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Characteristics of Piglets Born by Two Highly Prolific Sow Hybrids

Schild, Sarah-Lina and Foldager, Leslie and Rangstrup-Christensen, Lena and Pedersen, Lene Juul (2020). Characteristics of Piglets Born by Two Highly Prolific Sow Hybrids. Frontiers in Veterinary Science. 7 , 355
[Research article]

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High piglet mortality constitutes a welfare challenge in Danish organic pig production with almost one in three piglets dying before weaning. Piglet characteristics such as birth weight, rectal temperature and intrauterine growth restriction (IUGR) affect piglet survival. Due to differences in breeding goals, these characteristics may be expected to differ between sow hybrids. Thus, the aims of the present study were (1) to investigate piglet characteristics in two highly prolific sow hybrids and (2) to study to which extent the aforementioned characteristics affect piglet mortality. Forty-nine sows (22 DanBred and 27 Topigs Norsvin) were followed in their first two parities. Sows were housed outdoors and gave birth in huts. On day 1postpartum(pp) piglets were individually marked, weighed, their rectal temperature was recorded and they were scored for IUGR. Weight and rectal temperature were recorded again 3 dayspp. Principal component analyses were conducted to explore relationships among variables. Early piglet death grouped with IUGR, lower rectal temperature and weight on day 1pp. Late mortality grouped with increasing litter size and DanBred hybrid. Whilst, Topigs Norsvin hybrid grouped with increasing rectal temperature day 3pp, longer crown to rump length, higher weight and more teats on the sow. Results of the statistical analyses showed that Topigs Norsvin piglets were heavier 1 and 3 dayspp(p< 0.001) compared to DanBred piglets. Furthermore, Topigs Norsvin piglets had a higher rectal temperature than DanBred on day 1pp(p= 0.023). The risk of IUGR depended on an interaction between sow hybrid and parity (p= 0.023). DanBred sows gave birth to more piglets (18.2 +/- 0.6) than Topigs Norsvin sows (15.7 +/- 0.5,p= 0.003), however, DanBred sows had fewer teats than Topigs Norsvin sows. Weight on day 1ppaffected both the odds of stillbirth (p< 0.001) and live born death (p< 0.001). Lower rectal temperature day 1pp(p< 0.001) increased the odds of live born death. In conclusion, the investigated hybrids differed in several piglet characteristics related to piglet mortality. Use of sows giving birth to heavier and fewer piglets in the litter may thus be a useful tool to reduce piglet mortality in pig production with outdoor farrowing.

Authors/Creators:Schild, Sarah-Lina and Foldager, Leslie and Rangstrup-Christensen, Lena and Pedersen, Lene Juul
Title:Characteristics of Piglets Born by Two Highly Prolific Sow Hybrids
Series Name/Journal:Frontiers in Veterinary Science
Year of publishing :2020
Article number:355
Number of Pages:12
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 402 Animal and Dairy Science > Animal and Dairy Science.
Keywords:piglet mortality, organic pig production, piglet viability, lactating sows, outdoor farrowing, animal welfare, sow genetics, sow parity
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Additional ID:
Type of IDID
Web of Science (WoS)000549105500001
ID Code:17481
Faculty:LTV - Fakulteten för landskapsarkitektur, trädgårds- och växtproduktionsvetenskap
Department:(LTJ, LTV) > Department of Biosystems and Technology (from 130101)
Deposited By: SLUpub Connector
Deposited On:22 Sep 2020 08:39
Metadata Last Modified:15 Jan 2021 19:45

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