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Effects of genotype, production system and level of nutrition on feed conversion efficiency in Danish dairy cattle herds in 1967-86



Effects of genotype, production system and level of nutrition on feed conversion efficiency in Danish dairy cattle herds in 1967-86



Beretning fra Statens Husdyrbrugsforsog ( 660): 101-125



Data on 108 Jersey, Danish Red (DR) and Danish Black Pied (DBP) herds were analysed. Between 1967 and 1986, daily feed intake and feed intake above maintenance increased by 30.8 and 53.8% overall, and the feed conversion efficiency fell from 91.7 to 85.5% (88.2, 86.4 and 85.8% for Jersey, DR and DBP cows resp.). Feed conversion efficiency was significantly affected by herd, but not by housing (loose housing or stalls).

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Accession: 001818097

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