Effect of semen collection frequency on seasonal variation in sexual behaviour, testosterone, testicular size and semen characteristics of tropical hair rams (Ovis aries)

2007 ◽  
Vol 39 (4) ◽  
pp. 271-277 ◽  
Author(s):  
V. Aguirre ◽  
A. Orihuela ◽  
R. Vázquez
Keyword(s):  
Seasonal Variation ◽  
Sexual Behaviour ◽  
Ovis Aries ◽  
Semen Collection ◽  
Semen Characteristics ◽  
Testicular Size

Orchiectomy in Testudo species: technical aspects and effect on courtship behaviour

2019 ◽  
Vol 184 (18) ◽  
pp. 555-555 ◽  
Author(s):  
Jean-Michel Hatt ◽  
Maya Kummrow ◽  
Sandra Wenger ◽  
Marcus Clauss
Keyword(s):  
Seasonal Variation ◽  
Body Mass ◽  
Sexual Behaviour ◽  
Courtship Behaviour ◽  
Group Housing ◽  
Partial Reduction ◽  
Same Sex ◽  
Technical Aspects ◽  
Testicular Size

Courtship behaviour of tortoises includes biting, ramming, chasing, same-sex sexual behaviour, and it commonly is excessive in European tortoise species kept as pets. As a result, males are kept individually. To assess the effect of orchiectomy on excessive courtship behaviour in European tortoises, 50 tortoises (Testudo graeca, T hermanni and T marginata) underwent endoscopically assisted orchiectomy from April through September 2013 to 2017. Statistical analyses were performed in relation to species, body mass, testicular size and season and owners were invited to fill out a follow-up questionnaire. Body mass of the tortoises ranged from 334 to 2645 g (mean 1056 g) and the age from 5 to estimated 60 years. Testicular length ranged from 1.4 to 7.0 cm (mean 2.7 cm) and testicular mass from 0.6 to 12.6 g (mean 3.9 g). A complete or partial reduction (allowing group-housing) of the excessive courtship behaviour was noted by 95 per cent of owners and 59 per cent of the owners reported a noticeable change of behaviour within a month of surgery. Given the seasonal variation in testicular size, the best period for castrations in male European tortoises is shortly after brumation (April, May), when testes are proportionally smaller.

scholarly journals SEASONAL EFFECT ON SEMEN CHARACTERISTICS OF MURRAH BUFFALO BULLS RAISED UNDER TROPICAL CLIMATE

2019 ◽  
Vol 13 (3) ◽  
Author(s):  
Nurul Isnaini ◽  
Tri Harsi ◽  
Devi Maharani
Keyword(s):  
Seasonal Variation ◽  
Rainy Season ◽  
Sperm Concentration ◽  
Dry Season ◽  
Seasonal Effect ◽  
Murrah Buffalo ◽  
Semen Collection ◽  
Semen Volume ◽  
Semen Characteristics ◽  
Sperm Output

This study was carried out to evaluate the seasonal variation on semen characteristics of Murrah buffalo bulls in Indonesia. A total of three Murrah buffalo bulls were included in this study. The semen was collected once a week during the rainy season (from January to April and from October to December) and the dry season (from May to September). Immediately after collection, the semen volume, sperm concentration, total sperm output, individual motility, post-thawing motility, and straw production were evaluated. The results showed that the season did not change (P0.05) the semen volume, individual motility, and post-thawing motility. However, sperm concentration, total sperm output, and straw production were decreased in the dry season (P0.05) as compared to the rainy season. In conclusion, several semen characteristics of Murrah buffalo bulls may vary depending on the season of collection. The semen collection during the rainy season is more profitable than the dry season.

Effect of semen collection frequency on the semen characteristics of dromedary camels

2018 ◽  
Vol 197 ◽  
pp. 145-153 ◽  
Author(s):  
S. Al-Bulushi ◽  
B.M. Manjunatha ◽  
R. Bathgate ◽  
J.P. Rickard ◽  
S.P. de Graaf
Keyword(s):  
Dromedary Camels ◽  
Semen Collection ◽  
Semen Characteristics

scholarly journals The Comparison of Semen Collection in Electroejaculation, Rectal Massage and Combination of Both Methods in the Critically Endangered Malayan Pangolin, Manis javanica

Animals ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 1948
Author(s):  
Reza Tarmizi ◽  
Yap Keng Chee ◽  
Symphorosa Sipangkui ◽  
Zainal Zahari Zainuddin ◽  
Wan-Nor Fitri
Keyword(s):  
Standard Deviation ◽  
Progressive Motility ◽  
Semen Collection ◽  
Significant Difference ◽  
Semen Characteristics ◽  
Manis Javanica ◽  
Consistent Method ◽  
The Mean ◽  
Genetic Pool ◽  
Collection Methods

This article describes the semen characteristics from different collection methods between captive and confiscated Malayan pangolins, Manis javanica. Semen was collected from 15 pangolins; two captive and 13 confiscated individuals at the mean weight of 9.36 ± 1.94 kg. The three semen collection methods employed were electroejaculation, rectal massage and a combination of both techniques. The semen characteristics (mean ± standard deviation) of the Malayan pangolin are volume (73.75 ± 144.57 µL), pH (7.63 ± 0.53), spermatozoa concentration (997.19 ± 728.98 × 106 /mL), total motility (59.60% ± 30.00%), progressive motility (48.95% ± 30.93%), mass motility (3.50 ± 1.50) and live spermatozoa (80.25% ± 13.45%). There was no significant difference in semen characteristics between the three collection methods. The percentages of live spermatozoa were significantly different, suggesting better samples from captive compared to confiscated animals. However, there was no significant difference in spermatozoa kinetics between the captive and confiscated samples, suggesting the potential of utilizing confiscated individuals for gamete recovery to conserve the genetic pool of pangolins. All three methods of semen collection were successfully performed in pangolins and should be considered; however, electroejaculation remains the most consistent method of obtaining semen from the species.

Behaviour and seasonal variation in heart rate in domestic sheep, Ovis aries

1988 ◽  
Vol 36 (1) ◽  
pp. 35-43 ◽  
Author(s):  
N.M. Baldock ◽  
R.M. Sibly ◽  
P.D. Penning
Keyword(s):  
Heart Rate ◽  
Seasonal Variation ◽  
Ovis Aries ◽  
Domestic Sheep

Studies on the number of ewes joined per ram for flock matings under paddock conditions. II. The effect of mating on semen characteristics

1968 ◽  
Vol 19 (6) ◽  
pp. 1043 ◽  
Author(s):  
RJ Lightfoot
Keyword(s):  
Similar Extent ◽  
Sperm Density ◽  
Semen Collection ◽  
Abnormal Sperm ◽  
Semen Characteristics

Semen characteristics were studied prior to and during the paddock joining of rams to varying numbers of ewes in a series of three experiments. A marked fall in ejaculate volume, sperm density, and their product, total number of sperm per ejaculate to levels of c. 0.3 ml, 1.5 x l09 sperm/ml, and 0.45 x l09 total sperm respectively occurred during the first 4 days of joining. Although there were large differences in the number of ewes joined per ram (25 to 100) and consequently the number of ewes served per ram per day, the depression in these semen characteristics occurred to a similar extent in all rams during the first 2 weeks of mating. By examining the data for all collections throughout the joining period, however, highly significant negative correlations were obtained for ejaculate volume, sperm density, and total number of sperm per ejaculate in each case with the number of ewes served during the 4 days preceding semen collection. Increases in the proportion of abnormal sperm were found sporadically in the ejaculates of rams during joining. Rams 2½ years old produced significantly more sperm per ejaculate before, during, and after the 6 week joining period than rams 1½ years old.

Seasonal variation in semen characteristics of Friesian bulls in Iraq

1968 ◽  
Vol 71 (1) ◽  
pp. 37-40 ◽  
Author(s):  
F. Dessouky ◽  
K. H. Juma
Keyword(s):  
Seasonal Variation ◽  
Volume Density ◽  
Abu Ghraib ◽  
Experiment Station ◽  
Semen Characteristics ◽  
Mass Activity ◽  
Positive Correlations

SummaryA total of 1659 ejaculates was collected from four Friesian bulls imported from Europe and ten of their offspring born in Iraq while in regular artificial service at the Abu-Ghraib Experiment Station. The work covered a period from 1 January 1965 to 30 June 1967.The five semen characteristics, volume, density, mass activity, individual motility and pH were studied and the influence of age of bull and season on these characters was investigated. The relationships between the characters were also investigated.Deterioration was observed in volume of ejaculate, density, mass activity and individual motility in the Iraqi Friesians. Influence of season on all semen characters lacked significance with the exception of mass motility in the European Friesian bulls (P < 0·05). Highly significant positive correlations were found between most of the characters studied.

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