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ARS Home » Plains Area » Clay Center, Nebraska » U.S. Meat Animal Research Center » Reproduction Research » Research » Publications at this Location » Publication #362490

Research Project: Improving Lifetime Productivity in Swine

Location: Reproduction Research

Title: Dam body condition during lactation influences piglet growth and maturation pre-finishing

Author
item Rempel, Lea
item Keel, Brittney
item Oliver, William
item Wells, James - Jim
item Lents, Clay
item Rohrer, Gary

Submitted to: American Society of Animal Science Annual Meeting
Publication Type: Abstract Only
Publication Acceptance Date: 4/24/2019
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: We previously reported, piglets reared by fat sows, weighed less during lactation, but were heavier by 45 d of age in comparison to piglets reared by thin or moderate sows. The objective of the current study was to evaluate weight and body condition during pre-finishing and age at puberty of gilts in relation to body condition of their dams at weaning. Eight weekly farrowing seasons (parities 1-4, N=157 litters) were used to evaluate sow body condition (post-farrowing and weaning) and piglet growth. Sows were categorized as thin, moderate, or fat by last rib caliper measurement at weaning. Individual pig weights were recorded at approximately 100 and 145 d of age. Additionally, at 145 d of age, 10th rib backfat and loin eye were measured on a subset (N=567) of pigs and first estrus was monitored in gilts reserved for breeding selection (N=176). Pigs reared by fat sows tended (P<0.10) to be heavier at 145 d of age (90.6 ± 0.75 kg) when compared to pigs reared by thin or moderate sows (89.0 ± 1.48 kg and 88.5 ± 0.82 kg, respectively). Tenth rib backfat during finishing was not different in pigs reared by fat or thin sows (10.0 ± 0.09 mm and 9.8 ± 0.27 mm, respectively); and tended (P<0.10) to be less in pigs reared by moderate sows (9.7 ± 0.09 mm) than in pigs from fat sows. Tenth rib loin eye area was similar. Gilts developed in litters from thin sows tended (P<0.10) to have an early age at puberty in contrast to gilts from moderate or fat sows (182.5 ± 3.82 d vs 189.7 ± 2.49 d and 192.2 ± 1.94 d, respectively). Body condition of sows at weaning did not adversely affect pre-finishing pig growth, however pubertal development was improved in gilts from thin sows.