Effects of dairy cow genotype with two planes of nutrition on energy partitioning between milk and body tissue

Journal of Dairy Science
T YanR E Agnew

Abstract

The data used in the present study were derived from a 2 (genotype) x 2 (plane of nutrition) factorial design production study using Holstein-Friesian (n = 32) and Norwegian (n = 32) first-lactation dairy cattle offered grass silage-based diets from 1 to 44 wk of lactation. The high nutrition diet had concentrate inclusions (g/kg of dry matter) of 600, 500, and 400 for lactation days of < 101, 101 to 200, and > 200, respectively, and the low nutrition diet included concentrates at 300, 200, and 100 for the same periods. Dietary metabolizable energy (ME) concentrations were measured in calorimetric chambers at lactation d 80, 160, and 240 respectively, and then applied to production data to calculate ME intake. From wk 1 to 44 of lactation, Holstein-Friesian cows had a consistently lower accumulated live weight gain and body condition score, and a consistently higher ME intake and milk energy output than Norwegian cows, irrespective of the plane of nutrition. Compared with Norwegian cows using mean data derived from the 2 planes of nutrition, Holstein-Friesian cows produced a significantly higher proportion of milk energy output over ME intake in early and mid lactation, although this increase was not significant in late lactati...Continue Reading

References

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Citations

Jul 1, 2010·Animal : an International Journal of Animal Bioscience·N C FriggensH V Petit
Mar 24, 2012·Animal : an International Journal of Animal Bioscience·A R G Wylie
Aug 13, 2015·Animal : an International Journal of Animal Bioscience·L F DongA Gordon
Mar 30, 2016·New Zealand Veterinary Journal·K E DittmerJ C Hunnam
Feb 27, 2018·Journal of Dairy Science·T MehtiöM H Lidauer
Apr 25, 2009·Journal of Dairy Science·L G BairdD J Kilpatrick
Nov 1, 2007·Animal : an International Journal of Animal Bioscience·R M KirklandR W J Steen
Aug 1, 2008·Animal : an International Journal of Animal Bioscience·P C GarnsworthyR Webb
Aug 10, 2015·Journal of Dairy Science·P Mäntysaari, E A Mäntysaari
Jun 1, 2009·Animal : an International Journal of Animal Bioscience·L DelabyJ L Peyraud
Feb 1, 2007·Animal : an International Journal of Animal Bioscience·N C Friggens, J R Newbold
Jan 29, 2011·Tropical Animal Health and Production·Carlos Fernando Aguilar-PérezJuan Gabriel Magaña-Monforte
Aug 21, 2010·Journal of Dairy Science·L Brun-LafleurP Faverdin
Jul 21, 2020·Journal of Dairy Science·A GuinguinaP Huhtanen
Apr 1, 2020·Animal : an International Journal of Animal Bioscience·S McCabeR Prendiville
Feb 1, 2010·Animal : an International Journal of Animal Bioscience·K O'DriscollP French

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