The Effect of Sodium Lye Treated Straw Administration on Some Hematological and Clinicobiochemical Indicators of Internal Environment in Beef-Cattle

Veterinarni Medicina 37, 1992, 481-491

Fattened bulls were fed experimentally sodium lye treated straw. An experimental group (n=8) was given pellets containing 67 % of lye-treated straw for a year period. The treatment consisted in the spraying of 25 % sodium lye solution with urea addition at a dose of 10-15 1 of solution per 100 kg straw. The prepared granular mixture contained 67 % straw, 30 % mixture for cattle fattening (HZG], 3 % sodium lye and urea (maximally 1 % urea of this amount). The pH value of the granular mixture ranged from 8.5 to 9.5. These parameters were followed in both groups of animals during this experiment: some haematological and clinico-biochemical indicators - Er, Le, Hb, HMT, CB, urea, Na, K, Ca, Mg, P, Zn, Cu, beta-carotene, vitamin A, vitamin E, nonesterified fatty acids, total lipids, triglycerides, cholesterol, AST and ALT activities. A clinical examination during and at the end of experiment did not reveal any changes in the health state of animals either in the experimental or in the control group. Tabs. II, III, IV show the results obtained from detailed clinico-biochemical observation. As Tab. 11 shows, the animals of experimental group had higher counts of leucocytes, the increase being significant at the end of experiment. As to beta-carotene levels, vitamin E levels and ALT activities, the lower values were determined in the experimental group, which was fed the granular mixture containing sodium lye treated straw. On the other hand, higher concentrations were determined in total protein. The values of other investigated indicators did not document any changes indicating the effect on the health state of animals in either the experimental or the control group. Tab. IV illustrates plasma mineral concentrations. No marked changes in mineral levels which would result from lye-treated straw administration were observed during the experiment. A paradoxical decrease in plasma mineral concentration was found in sodium. The average daily weight gain in the experimental group was 0.749 kg for the whole fattening period. It may be stated on the basis of clinical and clinico-biochemical observation that the administration of sodium lye treated straw to fattened cattle does not have negative effects on the health state of fattened cattle if it is provided for all other requirements for feed ration formulae and if requirements for nutrients are met

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