+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ PDF Full Text
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Translate
+ Recently Requested

Integrated systems analysis of sow replacement rates in a hierarchical swine breeding structure



Integrated systems analysis of sow replacement rates in a hierarchical swine breeding structure



Journal of Animal Science 71(11): 2885-2890



Sow replacement rates in a three-tiered breeding structure were investigated for a 10-yr planning horizon using a stochastic life-cycle swine production model. Market hogs were produced in a three-breed static crossing program and marketed on a liveweight basis. Growth and reproductive traits of individual pigs were simulated using genetic, environmental, and economic parameters. Sows were culled after a maximum of 1, 5, or 10 parities. Systems were defined by maximum sow age at culling and included combinations of 1- and 5-parity nucleus and 1-, 5-, and 10-parity multiplier and commercial tiers. Economic response to index selection was considerable for all culling alternatives with yearly increases in system profits ranging from $1.06 to 1.44 for each commercial hog marketed. When sows were culled after one parity in nucleus, multiplier, and commercial tiers, respectively (1,1,1), annual changes in net returns and all cost measures were 40 to 50% larger than responses in systems with lower sow replacement rates. Based on 10-yr averages for net returns, systems with low multiplier- and commercial-level replacement rates were more profitable than systems with higher replacement rates. The most profitable system (5,10,10) differed from the least profitable system (1,1,1) by more than $10 per pig, but when the (1,1,1) system was excluded, the range was only $3 per pig. The system with lowest replacement rates supported 3,388 more multiplier and 34,151 more commercial sows from a 750-sow nucleus level than the (1,1,1) system. Output from the two extremes differed by > 664,000 commercial market hogs sold. Greater benefit and larger tier sizes resulted from increasing maximum parity level from 1 to 5 than from increasing parity from 5 to 10.

(PDF emailed within 0-6 h: $19.90)

Accession: 002414024

Download citation: RISBibTeXText

PMID: 8270511

DOI: 10.2527/1993.71112885x


Related references

Genetic and economic analyses of sow replacement rates in the commercial tier of a hierarchical swine breeding structure. Journal of Animal Science 71(6): 1400-1406, 1993

Genetic and economic analyses of female replacement rates in the dam-daughter pathway of a hierarchical swine breeding structure. Journal of Animal Science 70(7): 2053-2064, 1992

Optimum sow replacement rates in a hierarchical breeding structure for the production of female replacements. Journal of Animal Science 69(SUPPL 1): 199, 1991

Optimum sow replacement rates in a 3 tiered hierarchical breeding structure for the production of 3 breed static market hogs. Journal of Animal Science 69(SUPPL 1): 200, 1991

Economic analysis of commercial swine breeding herd replacement rates. Journal of Animal Science 77(SUPPL 1): 42, 1999

A bioeconomic simulation model for a hierarchical swine breeding structure. Journal of Animal Science 70(6): 1760-1774, 1992

Analysis of the Hierarchical Structure of the Factors Shaping LANDSCAPE-IRRIGATIVE SYSTEMS AGRICULURE. Russian Agricultural Sciences 2018(1): 39-43, 2018

Analysis of the Hierarchical Structure of Factors Shaping Landscape-Specific Ameliorative Systems in Agriculture. Russian Agricultural Sciences 44(2): 166-170, 2018

The Hierarchical Structure of Self-Concept and the Application of Hierarchical Confirmatory Factor Analysis. Journal of Educational Measurement 24(1): 17-39, 1987

Hierarchical management for integrated community energy systems. Applied Energy 160: 231-243, 2015

Hierarchical resource allocation for integrated modular avionics systems. Journal of Systems Engineering and Electronics 22(5): 780-787, 2011

Integrated insemination breeding: For swine too?. Tierzuchter 24 (9) 228-229, 1972

Product Structure-Based Integrated Life Cycle Analysis (PSILA): a technique for cost modelling and analysis of closed-loop production systems. Journal of Cleaner Production 70: 105-117, 2014

Structure of swine stalls and developments in swine breeding. Bedrijfsontwikkeling 3 (5) 427-430, 1972

Population structure and mating breeding systems in trillium part 4 factors affecting breeding systems. Japanese Journal of Genetics 48(6): 411, 1973