating from European Mouflon (Ovis aries musimon), its hybrids with Polish heat sheep and four sheep breeds that are characterized by a mixed wool compared to Polish Merino. All animals were subjected to gene identification factor insulin-IGF-1, in the assessment of allele C and T. In conclusion it should be noted that in the 7 examined...
The research was carried out in two companies of the Agricultural Property Agency in Żołędnica and Żydowo situated in the Wielkopolskie voivodeship. The performance traits were estimated on flocks of Berrichone, Suffolk and Charolaise - the sheep of meat breeds. In respect of reproduction traits, their low values were observed, especially in flock of Suffolk, what indicates the need to run breeding...
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