PMID- 8629320
OWN - NLM
STAT- MEDLINE
DCOM- 19960627
LR  - 20190702
IS  - 0042-4900 (Print)
IS  - 0042-4900 (Linking)
VI  - 138
IP  - 2
DP  - 1996 Jan 13
TI  - Improved performance of a large pig complex after sequential nursery 
      depopulation.
PG  - 31-4
AB  - An attempt was made to compare the productivity and financial benefits of nursery 
      depopulation on five large pig farms which were all part of one complex. Each 
      farm had been experiencing poor post weaning performance for 12 months, and had 
      previously been infected with porcine reproductive and respiratory syndrome virus 
      (PRRSV). A plan to depopulate each nursery sequentially was established, and the 
      pigs were moved to fattening facilities on one of the farms (farm 3) where space 
      was available. Over a four week period, the nurseries of farms 1, 2, 4 and 5 were 
      emptied, cleaned and disinfected, and any changes in nursery performance, 
      mortality and the seroprevalence of antibodies to PRRSV were then assessed for 
      one year. The financial benefit to the entire farm complex was analysed by using 
      partial budget methods. During the year a net benefit of $1,708,431 was assessed 
      to the farm complex owing to the increased numbers of marketable pigs and the 
      reduced antibiotic costs. There were highly significant improvements in nursery 
      growth rate and decreases in mortality on farms 1, 2, 4 and 5, and antibodies to 
      PRRSV were detected on farms 3 and 4 but not on farms 1, 2 and 5. The inability 
      to empty the farm 3 fattening facility, which housed the pigs from the other 
      sites, may have led to the maintenance of its PRRSV positive status and could 
      have served as the source of virus for farm 4.
FAU - Dee, S A
AU  - Dee SA
AD  - Department of Clinical and Population Sciences, College of Veterinary Medicine, 
      University of Minnesota, St Paul 55108, USA.
FAU - Joo, H S
AU  - Joo HS
FAU - Polson, D D
AU  - Polson DD
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - England
TA  - Vet Rec
JT  - The Veterinary record
JID - 0031164
RN  - 0 (Antibodies, Viral)
SB  - IM
MH  - Animal Husbandry
MH  - Animals
MH  - Antibodies, Viral/blood
MH  - Arterivirus/immunology/isolation & purification
MH  - Arterivirus Infections/economics/epidemiology/prevention & control/*veterinary
MH  - Breeding/economics/methods
MH  - Budgets
MH  - Female
MH  - Fluorescent Antibody Technique, Indirect/veterinary
MH  - Genital Diseases, Female/economics/epidemiology/prevention & control/*veterinary
MH  - Housing, Animal/economics/*standards
MH  - Population Density
MH  - Prevalence
MH  - Respiratory Tract Diseases/economics/epidemiology/prevention & 
      control/*veterinary
MH  - Swine
MH  - Swine Diseases/economics/epidemiology/*prevention & control
MH  - Time Factors
EDAT- 1996/01/13 00:00
MHDA- 1996/01/13 00:01
CRDT- 1996/01/13 00:00
PHST- 1996/01/13 00:00 [pubmed]
PHST- 1996/01/13 00:01 [medline]
PHST- 1996/01/13 00:00 [entrez]
AID - 10.1136/vr.138.2.31 [doi]
PST - ppublish
SO  - Vet Rec. 1996 Jan 13;138(2):31-4. doi: 10.1136/vr.138.2.31.