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Impact of phase feeding: effects on the growth performance of sows and their litter characteristics

  • Received : 2021.02.01
  • Accepted : 2021.05.04
  • Published : 2021.06.01

Abstract

A total of fourteen primiparous sows' (Landrace × Yorkshire) were used to determine the effects of two patterns of feed intake during early gestation on the growth performance and litter characteristics in sows. Daily feed intake from day 5 to 112 of gestation for parity 1 sows was 2.2 kg·d-1 of feed offered with the exception of seven sows who were offered 3.2 kg·d-1 from day 90 to 108 of gestation (TRT A) or 2.5 kg·d-1 (d 5 - 60) and 2 kg·d-1 (d 60 - 90) of feed with the exception of seven sows who were offered 3.5 kg·d-1 from day 90 to 108 of gestation (TRT B). The different feed intake patterns in early gestation did not have a significant effect on body weight, backfat thickness, or body condition score during, before, and after farrowing (p > 0.05) respectively. However, initial to d 60, backfat thickness difference was significantly improved by TRT B patterns of feed intake during early gestation. In addition, during the overall experiment, average daily feed intake was significantly enhanced for sows in the dietary TRT B group feed intake pattern (p = 0.0001). The fecal score during day 90 was significantly reduced (p = 0.0132) in sows fed with TRT B feed intake pattern. Litter size, litter survival rate, and initial weight showed no significant differences with different feed efficiency of gestating sows. In summary, the results indicate that the 2.5 kg·d-1 gestation intake pattern allowed gestating sows to obtain optimal performance.

Keywords

Acknowledgement

The present research was supported by the research fund of Dankook University in 2021.

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