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Productive and reproductive efficiency of two Holstein Friesian lines of cows which differ genetically for live weight : a thesis presented in partial fulfilment of the requirements for the degree of Master of Applied Science in Animal Science, Massey University
(Massey University, 1998)
Two lines of Holstein Friesian cows which differ genetically for live weight, the Light Line (LL) and the Heavy Line (HL), have been selected at the Dairy Cattle Research Unit (Massey University) since 1989. The aim of the ...