Internal consistency of preweaning mortality data collected by swine producers

Vaillancourt, Jean‐Pierre; Marsh, William E.; Dial, Gary D.

doi:10.1016/0167-5877(92)90089-x

Cited by 12 publications

(8 citation statements)

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“…The diff erence between the evaluated groups of sows was 0.87 piglet, which is a highly statistically signifi cant diff erence (P ≤ 0.001) in favor of the group B. Vaillancourt et al (1992) say that the intensive production of sows is accompanied by certain critical phases. Loss of piglets from birth to weaning is considered an important one, either as a result of infectious diseases or nonpathogenic causes, therefore monitoring of piglets allows its optimization.…”

Section: Resultsmentioning

confidence: 79%

Analysis of Reproductive Parameters in Sows with Regard to Their Health Status

Nevrkla¹,

Hadaš²,

Čechová³

et al. 2016

Acta Univ. Agric. Silvic. Mendelianae Brun.

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The aim of the study was to evaluate selected reproductive parameters in sows. Observed parameters were analysed in two herds with different health status. The experiment involved 160 hybrid sows from the 1st to the 5th litter (80 sows with health status A and 80 sows with health status B). Highly statistically significant differences (P ≤ 0.001) and significant differences (P ≤ 0.05) were found between the two groups in length of gravidity, total numbers of piglets, numbers of live-born piglets, numbers of stillborn piglets, numbers of reared piglets and losses of piglets per litter in favor of group B with declared health status. Evaluation of phenotypic correlation between the total number of piglets and the live-born piglets in the sows without declared health status revealed high positive correlation (P ≤ 0.01). Strong positive dependence was found also between the live-born and the reared piglets in this group. In the sows with declared health status, high positive correlation (P ≤ 0.01) was found also between the total number of piglets and the number of live-born piglets and between the number of live-born and reared piglets.

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Section: Resultsmentioning

confidence: 79%

Analysis of Reproductive Parameters in Sows with Regard to Their Health Status

Nevrkla¹,

Hadaš²,

Čechová³

et al. 2016

Acta Univ. Agric. Silvic. Mendelianae Brun.

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“…Nonetheless, even when piglets are autopsied, identifications of the cause of death depend on the person conducting the postmortem examination (Vaillancourt et al, 1990 and1992;Christensen and Svensmark, 1997). …”

Section: Stillbirthsmentioning

confidence: 99%

Confinement of lactating sows in crates for 4 days after farrowing reduces piglet mortality

Moustsen

Hales

Lahrmann

et al. 2013

Animal

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To reduce mortality among suckling piglets, lactating sows are traditionally housed in farrowing crates. Alternatively, lactating sows can be housed in farrowing pens where the sow is loose to ensure more behavioural freedom and consequently a better welfare for the sow, although under commercial conditions, farrowing pens have been associated with increased piglet mortality. Most suckling piglets that die do so within the first week of life, so potentially lactating sows do not have to be restrained during the entire lactation period. Therefore, the aim of the current study was to investigate whether confinement of the sow for a limited number of days after farrowing would affect piglet mortality. A total of 210 sows (Danish Landrace × Danish Yorkshire) were farrowed in specially designed swing-aside combination farrowing pens measuring 2.6 m × 1.8 m (combi-pen), where the sows could be kept loose or in a crate. The sows were either: (a) loose during the entire experimental period, (b) crated from days 0 to 4 postpartum, (c) crated from days 0 to 7 postpartum or (d) crated from introduction to the farrowing pen to day 7 postpartum. The sows and their subsequent litters were studied from introduction to the combi-pen ∼1 week before expected farrowing and until 10 days postpartum. Confinement period of the sow failed to affect the number of stillborn piglets; however, sows that were crated after farrowing had fewer live-born mortality deaths (P < 0.001) compared with the sows that were loose during the experimental period. The increased piglet mortality among the loose sows was because of higher mortality in the first 4 days after farrowing. In conclusion, the current study demonstrated that crating the sow for 4 days postpartum was sufficient to reduce piglet mortality.

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“…Pre‐weaning piglet mortality rates average 10–15% and may reached 30% in some herds (Vaillancourt et al. 1992; Straw et al.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Dose and Route of Administration of R‐cloprostenol on the Parturient Response of Sows

Kaeoket

2006

Reprod Domestic Animals

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The aims of the present study were to further examine the efficacy of different doses and routes of R-cloprostenol administration on the parturition response in sows. Fifty crossbred multiparous sows (Landrace x Yorkshire) with an average parity number of 4.7 +/- 2.4 were allocated to induce farrowing by one of the following treatments: Group I (control, n = 10) injection with normal saline 2 ml administered intramuscularly (i.m.); Group II (n = 10) injection with 75 microg of R-cloprostenol administered i.m. (at 7 AM); Group III (n = 10) injection with 75 microg of R-cloprostenol (at 7 AM) together with 10 IU of oxytocin (24 h after injection of R-cloprostenol) administered i.m.; Group IV (n = 10) injection with 37.5 microg of R-cloprostenol (at 7 AM) administered into perivulva region; Group V (n = 10) injection with 37.5 microg of R-cloprostenol (at 7 AM) administered into perivulva region together with 10 IU of oxytocin (24 h after injection of R-cloprostenol) administered i.m. The following parameters: pre-farrowing maternal behaviour, restless behaviour, R-cloprostenol or oxytocin injection to farrowing interval, expulsion intervals, duration of farrowing, total number of piglets born, litter birthweight, umbilical cord morphology and the degree of meconium staining were record. There were no significant differences among groups for the pre-farrowing maternal behaviours. In all the sows, the restless behaviour was not observed. There were no significant effect of oxytocin administration (10 IU, i.m.) on the percentage of umbilical cord morphology and the degree of meconium staining in different groups. There were no significant effect of route and dose of administration on the number of total piglet born, piglet born alive, stillbirth, mummy and litter birthweight. No significant effects of the different groups were found on the R-cloprostenol and oxytocin injection to farrowing interval, expulsion interval and farrowing duration. In conclusion, the present results demonstrated that a half dose (37.5 microg) of R-cloprostenol administered into the perivulva region was effective for inducing farrowing as the full recommended dose (75 microg) administered into the neck region (i.m.) and with no restless behaviour.

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Internal consistency of preweaning mortality data collected by swine producers

Cited by 12 publications

References 1 publication

Analysis of Reproductive Parameters in Sows with Regard to Their Health Status

Analysis of Reproductive Parameters in Sows with Regard to Their Health Status

Confinement of lactating sows in crates for 4 days after farrowing reduces piglet mortality

The Effect of Dose and Route of Administration of R‐cloprostenol on the Parturient Response of Sows

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