Czech Journal of Animal Science, 2005 (vol. 50), issue 4
Function of complement regulatory proteins in immunity of reproduction: a review
J. Valentovičová, M. Simon, J. Antalíková
Czech J. Anim. Sci., 2005, 50(4):135-141 | DOI: 10.17221/4007-CJAS 
Humoral immunity has an important role during the maturation and development of the functional properties of spermatozoa. Spermatozoa may be exposed to antisperm antibodies in semen and in cervical, ovarian follicular and fallopian fluid. Antisperm antibodies can be complement-fixing or non-fixing and may affect the reproductive functions in a number of ways. Although the antisperm antibody alone can cause sperm agglutination, complement fixation is required for their immobilization. Therefore, the complement activation might be a "keystone" for the better understanding of "sperm humoral immunity" and some types of infertility. Recently, three cell...
Genetic parameters for test-day model with random regressions for production traits of Czech Holstein cattle
L. Zavadilová, J. Jamrozik, L.R. Schaeffer
Czech J. Anim. Sci., 2005, 50(4):142-154 | DOI: 10.17221/4008-CJAS
Multiple-lactation random regression model was applied to test-day records of milk, fat and protein yields in the first three lactations of the Czech Holstein breed. Data included 9 583 cows, 89 584, 44 207 and 11 266 test-day records in the first, second and third lactation, respectively. Milk, fat and protein in the first three lactations were analysed separately and in a multiple-trait analysis. Linear model included herd-test date, fixed regressions within age-season class and two random effects: animal genetic and permanent environment modelled by regressions. Gibbs sampling method was used to generate samples from marginal posterior distributions...
Analysis of prolificacy in sows of hyperprolific lines of Large White breed
V. Matoušek, A. Čermáková, N. Kernerová, P. Králová
Czech J. Anim. Sci., 2005, 50(4):155-162 | DOI: 10.17221/4009-CJAS
The objective of the paper was to evaluate the results of reproductive performance of sows in some elite breeding herds of the Large White breed included in experimental herds for the production of hyperprolific lines of dam breeds. The set consisted of 98 sows with the known genotypes of ESR, FSHâ and PRLR genes. The dendrogram shows that on the basis of their genetic outfit the sows can be divided into two clusters. The first cluster can be described as a cluster with marked dominance of HPL sows and the second cluster with marked dominance of the sows of basic herd. The first cluster consisted of individuals in which the...
Canonical correlation analysis for studying the relationship between egg production traits and body weight, egg weight and age at sexual maturity in layers
Y. Akbaş, Ç. Takma
Czech J. Anim. Sci., 2005, 50(4):163-168 | DOI: 10.17221/4010-CJAS
In this study, canonical correlation analysis was applied to layer data to estimate the relationships of egg production with age at sexual maturity, body weight and egg weight. For this purpose, it was designed to evaluate the relationship between two sets of variables of laying hens: egg numbers at three different periods as the first set of variables (Y) and age at sexual maturity, body weight, egg weight as the second set of variables (X) by using canonical correlation analysis. Estimated canonical correlations between the first and the second pair of canonical variates were significant (P < 0.01). Canonical weights and loadings from...
Amino acid contents and biological value of protein in various amaranth species
B. Písaříková, S. Kráčmar, I. Herzig
Czech J. Anim. Sci., 2005, 50(4):169-174 | DOI: 10.17221/4011-CJAS
Amino acid content before and after heat treatment was assessed in grain of six selected amaranth varieties and four species: Amaranthus cruentus, A. hypochondriacus, A. caudatus and A. hybridus, cultivated in the Czech Republic. High content of Lys and Arg was detected in both heat treated and untreated grains, as well as satisfactory content of Cys and lower levels of Met, Val, Ile and Leu. The latter three amino acids appear as limiting. Chemical scores of essential amino acids and essential amino acid index (EAAI) were determined. EAAI value of 90.4% shows the favourable nutritional quality of amaranth protein, which is almost...
Effects of dietary vitamin E and vitamin C supplementation on the level of α-tocopherol and L-ascorbic acid in muscle and on the antioxidative status and meat quality of pigs
R. Lahučký, I. Bahelka, K. Novotná, K. Vašíčková
Czech J. Anim. Sci., 2005, 50(4):175-184 | DOI: 10.17221/4012-CJAS
In total thirty pigs (Slovak Meaty) defined by DNA based test as not susceptible to malignant hyperthermia (non-mutant on RYR1) were used in the experiment. Treatment consisted in supplementation of vitamin E (500 mg α-tocopherol/kg diet as α-tocopherol acetate) (group E) and the same doses of vitamin E plus vitamin C (200 mg L-ascorbic acid/kg diet) (group E + C) to finishing pigs for the last 30 days before slaughter. The higher dietary vitamin E level resulted in higher levels of α-tocopherol in fresh (24 h), chill-stored (5 days, 4°C), chill-stored and cooked (80°C) and frozen meat (3 months, -25°C), (P <...