Morphological changes of reproductive organs during egg formation of autochthonous Oravka hens
Bibliographic record
Abstract
Article Details: Received: 2020-11-01 | Accepted: 2020-11-27 | Available online: 2021-01-31 https://doi.org/10.15414/afz.2021.24.mi-prap.33-36 In this study we investigated the changes of reproductive organs and duration of egg formation in autochthonous Oravka hens. The changes of ovary and oviduct in defferent time were investigated on 66 hens at the top of the laying. Reproductive organs have to change their weight and morphological structure depending on the dynamics of egg formation. From ovulation to laying the ovary weight increased from 47.29 to 51.55 g, oviduct weight from 71.89 to 76,31 g. Oviduct length varied from 67.39 to 68.51 g, thee functional parts were changed depending on their activity. Length of the individual oviduct parts was – infundibulum from 3.46 to 3.59 cm, magnum 36.89 to 39.98 cm, isthmus 8.87 to 10.78 cm, uterus from 10.39 to 11.97 cm and vagina from 4.89 to 5.41 cm. Keywords: Oravka, hen, egg formation, ovary, oviduct References Duncan, D. B. (1955). Multiple ranges and multiple F-test. Biometric , 11, 10–42. doi: 10.2307/3001478 Halaj, M. (1982). Morphological changes of reproductive organs of hens during egg formation. Acta zootechnica , 38, 161-173. In Slovak Head, V. (2010). Keeping chickens and other poultry . London: Aucturus Publishing Limited, 160 s. ISBN 978 -1-90723-014-9. Hobson, J. & Lewis, C. (2009). Choosing & Raising Chickens . David & Charles Limited, 2009, 160 s. ISBN 978-0-7153-3664-9. Hocking, P.M. et al. (1987). Ovarian follicular structure of white leghorns fed ad libitum and dwarf and normal broiler breeders fed ad libitum or restricted until point of lay. British Poultry Science , 28, 493-506. Hocking, P.M. and McCormack, H.A. (1995). Differential sensitivity of ovarian follicles to gonadotrophin stimulation in broiler and layer lines of domestic fowl. Journal of Reproduction and Fertility , 105, 49-55. Iwasawa, A. et al. (2010) Morphological and histochemical changes in the uterus epithelium during eggshell formation in quail. Journal of Poultry Science , 47, 183-189. https://doi.org/10.2141/jpsa.009112 JASP 0.8.6 software (2018). Available on https://jasp-stats.org/ Khokhlov, R. YU. and Kuznetcov, S. I. (2007). Morphogenesis of a tunica mucosa of oviduct of the hens. International Journal of Morphology , 25(2):329-333. http://dx.doi.org/10.4067/S0717-95022007000200014 Mahmud, M.A. et al. (2017). Gross morphological and morphometric studies of oviduct in three genotypes of Nigerian indigenous laying chickens. Journal of Diary, Veterinary & Amimal Research , 5 (4), 138-142. DOI: 10.15406/jdvar.2017.05.00151 Mishra, B. et al. (2019). Genetic and hormonal regulation of egg formation in the oviduct of laying hens . Poultry - An Advanced Learning, Asghar Ali Kamboh, IntechOpen, DOI: 10.5772/intechopen.85011 . Available from: https://www.intechopen.com/books/poultry-an-advanced-learning/genetic-and-hormonal-regulation-of-egg -formation-in-the-oviduct-of-laying-hens Mohammadi, H. and Ansari-Pirsaraei, Z. (2016). Follicle diameters, egg weight, and egg production performance in old laying hens injected with growth hormone and testosterone. Journal of Agricultural Science and Technology , 18, 949-959. Moraes, C. et al. (2010). Morphology and histology of the oviduct of Marrecas Anaboschas. Arq Brasilian Veterinary Medicine and Zoological Technology , 62(2), 34-44. 10.15406/jdvar.2017.05.00151 Peris, L. et al. (2005). Effect of lighting program on development of follicles during sexual maturation of laying hens. Biotechnology in Animal Husbandry , 21 (5-6), 247-251. Pollock, C.G. and Orosz, S.E. (2002). Avian reproductive, anatomy, physiology and endocrinology. Veterinary Clinical Exotica , 5(3), 441-474. DOI: 10.1016/s1094-9194(02)00010-5 Rahman, A. (2013). An introduction to morphology of the reproductive system and anatomy of hen’s egg. Journal of Life and Earth Science , 8, 1-10. DOI: 10.3329/jles.v8i0.20133 Robinson, F.E. et al. (1996). Effects of age at photostimulation on reproductive efficiency and carcass characteristics. 2. Egg- type hens. Canadian Journal of Animal Science , 76, 283-288. Sah, N and Mishra, B. (2018). Regulation of egg formation in the oviduct of laying hen. World's Poultry Science Journal . 74 (3), 509-522. DOI: https://doi.org/10.1017/S0043933918000442 Veterany, L. & Jedlička, J. (2002). Poultry Anatomy. Nitra, Garrmond, 97 p. ISBN 80-968659-4-3. In Slovak Vijayakumar, K. et al. (2014) Macro anatomy of female reproductive tract during laying and non-laying period in adult emu birds ( Dromaius novaehollandiae ). Asian Journal of Science and Technology , 5(12), 793-795.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.002 | 0.002 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.000 | 0.004 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.003 | 0.002 |
| Research integrity | 0.002 | 0.003 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".