Reproduction in Camelidae

Novoa, Cesar Augusto Serrano

doi:10.1530/jrf.0.0220003

Cited by 114 publications

(57 citation statements)

References 11 publications

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“…The one-humped camel (Camelus dromedarius) is a seasonal breeder with a relatively short breeding period, when increased ovarian activity is exhibited (Shalash, 1965(Shalash, ,1980Nawito, Shalash, Hoppe ¿St Rakha, 1967 ;Novoa, 1970). In Israel, the normal breeding season occurs from December to early April.…”

Section: Introductionmentioning

confidence: 99%

“…Nawito et ai (1967) divided the follicular wave into the (a) mature follicular stage; (b) atretic follicular stage; (c) non follicular stage; and (d) growing follicular stage. Ovulation in the camel does not occur spontaneously, as in the cow, ewe or goat, and the copulatory stimulus for its induction is indispensable (Nawito et ai, 1967;Novoa, 1970;Shalash, 1980;Elias et ai, 1984a).…”

Section: Introductionmentioning

confidence: 99%

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Induction of oestrus in the camel (Camelus dromedarius) during seasonal anoestrus

Elias¹,

Bedrak²,

Cohen³

1985

Reproduction

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Induction of oestrus in the camel (Camelus dromedarius) during seasonal anoestrus

Elias¹,

Bedrak²,

Cohen³

1985

Reproduction

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“…The dromedary camel is a seasonal polyestrus animal with induced type of ovulation. Decreasing length of daylight appears to be the stimulus for seasonality in camels (Novoa, 1970;Sghiri & Driancourt, 1999). Generally, she-camels reach full maturity and can be bred at 5-7 years of age (Khatami, 1970).…”

Section: Introductionmentioning

confidence: 99%

Morphological Studies on the Vagina and Vestibule of Dromedary Camels (Camelus dromedarius)

Sayed-Ahmed¹,

Elshafey²,

Abd‐Elmaksoud³

2014

Int. J. Morphol.

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SUMMARY:The camel (Camelus dromedarius) is an important multipurpose livestock species and its meat represents about 10% of the red meat consumption in Egypt. The reproductive efficiency of camel under natural condition is generally considered to be low. Sound knowledge about the tubular genital organs of this species might facilitate the application of new reproductive methodology. Our study was therefore conducted to investigate the morphology of mucosal surface of vagina and vestibule on camels using light, scanning and transmission electron microscopy. The mucosal surface of vagina consisted of stratified columnar epithelium with mucous secreting cells (goblet-like cells). SEM of vagina revealed the presence of longitudinal primary and secondary folds and small transverse folds. The columnar epithelium showed marked cell boundary and its apical surface was studded by a lot of microvilli. TEM confirmed the presence of microvilli at apical surfaces and showed some secretory granules in the supranuclear region of the columnar epithelium. The vestibule of dromedary camel was lined by stratified squamous keratinized epithelium. Basal lamina and stratum granulosum of this epithelium showed strong PAS positive reaction. SEM of vestibule revealed the presence of small longitudinal and fine transverse folds with a lot of mucous debris. However TEM of vestibule showed the stratified squamous keratinized epithelium with basal layer of cuboidal cells and superficial layers of squamous cells.

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“…1 Nowadays a new role was created for the camel as milk, meat, wool, hair and hides production. 2 This drawn attention to the need for efficient reproduction.…”

Section: Introductionmentioning

confidence: 99%

Morphological studies on the seasonal changes in the epididymal duct of the one-humped camel (camelus dromedarius)

et al. 2012

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The present work was carried out on 20 testes and epididymis of sexually mature camels to elucidate the gross anatomical, morphometerical, light microscopical and scanning electron microscopical features of the epididymis in different seasons. Anatomically, the epididymal duct of a camel consists of three parts head, body and tail. Histomorphologically, the epididymal duct is subdivided into initial, middle and terminal segments, of which the middle segment is further subdivided into proximal, intermediate and distal parts. There is a gradual decrease in the epithelial height of the epididymal duct from the initial to the terminal segments. This mechanically facilities passage of the sperms toward the terminal segment. High epithelium in the initial segment may indicate a more absorptive power of the epithelium in this segment. The seasonal reproductivety of the epididymal duct in the camel expressed by variations in the weight and volume of the epididymis, total diameter of the epididymal duct, epithelial height, length of the stereocilia, thickness of the muscular coat and cellular distributions in different segments. The spring months offer ideal circumstances for maximal reproductive activity in this species. The cellular components of the epididymal duct epithelium of the camel displays important morphological changes from season to another showing signs of increasing activity during spring in comparison to decreasing activity in other seasons. PAS positive granules are demonstrated in different segments of the epididymal duct and intraepithelial glands in different seasons. These granules are relatively more numerous in spring. The lamina propria surrounding the epididymal duct contains a layer of the elastic fibers which is very thick in winter, thick in spring and thin in other seasons. This increase in thickness of the elastic fibers predisposes for the increase in the total diameter of the epididymal duct in spring. It was conclude that the muscular coat of the middle and terminal segments is the thickest in spring that may be helpful for powerful ejaculation.

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Reproduction in Camelidae

Abstract: Summary. Sexual

Cited by 114 publications

References 11 publications

Induction of oestrus in the camel (Camelus dromedarius) during seasonal anoestrus

Induction of oestrus in the camel (Camelus dromedarius) during seasonal anoestrus

Morphological Studies on the Vagina and Vestibule of Dromedary Camels (Camelus dromedarius)

Morphological studies on the seasonal changes in the epididymal duct of the one-humped camel (camelus dromedarius)

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