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 ?
HERD PROFILE FOCUS IMPROVEMENTS ON All herds Lower wean age, increase average parity and matings/service Low PPSY Breeding techniques: Farrowing rate and nonproductive days Medium PPSY Breeding techniques: Farrowing rate and nonproductive days Litter size High PPSY Breeding techniques: Farrowing rate and nonproductive days Litter size Preweaning mortality
In this example, the farrowing rate is a fraction (0.
Farrowing rate refers to the number of sows giving birth compared to the number bred.
If the farrowing rate is 80% and if the crate occupancy rate is set at 110%, 74 sows should be bred each wk.
In the other direction, the farrowing rate could be 65% (or even lower).
SIGNS OF SEASONAL INFERTILITY IN SOWS: * Decreased farrowing rate * Increased days from weaning to estrus
Realistic goals for attaining high PPSY records in a herd are: nonproductive days, <60; weaning age, <24 d; farrowing rate, >80%; litter size, >10.
AREAS TO ASSESS PROFICIENCY IN BREEDING AND GESTATION: * Weaning to estrus length, days * Estrus detection * Breeding * Pregnancy check * Return to estrus * Moving and handling * Farrowing rate * Total number of pigs born * Total number of pigs born alive * Stillbirth rate * Rate of mummies