Maintenance energy requirements of dairy cows

John Corbett; M Freer

Maintenance energy requirements of dairy cows

John Corbett
, M Freer

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Agnew et al. (2000) and Kebreab et al (2003) report that cows in recent years yielding up to 160 MJ milk/d (51.6 kg 4% fat-corrected milk, FCM) had a mean metabolizable energy requirement for maintenance (MEm) of 0.63 MJ/kgW⁰.⁷⁵. Reasons of Agnew et al. (2000) for that being 30% greater than the AFRC (1993) value of 0.48 MJ/KGW⁵ include a high fibre diet, which was not given to the cows studied, and grazing activity, though there was little grazing it these studies. Agnew el al. (2000) and Yan et al. (2003) appear to regard improved genetic merit as the primary cause. There is some variation among 'Bos taurus' breeds in their MEm which is about 17%greater than for 'B. indicus' (SCA 1990); it is improbable that it could be a further 30% greater for cows improved genetically.

Original language	English
Title of host publication	Recent Advances in Animal Nutrition in Australia
Editors	J L Corbett
Place of Publication	Armidale, Australia
Publisher	University of New England
Pages	5A-5A
Volume	14
ISBN (Print)	1863898417
Publication status	Published - 2003
Event	RAAN 2003: Recent Advances in Animal Nutrition in Australia - University of New England, Armidale, Australia Duration: 13 Jul 2003 → 16 Jul 2003

Conference

Conference	RAAN 2003: Recent Advances in Animal Nutrition in Australia
City	Armidale, Australia
Period	13/07/03 → 16/07/03

Keywords

Animal Nutrition

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https://hdl.handle.net/1959.11/3988

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@inproceedings{9c775dd767da428bbb9cc6b1bd63a1ff,

title = "Maintenance energy requirements of dairy cows",

abstract = "Agnew et al. (2000) and Kebreab et al (2003) report that cows in recent years yielding up to 160 MJ milk/d (51.6 kg 4\% fat-corrected milk, FCM) had a mean metabolizable energy requirement for maintenance (MEm) of 0.63 MJ/kgW⁰.⁷⁵. Reasons of Agnew et al. (2000) for that being 30\% greater than the AFRC (1993) value of 0.48 MJ/KGW⁵ include a high fibre diet, which was not given to the cows studied, and grazing activity, though there was little grazing it these studies. Agnew el al. (2000) and Yan et al. (2003) appear to regard improved genetic merit as the primary cause. There is some variation among 'Bos taurus' breeds in their MEm which is about 17\%greater than for 'B. indicus' (SCA 1990); it is improbable that it could be a further 30\% greater for cows improved genetically.",

keywords = "Animal Nutrition",

author = "John Corbett and M Freer",

year = "2003",

language = "English",

isbn = "1863898417",

volume = "14",

pages = "5A--5A",

editor = "\{L Corbett\}, J",

booktitle = "Recent Advances in Animal Nutrition in Australia",

publisher = "University of New England",

note = "RAAN 2003: Recent Advances in Animal Nutrition in Australia ; Conference date: 13-07-2003 Through 16-07-2003",

}

TY - GEN

T1 - Maintenance energy requirements of dairy cows

AU - Corbett, John

AU - Freer, M

PY - 2003

Y1 - 2003

N2 - Agnew et al. (2000) and Kebreab et al (2003) report that cows in recent years yielding up to 160 MJ milk/d (51.6 kg 4% fat-corrected milk, FCM) had a mean metabolizable energy requirement for maintenance (MEm) of 0.63 MJ/kgW⁰.⁷⁵. Reasons of Agnew et al. (2000) for that being 30% greater than the AFRC (1993) value of 0.48 MJ/KGW⁵ include a high fibre diet, which was not given to the cows studied, and grazing activity, though there was little grazing it these studies. Agnew el al. (2000) and Yan et al. (2003) appear to regard improved genetic merit as the primary cause. There is some variation among 'Bos taurus' breeds in their MEm which is about 17%greater than for 'B. indicus' (SCA 1990); it is improbable that it could be a further 30% greater for cows improved genetically.

AB - Agnew et al. (2000) and Kebreab et al (2003) report that cows in recent years yielding up to 160 MJ milk/d (51.6 kg 4% fat-corrected milk, FCM) had a mean metabolizable energy requirement for maintenance (MEm) of 0.63 MJ/kgW⁰.⁷⁵. Reasons of Agnew et al. (2000) for that being 30% greater than the AFRC (1993) value of 0.48 MJ/KGW⁵ include a high fibre diet, which was not given to the cows studied, and grazing activity, though there was little grazing it these studies. Agnew el al. (2000) and Yan et al. (2003) appear to regard improved genetic merit as the primary cause. There is some variation among 'Bos taurus' breeds in their MEm which is about 17%greater than for 'B. indicus' (SCA 1990); it is improbable that it could be a further 30% greater for cows improved genetically.

KW - Animal Nutrition

UR - http://trove.nla.gov.au/work/33151111?selectedversion=NBD41064497

M3 - Conference contribution

SN - 1863898417

VL - 14

SP - 5A-5A

BT - Recent Advances in Animal Nutrition in Australia

A2 - L Corbett, J

PB - University of New England

CY - Armidale, Australia

T2 - RAAN 2003: Recent Advances in Animal Nutrition in Australia

Y2 - 13 July 2003 through 16 July 2003

ER -

Maintenance energy requirements of dairy cows

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