Stocking density, pig welfare, and production profitability

H. Huang, G. Y. Miller

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This study investigates the effect of stocking density on production decisions and profitability of a two-site (nursery and grow-finish) swine facility. The relationship between stocking density and pig performance was evaluated using regression analysis and data from peer-reviewed journal articles. Based on the estimated ADG and ADFI equations, growth and cumulative feed intake functions incorporating the influences of space allowance and group size were mathematically derived. Using a profit maximization model, we found that the optimal pig flow strategy assumes that the system consists of a nursery building and two identical grow-finish buildings and all of the pigs in the nursery flow to the grow-finish buildings in rotation. The optimal days on feed are 60 days for the nursery and 121 days for the grow-finish pigs. The optimal space allowance is at the minimum space allowance levels required for pig welfare considerations in accordance with the European Communities' standard (0.32 m2/nursery-pig and 0.73 m2/finish-pig). The optimal group size is 70 and 100 pigs/pen for the nursery and grow-finish pigs, respectively. The optimal market weight is about 130 kg. The optimized wean-to-finish system allocates 18% of space to nursery and 82% of space to grow-finish of 1,700 m2 available to allocate, producing 5,408 marketed hogs a year and generating an annual profit of $101,248. The results suggest that the assumed minimum space allowance is the major influences of the optimization problem.

Original languageEnglish (US)
Title of host publicationLivestock Environment VII - Proceedings of the Seventh International Symposium
EditorsM.J. Briggs, M.E. McCormick
Pages651-658
Number of pages8
StatePublished - Dec 1 2005
EventLivestock Environment VII - 7th International Symposium - Baltimore, MD, United States
Duration: Oct 20 2004Oct 22 2004

Publication series

NameLivestock Environment VII - Proceedings of the Seventh International Symposium

Other

OtherLivestock Environment VII - 7th International Symposium
CountryUnited States
CityBaltimore, MD
Period10/20/0410/22/04

Fingerprint

Profitability
Regression analysis
European Union

Keywords

  • Optimization
  • Pig production
  • Pig welfare
  • Profitability
  • Stocking density

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Huang, H., & Miller, G. Y. (2005). Stocking density, pig welfare, and production profitability. In M. J. Briggs, & M. E. McCormick (Eds.), Livestock Environment VII - Proceedings of the Seventh International Symposium (pp. 651-658). (Livestock Environment VII - Proceedings of the Seventh International Symposium).

Stocking density, pig welfare, and production profitability. / Huang, H.; Miller, G. Y.

Livestock Environment VII - Proceedings of the Seventh International Symposium. ed. / M.J. Briggs; M.E. McCormick. 2005. p. 651-658 (Livestock Environment VII - Proceedings of the Seventh International Symposium).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Huang, H & Miller, GY 2005, Stocking density, pig welfare, and production profitability. in MJ Briggs & ME McCormick (eds), Livestock Environment VII - Proceedings of the Seventh International Symposium. Livestock Environment VII - Proceedings of the Seventh International Symposium, pp. 651-658, Livestock Environment VII - 7th International Symposium, Baltimore, MD, United States, 10/20/04.
Huang H, Miller GY. Stocking density, pig welfare, and production profitability. In Briggs MJ, McCormick ME, editors, Livestock Environment VII - Proceedings of the Seventh International Symposium. 2005. p. 651-658. (Livestock Environment VII - Proceedings of the Seventh International Symposium).
Huang, H. ; Miller, G. Y. / Stocking density, pig welfare, and production profitability. Livestock Environment VII - Proceedings of the Seventh International Symposium. editor / M.J. Briggs ; M.E. McCormick. 2005. pp. 651-658 (Livestock Environment VII - Proceedings of the Seventh International Symposium).
@inproceedings{ade39664eaa1451c89964db0895b49e3,
title = "Stocking density, pig welfare, and production profitability",
abstract = "This study investigates the effect of stocking density on production decisions and profitability of a two-site (nursery and grow-finish) swine facility. The relationship between stocking density and pig performance was evaluated using regression analysis and data from peer-reviewed journal articles. Based on the estimated ADG and ADFI equations, growth and cumulative feed intake functions incorporating the influences of space allowance and group size were mathematically derived. Using a profit maximization model, we found that the optimal pig flow strategy assumes that the system consists of a nursery building and two identical grow-finish buildings and all of the pigs in the nursery flow to the grow-finish buildings in rotation. The optimal days on feed are 60 days for the nursery and 121 days for the grow-finish pigs. The optimal space allowance is at the minimum space allowance levels required for pig welfare considerations in accordance with the European Communities' standard (0.32 m2/nursery-pig and 0.73 m2/finish-pig). The optimal group size is 70 and 100 pigs/pen for the nursery and grow-finish pigs, respectively. The optimal market weight is about 130 kg. The optimized wean-to-finish system allocates 18{\%} of space to nursery and 82{\%} of space to grow-finish of 1,700 m2 available to allocate, producing 5,408 marketed hogs a year and generating an annual profit of $101,248. The results suggest that the assumed minimum space allowance is the major influences of the optimization problem.",
keywords = "Optimization, Pig production, Pig welfare, Profitability, Stocking density",
author = "H. Huang and Miller, {G. Y.}",
year = "2005",
month = "12",
day = "1",
language = "English (US)",
isbn = "1892769484",
series = "Livestock Environment VII - Proceedings of the Seventh International Symposium",
pages = "651--658",
editor = "M.J. Briggs and M.E. McCormick",
booktitle = "Livestock Environment VII - Proceedings of the Seventh International Symposium",

}

TY - GEN

T1 - Stocking density, pig welfare, and production profitability

AU - Huang, H.

AU - Miller, G. Y.

PY - 2005/12/1

Y1 - 2005/12/1

N2 - This study investigates the effect of stocking density on production decisions and profitability of a two-site (nursery and grow-finish) swine facility. The relationship between stocking density and pig performance was evaluated using regression analysis and data from peer-reviewed journal articles. Based on the estimated ADG and ADFI equations, growth and cumulative feed intake functions incorporating the influences of space allowance and group size were mathematically derived. Using a profit maximization model, we found that the optimal pig flow strategy assumes that the system consists of a nursery building and two identical grow-finish buildings and all of the pigs in the nursery flow to the grow-finish buildings in rotation. The optimal days on feed are 60 days for the nursery and 121 days for the grow-finish pigs. The optimal space allowance is at the minimum space allowance levels required for pig welfare considerations in accordance with the European Communities' standard (0.32 m2/nursery-pig and 0.73 m2/finish-pig). The optimal group size is 70 and 100 pigs/pen for the nursery and grow-finish pigs, respectively. The optimal market weight is about 130 kg. The optimized wean-to-finish system allocates 18% of space to nursery and 82% of space to grow-finish of 1,700 m2 available to allocate, producing 5,408 marketed hogs a year and generating an annual profit of $101,248. The results suggest that the assumed minimum space allowance is the major influences of the optimization problem.

AB - This study investigates the effect of stocking density on production decisions and profitability of a two-site (nursery and grow-finish) swine facility. The relationship between stocking density and pig performance was evaluated using regression analysis and data from peer-reviewed journal articles. Based on the estimated ADG and ADFI equations, growth and cumulative feed intake functions incorporating the influences of space allowance and group size were mathematically derived. Using a profit maximization model, we found that the optimal pig flow strategy assumes that the system consists of a nursery building and two identical grow-finish buildings and all of the pigs in the nursery flow to the grow-finish buildings in rotation. The optimal days on feed are 60 days for the nursery and 121 days for the grow-finish pigs. The optimal space allowance is at the minimum space allowance levels required for pig welfare considerations in accordance with the European Communities' standard (0.32 m2/nursery-pig and 0.73 m2/finish-pig). The optimal group size is 70 and 100 pigs/pen for the nursery and grow-finish pigs, respectively. The optimal market weight is about 130 kg. The optimized wean-to-finish system allocates 18% of space to nursery and 82% of space to grow-finish of 1,700 m2 available to allocate, producing 5,408 marketed hogs a year and generating an annual profit of $101,248. The results suggest that the assumed minimum space allowance is the major influences of the optimization problem.

KW - Optimization

KW - Pig production

KW - Pig welfare

KW - Profitability

KW - Stocking density

UR - http://www.scopus.com/inward/record.url?scp=33645036533&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33645036533&partnerID=8YFLogxK

M3 - Conference contribution

AN - SCOPUS:33645036533

SN - 1892769484

T3 - Livestock Environment VII - Proceedings of the Seventh International Symposium

SP - 651

EP - 658

BT - Livestock Environment VII - Proceedings of the Seventh International Symposium

A2 - Briggs, M.J.

A2 - McCormick, M.E.

ER -