farrowing


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farrowing

the act of parturition in the sow; giving birth to a litter of piglets at term, average the 115th day after conception.

batch farrowing
a group of sows due to farrow at about the same time are moved into the farrowing facility at the same time and kept there until all are farrowed; they are then moved out; the facility is then thoroughly sanitized ready for the next batch.
farrowing crate
cage-like, open pipework unit large enough to hold a sow but too narrow to permit it to turn around. Maximizes use of space and mechanical services, minimizes labor and feed wastage, reduces crushing losses.
farrowing fever
farrowing house
a specialist accommodation unit devoted to the care of sows at farrowing.
farrowing hysteria
affected gilts restless at farrowing savage piglets without cannibalizing them. Mortality rate very high. Likely to recur at next farrowing and gilt or sow should be culled.
induced farrowing
hormonal initiation of parturition before full term, usually with a prostaglandin.
farrowing interval
interval between litters; 6 months is the minimal objective and the interval depends on age of piglets at weaning.
farrowing index
the number of times a sow (herd) farrows in a 365 day period. It, along with litter size and mortality from birth to marketing, determines the number of pigs marketed per sow per year (PMSY). Weaning at 8 weeks of age potentially allows a farrowing index of 2. Weaning at 3 weeks of age potentially allows a farrowing index of 2.5.
isolated farrowing program
sows are farrowed in isolation as a means of preventing the spread of enzootic diseases, especially atrophic rhinitis and enzootic pneumonia.
farrowing rate
the number of sows that farrow divided by the number mated.
References in periodicals archive ?
Table 3 shows the behaviors of sows in different farrowing systems during the pre-farrowing period; 109 days after service (the first day in the farrowing house) and 24 h before farrowing.
Table 4 shows the behaviors of sows in different farrowing systems during the lactation period; day of farrowing, 14 days after farrowing and 27 days after farrowing.
A greater time spent in successful nursing was found in the group farrowing pen (p<0.
When looking at the possible interactions between pregnancy and lactation housing, it can be seen in Table 5 that, when moved into farrowing crates, previously group-housed sows spent more time dog sitting and sternal lying, and less time standing and lateral lying than previously stalled sows.
For the rooting behavior, (Lammers and Lange, 1986) suggest the rooting behavior is one sign of nesting behavior in a farrowing crate.
Previous work has shown that a change from loose housing to confinement at farrowing may be more stressful than confinement throughout pregnancy and lactation (Vestergaard and Hansen, 1984).
There were fewer residual effects of pregnancy housing after farrowing, but EC sows still showed more dog-sitting than SC and GC sows.
The movement away from confinement towards loose-housing at farrowing would also be beneficial to the sow.