Table 4.
Effects of organic TM plus Met and lowering Lys dietary treatments provided (90 d) to rearing gilts (from 58.0 ± 11.1 kg to 151 ± 14.1 kg of BW) on first parity performance
| Control1 | TM plus Met1 |
P-value | ||||||
|---|---|---|---|---|---|---|---|---|
| Standard Lys2 |
Low Lys2 |
Standard Lys2 |
Low Lys2 |
SEM | MinMet | Lys | MinMet × Lys |
|
| Gilts, n | 59 | 58 | 56 | 57 | ||||
| Service | ||||||||
| BW, kg | 181.3 | 180.3 | 184.4 | 179.1 | 2.66 | 0.721 | 0.228 | 0.430 |
| BF, mm | 15.6 | 15.8 | 15.9 | 15.0 | 0.47 | 0.700 | 0.537 | 0.188 |
| Farrowing | ||||||||
| BF, mm | 14.4 | 13.8 | 14.4 | 14.9 | 0.46 | 0.206 | 0.936 | 0.195 |
| Rate, % | 91.4 | 82.6 | 87.8 | 89.5 | 4.39 | 0.373 | 0.669 | 0.212 |
| Total born, n | 17.3 | 17.4 | 17.4 | 16.4 | 0.59 | 0.403 | 0.351 | 0.332 |
| Liveborn, n | 15.6xy | 16.3x | 16.2x | 15.2y | 0.58 | 0.627 | 0.740 | 0.091 |
| Stillborn, % | 9.3 | 7.03 | 5.18 | 7.68 | 1.62 | 0.264 | 0.933 | 0.125 |
| Weaning | ||||||||
| BF, mm | 12.5 | 11.7 | 12.1 | 12.8 | 0.42 | 0.370 | 0.984 | 0.091 |
| Weaned, n | 14.2 | 14.4 | 13.3 | 14.0 | 0.55 | 0.208 | 0.371 | 0.672 |
| Days to estrus | 6.60 | 5.92 | 6.84 | 8.75 | 1.54 | 0.660 | 0.294 | 0.401 |
x,yValues within a row with different superscripts trend at P < 0.10.
1Control, basal diet and TM plus Met (MinMet), with additional 10, 20, and 50 mg/kg of chelated cooper, manganese, and zinc, respectively (0.1%, Aplomotec Plus, Tecnología & Vitaminas, S.L., Alforja, Spain) and increased Met:Lys ratio as 1.01.
2Standard Lys provided 165 CP/kg with 10.0 g Lys/kg between 119 and 163 d of age and 140 g CP/kg with 8.0 g Lys/kg between 164 and 209 d of age; or low Lys, set first to 155 g CP/kg with 8.1 g Lys/kg and second phase to 140 g CP/kg with 6.5 g Lys/kg.