Monitoring and controlling ovarian activities in wild ungulates

Sontakke, Sadanand D

doi:10.1016/j.theriogenology.2017.12.008

Cited by 19 publications

(11 citation statements)

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“…These issues have led to the development of non-invasive techniques to study reproductive processes using fecal samples. This methodology has gained considerable importance due to the ease of sample collection and analysis [ 18 , 20 - 22 , 24 ]. Although sedatives and tranquilizers are indicated for restraint in free-ranging and intractable animals, chemical restraint methods are known to pose significant health risks and could alter plasma progesterone concentrations [ 25 - 27 ].…”

Section: Introductionmentioning

confidence: 99%

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Opportunities and challenges associated with fecal progesterone metabolite analysis

et al. 2018

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Conventionally, plasma or milk progesterone evaluations are used to determine the reproductive status of female animals. Collection of such samples is often associated with difficulties of animal handling and restraint. Measurable quantities of progesterone metabolites are found in feces of animals. Their concentrations are known to be well correlated to plasma progesterone levels and are, therefore, used as non-invasive samples for assessing reproductive function in a wide range of animal species. Although the analysis of fecal progesterone metabolites has been widely accepted in many laboratories, several factors are known to affect the results from this valuable analytical technique. Some of these factors include storage/transportation media for fecal samples, type of solvent that is used for extraction of progesterone metabolites from feces, and the type and sensitivity of an assaying technique employed. Although fecal progesterone metabolites analysis is associated with some difficulties, it can effectively be used to monitor reproductive function in a wide range of animal species. This review aims to highlight the usefulness of fecal progesterone metabolite analysis as a non-invasive technique in monitoring reproductive function in animals. The article mainly focuses on the many opportunities and challenges associated with this analytical technique.

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Section: Introductionmentioning

confidence: 99%

“…Milk samples are usually obtained from lactating animals while urine samples will require the fixing of catheters and some animal restraint. Fecal samples, however, can be collected at any time with ease and without any stress or restraint [ 23 , 24 , 30 , 31 ].…”

Section: Introductionmentioning

confidence: 99%

Opportunities and challenges associated with fecal progesterone metabolite analysis

et al. 2018

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“…This results in individuals that consistently have higher (or lower) infection intensities relative to other individuals 70,71 . Perhaps supporting a hypothesis of delayed conception, the reduced fetal size in ewes with high parasite intensity may be a consequence of parasite-induced energetic constraints and consequent later conception dates resulting in shorter development time for the fetuses of these highly parasitized mothers 25,72,73 .…”

Section: Discussionmentioning

confidence: 82%

Parasite intensity drives fetal development and sex allocation in a wild ungulate

Aleuy

Serrano

Ruckstuhl

et al. 2020

Sci Rep

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An understanding of the mechanisms influencing prenatal characteristics is fundamental to comprehend the role of ecological and evolutionary processes behind survival and reproductive success in animals. Although the negative influence of parasites on host fitness is undisputable, we know very little about how parasitic infection in reproductive females might influence prenatal factors such as fetal development and sex allocation. Using an archival collection of Dall’s sheep (Ovis dalli dalli), a capital breeder that depends on its body reserves to overcome the arctic winter, we investigated the direct and indirect impacts of the parasite community on fetal development and sex allocation. Using partial least squares modelling, we observed a negative effect of parasite community on fetal development, driven primarily by the nematode Marshallagia marshalli. Principal component analysis demonstrated that mothers with low parasite burden and in good body condition were more likely to have female versus male fetuses. This association was primarily driven by the indirect effect of M. marshalli on ewe body condition. Refining our knowledge of the direct and indirect impact that parasite communities can have on reproduction in mammals is critical for understanding the effects of infectious diseases on wildlife populations. This can be particularly relevant for species living in ecosystems sensitive to the effects of global climate change.

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“…Ultrasound technology had been used as a non‐invasive approach to investigate the reproductive organ structures of living animals such as the Indonesian thin‐tailed sheeps (Ulum, Paramitha, Muttaqin, Utami, & Utami, 2013), domestic cats (Ulum et al., 2017), dogs (Davidson & Baker, 2009a) and the bottlenose dolphins (Brook, 2001). Ultrasound technology has been extensively used for monitoring ovarian activity in wild animal ungulates (Sontakke, 2017), wild cats (Malandain et al., 2011; Pelican, Wildt, Pukazhenthi, & Howard, 2006), ostriches (Pandian, Selvan, Rajini, Parthiban, & Karthickeyan, 2016); livestock such as camels (Kelanemer et al., 2015), buffalo (Gad, Mohamed, El‐Azab, Sosa, & Essawy, 2017), cattles (Scully et al., 2015), sheep/goats (Khan et al., 2016) and pigs (Da Silva, Laurenssen, Knol, Kemp, & Soede, 2017); pet animals such as dogs and cats (Davidson & Baker, 2009b); and animal models such as rabbits (El‐Gayar et al., 2014) and mice (Benevenuto et al., 2017). Ultrasound technology can be applied to analyse the anatomical structures of non‐living specimens as well such as human cadaveric skeletons without damaging tissues or organs (Karmakar et al., 2012), the lumbosacral cavity and the dorsal atlantoaxial ligaments of dog cadavers (Liotta et al., 2015; de Vicente & Hammond, 2017), and also to observe nerve blocks in camel head cadavers (El‐Shafaey, Hamed, Abdellatif, & Elfadl, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…dogs (Davidson & Baker, 2009a) and the bottlenose dolphins (Brook, 2001). Ultrasound technology has been extensively used for monitoring ovarian activity in wild animal ungulates (Sontakke, 2017), wild cats (Malandain et al, 2011;Pelican, Wildt, Pukazhenthi, & Howard, 2006), ostriches (Pandian, Selvan, Rajini, Parthiban, & Karthickeyan, 2016); livestock such as camels (Kelanemer et al, 2015), buffalo (Gad, Mohamed, El-Azab, Sosa, & Essawy, 2017), cattles (Scully et al, 2015), sheep/goats (Khan et al, 2016) and pigs (Da Silva, Laurenssen, Knol, Kemp, & Soede, 2017); pet animals such as dogs and cats (Davidson & Baker, 2009b); and animal models such as rabbits (El-Gayar et al, 2014) and mice (Benevenuto et al, 2017). there is no blood flow resulting in an image that looks more hyperechoic compared to those of living animal tissue (Dmitri, Lerman, & Halaszynski, 2011;Karmakar, 2017;Mattoon & Nyland, 2014).…”

Section: Sonograms and Photographs Of The Uterusmentioning

confidence: 99%

Sonoanatomy of female reproductive organ of Sunda porcupine (Hystrix javanica)

Wahid

Prawira

Nisa

et al. 2020

Anat Histol Embryol

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The conventional anatomical study of specimens requires cutting processes which destruct the limited specimens. A non-destructive method, namely an ultrasonography, can be used to assess the anatomical organ information of those specimens. The aim of this research is to analyse the macroanatomy of the female reproductive organ in the Sunda porcupine (Hystrix javanica), using ultrasonographical imaging. In this study, four formaldehyde-fixed reproductive organ specimens of the Sunda porcupine were used. A 10-12 MHz linear ultrasound transducer was utilized to provide an imaging format of both longitudinal and transversal views. Photographic images were then used as comparison with a sonographic image. The results show that the ultrasound image of the Sunda porcupine reproductive organ soft tissue was hypoechoic, the lumen and antrum follicles were anechoic, while atretic follicles and the mons pubis were hyperechoic. Generally, the size of the organ was not significantly different between photographical and ultrasonographical imaging (p > .05). In conclusion, ultrasound images can be utilized for anatomical studies of the Sunda porcupine reproductive organs without destructing the specimen.

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Monitoring and controlling ovarian activities in wild ungulates

Cited by 19 publications

References 98 publications

Opportunities and challenges associated with fecal progesterone metabolite analysis

Opportunities and challenges associated with fecal progesterone metabolite analysis

Parasite intensity drives fetal development and sex allocation in a wild ungulate

Sonoanatomy of female reproductive organ of Sunda porcupine (Hystrix javanica)

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