Czech Journal of Animal Science, 2013 (vol. 58), issue 6
Evaluating the effects of six essential oils on fermentation and biohydrogenation in in vitro rumen batch culturesOriginal Paper
M. Gunal, A. Ishlak, A.A. Abughazaleh
Czech J. Anim. Sci., 2013, 58(6):243-252 | DOI: 10.17221/6822-CJAS 
The effects of six essential oils (EO) on rumen fermentation and biohydrogenation were evaluated under in vitro conditions. Three doses (125, 250, and 500 mg/l) of EO were evaluated using in vitro 24 h batch culture of rumen fluid with a 55 : 45 forage : concentrate diet. Treatments were control (CON), control with Siberian fir needle oil (FNO), citronella oil (CTO), rosemary oil (RMO), sage oil (SAO), white thyme oil (WTO), and clove oil (CLO). Treatments were incubated in triplicate in 125 ml flasks containing 500 mg of finely ground total mixed ration (TMR), 25 mg of soybean oil, 10 ml of the strained ruminal fluid, 40 ml of media,...
Effects of dietary level of selenium and grain on digestive metabolism in lambsOriginal Paper
O.E. Del Razo-Rodriguez, J.E. Ramirez-Bribiesca, R. Lopez-Arellano, A.L. Revilla-Vazquez, S.S. Gonzalez-Munoz, M.A. Cobos-Peralta, L.M. Hernandez-Calva, L.R. McDowell
Czech J. Anim. Sci., 2013, 58(6):253-261 | DOI: 10.17221/6823-CJAS
The objective was to evaluate the effect of different levels of selenium with two levels of grain corn in the diets on ruminal, postruminal, and total tract digestion of nutrients, ruminal fermentation characteristics, and selenium balance in lambs. A split-plot design was used in four periods with repeated Latin square using eight Suffolk × Dorset male lambs with four levels of selenium (sodium selenite, Na2SeO3), without adding selenium, 0.3, 0.6, and 0.9 mg of selenium/kg dry matter (DM) with 70 and 50% of corn grain in the diet. The four selenium levels affected organic matter as follows: starch, neutral detergent fibre, nitrogen...
Association of novel polymorphisms in the bovine myocyte enhancer factor 2D (MEF2D) gene with carcass traits of Polish Holstein-Friesian cattleOriginal Paper
E. Juszczuk-Kubiak, K. Wicińska, J. Oprz±dek
Czech J. Anim. Sci., 2013, 58(6):262-269 | DOI: 10.17221/6824-CJAS
In the present study the polymorphism of the myocyte enhancer factor 2D (MEF2D) gene was analyzed as a genetic marker candidate for carcass traits in Polish Holstein-Friesian cattle. Four novel single nucleotide polymorphisms (SNPs): HQ692911:g.93C>T in exon 8, JX088659:g.69C>T in intron 8, JX0692914:g.47C>T in intron 9 as well as JX088658:g.100G>A in the 3'flanking region were identified by DNA sequencing. By applying the PCR-RFLP method, the SNPs (g.93C>T/HaeIII and g.47C>T/Tsp45I) were genotyped in 401 Polish Holstein-Friesian bulls and their association with carcass traits was analyzed. Statistical analysis...
Effect of dietary phenylpropanoid glycoside-based natural extracts on blood parameters and productive performance in intensively-reared young haresOriginal Paper
D. Casamassima, M. Palazzo, F. Vizzarri, M. Cinone, C. Corino
Czech J. Anim. Sci., 2013, 58(6):270-278 | DOI: 10.17221/6825-CJAS
Two different doses of a dietary verbascoside-based supplement were evaluated on various blood parameters and on productive performance in young weaned hares reared intensively from 28 to 90 days of age. The study lasted for 62 days and it was conducted on 210 young hares divided into three homogeneous groups of 70 animals each, consisting of a control group and two experimental groups. Each group received the dietary supplement in the feed, titrated to 0.5% verbascoside, 1 kg/t of concentrate (LVB group) and 2 kg/t of concentrate (HVB group). The experimental reliefs included the measurement of blood parameters such as triglycerides, total cholesterol,...
Effect of dietary linseed supplementation on the performance, meat quality, and fatty acid profile of pigsOriginal Paper
M. Okrouhlá, R. Stupka, J. Čítek, M. ©prysl, L. Brzobohatý
Czech J. Anim. Sci., 2013, 58(6):279-288 | DOI: 10.17221/6826-CJAS
The effect of a dietary linseed (Linum usitatissimum L.) supplement on the traits of fattening, carcass value, physical and chemical characteristics of meat quality, and the fatty acid composition of pig meat was evaluated. Seventy-two hybrids (Czech Large White (paternal) × (Czech Large White (maternal) × Czech Landrace)) were divided into four treatments according to diet (0 and 150 g/kg linseed) and sex (barrows and gilts). A significantly (P = 0.050) higher feed conversion value was ascertained in barrows fed with linseed compared with the other three groups. Most of the physical and chemical characteristics...