Epidemiological evaluation of fertility management in swine herds

Y. H. Schukken; J. Buurman; R. B.M. Huirne; A. H. Willemse; J. C.M. Vernooy; J. van den Broek; J. H.M. Verheijden

doi:10.1016/0378-4320(92)90090-Z

Epidemiological evaluation of fertility management in swine herds

Y. H. Schukken^*, J. Buurman, R. B.M. Huirne, A. H. Willemse, J. C.M. Vernooy, J. van den Broek, J. H.M. Verheijden

^*Corresponding author for this work

FAH theoretische epidemiologie

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Fertility management is important in swine herds. The wide scale availability of automated records from commercial herds makes epidemiologic research feasible. In this paper, the advantages and disadvantages of epidemiologic research when compared with experimental research in institutional herds are discussed. Epidemiological studies are strong in making inferences to the population study, and sample size. The experimental studies are strong in controlling extraneous factors and application of extreme exposures. As an example, the optimal moment of first breeding in gilts is evaluated using observed herd data and epidemiological methods. The increase in litter size in gilts that are bred later in life is outweighed by a shorter expected herd life. It is therefore concluded that breeding to obtain an age at first pregnancy of 200-220 days is optimal.

Original language	English
Pages (from-to)	45-50
Number of pages	6
Journal	Animal Reproduction Science
Volume	28
Issue number	1-4
DOIs	https://doi.org/10.1016/0378-4320(92)90090-Z
Publication status	Published - Jul 1992

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title = "Epidemiological evaluation of fertility management in swine herds",

abstract = "Fertility management is important in swine herds. The wide scale availability of automated records from commercial herds makes epidemiologic research feasible. In this paper, the advantages and disadvantages of epidemiologic research when compared with experimental research in institutional herds are discussed. Epidemiological studies are strong in making inferences to the population study, and sample size. The experimental studies are strong in controlling extraneous factors and application of extreme exposures. As an example, the optimal moment of first breeding in gilts is evaluated using observed herd data and epidemiological methods. The increase in litter size in gilts that are bred later in life is outweighed by a shorter expected herd life. It is therefore concluded that breeding to obtain an age at first pregnancy of 200-220 days is optimal.",

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AU - Schukken, Y. H.

AU - Buurman, J.

AU - Huirne, R. B.M.

AU - Willemse, A. H.

AU - Vernooy, J. C.M.

AU - van den Broek, J.

AU - Verheijden, J. H.M.

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Y1 - 1992/7

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AB - Fertility management is important in swine herds. The wide scale availability of automated records from commercial herds makes epidemiologic research feasible. In this paper, the advantages and disadvantages of epidemiologic research when compared with experimental research in institutional herds are discussed. Epidemiological studies are strong in making inferences to the population study, and sample size. The experimental studies are strong in controlling extraneous factors and application of extreme exposures. As an example, the optimal moment of first breeding in gilts is evaluated using observed herd data and epidemiological methods. The increase in litter size in gilts that are bred later in life is outweighed by a shorter expected herd life. It is therefore concluded that breeding to obtain an age at first pregnancy of 200-220 days is optimal.

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Epidemiological evaluation of fertility management in swine herds

Abstract

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