Feeding of pregnant sows 4 weeks before farrowing

(New trial from SEGES)

Optimal weight of new born piglets

One of the big challenges in feeding of pregnant sows – reach optimal weight of new born piglets. Due to this, SEGES finished research, which evaluating impact of diet with high Lysine and bigger dose of feed on sows performance. In the end of the research, were compared productivity of control group of sows (standard feeding recommendations with 4.2 g. of dig. Lysine/FU) and concept group ( 5.8 g. of dig. Lysine/FU +0.5 FU/sow/day during last 4 weeks before farrowing).

Way of feeding in gestating unit Control Concept
No. of sows 274 279
Back fat on the moment of insemination, mm. 13.2 13.3
Back fat 5 weeks after insemination, mm 14.3 14.4
Back fat 10 weeks after insemination, mm 14.7 14.7
Back fat after moving to farrowing section, mm 18 18
Days in gestating unit 111 111
Total feed consumption in gestating unit, FU/sow 291 303
Avarage feed consumption FU/day 2.62 2.73

 

Results from farrowing section Control Concept
No. of sows 199 206
Average litter number 3.6 3.6
Avarage weighed piglets, stk 4139 4237
Total born/litter 21 20.8
Weight of new born piglets, kg 1.28 1.29
Alive born/litter, stk 18.9 18.8
Weight of alive born piglets, kg 1.31 1.31
Stillborn piglets/litter, stk 2.0 1.9
Weight of stillborn piglets, kg 1.01 1.05
Surviving rate of total born piglets, % 75.9 77.1

 

Recommended feeding curve from SEGES, FU/sow/day
Day Fat Optimal condition Skinny Gilts
Back fat on the weaning time, mm >16 13-16 <13  
0 2.5 3.0 4.5 2.2 - 2.4
26 2.5 3.0 4.5 2.2 - 2.4
31 2.0 2.5 3.7 2.5 - 2.7
76 2.0 2.5 3.7 2.5 - 2.7
81 3.5 3.5 4.0 3.3
112 3.5 3.5 4.0 3.3
114 3.5 3.5 3.5 3.3
115 3.0 6.0 3.0 3.0
Farrowing 3.0 3.0 3.0 3.0

 

Conclusions

The feeding curve is individual for each farm and feed intake have to be under control.

Back fat thickness on time of farrowing 16-22 mm giving optimal milk productivity.

Feeding of pregnant sows by feed with content of dig, Lysine higher than norm on 60% and with the dose bigger on 14% from standard recommendations is not giving expected improvements on weight of new born piglets. 

For more information and dialogue, please contact your Vilomix Nutritionist.

Source: SEGES, April 2019