A comparison of energy balance and metabolic profiles of the New Zealand and North American strains of Holstein Friesian dairy cow

The milk production, energy balance (EB), endocrine and metabolite profiles of 10 New Zealand Holstein Friesian (NZ) cows and 10 North American Holstein Friesian (NA) cows were compared. The NA cows had greater peak milk yields and total lactation milk yields (7387 v. 6208 kg; s.e.d. = 359), lower m...

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Main Authors: J. Patton, J.J. Murphy, F.P. O’Mara, S.T. Butler
Format: Article
Language:English
Published: Elsevier 2008-01-01
Series:Animal
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S1751731108001973
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author J. Patton
J.J. Murphy
F.P. O’Mara
S.T. Butler
author_facet J. Patton
J.J. Murphy
F.P. O’Mara
S.T. Butler
author_sort J. Patton
collection DOAJ
description The milk production, energy balance (EB), endocrine and metabolite profiles of 10 New Zealand Holstein Friesian (NZ) cows and 10 North American Holstein Friesian (NA) cows were compared. The NA cows had greater peak milk yields and total lactation milk yields (7387 v. 6208 kg; s.e.d. = 359), lower milk fat and similar protein concentrations compared with the NZ cows. Body weight (BW) was greater for NA cows compared with NZ cows throughout lactation (596 v. 544 kg; s.e.d. = 15.5), while body condition score (BCS) tended to be lower. The NA strain tended to have greater dry matter intake (DMI) (17.2 v. 15.7 kg/day; s.e.d. = 0.78) for week 1 to 20 of lactation, though DMI as a proportion of metabolic BW was similar for both strains. No differences were observed between the strains in the timing and magnitude of the EB nadir, interval to neutral EB, or mean daily EB for week 1 to 20 of lactation. Plasma concentrations of glucose and insulin were greater for NA cows during the transition period (day 14 pre partum to day 28 post partum). Plasma IGF-I concentrations were similar for the strains at this time, but NZ cows had greater plasma IGF-I concentration from day 29 to day 100 of lactation, despite similar calculated EB. In conclusion, the results of this study do not support the premise that the NZ strain has a more favourable metabolic status during the transition period. The results, however, indicate that NZ cows begin to partition nutrients towards body reserves during mid-lactation, whereas NA cows continue to partition nutrients to milk production.
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spelling doaj.art-f5a30ec4f6464c129763084b9d6c24ac2022-12-21T20:04:27ZengElsevierAnimal1751-73112008-01-0126969978A comparison of energy balance and metabolic profiles of the New Zealand and North American strains of Holstein Friesian dairy cowJ. Patton0J.J. Murphy1F.P. O’Mara2S.T. Butler3Teagasc, Moorepark Dairy Production Research Centre, Fermoy, Co. Cork, Ireland; School of Agriculture, Food Science and Veterinary Medicine, College of Life Sciences, University College Dublin, Belfield, Dublin 4, IrelandTeagasc, Moorepark Dairy Production Research Centre, Fermoy, Co. Cork, IrelandSchool of Agriculture, Food Science and Veterinary Medicine, College of Life Sciences, University College Dublin, Belfield, Dublin 4, IrelandTeagasc, Moorepark Dairy Production Research Centre, Fermoy, Co. Cork, IrelandThe milk production, energy balance (EB), endocrine and metabolite profiles of 10 New Zealand Holstein Friesian (NZ) cows and 10 North American Holstein Friesian (NA) cows were compared. The NA cows had greater peak milk yields and total lactation milk yields (7387 v. 6208 kg; s.e.d. = 359), lower milk fat and similar protein concentrations compared with the NZ cows. Body weight (BW) was greater for NA cows compared with NZ cows throughout lactation (596 v. 544 kg; s.e.d. = 15.5), while body condition score (BCS) tended to be lower. The NA strain tended to have greater dry matter intake (DMI) (17.2 v. 15.7 kg/day; s.e.d. = 0.78) for week 1 to 20 of lactation, though DMI as a proportion of metabolic BW was similar for both strains. No differences were observed between the strains in the timing and magnitude of the EB nadir, interval to neutral EB, or mean daily EB for week 1 to 20 of lactation. Plasma concentrations of glucose and insulin were greater for NA cows during the transition period (day 14 pre partum to day 28 post partum). Plasma IGF-I concentrations were similar for the strains at this time, but NZ cows had greater plasma IGF-I concentration from day 29 to day 100 of lactation, despite similar calculated EB. In conclusion, the results of this study do not support the premise that the NZ strain has a more favourable metabolic status during the transition period. The results, however, indicate that NZ cows begin to partition nutrients towards body reserves during mid-lactation, whereas NA cows continue to partition nutrients to milk production.http://www.sciencedirect.com/science/article/pii/S1751731108001973dairy cowsenergy balancegenetic selectionnutrient partitioning
spellingShingle J. Patton
J.J. Murphy
F.P. O’Mara
S.T. Butler
A comparison of energy balance and metabolic profiles of the New Zealand and North American strains of Holstein Friesian dairy cow
Animal
dairy cows
energy balance
genetic selection
nutrient partitioning
title A comparison of energy balance and metabolic profiles of the New Zealand and North American strains of Holstein Friesian dairy cow
title_full A comparison of energy balance and metabolic profiles of the New Zealand and North American strains of Holstein Friesian dairy cow
title_fullStr A comparison of energy balance and metabolic profiles of the New Zealand and North American strains of Holstein Friesian dairy cow
title_full_unstemmed A comparison of energy balance and metabolic profiles of the New Zealand and North American strains of Holstein Friesian dairy cow
title_short A comparison of energy balance and metabolic profiles of the New Zealand and North American strains of Holstein Friesian dairy cow
title_sort comparison of energy balance and metabolic profiles of the new zealand and north american strains of holstein friesian dairy cow
topic dairy cows
energy balance
genetic selection
nutrient partitioning
url http://www.sciencedirect.com/science/article/pii/S1751731108001973
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