The influence of herbage on selected parameters of milk and meat quality

Abstract - Yield, botanic composition and chemical analyses of grass and herbage were measured in seven localities with different altitudes between 450 and 900 metres above sea level. Grass and herbage are the most natural and opti-mal feedstuff for cattle. Grazing management should notably regulate the pasture composition, i.e. support dominance of soft stoloniserous strains of grasses and decrease occurrence of weed and less value strain of gramineous grasses. Grazing in the early growth period supported the development of lower stoloniserous grameous grasses and Trifolium repens. A part of the herbage evaluation was observation milk and meat quality on farms. Due to grazing there were some changes in protein content and protein fraction, although not statistically significant. In graz-ing cows, the part of alfa-lacto-albumin increased. Grazing had also an influence on slaughter body and meat quality. Low content of nutrients in grazing herbage showed lower fat production, especially lower fat accumulation in ventricles and lower part of intramuscular fat

Catalogue of Meteorological Instruments in the Museum of History and Technology

Jílek F. Catalogue of Meteorological Instruments in the Museum of History and Technology. In: Revue d'histoire des sciences, tome 25, n°1, 1972. pp. 94-95

Catalogue of Meteorological Instruments in the Museum of History and Technology

Jílek F. Catalogue of Meteorological Instruments in the Museum of History and Technology. In: Revue d'histoire des sciences, tome 25, n°1, 1972. pp. 94-95

Effect of cycloheximide upon maturation of bovine oocytes

International audienc

Inhibition of meiotic maturation in growing pig oocytes by factor(s) from cumulus cells

International audienc

Influence of cytoplasmic microinjection on meiotic competence in growing pig oocytes

International audienc

Quantitative inhibitory influence of porcine cumulus cells upon the maturation of pig and cattle oocytes in vitro

International audienc

Selenium Dynamics in the Blood of Beef Cows and Calves Fed Diets Supplemented with Organic and Inorganic Selenium Sources and the Effect on their Reproduction

The objective of this study was to compare the effects of feed supplementation with sodium selenite or selenized yeast on serum Se levels and reproduction indicators in cattle. In three beef herds young heifers, cows in late pregnancy, and their calves were randomly grouped by 6. In Herd 1, the mean Se serum levels were 51.01 μg l-1 in heifers, 32.12 μg l-1 in cows in late pregnancy, and 29.07 μg l-1 in their calves. In Herd 2, 27.42 μg l-1 (heifers), Z22.9 μg l-1 (late pregnancy), and 23.46 μg l-1 (calves). In Herd 3, 27.07 μg l-1 (heifers), 22 μg l-1 (late pregnant cows), and 31.05 μg l-1 (calves). Over a 6-month period, the animals in Herd 1 were given selenium yeast supplement; in Herd 2 sodium selenite, whereas Herd 3 served as a negative control. Afterwards, a second blood sample was taken. The mean Se serum levels were as follows: Herd 1 (selenium yeast): 90.73 μg l-1 in late pregnant cows ( p -1 in calves (p -1 (late pregnant cows p -1 (calves p -1 (late pregnant cows), 32.85 μg l-1 (calves). A significant difference was also observed in the second blood sample taken in both the late pregnant cows and the calves between the Herds 1 and 2 (late pregnant cows p p < 0.01). No significant differences were demonstrated between the groups. Herds 1 and 2 showed an improvement in their health status, as compared with the previous period, neither in reproduction indicators nor in the weight gain of the calves

Microtubule rearrangement during in vitro maturation of pig oocytes. Effect of cycloheximide

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