PMID- 20046024
OWN - NLM
STAT- MEDLINE
DCOM- 20100202
LR  - 20190606
IS  - 0916-7250 (Print)
IS  - 0916-7250 (Linking)
VI  - 71
IP  - 12
DP  - 2009 Dec
TI  - A high percentage of pigs born dead in litters in high-, intermediate- and 
      low-performing herds.
PG  - 1579-83
AB  - The objectives of the present study were to measure a percentage of pigs born 
      dead in the number of total pigs born (PPBD), and to investigate an association 
      between PPBD and total pigs born by parity groups and three herd groups formed on 
      the basis of the pigs weaned per mated female per 6 years (PWMFY). The studied 
      data included 236,805 parity records of 51,443 sows in 110 herds. The three herd 
      groups, high-, intermediate- and low-performing herds, were formed on the basis 
      of the upper and lower 25th percentiles of PWMFY. Linear mixed-effects models 
      were performed to analyze the data. Mean (+/- SEM) PPBD was 9.6 (+/- 0.03) %. 
      Sows in high-performing herds had lower PPBD for all parity groups than those in 
      low-performing herds (P<0.05). Parity 2 sows had the lowest PPBD between parity 
      groups (P<0.05). The PPBD increased from 7.0 to 13.2% as the parity number 
      increased from 2 to >or= 6. Parity 1 sows had higher PPBD than parity 2 and 3 
      sows (P<0.05). As the total pigs born increased from 10 to 16 pigs, PPBD 
      increased in all the parity groups (P<0.05). In parity 3 or higher, PPBD in 
      low-performing herds increased more steeply than that in high-performing herds as 
      total pigs born increased form 6 to 10 pigs. We suggest that farrowing management 
      including assisted farrowing improve PPBD for sows in parity 3 or higher.
FAU - Hoshino, Yuko
AU  - Hoshino Y
AD  - School of Agriculture, Meiji University, Kawasaki 214-8571, Japan.
FAU - Sasaki, Yosuke
AU  - Sasaki Y
FAU - Koketsu, Yuzo
AU  - Koketsu Y
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - Japan
TA  - J Vet Med Sci
JT  - The Journal of veterinary medical science
JID - 9105360
SB  - IM
MH  - Animal Husbandry
MH  - Animals
MH  - Female
MH  - Fetal Death/*veterinary
MH  - Pregnancy
MH  - Stillbirth/*veterinary
MH  - Swine
MH  - Swine Diseases/*epidemiology
EDAT- 2010/01/05 06:00
MHDA- 2010/02/03 06:00
CRDT- 2010/01/05 06:00
PHST- 2010/01/05 06:00 [entrez]
PHST- 2010/01/05 06:00 [pubmed]
PHST- 2010/02/03 06:00 [medline]
AID - JST.JSTAGE/jvms/001579 [pii]
AID - 10.1292/jvms.001579 [doi]
PST - ppublish
SO  - J Vet Med Sci. 2009 Dec;71(12):1579-83. doi: 10.1292/jvms.001579.