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Abstract

The challenge of poultry industry is the requirement of single sex preference which is not possible to adopt sperm selection technique due to the heterozygous system in females. Chicken belongs to avian birds and its evolutionary status of avian species is between reptiles and mammals; however,...

Author(s)
Kuo HsiaoYun; Chang IHeng
Publisher
Taiwan Livestock Research Institute, Tainan, Taiwan
Citation
Journal of Taiwan Livestock Research, 2020, 53, 2, pp 126-133
Abstract

Objective:Measurement of steroid hormones in skin appendages such as mammalian hair or claws and in avian feathers represents a recognized non-invasive method for the determination of these parameters. The aim of this pilot study in the Gila Monster was to investigate whether the measurement of sex ...

Author(s)
Schuler, G.; Feller, S.; Schwandt, H. J.
Publisher
Georg Thieme Verlag KG, Stuttgart, Germany
Citation
Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere, 2020, 48, 6, pp 410-419
Abstract

Despite having a wide geographic range and being a common species both in the wild and in captive collections, field methods of sexing have not been investigated in adult reticulated pythons (Malayopython reticulatus). We compared two methods of sex determination: (i) hemipenal probing and (ii)...

Author(s)
Mathew, A.; Low, M. R.; Luz, S.
Publisher
Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
Citation
Proceedings of the International Conference on Diseases of Zoo and Wild Animals, May 13th-16th, 2015, Barcelona, Spain, 2015, pp 172-175
Abstract

A new, non-invasive, simple and fast sexing technique for squamates (lizards and snakes) using ultrasound is presented and described. The six classical methods of sexing are also discussed.

Author(s)
Berthelet, A.; Bulliot, C.
Publisher
Newsmed, Paris, France
Citation
Point Vétérinaire, 2014, 45, 350, pp 6-7
Abstract

Sex steroids are involved in sex determination in almost all vertebrates, including species with temperature-dependent sex determination (TSD). It is well established that aromatase and estrogens are involved in ovary determination in TSD species. In contrast, the role of non-aromatizable androgens ...

Author(s)
Schroeder, A.; Rhen, T.
Publisher
Elsevier, Amsterdam, Netherlands
Citation
General and Comparative Endocrinology, 2019, 281, pp 7-16
Abstract

Although birds have genetically determined sex, the sex ratio has been reported to deviate from parity in several studies. Temperature-dependent sex determination, which is common in reptiles, is absent in birds. However, females are able to adjust their investment into eggs according to the sex of ...

Author(s)
Koláčková, M.; Kreisinger, J.; Albrecht, T.; Hořák, D.
Publisher
Elsevier, Oxford, UK
Citation
Journal of Thermal Biology, 2019, 83, pp 95-102
Abstract

Despite the advent of DNA probes for sex identification of many avian and some reptile species, clinicians involved with zoos, conservation projects, or breeders may still be asked to perform "surgical sexing." This article describes the practical approach to performing endoscopic sex...

Author(s)
Divers, S. J.
Publisher
Saunders, An Imprint of Elsevier, Philadelphia, USA
Citation
Veterinary Clinics of North America: Exotic Animal Practice, 2015, 18, 3, pp 541-554
Abstract

The negative correlation between fattening and laying performance prevents breeding improvement in both laying performance and meat yield. Therefore, specialized chicken lines have been bred in order to achieve either an efficient production of high-quality eggs or high growth rates. As a result,...

Author(s)
Krautwald-Junghanns, M. E.; Cramer, K.; Fischer, B.; Förster, A.; Galli, R.; Kremer, F.; Mapesa, E. U.; Meissner, S.; Preisinger, R.; Preusse, G.; Schnabel, C.; Steiner, G.; Bartels, T.
Publisher
Oxford University Press, Oxford, UK
Citation
Poultry Science, 2018, 97, 3, pp 749-757
Abstract

Captive breeding of endangered species is often difficult, and may be hampered by many factors. Sexual monomorphism, in which males and females are not easily distinguishable, is one such factor and is a common problem in captive breeding of many avian and reptile species. Species-specific nuclear...

Author(s)
Sulandari, S.; Zein, M. S. A.; Arida, E. A.; Hamidy, A.
Publisher
Indonesian Society for Biology and Department of Biology, Bogor, Indonesia
Citation
Hayati Journal of Biosciences, 2014, 21, 2, pp 65-75
Abstract

Background: Alternatives to gross external anatomical sex determination are often required, peculiarly in species displaying poor or absent gross sexual dimorphism, such as the beaded lizard. This study evaluates results of hemipenile contrast radiography accuracy as compared to ultrasonography of...

Author(s)
Meza-Oviedo, M. A.; Gómez Pizano, D. A.; Carrillo D'Lacoste, L.; Campos Guerrero, L. M.; Izquierdo-Uribe, M. P.; Ducoing-Watty, A. E.
Publisher
Elsevier, New York, USA
Citation
Journal of Exotic Pet Medicine, 2020, 34, pp 10-14

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