Correlation of body condition score of cows and milk production in standard lactation

The aim of the study was, within the tested samples of high yielding Holstein-Friesian cows (n = 363), to analyze the significance of the actual level of correlation between the average BCS of cows according to body regions and results in the production of milk indifferent stages and the standard duration of lactation. Differences in average realized BCS in regard to the recommended values in stages of production cycle were highly significant (p ≤ 0.01). In general, realized correlation coefficients, whose significance was tested, were at very low level. The average value of the BCS at dry off period in the first, second and third body region was statistically significantly (p <0.05) and highly significantly (p <0.01) positively associated with milk production during the first 100 days of lactation. The mean value of BCS at dry off period in the second body region was in a statistically significant positive correlation (p <0.05) with the production of milk in the second 100 days and standard lactation. The average value of BCS at dry off period for all three body regions was highly significantly (p <0.05) positively associated with milk production in the first 100 days. The mean value of BCS at calving in the first body region was highly significantly (p <0.01) positively associated with milk production during the first and the second 100 days of lactation and standard lactation. Average BCS value at calving for the second body region was highly significantly (p <0.01) positively correlated with milk production in the first and second 100 days of lactation and significantly positvely correlated (p <0.05) with the production of milk in the standard lactation. The mean value of BCS at calving in the third body region was highly significantly (p <0.01) positively correlated with milk production during the first 100 days of lactation and significantly positively correlated (p <0.05) with the production of milk in the second 100 days and standard lactation. Average BCS value for all three body regions at calving was in a highly significant (p <0.01) positive correlation with milk production in the first hundred days of lactation. A significant positive correlation (p <0.05) with the production of milk in the second 100 days and a standard lactation was achieved. The average value of BCS at the peak of