385
Effects of different feeding level during three periods of gestation on sow and litter performance

Monday, March 16, 2015: 1:45 PM
306-307 (Community Choice Credit Union Convention Center)
Ping Ren , Southern Research and Outreach Center, University of Minnesota, Waseca, MN
Xiaojian Yang , Southern Research and Outreach Center, University of Minnesota, Waseca, MN
JinSoo Kim , Southern Research and Outreach Center, University of Minnesota, Waseca, MN
Deepa Menon , Southern Research and Outreach Center, University of Minnesota, Waseca, MN
Devi P. Pangeni , Southern Research and Outreach Center, University of Minnesota, Waseca, MN
Hayford Manu , Southern Research and Outreach Center, University of Minnesota, Waseca, MN
Abel Tekeste , Southern Research and Outreach Center, University of Minnesota, Waseca, MN
Samuel Baidoo , Southern Research and Outreach Center, University of Minnesota, Waseca, MN
Abstract Text:

The present study investigated the effects of different feeding level during 3 periods of gestation on sow and litter performance. A total of 113 multiparous sows (Landrace X Large White) were blocked by sow body weight (BW) and backfat (BF) after breeding and randomly allotted to 1 of 4 dietary treatments. All sows were fed the same corn-soybean meal diet with the amount of 1.0 × maintenance energy intake (100 × BW0.75 kcal ME/d) throughout the gestation period except 3 periods of 7 d dietary treatments imposed on d 28, d 56 and d 84 of gestation. During these 3 periods, sows were fed 1 of 4 different feeding levels based on maintenance feed intake: 1) 0.5 × maintenance level; 2) 1.0 × maintenance level; 3) 1.5 × maintenance level; 4) 2.0 × maintenance level. Results showed that with the increase of dietary feeding level, sow BW change (-5.57, -0.74, 2.81 and 8.20 kg, respectively, P < 0.0001), BF change (-0.02, 0.98, 0.74 and 0.82 mm, respectively, P = 0.05), average daily gain (ADG; -0.77, -0.10, 0.39 and 1.14 kg, respectively, P < 0.0001) and gain to feed ratio (G:F; -0.81, -0.05, 0.16 and 0.34 kg/kg, respectively, P < 0.0001) during the 1st period (d 27-34) increased linearly. The results for sow BW and BF change, ADG and G:F during the 2nd (d 55-62) and 3rd periods (d 83-90) were consistent with the 1st period. Additionally, sow BW change (17.81, 25.37, 31.38 and 37.85 kg, respectively, P < 0.0001) and BF change (-0.13, 1.17, 1.43 and 2.61 mm, respectively, P = 0.0002) from d 27 to d 109 increased linearly with the increase of  dietary feeding level during 3 periods of gestation. In contrast, sow BW change (14.67, 9.24, 7.32 and 2.78, respectively, P < 0.0001) reduced linearly and BF change (-0.72, -1.18, -0.74 and -1.59 mm, respectively, P = 0.10) and average daily feed intake (ADFI; 6.97, 6.79, 6.80 and 6.51 kg, respectively, P= 0.10) tended to reduce linearly during lactation period. However, there were no significant differences in litter performance in terms of number of live born and weaned piglets, litter weights at birth and weaning. In conclusion, introduction of different feeding level for 3 short periods during gestation did not affect litter performance, but greatly affected sow BW and BF change during gestation and lactation periods, which may have carry-over effects on subsequent reproductive performance. 

Keywords: Feeding level, sow performance, litter performance

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