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The protein content of milk from Polish Black-and-White Lowland cows in Wielkopolska



The protein content of milk from Polish Black-and-White Lowland cows in Wielkopolska



Roczniki Akademii Rolniczej w Poznaniu (111, Zootechnika 26): 191-202



Yields of milk, fat and protein during 305-day lactations are tabulated from data on 1169 Polish Black-and-White Lowland heifers in the 66 best large herds in Wielkopolska. The tendency towards low protein yields (123.1 plus or minus 26.9 kg) indicates the desirability of selecting for this trait. 305- and 100-day correlations among yields and contents of milk, fat and protein were mainly significant (P < 0.01).

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