Four week repeatability of daily and one hour methane production of mature merino wethers fed 'ad libitum'

S L Bickell; Dorothy L Robinson; A F Toovey; John P Goopy; Roger Hegarty; D K Revell; P E Vercoe

Four week repeatability of daily and one hour methane production of mature merino wethers fed 'ad libitum'

S L Bickell, Dorothy L Robinson, A F Toovey, John P Goopy, Roger Hegarty, D K Revell, P E Vercoe

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

Abstract

Daily methane production (DMP) and 1-hour methane production (1-h MP) were measured twice, 4 weeks apart, on Merino wethers fed 'ad libitum'. This study aimed to determine the 4-week repeatability of DMP and 1-h MP as well as determine how well 1-h MP predicts DMP. After a 4-week interval, the repeatability of DMP was 0.49, while the repeatability of 1-h MP was 0.24. The correlation between DMP and 1-h MP was 0.56 for the first measurement and 0.66 for the second. It was estimated that the mean of 3 independent 1-hour measurements would be at least as repeatable as the DMP measurement. A 1-h MP measurement is a moderate predictor of DMP when sheep are fed 'ad libitum', which may occur during generous grazing conditions, and thus using 1-h MP as tool to select animals for low methane production may be feasible.

Original language	English
Title of host publication	Proceedings of the Association for the Advancement of Animal Breeding and Genetics
Editors	William Pattie
Place of Publication	Armidale, Australia
Publisher	Association for the Advancement of Animal Breeding and Genetics (AAABG)
Pages	415-418
Volume	19
ISBN (Print)	9780646559155
Publication status	Published - 2011
Event	AAABG 2011: 19th Conference of the Association for the Advancement of Animal Breeding and Genetics - Perth, Australia Duration: 19 Jul 2011 → 21 Jul 2011

Conference

Conference	AAABG 2011: 19th Conference of the Association for the Advancement of Animal Breeding and Genetics
City	Perth, Australia
Period	19/07/11 → 21/07/11

Keywords

Animal Nutrition
Animal Breeding

Access to Document

https://hdl.handle.net/1959.11/18704

Handle.net

Persistent link

Cite this

Bickell, S. L., Robinson, D. L., Toovey, A. F., Goopy, J. P., Hegarty, R., Revell, D. K., & Vercoe, P. E. (2011). Four week repeatability of daily and one hour methane production of mature merino wethers fed 'ad libitum'. In W. Pattie (Ed.), Proceedings of the Association for the Advancement of Animal Breeding and Genetics (Vol. 19, pp. 415-418). Association for the Advancement of Animal Breeding and Genetics (AAABG). https://hdl.handle.net/1959.11/18704

Bickell, S L ; Robinson, Dorothy L ; Toovey, A F et al. / Four week repeatability of daily and one hour methane production of mature merino wethers fed 'ad libitum'. Proceedings of the Association for the Advancement of Animal Breeding and Genetics. editor / William Pattie. Vol. 19 Armidale, Australia : Association for the Advancement of Animal Breeding and Genetics (AAABG), 2011. pp. 415-418

@inproceedings{c79bef2c619f4c35ac28989df2c8312c,

title = "Four week repeatability of daily and one hour methane production of mature merino wethers fed 'ad libitum'",

abstract = "Daily methane production (DMP) and 1-hour methane production (1-h MP) were measured twice, 4 weeks apart, on Merino wethers fed 'ad libitum'. This study aimed to determine the 4-week repeatability of DMP and 1-h MP as well as determine how well 1-h MP predicts DMP. After a 4-week interval, the repeatability of DMP was 0.49, while the repeatability of 1-h MP was 0.24. The correlation between DMP and 1-h MP was 0.56 for the first measurement and 0.66 for the second. It was estimated that the mean of 3 independent 1-hour measurements would be at least as repeatable as the DMP measurement. A 1-h MP measurement is a moderate predictor of DMP when sheep are fed 'ad libitum', which may occur during generous grazing conditions, and thus using 1-h MP as tool to select animals for low methane production may be feasible.",

keywords = "Animal Nutrition, Animal Breeding",

author = "Bickell, \{S L\} and Robinson, \{Dorothy L\} and Toovey, \{A F\} and Goopy, \{John P\} and Roger Hegarty and Revell, \{D K\} and Vercoe, \{P E\}",

year = "2011",

language = "English",

isbn = "9780646559155",

volume = "19",

pages = "415--418",

editor = "William Pattie",

booktitle = "Proceedings of the Association for the Advancement of Animal Breeding and Genetics",

publisher = "Association for the Advancement of Animal Breeding and Genetics (AAABG)",

note = "AAABG 2011: 19th Conference of the Association for the Advancement of Animal Breeding and Genetics ; Conference date: 19-07-2011 Through 21-07-2011",

}

Bickell, SL, Robinson, DL, Toovey, AF, Goopy, JP, Hegarty, R, Revell, DK & Vercoe, PE 2011, Four week repeatability of daily and one hour methane production of mature merino wethers fed 'ad libitum'. in W Pattie (ed.), Proceedings of the Association for the Advancement of Animal Breeding and Genetics. vol. 19, Association for the Advancement of Animal Breeding and Genetics (AAABG), Armidale, Australia, pp. 415-418, AAABG 2011: 19th Conference of the Association for the Advancement of Animal Breeding and Genetics, Perth, Australia, 19/07/11. <https://hdl.handle.net/1959.11/18704>

Four week repeatability of daily and one hour methane production of mature merino wethers fed 'ad libitum'. / Bickell, S L; Robinson, Dorothy L; Toovey, A F et al.
Proceedings of the Association for the Advancement of Animal Breeding and Genetics. ed. / William Pattie. Vol. 19 Armidale, Australia: Association for the Advancement of Animal Breeding and Genetics (AAABG), 2011. p. 415-418.

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

TY - GEN

T1 - Four week repeatability of daily and one hour methane production of mature merino wethers fed 'ad libitum'

AU - Bickell, S L

AU - Robinson, Dorothy L

AU - Toovey, A F

AU - Goopy, John P

AU - Hegarty, Roger

AU - Revell, D K

AU - Vercoe, P E

PY - 2011

Y1 - 2011

N2 - Daily methane production (DMP) and 1-hour methane production (1-h MP) were measured twice, 4 weeks apart, on Merino wethers fed 'ad libitum'. This study aimed to determine the 4-week repeatability of DMP and 1-h MP as well as determine how well 1-h MP predicts DMP. After a 4-week interval, the repeatability of DMP was 0.49, while the repeatability of 1-h MP was 0.24. The correlation between DMP and 1-h MP was 0.56 for the first measurement and 0.66 for the second. It was estimated that the mean of 3 independent 1-hour measurements would be at least as repeatable as the DMP measurement. A 1-h MP measurement is a moderate predictor of DMP when sheep are fed 'ad libitum', which may occur during generous grazing conditions, and thus using 1-h MP as tool to select animals for low methane production may be feasible.

AB - Daily methane production (DMP) and 1-hour methane production (1-h MP) were measured twice, 4 weeks apart, on Merino wethers fed 'ad libitum'. This study aimed to determine the 4-week repeatability of DMP and 1-h MP as well as determine how well 1-h MP predicts DMP. After a 4-week interval, the repeatability of DMP was 0.49, while the repeatability of 1-h MP was 0.24. The correlation between DMP and 1-h MP was 0.56 for the first measurement and 0.66 for the second. It was estimated that the mean of 3 independent 1-hour measurements would be at least as repeatable as the DMP measurement. A 1-h MP measurement is a moderate predictor of DMP when sheep are fed 'ad libitum', which may occur during generous grazing conditions, and thus using 1-h MP as tool to select animals for low methane production may be feasible.

KW - Animal Nutrition

KW - Animal Breeding

UR - http://www.aaabg.org/aaabg19/

M3 - Conference contribution

SN - 9780646559155

VL - 19

SP - 415

EP - 418

BT - Proceedings of the Association for the Advancement of Animal Breeding and Genetics

A2 - Pattie, William

PB - Association for the Advancement of Animal Breeding and Genetics (AAABG)

CY - Armidale, Australia

T2 - AAABG 2011: 19th Conference of the Association for the Advancement of Animal Breeding and Genetics

Y2 - 19 July 2011 through 21 July 2011

ER -

Bickell SL, Robinson DL, Toovey AF, Goopy JP, Hegarty R, Revell DK et al. Four week repeatability of daily and one hour methane production of mature merino wethers fed 'ad libitum'. In Pattie W, editor, Proceedings of the Association for the Advancement of Animal Breeding and Genetics. Vol. 19. Armidale, Australia: Association for the Advancement of Animal Breeding and Genetics (AAABG). 2011. p. 415-418

Four week repeatability of daily and one hour methane production of mature merino wethers fed 'ad libitum'

Abstract

Conference

Keywords

Access to Document

Handle.net

Fingerprint

Cite this