[The influence of non-genetic factors on milk production V. Data correction for milk productivity in 305 days, in the first three lactations due to the effect of age on calving and the calving month on cows of the Friesian race]
1990
Kume, K. | Llukani, M. (Instituti i Kerkimeve Zooteknike, Tirane (Albania))
A statistical approach is applied for milk productivity indices during the first three lactations of these cows to study the influence degree of age factors and calving month on the cows calving. The use of these correction coefficients calculated by means of the mechanical similarity average on cows 30 months old, calving in May, irrespective of the number of lactations, shows that it decreases considerably the action of these factors of a nongenetic nature
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