277 Effects of timing and amount of feed prior to farrowing on sow and litter performance under commercial conditions

Gourley, K. M.; Swanson, Analicia J; Royall, Rafe Q; Woodworth, J. C.; DeRouchey, Joel M.; Tokach, Mike D; Dritz, S. S.; Milnes, K. J.; Hastad, C.W.

doi:10.1093/jas/skaa054.174

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…The transition period, as described by (Theil, 2015) being the last 10 days of gestation and first 10 days of lactation, is the most critical time for feed management to ensure optimal late gestational growth and piglet survival. Theil (2015) reported limit feeding by ways of feeding multiple small meals often had positive impacts on farrowing performance, which were validated in the United States by Gourley et al (2020); Miller and Kellner (2020).…”

Section: Limit Feeding Gestating and Pre-farrow Sowsmentioning

confidence: 99%

Management strategies to extend feed budgets of grow-finish pigs and the effect on performance, behavioral aggression, and gastric ulceration

Miller

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Section: Limit Feeding Gestating and Pre-farrow Sowsmentioning

confidence: 99%

Management strategies to extend feed budgets of grow-finish pigs and the effect on performance, behavioral aggression, and gastric ulceration

Miller

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Farm data analysis for lifetime performance components of sows and their predictors in breeding herds

Koketsu

Iida

2020

Porc Health Manag

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Our objectives in this review are 1) to define the four components of sow lifetime performance, 2) to organize the four components and other key measures in a lifetime performance tree, and 3) to compile information about sow and herd-level predictors for sow lifetime performance that can help producers or veterinarians improve their decision making. First, we defined the four components of sow lifetime performance: lifetime efficiency, sow longevity, fertility and prolificacy. We propose that lifetime efficiency should be measured as annualized piglets weaned or annualized piglets born alive which is an integrated measure for sow lifetime performance, whereas longevity should be measured as sow life days and herd-life days which are the number of days from birth to removal and the number of days from date of first-mating to removal, respectively. We also propose that fertility should be measured as lifetime non-productive days, whereas prolificacy should be measured as lifetime pigs born alive. Second, we propose two lifetime performance trees for annualized piglets weaned and annualized piglets born alive, respectively, and show inter-relationships between the four components of the lifetime performance in these trees. Third, we describe sow and herd-level predictors for high lifetime performance of sows. An example of a sow-level predictor is that gilts with lower age at first-mating are associated with higher lifetime performance in all four components. Other examples are that no re-service in parity 0 and shorter weaning-to-first-mating interval in parity 1 are associated with higher fertility, whereas more piglets born in parity 1 is associated with higher prolificacy. It appears that fertility and prolificacy are independent each other. Furthermore, sows with high prolificacy and high fertility are more likely to have high longevity and high efficiency. Also, an increased number of stillborn piglets indicates that sows have farrowing difficulty or a herd health problem. Regarding herd-level predictors, large herd size is associated with higher efficiency. Also, herd-level predictors can interact with sow level predictors for sow lifetime performance. For example, sow longevity decreases more in large herds than small-to-mid herds, whereas gilt age at first-mating increases. So, it appears that herd size alters the impact of delayed gilt age at first-mating on sow longevity. Increased knowledge of these four components of sow lifetime performance and their predictors should help producers and veterinarians maximize a sow’s potential and optimize her lifetime productivity in breeding herds.

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Five risk factors and their interactions of probability for a sow in breeding herds having a piglet death during days 0–1, 2–8 and 9–28 days of lactation

Koketsu

Iida

Piñeiro³

2021

Porc Health Manag

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Background Increasing preweaning piglet mortality is a concern for veterinarians and producers in relation to sow performance and piglet welfare. Our objectives were (1) to characterize pre-weaning piglet mortality risk for sows (PWM) during early (0–1 days), mid- (2–8 days) and late (9–28 days) lactation and (2) to quantify the following five factors and their interactions, parity, number of piglets born alive (PBA), number of stillborn piglets (SB), gestation length (GL) and season for PWM during the three lactation phases. Methods Data obtained from 264,333 parity records of 55,635 sows farrowed in 2015 and 2016 from 74 Spanish herds. Three multi-level mixed-effects logistic regression models were separately applied for PWM during three lactation phases, which was analyzed as whether or not a sow had a piglet death (i.e. probability of a sow having a piglet death) in each phase. Results PWM during early, mid- and late lactation were 36.9, 27.0 and 15.4%, respectively. As PBA increased from 11 or less to 16 or more pigs, PWM during early and mid-lactation increased by 15.8 and 6.0%, respectively, but there was no increase during late lactation. Also, as GL decreased from 117–120 to 110–113 days, PWM during early, mid- and late lactation increased by 7.5, 6.8 and 1.5%, respectively. Additionally, PWM during the respective lactation phases increased by 8.3, 5.2 and 1.0%, as SB increased from 0 to 3 or more pigs. During early lactation, parity 1 sows had 2.1% lower PWM than parity 5 or higher sows, but during mid- and late lactation they had 4.2% higher PWM (P < 0.05). However, there was no difference between summer and winter for PWM during early lactation (P = 0.26). Conclusion Management practices to reduce PWM need to take account of these factors, and be modified for different phases. For example, during early lactation special care should be given to piglets born to parity 5 or higher sows farrowing 16 or more PBA, having 3 or more SB or GL 110–113 days, whereas during mid- and late lactation more care should be given to piglets born to parity 1 sows with the same PBA, GL and SB conditions.

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277 Effects of timing and amount of feed prior to farrowing on sow and litter performance under commercial conditions

Cited by 3 publications

References 2 publications

Management strategies to extend feed budgets of grow-finish pigs and the effect on performance, behavioral aggression, and gastric ulceration

Management strategies to extend feed budgets of grow-finish pigs and the effect on performance, behavioral aggression, and gastric ulceration

Farm data analysis for lifetime performance components of sows and their predictors in breeding herds

Five risk factors and their interactions of probability for a sow in breeding herds having a piglet death during days 0–1, 2–8 and 9–28 days of lactation

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