Growth and microbial flora of nonmedicated, segregated, early weaned pigs from a commercial swine operation

Steve S. Dritz From the Departments of Animal Sciences and Industry (Dritz, Nelssen, Tokach, Goodband), Pathology and Microbiology (Chengappa, Staats), and Veterinary Diagnostic Investigation (Nietfeld), Food Animal Health and Management Center, Kansas State University, Manhattan, KS 66506-0201.

Search for other papers by Steve S. Dritz in
Current site
Google Scholar
PubMed
Close
 DVM, PhD
,
M. M. Chengappa From the Departments of Animal Sciences and Industry (Dritz, Nelssen, Tokach, Goodband), Pathology and Microbiology (Chengappa, Staats), and Veterinary Diagnostic Investigation (Nietfeld), Food Animal Health and Management Center, Kansas State University, Manhattan, KS 66506-0201.

Search for other papers by M. M. Chengappa in
Current site
Google Scholar
PubMed
Close
 DVM, PhD
,
James L. Nelssen From the Departments of Animal Sciences and Industry (Dritz, Nelssen, Tokach, Goodband), Pathology and Microbiology (Chengappa, Staats), and Veterinary Diagnostic Investigation (Nietfeld), Food Animal Health and Management Center, Kansas State University, Manhattan, KS 66506-0201.

Search for other papers by James L. Nelssen in
Current site
Google Scholar
PubMed
Close
 PhD
,
Michael D. Tokach From the Departments of Animal Sciences and Industry (Dritz, Nelssen, Tokach, Goodband), Pathology and Microbiology (Chengappa, Staats), and Veterinary Diagnostic Investigation (Nietfeld), Food Animal Health and Management Center, Kansas State University, Manhattan, KS 66506-0201.

Search for other papers by Michael D. Tokach in
Current site
Google Scholar
PubMed
Close
 PhD
,
Robert D. Goodband From the Departments of Animal Sciences and Industry (Dritz, Nelssen, Tokach, Goodband), Pathology and Microbiology (Chengappa, Staats), and Veterinary Diagnostic Investigation (Nietfeld), Food Animal Health and Management Center, Kansas State University, Manhattan, KS 66506-0201.

Search for other papers by Robert D. Goodband in
Current site
Google Scholar
PubMed
Close
 PhD
,
Jerome C. Nietfeld From the Departments of Animal Sciences and Industry (Dritz, Nelssen, Tokach, Goodband), Pathology and Microbiology (Chengappa, Staats), and Veterinary Diagnostic Investigation (Nietfeld), Food Animal Health and Management Center, Kansas State University, Manhattan, KS 66506-0201.

Search for other papers by Jerome C. Nietfeld in
Current site
Google Scholar
PubMed
Close
 DVM, PhD
, and
Jacque J. Staats From the Departments of Animal Sciences and Industry (Dritz, Nelssen, Tokach, Goodband), Pathology and Microbiology (Chengappa, Staats), and Veterinary Diagnostic Investigation (Nietfeld), Food Animal Health and Management Center, Kansas State University, Manhattan, KS 66506-0201.

Search for other papers by Jacque J. Staats in
Current site
Google Scholar
PubMed
Close
 MS

Click on author name to view affiliation information

Objective

To determine whether segregated, early weaned pigs have better growth performance and different microbial flora than those of pigs raised on-site.

Design

Prospective, observational study.

Animals

Pigs from a commercial operation that were known to be infected with several common swine pathogens.

Procedure

Pigs (7 to 10 days old) were weaned and segregated from the farm of origin and compared with littermate control pigs (14 to 17 days old) that were weaned and raised on-site. Pig weight was measured and microbial flora were isolated at 14-day intervals for 84 days, beginning when the pigs were 7 to 10 days old.

Results

At 50 days of age, the segregated, early weaned pigs had a mean weight of 23.7 kg, compared with a mean weight of 12.5 kg for control pigs. Pasteurella multocida was isolated from fewer segregated, early weaned pigs than from controls. Signs of Mycoplasma hyopneumoniae infection were detected in control pigs but not in segregated early weaned pigs. Clinical, serologic, or bacteriologie signs of early postnatal vertical transmission of Actinobacillus pleuropneumonias were not detected in either group.

Clinical Implication

Vertical transmission of M hyopneumoniae was prevented by weaning pigs at 7 to 10 days of age and segregating them off-site, without the use of medication. Although medicated controls were not compared, results from this herd revealed that use of antibiotics is not the most important factor for disease control in segregated, early weaning programs. Minimizing antibiotic use in disease-control protocols reduces costs as well as removes the need for extra-label drugs. (J Am Vet Med Assoc 1996;208:711–715)

Objective

To determine whether segregated, early weaned pigs have better growth performance and different microbial flora than those of pigs raised on-site.

Design

Prospective, observational study.

Animals

Pigs from a commercial operation that were known to be infected with several common swine pathogens.

Procedure

Pigs (7 to 10 days old) were weaned and segregated from the farm of origin and compared with littermate control pigs (14 to 17 days old) that were weaned and raised on-site. Pig weight was measured and microbial flora were isolated at 14-day intervals for 84 days, beginning when the pigs were 7 to 10 days old.

Results

At 50 days of age, the segregated, early weaned pigs had a mean weight of 23.7 kg, compared with a mean weight of 12.5 kg for control pigs. Pasteurella multocida was isolated from fewer segregated, early weaned pigs than from controls. Signs of Mycoplasma hyopneumoniae infection were detected in control pigs but not in segregated early weaned pigs. Clinical, serologic, or bacteriologie signs of early postnatal vertical transmission of Actinobacillus pleuropneumonias were not detected in either group.

Clinical Implication

Vertical transmission of M hyopneumoniae was prevented by weaning pigs at 7 to 10 days of age and segregating them off-site, without the use of medication. Although medicated controls were not compared, results from this herd revealed that use of antibiotics is not the most important factor for disease control in segregated, early weaning programs. Minimizing antibiotic use in disease-control protocols reduces costs as well as removes the need for extra-label drugs. (J Am Vet Med Assoc 1996;208:711–715)

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 246 246 135
PDF Downloads 27 27 5
Advertisement