Female lifetime productivity in a swine integration system using segregated gilt development units.
This study evaluated female lifetime productivity in a swine integration system of Brazil that combines segregated gilt development units called fourth sites (4S) and sow farms (SF). Records of 5,013 culled females from 3 4S and 10 SF were evaluated. The most frequent culling reasons were locomotor problems, in 4S, and litter performance, in SF. Days in herd at culling were 71.8 ± 0.8 in 4S. In SF, parity at culling was 4.4 ± 0.1; the lowest number of pigs born during lifetime (33.5 ± 1.1) was for females culled due to reproductive failures and the lowest number of pigs born per year of lifetime (22.8 ± 0.3) was for sows culled due to litter performance (P < 0.05).
ReproPel, Faculdade de Veterinária, Universidade Federal de Pelotas, 96010-900, Pelotas, Rio Grande do Sul, Brazil.
Rafael R
RR
Ulguim
Ivan
I
Bianchi
Thomaz
T
Lucia
D000822:Animal Husbandry / Q000379:methods*; D000818:Animals; D001938:Brazil; D005260:Female; D006799:Housing, Animal; D008136:Longevity; D010298:Parity; D011247:Pregnancy; D012098:Reproduction / Q000502:physiology*; D013552:Swine / Q000502:physiology*