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It was determinated the chemical composition, the digestibility of basic alimentary components and collection of red clover and meadow fescue mixtures with following clover participation: 25.50 and 75 %. The green forages from three swathes were subjected to appreciation, beside what utilizing first of it was initiated before the grass heading, but the regrowths were analysed in 6-week spaces. The...
Pathological changes of reproduction organs within groups of cows and heifers of Lowland Black-White breed /LBW/ send to slaughterhouse on account of Bterllity were Investigated. The animals were Iron tanas located in two regions: Wielkopolska and Dolny Śląsk. The research showed three sorts of diseases: disfunction of ovaries, uterus and vagines. The most common disfunctions within the ovary were...
The purpose of study was to determine the effect of supplements added to the diet of cows during the "dried" period, on the subsequent milk production and offspring performances. The IInd experimental group of cows was fed with MONOMIX supplement, the IIIth group with Na₂HCO₃+MgO, the IVth group with B-composition, while the Ist group was settled as a control. It was concluded, that both,...
The performed semi-intensive fattening the Red-White bulls with different share of the HF blood /25, 50, 62,5 and 75%/ showed that the crossbreds with more than 50% HF had higher body measurements but worse indices of body conformation, in comparison with the Red-White bulls. The highest body weights at 18 months of age had the crossbreds F₁ - 499,7 kg as well as the highest daily weight gains - 936...
Studies were conducted on the population of 936 heifers and 342 young bulls /Lowland-Black-White Breed/, reared on the free-stand farm /herd I/ and on farm pursuing the traditional technology of housing /herd II/. For both of herds, the data concerning the descent of animals, diseases diagnosed during the rearing period, size of body and growth rate in following months of life, were collected. It...
The subject of study concerned the relationship between the acid base balance /ABB/ in cows during the last period of pregnancy and the milk yield, some fertilization indexes as well as performances monitored in calves born from healthy cows, and from those with ABB disorders. The results revealed, that in 45.95 % of cows underwent the experimental trials, chronic, compensate respiratory acidosis...
The performed experiment on semi-intensive fattening of the crossbred bulls /25, 50 and 75% HF,Red/ showed that the best fattening ability parameters had the crossbred F₁, those fattened up to the final body weight 550 and 600 kg. The crossbred bulls with 25% HF blood had the worst results, while those with 75ft HF had the intermediate results. The crossbred bulls were worse in dressing percentage...
The purpose of the work was the comparison of choice effectiveness of different female groups /cows selected on bull mothers and all selected cows/ to the reproduction. Together, in the analysis, was taken into consideration 2956 cows /in this 459 heads of bull mothers/ enetering to the production in 1963-80 years. In the analysed herds was applied the independent selection which efectiveness was...
The purpose of study was to determine the effect of the cows diet supplementation with vitamin-mineral premix /Monomix/ as well as buffer compounds, fed during the period before and after delivery, on the collostrum and milk composition, milk yield and calves performance. The study's conclusions were, that 150 g/cows of Monomix given to the diet on 6 weeks before and A weeks after parturition affected...
Analyses of performance for the cows with complete exploitation term showed pronounced superiority of crossbreds, especially those with 50 and 75% HF, over purebred cows in respect of millc production for one year. Tak: into account all the traits, the best results were found in the crossbreds with 50% HF. The milk of the crossbred cows had higher fat content in compi rison with the Red-White. The...
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