Table 5.
Effects of organic TM plus Met lowering Lys dietary treatments provided (90 d) to rearing gilts (from 58.0 ± 11.1 kg to 151 kg ± 14.1 kg of body weight) on removal reasons during the first parity
| Control1 | TM plus Met1 | P-value | ||||||
|---|---|---|---|---|---|---|---|---|
| Standard Lys2 |
Low Lys2 |
Standard Lys2 |
Low Lys2 |
SEM | MinMet | Lys | MinMet × Lys |
|
| Gilts culled, n | 6 | 9 | 9 | 7 | ||||
| Removals, % | 10.2 | 15.5 | 16.1 | 12.3 | 4.59 | 0.847 | 0.999 | 0.758 |
| Sudden death, % | 50.0 | 77.8 | 44.4 | 100 | 18.60 | 0.999 | 0.736 | 0.069 |
| Reproductive, % | 33.3 | 11.1 | 33.3 | 0.0 | 10.60 | 0.685 | 0.083 | 0.365 |
| Lameness, % | 16.7 | 11.1 | 0.0 | 0.0 | 10.62 | 0.226 | 0.990 | 0.554 |
| Others, % | 0.0 | 22.2 | 22.2 | 0.0 | 9.90 | 0.484 | 0.226 | 0.232 |
| Phases | ||||||||
| Gestation, % | 33.3 | 11.1 | 22.2 | 0.0 | 15.73 | 0.654 | 0.172 | 0.488 |
| Lactation, % | 50.0 | 44.4 | 44.4 | 100 | 19.26 | 0.285 | 0.285 | 0.074 |
| Postweaning, % | 16.7 | 44.4 | 33.3 | 0.0 | 17.60 | 0.433 | 0.999 | 0.219 |
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.