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Zielonka z rutwicy wschodniej pochodziła z pokosów: drugiego (odrosty - 4, 8 i 12 tyg.) oraz trzeciego (odrosty 4 i 8 tyg.). W miarę opóźniania terminu sprzętu rośliny zmniejszała się w niej zawartość białka ogólnego (od 293 do 164,8 g/kg s.m.) i popiołu surowego (od 78 do 51,5 g/kg s.m.), a wzrastała ilość włókna surowego (od 254 do 349,9 g/kg s.m.), NDF (od 559 do 649 g/kg s.m.) oraz ADF (od 319...
The experiment was conducted in three oxen about 350 kg BW in Latin square design. The basic diet consisted of barley grain, meadow hay and mineral mixture. The diets were supplemented with avoparcin and Zn-bacitracin of 20 and 35 mg per kg of the ration (DM basis), respectively. The preliminary period lasted 30 days for each cycle of in situ measurements. The Ca, Mg, K, Na, Cu, Zn content was estimated...
The average composition of amino acid profile of feed’s protein (0) was compared with the amino acid rumen undegraded protein (RUP), by calculating the distances of x² between each file of two proteins. The greater value of x², the greater difference between compared proteins. The biggest distance in cereals between 0 fraction and RUP was noted for rye (x² = 73.97), lower for barley (x² = 31.22) and...
In three experiments, executed on calfs it was examined the influence of increasing participation of bruised rye grain (from 0 to 30%), antibiotics (zincbacitracine, saltmycine, monesine and avoparcine) and different levels of soya been and rape bruised grain in substantial mixtures on productive and physiological coefficients. Together with increasing level of rye (0, 10, 20, 30%) in the mixture,...
Experiment was conducted with following compositions cultivated in ratio 1: 1 : Festuca pratensis + Trifolium pratense, Dactylis glomerata + Trifolium pratense, Lolium multiflorum + Trifolium pratense. Chemical composition from three cuts was estimated, the first being gathered in a stage of full flowering of grasses, while the next were cut in every 7 weeks. Also the digestibility of those feeds...
The effect of the haymaking /the traditional haymaking on swath and the two-stages haymaking consisting of the complete fade of swath and the additional drying with the ventilator/ and the silage /fresh green forage, completely dried up forage and fresh with the addition of 0,3% formalin/ on the content of some nitrogenous fractions in Rescue Grass, Timothy, and in the mixture of Rescue Grass with...
Studies have been carried out on 4 fattening steers with permanent rumen fistulas . Corn silage, green alfalfa, pasture lichen and sugar beet top silage were applied. They were supplemented with different forages and concentrates. Samples of rumen content were analysed for pH, N-NH3, total VFA, acetic, propionic and butyric acids, soluble and bacterial N. Using nylon bags in situ, the degradation...
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