Czech Journal of Animal Science, 2012 (vol. 57), issue 7
Impact of glucogenic additive in transition dairy cow diets of varying ruminal starch degradability on yield and composition of milk and reproductive parameters
J. Matras, R. Klebaniuk, E. Kowalczuk-Vasilev
Czech J. Anim. Sci., 2012, 57(7):301-311 | DOI: 10.17221/6005-CJAS 
A two-factorial experiment was carried out on 6 groups (10 animals each) of Polish Black and White Holstein-Friesian cows in the transition period to determine the effect of glucogenic additive (GA) to the diets containing grains of varied ruminal starch degradation on cow performance. The animals from 3 control groups (C-groups) were fed the diets without any additive, whereas 3 other, experimental ones (A-groups) received the diets with additive of glucogenic preparation (450 g per head/day) comprising calcium propionate and loose propylene glycol (1 : 1). In the control groups as well as in the experimental ones, three analogical treatments, differing...
Influence of Lippia citriodora verbascoside on growth performance, antioxidant status, and serum immunoglobulins content in piglets
G. Pastorelli, R. Rossi, C. Corino
Czech J. Anim. Sci., 2012, 57(7):312-322 | DOI: 10.17221/6006-CJAS
Phytogenic feed additives are used in animal feeding to improve livestock performance. The aim of this study was to determine whether a dietary plant extract from Lippia citriodora, standardized for verbascoside, can modify various immunological, oxidative, and biochemical serum parameters in weaned piglets. A total of 144 piglets, half female and half barrows (7.99 ± 1.40 kg BW), were allocated to three dietary treatments with six replicates per treatment (pens of 8 piglets each). Piglets were supplemented with the following levels of plant extract standardized for verbascoside: 0 (CON = control group), 5 (LV = low verbascoside group),...
Differences in the composition of total and whey proteins in goat and ewe milk and their changes throughout the lactation period
A. Hejtmánková, V. Pivec, E. Trnková, H. Dragounová
Czech J. Anim. Sci., 2012, 57(7):323-331 | DOI: 10.17221/6007-CJAS
This study was conducted to evaluate changes in composition of whey proteins of Czech White Short-haired goat and East Friesian ewe milk and their comparison throughout lactation. Some differences in composition between ewe and goat milk were found. The results showed that the mean total protein (%), whey protein (g/100 g), and β-lactoglobulin (β-Lg, g/100 g) contents of goat milk were 2.75, 0.433, and 0.119 respectively and of ewe milk 6.36, 1.11, and 0.732 respectively. The contents of total protein as well as acid whey proteins in goat milk were nearly constant throughout the lactation period and fluctuated around the mean value while...
Effect of dietary natural supplements on immune response and mineral bioavailability in piglets after weaning
I. Taranu, D.E. Marin, A. Untea, P. Janczyk, M. Motiu, R.D. Criste, W.B. Souffrant
Czech J. Anim. Sci., 2012, 57(7):332-343 | DOI: 10.17221/6008-CJAS
Plants and plant extracts (PPEs) have gained increasing interest as feed additives and possible replacing antibiotics for pig productions. The effects of dietary Chlorella vulgaris (1%), sodium alginate (0.1%), inulin (1.5%), and a mixture of essential oils (0.04%) supplements on immune response, and bioavailability of some micronutrients (iron - Fe, copper - Cu, manganese - Mn, and zinc - Zn) were investigated in weaned piglets in this study. The results showed that the concentration of IgG was increased in the plasma of pigs fed the PPEs supplemented diets being significantly higher (P < 0.05) in the case of dietary sodium alginate...