Predictions & Data for this entry
| Model: stx | climate: B, C, D | migrate: | phylum: |
| COMPLETE = 2.5 | ecozone: THp | food: bxM, xiHl | class: |
| MRE = 0.027 | habitat: 0iTi, 0iTs | gender: Dg | order: |
| SMSE = 0.001 | embryo: Tv | reprod: O | family: |
Zero-variate data
| Data | Observed | Predicted | (RE) | Unit | Description | Reference |
|---|---|---|---|---|---|---|
| tg | 277 | 280.6 | (0.01286) | d | age at birth for females | BeltButt1992 |
| tx | 54 | 53.34 | (0.01222) | d | time since birth at weaning | BeltButt1992 |
| tp | 284 | 294.4 | (0.03649) | d | time since birth at puberty for females | BeltButt1992 |
| tpm | 343 | 315 | (0.08163) | d | time since birth at puberty for males | BeltButt1992 |
| am | 6570 | 6364 | (0.0313) | d | life span | BeltButt1992 |
| Wwb | 4.49e+04 | 4.546e+04 | (0.01253) | g | wet weight at birth | BeltButt1992 |
| Wwx | 6.98e+04 | 7.274e+04 | (0.04217) | g | wet weight at weaning for females | BeltButt1992 |
| Wwp | 2.41e+05 | 2.349e+05 | (0.02542) | g | wet weight at puberty for females | BeltButt1992 |
| Wwpm | 2.88e+05 | 3.118e+05 | (0.08277) | g | wet weight at puberty for males | BeltButt1992 |
| Wwi | 6.8e+05 | 7.264e+05 | (0.0683) | g | ultimate wet weight for females | BeltButt1992 |
| Wwim | 1.044e+06 | 9.638e+05 | (0.07682) | g | ultimate wet weight for males | BeltButt1992 |
| Ri | 0.002817 | 0.002848 | (0.01108) | #/d | maximum reprod rate | BeltButt1992 |
| JXL | 2.901e+04 | 2.891e+04 | (0.003296) | g/d | milkproduction | BeltButt1992 |
Uni- and bivariate data
| Data | Figure | Independent variable | Dependent variable | (RE) | Reference |
|---|---|---|---|---|---|
| tW_f |   | time since birth | wet weight | (0.02315) | HeinLosi1998 |
| tW_m | | time since birth | wet weight | (0.01551) | CaloMcDo1973 |
Pseudo-data at Tref = 20°C
| Data | Generalised animal | Bos primigenius Holstein | Unit | Description |
|---|---|---|---|---|
| v | 0.02 | 0.1158 | cm/d | energy conductance |
| kap | 0.8 | 0.9418 | - | allocation fraction to soma |
| kap_R | 0.95 | 0.95 | - | reproduction efficiency |
| p_M | 18 | 29.01 | J/d.cm^3 | vol-spec som maint |
| k_J | 0.002 | 0.002 | 1/d | maturity maint rate coefficient |
| kap_G | 0.8 | 0.8011 | - | growth efficiency |
Discussion
- Males are assumed to differ from females by {p_Am} only
- Milk digestion efficiency is very low, since milk production is much more than the calf consumes
- Slow foetal development is assumed
- mod_3: tWw_f data replaced, due to absence of proper reference
- mod_4: males have equal state variables at b, compared to females
Facts
- milk composition: 2 kJ/g (on basis of wet weight); 3.5% protein, 17.6 kJ/g; 1.5% lipid, 38.8 kJ/g; 4.6% carbohydrate, 17.2 kJ/g; 0.7% mineral 0 kJ/g; 87.7% water 0 kJ/g. Weaning is artifial, farmer forced (Ref: Kooy2010)
Bibliography