Use of a simulation model to evaluate the influence of reproductive performance and management decisions on net income in beef production.

L. A. Werth, S. M. Azzam, Merlyn K Nielsen, J. E. Kinder

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

A stochastic dynamic model of reproduction and a deterministic cow-herd economic simulation model were used to evaluate how management decisions and reproductive performance interact to influence net income in a cow-calf operation (1,000 cows) for 1 yr of production. The stochastic model was used to determine herd performance when length of breeding season (45, 70, or 120 d) interacted with three postpartum intervals of anestrus (48, 65, or 90 d) and three conception rates at first service (60, 70, or 80%). Short, moderate, and long postpartum intervals were used to reflect differences in reproductive performance. In addition, replacement heifers were bred beginning either 3 wk ahead of the cow herd or at the same time as the cow herd. Fifty-four simulations were generated. Inputs into the economic model were herd performance, livestock and feed prices, nonfeed costs, and feed requirements for 1 yr of production. Feed requirements were calculated separately for each postpartum interval to reflect three different body condition scores, thin, moderate, and good, to correspond with long, moderate, and short postpartum intervals. Net income was greatest with 70-d breeding seasons when the postpartum interval was short or moderate. When the postpartum interval was long, net income was greatest with 120-d breeding seasons because pregnancy rates, as a result of the long breeding season, were highest and feed costs were lowest for thin cows. Overall, net income was greatest when cows were managed to have postpartum intervals of moderate length. Breeding heifers 3 wk before the cows provided the most economic benefit with long postpartum intervals.

Original languageEnglish (US)
Pages (from-to)4710-4721
Number of pages12
JournalJournal of animal science
Volume69
Issue number12
DOIs
StatePublished - Jan 1 1991

Fingerprint

postpartum interval
Postpartum Period
reproductive performance
simulation models
income
beef
cows
Breeding
herds
breeding season
feed requirements
Economic Models
econometric models
heifers
livestock prices
feed prices
Anestrus
cow-calf operations
Costs and Cost Analysis
anestrus

ASJC Scopus subject areas

  • Food Science
  • Animal Science and Zoology
  • Genetics

Cite this

Use of a simulation model to evaluate the influence of reproductive performance and management decisions on net income in beef production. / Werth, L. A.; Azzam, S. M.; Nielsen, Merlyn K; Kinder, J. E.

In: Journal of animal science, Vol. 69, No. 12, 01.01.1991, p. 4710-4721.

Research output: Contribution to journalArticle

Werth, L. A. ; Azzam, S. M. ; Nielsen, Merlyn K ; Kinder, J. E. / Use of a simulation model to evaluate the influence of reproductive performance and management decisions on net income in beef production. In: Journal of animal science. 1991 ; Vol. 69, No. 12. pp. 4710-4721.
@article{0000daf7f9f64739bee654891e587176,
title = "Use of a simulation model to evaluate the influence of reproductive performance and management decisions on net income in beef production.",
abstract = "A stochastic dynamic model of reproduction and a deterministic cow-herd economic simulation model were used to evaluate how management decisions and reproductive performance interact to influence net income in a cow-calf operation (1,000 cows) for 1 yr of production. The stochastic model was used to determine herd performance when length of breeding season (45, 70, or 120 d) interacted with three postpartum intervals of anestrus (48, 65, or 90 d) and three conception rates at first service (60, 70, or 80{\%}). Short, moderate, and long postpartum intervals were used to reflect differences in reproductive performance. In addition, replacement heifers were bred beginning either 3 wk ahead of the cow herd or at the same time as the cow herd. Fifty-four simulations were generated. Inputs into the economic model were herd performance, livestock and feed prices, nonfeed costs, and feed requirements for 1 yr of production. Feed requirements were calculated separately for each postpartum interval to reflect three different body condition scores, thin, moderate, and good, to correspond with long, moderate, and short postpartum intervals. Net income was greatest with 70-d breeding seasons when the postpartum interval was short or moderate. When the postpartum interval was long, net income was greatest with 120-d breeding seasons because pregnancy rates, as a result of the long breeding season, were highest and feed costs were lowest for thin cows. Overall, net income was greatest when cows were managed to have postpartum intervals of moderate length. Breeding heifers 3 wk before the cows provided the most economic benefit with long postpartum intervals.",
author = "Werth, {L. A.} and Azzam, {S. M.} and Nielsen, {Merlyn K} and Kinder, {J. E.}",
year = "1991",
month = "1",
day = "1",
doi = "10.2527/1991.69124710x",
language = "English (US)",
volume = "69",
pages = "4710--4721",
journal = "Journal of Animal Science",
issn = "0021-8812",
publisher = "American Society of Animal Science",
number = "12",

}

TY - JOUR

T1 - Use of a simulation model to evaluate the influence of reproductive performance and management decisions on net income in beef production.

AU - Werth, L. A.

AU - Azzam, S. M.

AU - Nielsen, Merlyn K

AU - Kinder, J. E.

PY - 1991/1/1

Y1 - 1991/1/1

N2 - A stochastic dynamic model of reproduction and a deterministic cow-herd economic simulation model were used to evaluate how management decisions and reproductive performance interact to influence net income in a cow-calf operation (1,000 cows) for 1 yr of production. The stochastic model was used to determine herd performance when length of breeding season (45, 70, or 120 d) interacted with three postpartum intervals of anestrus (48, 65, or 90 d) and three conception rates at first service (60, 70, or 80%). Short, moderate, and long postpartum intervals were used to reflect differences in reproductive performance. In addition, replacement heifers were bred beginning either 3 wk ahead of the cow herd or at the same time as the cow herd. Fifty-four simulations were generated. Inputs into the economic model were herd performance, livestock and feed prices, nonfeed costs, and feed requirements for 1 yr of production. Feed requirements were calculated separately for each postpartum interval to reflect three different body condition scores, thin, moderate, and good, to correspond with long, moderate, and short postpartum intervals. Net income was greatest with 70-d breeding seasons when the postpartum interval was short or moderate. When the postpartum interval was long, net income was greatest with 120-d breeding seasons because pregnancy rates, as a result of the long breeding season, were highest and feed costs were lowest for thin cows. Overall, net income was greatest when cows were managed to have postpartum intervals of moderate length. Breeding heifers 3 wk before the cows provided the most economic benefit with long postpartum intervals.

AB - A stochastic dynamic model of reproduction and a deterministic cow-herd economic simulation model were used to evaluate how management decisions and reproductive performance interact to influence net income in a cow-calf operation (1,000 cows) for 1 yr of production. The stochastic model was used to determine herd performance when length of breeding season (45, 70, or 120 d) interacted with three postpartum intervals of anestrus (48, 65, or 90 d) and three conception rates at first service (60, 70, or 80%). Short, moderate, and long postpartum intervals were used to reflect differences in reproductive performance. In addition, replacement heifers were bred beginning either 3 wk ahead of the cow herd or at the same time as the cow herd. Fifty-four simulations were generated. Inputs into the economic model were herd performance, livestock and feed prices, nonfeed costs, and feed requirements for 1 yr of production. Feed requirements were calculated separately for each postpartum interval to reflect three different body condition scores, thin, moderate, and good, to correspond with long, moderate, and short postpartum intervals. Net income was greatest with 70-d breeding seasons when the postpartum interval was short or moderate. When the postpartum interval was long, net income was greatest with 120-d breeding seasons because pregnancy rates, as a result of the long breeding season, were highest and feed costs were lowest for thin cows. Overall, net income was greatest when cows were managed to have postpartum intervals of moderate length. Breeding heifers 3 wk before the cows provided the most economic benefit with long postpartum intervals.

UR - http://www.scopus.com/inward/record.url?scp=0026297451&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026297451&partnerID=8YFLogxK

U2 - 10.2527/1991.69124710x

DO - 10.2527/1991.69124710x

M3 - Article

VL - 69

SP - 4710

EP - 4721

JO - Journal of Animal Science

JF - Journal of Animal Science

SN - 0021-8812

IS - 12

ER -