[Studies on acid-base equilibrium in cows during indoor care and nutrition with addition of various mineral mixtures].
Studies were carried out in the period of indoor rearing (January-May) on 86 cows near to calving and their calves. The cows were silage fed with deficient bulky concentrated feeding. The measurements of the parameters (pH, pCO2, SB) determining the acid-base equilibrium in the blood of the cows and their calves were based on Astrup's micromethod by utilizing Siggaard-Anderson's nomograph. The purpose of the studies was to learn the values of acid-base equilibrium indices in conditions of indoor rearing and silage feeding of cows near to calving with deficient bulky dry and concentrated feeds. The effect of the mineral mixture MM added to the diet on acidbase equilibrium in the blood of the cows was also studied, as well as the relationship between the indices of this equilibrium in mothers and their calves and the animal age. The studies showed that cows near to calving fed with 20-30 kg of silage per head a day with irregularly balanced feeding did not reveal any distinct deviations in the acid-base equilibrium of blood. However, most mean pH values were near the lower limit of the assumed standard. The commonly used mixture MM used in feeding did not affect distinctly the parameter values of acid-base equilibrium in the blood of the cows and their calves. A relationship was found between acid-base equilibrium in the blood of calves and in that of their mothers on the day of delivery. With the age of cows pH reaction showed a tendency to shift towards alkalinity. On the seventh day before calving and on the day of calving a tendency in cows was observed to increase the acidity of their blood, which, however, did not exceed the physiological standards.
D000136:Acid-Base Equilibrium; D000821:Animal Feed; D000822:Animal Husbandry / Q000379:methods; D000824:Animal Nutritional Physiological Phenomena; D000818:Animals; D000831:Animals, Newborn / Q000378:metabolism*; D002417:Cattle / Q000378:metabolism*; D005260:Female; D006863:Hydrogen-Ion Concentration; D008903:Minerals / Q000008:administration & dosage; D011044:Poland; D011247:Pregnancy; D011270:Pregnancy, Animal / Q000378:metabolism*; D012820:Silage
D008903:Minerals
Badania nad równowaga kwasowo-zasadowa u krów w okresie chowu alkierzowego i zywienia z dodatkiem róznych mieszanek mineralnych.