Czech Journal of Animal Science, 2017 (vol. 62), issue 11

Supplementation of dairy cows with docosahexaenoic acid did not affect ovarian activityOriginal Paper

Martin Vlcek, Michaela Andrlikova, Olimpia Barbato, Vladislav Bina, Maurice P. Boland, Radovan Dolezel, Miloslava Lopatarova, Svatopluk Cech

Czech J. Anim. Sci., 2017, 62(11):457-465 | DOI: 10.17221/44/2017-CJAS  

The effect of docosahexaenoic acid (DHA) on ovarian activity of dairy cows was determined. Experimental cows (n = 25) were fed a total mixed ration supplemented daily with 100 g/cow of an algae product All-G-Rich (Alltech, Ireland) containing 10% DHA divided into 2 doses for 52 days. Determination of DHA from milk samples taken from all cows was performed before the All-G-Rich supplementation (on Day 0, D0), and on D21 and D42 of algae supplementation. Cows were synchronized to be in oestrus on D21 and D42 of the experimental period. Monitoring of ovarian activity was performed by transrectal ultrasonography. Examinations were performed at...

Colostrum and milk characteristics in Murgese breed maresOriginal Paper

Carlo Cosentino, Giovanni Notarnicola, Rosanna Paolino, Carmine D'Adamo, Cristiana Labella, Mauro Musto, Pierangelo Freschi

Czech J. Anim. Sci., 2017, 62(11):466-472 | DOI: 10.17221/39/2017-CJAS  

The physicochemical composition and antioxidant activity of Murgese mare's colostrum and milk during lactation were analyzed. Colostrum and milk samples from 14 lactating mares were collected on the 1st and 2nd day after foaling, and then at 15, 90, and 150 days postpartum. The results showed that the values of most of the chemical parameters in colostrum were higher. During lactation, the content of proteins, fat, dry matter as well as pH values increased, while lactose and lysozyme content decreased. The total antioxidant capacity (TAC) was evaluated by 2,2'-azinobis (3-ethylbenzthiazoline-6-acid) (ABTS) and 2,2-diphenyl-1-picrylhydrazyl...

Effect of suboptimal levels of non-phytate phosphorus and exogenous phytase on precaecal digestibility of phosphorus and calcium in laying hensOriginal Paper

Anna Musilova, Martina Lichovnikova, Lucie Kupcikova, Vojtech Anderle

Czech J. Anim. Sci., 2017, 62(11):473-481 | DOI: 10.17221/16/2017-CJAS  

The precaecal digestibility of phosphorus and calcium in laying hens was evaluated at two dietary levels of non-phytate phosphorus (NPP; 1.58 and 2.03 g/kg) and two levels of exogenous 3-phytase (F; 0 and 300 phytase units (FTU)/kg). A total of 192 ISA Brown hens were used for the study, and were housed in enriched cages (8 per cage). At the end of the experiment, which was the peak of the egg production, the content of the posterior half of the ileum from each hen was collected. The lower level of NPP significantly (P < 0.05) improved the precaecal phosphorus digestibility coefficient. There was no significant difference in the amount...

Tissue fatty acid deposition, plasma lipid and cytokine profile in pigs fed a diet with fish oil or palm oilOriginal Paper

Tomáš Komprda, Veronika Rozíková, Monika Vícenová, Nikola Procházková, Petra Ondráčková, Petra Pešková, Martin Faldyna

Czech J. Anim. Sci., 2017, 62(11):482-490 | DOI: 10.17221/110/2016-CJAS  

The present study tested a hypothesis concerning a favourable effect of dietary fish oil on the tissue polyunsaturated fatty acid (PUFA) deposition, and on plasma lipid and cytokine profile. Thirty-two pigs divided into two groups of 16 animals each were fed for 70 days a diet with 2.5% of fish oil (F) and palm oil (P), respectively. The content of PUFA n-3 in the liver, muscle (m. quadriceps femoris), and visceral adipose tissue (VAT) of the F- and P-pigs was 530 and 129, 84 and 19, 1365 and 191 mg/100 g of the fresh tissue, respectively (differences between dietary groups were significant at P < 0.01 in all tissues). Dietary...

Pilot experiment in chickens challenged with Campylobacter jejuni CCM6191 administered enterocin M-producing probiotic strain Enterococcus faecium CCM8558 to check its protective effectOriginal Paper

Andrea Laukova, Monika Pogany Simonova, Ivana Kubasova, Sona Gancarcikova, Iveta Placha, Jana Scerbova, Viera Revajova, Robert Herich, Mikulas Levkut Sn., Viola Strompfova

Czech J. Anim. Sci., 2017, 62(11):491-500 | DOI: 10.17221/12/2017-CJAS  

Campylobacter jejuni is one of the most common food-borne pathogens and chickens are the main source of these bacteria. Enterococcus faecium AL41, enterocin M-producing strain (deponed to the Czech Culture Collection of Microorganisms, Brno, Czech Republic - CCM8558) is our isolate previously applied e.g. in broiler rabbits with beneficial effect. In this study it was used in a 11-day experiment with chickens (1-day-old, breed Cobb 500, n = 40) challenged with C. jejuni. Birds had free access to feed and water; they were randomly divided into four groups per 10 chicks each: control (CG), E. faecium CCM8558...