Table 2.
Descriptive statistics for predicted data
| Item | Mean | SD | Minimum | Maximum |
|---|---|---|---|---|
| Piglet birth weight, kg1 | 1.3 | 0.13 | 1.0 | 1.9 |
| Litter birth weight, kg2 | 19.5 | 3.00 | 1.9 | 25.6 |
| Final weight of conceptus, kg3 | 29.9 | 6.49 | 2.0 | 50.5 |
| Maternal weight gain, kg4 | 27.2 | 15.51 | −14.2 | 83.1 |
| Total lipid deposition, kg5 | 7.3 | 4.46 | −3.6 | 31.1 |
| Total protein deposition, kg6 | 4.0 | 0.58 | 2.6 | 5.9 |
Values from a total of 712 females (Camborough, PIC, Hendersonville, TN) are used to predict the above variables.
1Piglet birth weight (kg) = b – 0.035 × total born, n, where b for parities 1 and 2+ are 1.78 and 1.90.
2Litter birth weight (kg) = piglet birth weight kg × total born, n.
3Final weight of conceptus (day 114), kg = (((exp (8.621 − 21.02 × exp (−0.053 × gestation, d) + 0.114 × total born, n))/1,000) × (total born, n × average piglet birth weight, kg) / (exp {[9.095 – 17.69 exp (−0.0305 × 114) + 0.0878 × total born, n]}/1000)).
4Maternal weight gain, kg = (final gestation BW, kg – initial gestation BW, kg) – final weight of conceptus, kg.
5Total lipid deposition, kg = Sum of lipid deposition for each sow given by, (ERmf/ 39.7)/1000.
6Total protein deposition, kg = Sum of protein deposition for each sow given by, (ERmp/23.8)/1000.