Czech Journal of Animal Science, 2015 (vol. 60), issue 7

Effect of hemp seed oil supplementation on plasma lipid profile, liver function, milk fatty acid, cholesterol, and vitamin A concentrations in Carpathian goatsOriginal Paper

A. Cozma, S. Andrei, A. Pintea, D. Miere, L. Filip, F. Loghin, A. Ferlay

Czech J. Anim. Sci., 2015, 60(7):289-301 | DOI: 10.17221/8275-CJAS  

The aim of this study was to evaluate the effect of dietary supplementation with hemp seed oil (HSO) on the lipid metabolism, through the plasma lipid profile, liver function and concentrations of fatty acids (FA), cholesterol, and vitamin A in goat milk. Ten Carpathian goats were divided into two groups: one was fed the control diet (C) composed of alfalfa hay and concentrate, and the other was fed C diet supplemented with 93 g/day of HSO (4.7% of dry matter intake) for 31 days. The HSO supplementation did not modify plasma cholesterol, triglyceride or phospholipid concentrations, or the activities of alanine aminotransferase or γ-glutamyltransferase,...

Optimum proportion of standardized ileal digestible sulfur amino acid to lysine to maximize the performance of 25-50 kg growing pigs fed reduced crude protein diets fortified with amino acidsOriginal Paper

G.J. Zhang, P.A. Thacker, J.K. Htoo, S.Y. Qiao

Czech J. Anim. Sci., 2015, 60(7):302-310 | DOI: 10.17221/8276-CJAS  

The study was conducted to determine the standardized ileal digestible (SID) sulfur amino acid (SAA) to lysine (Lys) ratio required to maximize the performance of 25-50 kg pigs fed reduced crude protein (CP) diets fortified with crystalline amino acids. A total of 360 crossbred (Duroc × (Landrace × Large White)) pigs, weighing 25.6 ± 2.7 kg, were blocked by gender, litter, and initial body weight (BW) and allotted to 1 of 5 dietary treatments with 6 pens per treatment and 12 pigs per pen for a 35-day performance trial. The basal diet was based on corn, soybean meal, and wheat bran and was formulated to be deficient in SAA (50% proportion of...

Mitochondrial diversity in autochthonous cattle breeds from the Balkan PeninsulaOriginal Paper

P. Hristov, D. Teofanova, B. Neov, B. Shivachev, G. Radoslavov

Czech J. Anim. Sci., 2015, 60(7):311-318 | DOI: 10.17221/8277-CJAS  

The Bulgarian Grey Cattle (BGC) and Shorthorn Rhodopean Cattle (SRC) are indigenous breeds from the Balkan Peninsula region. The Balkans, as part of Southeast Europe, is a crucial civilization crossroad of cultures, people, and livestock. This region is considered the civilization "cradle" of prehistoric times (around 6500 BC). The aim of the present study is to reveal the genetic profile and population structure of BGC and SRC according to displacement loop control region. The results showed that these ancient cattle breeds belong to the common T1, T2, and T3 haplogroups. Within the BGC population the T3a sub-haplogroup was predominant (about 80%...

Effects of dietary linseed and corn supplement on the fatty acid content in the pork loin and backfat tissueOriginal Paper

J. Čítek, R. Stupka, M. Okrouhlá, K. Vehovský, L. Brzobohatý, M. Šprysl, L. Stádník

Czech J. Anim. Sci., 2015, 60(7):319-326 | DOI: 10.17221/8278-CJAS  

The influence of linseed and corn dietary supplements on the fatty acid (FA) composition of pork was evaluated. The effects of their appropriate use and dosage on pork meat and fat technological quality were also investigated. In total 72 pigs fed complete feed mixtures were divided into 4 groups: control (C), corn- (CD), linseed- (LD), and corn + linseed-supplemented (CLD). After slaughter the lean meat share, intramuscular fat content, meat and fat colour, shear force, drip loss, and malondialdehyde content were determined. Subsequently, the FA content and sum of saturated (SFA), monounsaturated (MUFA), polyunsaturated (PUFA) fatty acids, the n-6/n-3...

Effects of caponization on growth, carcass, and meat characteristics and the mRNA expression of genes related to lipid metabolism in roosters of a Chinese indigenous breedOriginal Paper

X. Guo, H. Nan, D. Shi, J. Zhou, Y. Wan, B. Zhou, Z. Geng, X. Chen, R. Jiang

Czech J. Anim. Sci., 2015, 60(7):327-333 | DOI: 10.17221/8279-CJAS  

The effects of caponization on growth, body measurements, carcass traits, meat quality, and the mRNA expression of three genes related to lipid metabolism in Guang-xi Yellow roosters were evaluated. Thirty roosters (25 days) of similar weight were randomly divided equally into the experimental (capons, n = 15) and control (intact males, n = 15) groups. Caponization was conducted at 28 days of age, and birds were slaughtered at 140 days of age. Capons were significantly heavier (P < 0.05) than intact males and also had longer keel length and chest depth (P < 0.05 or P < 0.01). There were no significant...