scholarly journals Testicular Morphology of a Greater Indian Rhinoceros (Rhinoceros unicornis).

1996 ◽  
Vol 58 (10) ◽  
pp. 937-940 ◽  
Author(s):  
Hideki ENDO ◽  
Tadasu K. YAMADA ◽  
Nobuaki NAKAMUTA ◽  
Kentaro TANEMURA ◽  
Masamichi KUROHMARU ◽  
...  
Keyword(s):  
Rhinoceros Unicornis ◽  
Testicular Morphology

Preliminary Report of a Comparative Study of Seminiferous Tubular Epithelium from Rats Flown on Cosmos 1887 and SL3

1988 ◽  
Vol 46 ◽  
pp. 276-277
Author(s):  
Walter J. Sapp ◽  
D.E. Philpott ◽  
C.S. Williams ◽  
K. Kato ◽  
J. Stevenson ◽  
...  
Keyword(s):  
Space Flight ◽  
Physiological Response ◽  
Preliminary Report ◽  
Complete Recovery ◽  
Environmental Constraints ◽  
Tubular Epithelium ◽  
Testicular Weight ◽  
Testicular Morphology ◽  
Normal Offspring ◽  
Rats And Mice

Space flight, with its unique environmental constraints such as immobilization, decreased and increased pressures, and radiation, is known to affect testicular morphology and spermatogenesis. Selye, summarized the manifestations of physiological response to nonspecific stress and he pointed out that atrophy of the gonads always occurred. Reports of data collected from two dogs flown in space for 22 days (Cosmos 110) indicate that there was an increase of 30 to 70% atypical spermatozoa when compared to ground based controls. Seventy-five days after the flight the abnormalities had decreased to the high normal value of 30% and mating of these dogs after this period produced normal offspring, suggesting complete recovery. Effects of immobilization and increased gravity were investigated by spinning rats and mice at 2x g for 8-9 weeks. A decrease in testicular weight was noted in spun animals when compared to controls. Immobilization has been show to cause arrest of spermatogenesis in Macaca meminstrins.

The lives of three rhinoceroses exhibited in London 1790–1814

2015 ◽  
Vol 42 (2) ◽  
pp. 279-300 ◽  
Author(s):  
Kees Rookmaaker ◽  
John Gannon ◽  
Jim Monson
Keyword(s):  
Rhinoceros Unicornis ◽  
History Of ◽  
Drury Lane

The history of three living Indian rhinoceroses (Rhinoceros unicornis) exhibited at the Exeter ’Change and the adjoining Lyceum on the Strand in London is detailed. The animals were owned by three successive proprietors of the menagerie: Thomas Clark, Gilbert Pidcock and Stephen Polito. Clark's rhinoceros arrived on 5 June 1790 as a two-year-old from India, largely exhibited at the Lyceum, but shown at Windsor and Ascot races in June 1793 and elsewhere in England until his death in Cosham near Portsmouth (not Corsham) in July 1793. The skin was mounted, possibly bought by William Bullock and subsequently by the Royal Museum in Edinburgh. A painting by George Stubbs should show this animal, but a discrepancy in age and stature is discussed. Pidcock's rhinoceros was acquired in 1799, dying early in 1800 in Drury Lane, after acquisition by an agent of the German Emperor, Francis II. He is shown on token half-pennies issued by Pidcock, and sketched by artist Samuel Howitt. Polito's rhinoceros arrived in July 1810, toured England in 1811, and was sold to the continent in October 1814. Howitt incorporated this animal into his artwork.

Defining the impact of paternal diet on testicular morphology and apoptosis

2019 ◽  
Author(s):  
Nader Eid ◽  
Hannah Morgan ◽  
Charlene Rouillon ◽  
Adam Watkins
Keyword(s):  
Testicular Morphology ◽  
The Impact

Aromatase and 11β-hydroxysteroid dehydrogenase 2 localisation in the testes of pigs from birth to puberty linked to changes of hormone pattern and testicular morphology

2008 ◽  
Vol 20 (4) ◽  
pp. 505 ◽  
Author(s):  
A. Wagner ◽  
R. Claus
Keyword(s):  
Blood Plasma ◽  
Sertoli Cell ◽  
Germ Cells ◽  
Leydig Cells ◽  
Hydroxysteroid Dehydrogenase ◽  
Blood Collection ◽  
Testicular Development ◽  
Post Mortem ◽  
Cell Numbers ◽  
Testicular Morphology

Oestrogens and glucocorticoids are important for spermatogenesis and are regulated via aromatase for oestradiol synthesis and 11β-hydroxysteroid dehydrogenase 2 (11β-HSD 2) as an inactivator of cortisol. In the present study postnatal changes of these two enzymes were monitored together with testicular development and hormone concentrations. Pigs were assigned to three periods: Weeks 0–5, Weeks 5–11 or Weeks 11–17. In Period 1, groups of four piglets were killed after each week. Blood plasma and testes were sampled immediately post mortem. For Periods 2 and 3, groups of six pigs were fitted with vein catheters for daily blood collection. Testes from all pigs were obtained after killing. Levels of testosterone, oestradiol, LH, FSH and cortisol were determined radioimmunologically. The 11β-HSD 2- and aromatase-expressing cells were stained immunocytochemically. All hormones were maximal 2 weeks after birth. A rise of LH, testosterone and oestradiol occurred again at Week 17. FSH and cortisol remained basal. Parallel to the first postnatal rise, the presence of aromatase and 11β-HSD 2 in Leydig cells increased, together with germ and Sertoli cell numbers. Expression was low from 3 to 5 weeks, was resumed after Week 5 and was maximal at Week 17. The amount of 11β-HSD 2 in germ cells was greatest at birth, decreased thereafter and was absent after Week 3.

scholarly journals Brazil nut oil in diets for breeder cocks

2017 ◽  
Vol 40 ◽  
pp. 37472
Author(s):  
João Paulo Ferreira Rufino ◽  
Frank George Guimarães Cruz ◽  
Ramon Duque Melo ◽  
Julmar Da Costa Feijó ◽  
Lucas Duque Melo ◽  
...  
Keyword(s):  
Experimental Design ◽  
Rhode Island ◽  
Reproductive Performance ◽  
Polynomial Regression ◽  
Brazil Nut ◽  
Feed Conversion ◽  
Cholesterol Levels ◽  
Blood Ph ◽  
Semen Volume ◽  
Testicular Morphology

 This study aimed to evaluate the inclusion of Brazil nut oil in diets for breeder cocks on performance, semen analyses, biochemical serum profile and testicular morphology. Forty-two Rhode Island Red breeder cocks with 40 weeks of age were used. The experimental design was completely randomized consisting of seven levels of Brazil nut oil (0; 0.30; 0.60; 0.90; 1.20; 1.50 and 1.80%) in the diets. Data collected were evaluated by polynomial regression. Differences (p < 0.05) were detected in feed conversion, semen volume, motility, vigor, pH, swirling and concentration, in which the inclusion of Brazil nut oil in the diets improved the reproductive performance. Differences (p < 0.05) were also detected in the biochemical serum profile (triglycerides, cholesterol and blood pH); the inclusion of Brazil nut oil caused a large increase in blood triglycerides and cholesterol levels, consequently, changing the blood pH. The Brazil nut oil can be used as an energetic additive in diets given to breeder cocks, promoting better reproductive performance, without changing semen and testicular morphology, but altering the biochemical serum profile of the birds.   

Population genetic assessment of extant populations of greater one-horned rhinoceros (Rhinoceros unicornis) in India

2015 ◽  
Vol 61 (6) ◽  
pp. 841-851 ◽  
Author(s):  
Pranjal Kumar Das ◽  
Udayan Borthakur ◽  
Hridip Kumar Sarma ◽  
Bibhab Kumar Talukdar
Keyword(s):  
Population Genetic ◽  
Rhinoceros Unicornis ◽  
Genetic Assessment

scholarly journals Nutrient Analysis of Grass Species Consumed by Greater One-Horned Rhinoceros (Rhinoceros Unicornis) in Chitwan National Park, Nepal

2014 ◽  
Vol 2 (4) ◽  
pp. 402-408 ◽  
Author(s):  
S. Thakur ◽  
C.R. Upreti ◽  
K. Jha
Keyword(s):  
National Park ◽  
Mean Value ◽  
Grass Species ◽  
Systematic Sampling ◽  
Slight Variation ◽  
Sample Collection ◽  
Nutrient Analysis ◽  
Mean Values ◽  
Rhinoceros Unicornis ◽  
Chitwan National Park

The Greater One-horned Rhinoceros (Rhinoceros unicornis) is found almost exclusively in Nepal and North-Eastern India. There have beenonly a few studies made on the food and the nutrient compositions of fodder species preferred by The Greater One- horned Rhinoceros. Thepresent study identifies the nutrient content of the fodder species consumed by One-horned rhinoceros which would be helpful to develop proper strategies for rhinoceros food management. For this altogether 8 grass species which were most preferred by rhinoceros were collected from Chitwan National Park. Systematic sampling was applied for sample collection and collected samples were taken to the Animal Nutrition Laboratory, Khumaltar for nutrient analysis. Among all the collected species the highest OM% was seen in Faank (93.98 ± 0.88) while Ash% and CP% was found to be highest in Eragrastic Tenella (13.67 ± 2.92) and Phragmatic karka (11.94 ± 2.26) respectively. Lowest NDF% was again seen in Eragrastic tenella (76.76 ± 2.93) and lowest ADF% and ADL% were found in Mala dubo with mean values (43.50 ± 6.86) and (6.41 ± 2.16) respectively showing high digestibility of these grasses. There were only slight variation in the EE% of the grass species withhighest mean value of (3.702 ± 1.73) of Imperata cylindrical to lowest mean value of (1.722 ± 0.11) of Eragrastic tenella. Highest energy was found in Faank (4181.90 ±1.10) and Calcium content was seen highest in Cynodon dactylon (1.30 ± 0.83).DOI: http://dx.doi.org/10.3126/ijasbt.v2i4.11119 Int J Appl Sci Biotechnol, Vol. 2(4): 402-408 

scholarly journals Testicular Morphology and Sperm Motility in Cultured African Catfish (Clarias gariepinus) at Different Stages of Development

2016 ◽  
Vol 8 (3) ◽  
pp. 281-285 ◽  
Author(s):  
Chidozie Nwabuisi OKOYE ◽  
Udensi Maduabuchi IGWEBUIKE ◽  
Anietie Francis UDOUMOH ◽  
Chinadindu Tochukwu OKEREKE
Keyword(s):  
Sperm Motility ◽  
Clarias Gariepinus ◽  
Body Cavity ◽  
The Body ◽  
Sperm Cells ◽  
African Catfish ◽  
Testicular Weight ◽  
Testicular Morphology ◽  
The Mean ◽  
Somatic Index

Testicular morphology and sperm motility were evaluated in cultured Clarias gariepinus (n = 25) purposively assigned to five groups according to their age. The results showed that the testes were paired, elongated, dorso-ventrally flattened structures, situated in the caudal aspects of the body cavity. The mean length of both right and left testes increased linearly with age, being significantly (p < 0.05) higher at 6 months than at 4 and 5 months of age, and also significantly (p < 0.05) higher at 8 months than at 6 months of age, while the mean weight and organo-somatic index of the catfish testes increased linearly until 6 months of age, after which no significant (p > 0.05) increase in the testicular weight and organo-somatic index was observed. Unidirectional progressive movement of spermatozoa was detected in the milt of C. gariepinus at 6, 7 and 8 months of age, but sperm cells were non-motile at 4 and 5 months of age. Histological sections showed seminiferous lobules, whose germinal epithelia were characterized by many cysts enclosing clones of sperm cells. Each cyst enclosed a clone of sperm cells at an identical stage of spermatogenesis. Spermatids and spermatozoa were present in the lumen of the seminiferous lobule. The obtained results indicate that the morphology of the testes of C. gariepinus is similar to the testes of members of the order Siluriformes, but sexual maturity and production of motile spermatozoa may be achieved at 6 months of age in the African catfish.

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