Predictions & Data for this entry
| Model: std | climate: A | migrate: | phylum: |
| COMPLETE = 2.5 | ecozone: TPi | food: bxCi, biHs | class: |
| MRE = 0.011 | habitat: 0iTf | gender: Dg | order: |
| SMSE = 0.000 | embryo: Tnsf | reprod: O | family: |
Zero-variate data
| Data | Observed | Predicted | (RE) | Unit | Description | Reference |
|---|---|---|---|---|---|---|
| ab | 21 | 20.57 | (0.02026) | d | age at birth | McGi2011 |
| tx | 3 | 2.993 | (0.002344) | d | time since birth at fledging | besgroup |
| tp | 100 | 100 | (3.492e-06) | d | time since birth at puberty | guess |
| tR | 174.3 | 174.3 | ( 0) | d | time since birth at 1st brood | SchuKerj2002 |
| am | 9125 | 9140 | (0.001645) | d | life span | EcoIndia |
| Li | 57 | 57.03 | (0.0006127) | cm | ultimate total length | ADW |
| Wwb | 26.65 | 26.76 | (0.004146) | g | wet weight at birth | SchuKerj2002 |
| Wwi | 959.3 | 984.1 | (0.02587) | g | ultimate wet weight for females | SchuKerj2002 |
| Wwim | 1200 | 1205 | (0.004224) | g | ultimate wet weight for males | ARKive |
| Ri | 0.01644 | 0.01651 | (0.004342) | #/d | maximum reprod rate | EcoIndia |
Uni- and bivariate data
| Data | Figure | Independent variable | Dependent variable | (RE) | Reference |
|---|---|---|---|---|---|
| tW_f |   | time since birth | wet weight | (0.02001) | SchuKerj2002 |
| tW_m | | time since birth | wet weight | (0.04248) | SchuKerj2002 |
Pseudo-data at Tref = 20°C
| Data | Generalised animal | Gallus gallus | Unit | Description |
|---|---|---|---|---|
| v | 0.02 | 0.02725 | cm/d | energy conductance |
| p_M | 18 | 1417 | J/d.cm^3 | vol-spec som maint |
| k_J | 0.002 | 0.05551 | 1/d | maturity maint rate coefficient |
| k | 0.3 | 0.287 | - | maintenance ratio |
| kap | 0.8 | 0.9615 | - | allocation fraction to soma |
| kap_G | 0.8 | 0.7997 | - | growth efficiency |
| kap_R | 0.95 | 0.95 | - | reproduction efficiency |
Discussion
- Males are assume to differ from females by {p_Am} only
- mod_3: v is reduced
- mod_4: males have equal state variables at b, compared to females
- mod_5: Pseudo-data point k is used, rather than k_J; Data set tp and parameter t_R are added, the latter replacing clutch interval t_N. Postnatal T is based on PrinPres1991, see get_T_Aves. See further the revision page, theme puberty
Facts
- Onset of Sexual Maturity in Female Chickens is Genetically Linked to Loci Associated with Fecundity and a Sexual Ornament. Onset of sexual maturity was ascertained by palpating the cloaca of each female once per week. The females were considered sexually mature when an approximate 2.5cm gap was observed between the left and right Tuber ischii. (Ref: WrigRubi2012)
Bibliography