Genetic variation and heritability of ostrich weight traits

A Engelbrecht; S W P Cloete; Kim L Bunter; J B van Wyk

Genetic variation and heritability of ostrich weight traits

A Engelbrecht, S W P Cloete, Kim L Bunter, J B van Wyk

Animal Genetics and Breeding Unit

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

Abstract

Estimates of genetic parameters for ostrich weight traits (recorded from 1 to 12 months of age) were obtained with multiple-trait animal models. Heritability estimates ranged from 0.06 for 1-month weight to 0.36 for 11-month weight, generally increasing with age. Concurrent estimates for hen permanent environment effects were low, without a specific trend. Genetic correlations among weight traits were positive, although correlations between weight at 1-month of age and later weight traits were generally not significantly different from zero. Moderate to high heritability estimates and high genetic correlations amongst later weights indicate that selection for weight at ages higher than 7 months of age would be effective in improving weight at slaughter.

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	183-186
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 Breeding

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https://hdl.handle.net/1959.11/9863

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Engelbrecht, A., Cloete, S. W. P., Bunter, K. L., & van Wyk, J. B. (2011). Genetic variation and heritability of ostrich weight traits. In W. Pattie (Ed.), Proceedings of the Association for the Advancement of Animal Breeding and Genetics (Vol. 19, pp. 183-186). Association for the Advancement of Animal Breeding and Genetics (AAABG). https://hdl.handle.net/1959.11/9863

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title = "Genetic variation and heritability of ostrich weight traits",

abstract = "Estimates of genetic parameters for ostrich weight traits (recorded from 1 to 12 months of age) were obtained with multiple-trait animal models. Heritability estimates ranged from 0.06 for 1-month weight to 0.36 for 11-month weight, generally increasing with age. Concurrent estimates for hen permanent environment effects were low, without a specific trend. Genetic correlations among weight traits were positive, although correlations between weight at 1-month of age and later weight traits were generally not significantly different from zero. Moderate to high heritability estimates and high genetic correlations amongst later weights indicate that selection for weight at ages higher than 7 months of age would be effective in improving weight at slaughter.",

keywords = "Animal Breeding",

author = "A Engelbrecht and Cloete, \{S W P\} and Bunter, \{Kim L\} and \{van Wyk\}, \{J B\}",

year = "2011",

language = "English",

isbn = "9780646559155",

volume = "19",

pages = "183--186",

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",

}

Engelbrecht, A, Cloete, SWP, Bunter, KL & van Wyk, JB 2011, Genetic variation and heritability of ostrich weight traits. 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. 183-186, AAABG 2011: 19th Conference of the Association for the Advancement of Animal Breeding and Genetics, Perth, Australia, 19/07/11. <https://hdl.handle.net/1959.11/9863>

Genetic variation and heritability of ostrich weight traits. / Engelbrecht, A; Cloete, S W P; Bunter, Kim L 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. 183-186.

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

TY - GEN

T1 - Genetic variation and heritability of ostrich weight traits

AU - Engelbrecht, A

AU - Cloete, S W P

AU - Bunter, Kim L

AU - van Wyk, J B

PY - 2011

Y1 - 2011

N2 - Estimates of genetic parameters for ostrich weight traits (recorded from 1 to 12 months of age) were obtained with multiple-trait animal models. Heritability estimates ranged from 0.06 for 1-month weight to 0.36 for 11-month weight, generally increasing with age. Concurrent estimates for hen permanent environment effects were low, without a specific trend. Genetic correlations among weight traits were positive, although correlations between weight at 1-month of age and later weight traits were generally not significantly different from zero. Moderate to high heritability estimates and high genetic correlations amongst later weights indicate that selection for weight at ages higher than 7 months of age would be effective in improving weight at slaughter.

AB - Estimates of genetic parameters for ostrich weight traits (recorded from 1 to 12 months of age) were obtained with multiple-trait animal models. Heritability estimates ranged from 0.06 for 1-month weight to 0.36 for 11-month weight, generally increasing with age. Concurrent estimates for hen permanent environment effects were low, without a specific trend. Genetic correlations among weight traits were positive, although correlations between weight at 1-month of age and later weight traits were generally not significantly different from zero. Moderate to high heritability estimates and high genetic correlations amongst later weights indicate that selection for weight at ages higher than 7 months of age would be effective in improving weight at slaughter.

KW - Animal Breeding

UR - http://trove.nla.gov.au/work/162660639

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

M3 - Conference contribution

SN - 9780646559155

VL - 19

SP - 183

EP - 186

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 -

Genetic variation and heritability of ostrich weight traits

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