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.

Influence of mating pressure and season on the semen characteristics of rams

1976 ◽  
Vol 22 (3) ◽  
pp. 371-378 ◽  
Author(s):  
T. Tomkins ◽  
M. J. Bryant
Keyword(s):  
Rate Of Change ◽  
High Fertility ◽  
Sperm Density ◽  
Abnormal Sperm ◽  
Semen Characteristics ◽  
Live Sperm ◽  
Artificial Vagina

SUMMARYTwo groups of 4 Suffolk rams were each subjected to mating pressures of 90 ejaculates (High) and 45 ejaculates (Low) over a 3-day period during summer and autumn. Every sixth (High) or every third (Low) ejaculate was collected into an artificial vagina and assessed for volume, sperm density, total sperm per ejaculate, motility and percentage of live and abnormal sperm.There was a general lowering of semen quantity and quality with successive ejaculations. Rate of change of the various measures was greater on the High than on the Low mating pressure. Volume and percentage of live sperm showed a greater decline, and percentage of abnormal sperm a greater increase, during the autumn than during the summer. Density showed a greater decline in summer than in autumn.The significance of the changes in semen characteristics observed is considered in relation to requirements for high fertility after pro-gestagen treatment.

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 Comparison of semen characteristics between indigenous and Amo breeds cockerel of Gombe State, Nigeria

2019 ◽  
Vol 15 (2-1) ◽  
pp. 303-306
Author(s):  
Tijjani Haruna Usman ◽  
Saleh Mohammed Sir ◽  
Ma’aruf Bashir Sani
Keyword(s):  
Semen Quality ◽  
Sperm Concentration ◽  
Progressive Motility ◽  
Indigenous Breed ◽  
Normal Sperm ◽  
Abnormal Sperm ◽  
Significant Difference ◽  
Semen Characteristics ◽  
Genetically Improved ◽  
Abdominal Massage

The experiment was carried out to compare the semen characteristics of indigenous and Amo strains of cockerel at poultry unit of teaching and research farm of Federal University of Kashere, Gombe State, Nigeria. Semen samples were collected from nine indigenous and nine Amo breeds of cockerel at three days interval for two weeks using abdominal massage technique. Semen samples were examined macroscopically for semen colour, pH and ejaculation volume. Then, microscopic observation was carried for sperm concentration, mass motility, progressive motility, live and dead sperms percentage, normal and abnormal sperm, all for semen characteristics. The results showed a significant difference (P ≤ 0.05) between mass motility, progressive motility, sperm concentration and head defects of 4.85 ± 0.27 to 4.37 ± 0.19, 95.13 ± 0.43 to 81.63 ± 1.15%, 4.93 ± 1.84 to 3.40 ± 1.07×109/ml and 2.96 ± 0.17 to 3.44 ± 0.12% for indigenous and Amo breeds of cockerel, respectively. There were no significant differences observed as semen colour, ejaculate volume, semen pH, live / dead normal sperm neck (mid-piece), tail defects and sperm total abnormalities were found to be 2.85 ± 0.07 to 2.00 ± 0.090.21 ± 0.17 to 0.20 ± 0.02 /ml, 88.85 ± 0.58 to 72.70 ± 0.54% /ml, 11.14 ± 0.58 to 27.29 ± 0.54%, 81.00 ± 0.78 to 66.22 ± 0.61%,9.03 ± 0.42 to 13.96 ± 0.47%, 9.70 ±  to 13.00 ± 0.30 and 21.70 ± 0.59 to 30.40 ± 0.53% for the indigenous and Amo breed groups of cockerel, respectively. It was concluded that semen quality characteristics could be differed between genetically improved (Amo strain) and indigenous breed of cockerels.

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.

scholarly journals Comparative study on the semen quality characteristics of parthenotes and parent toms reared in Nsukka

2020 ◽  
Vol 46 (5) ◽  
Author(s):  
F. U. Udeh ◽  
I. J. Ohagenyi ◽  
N. E. Ikeh ◽  
M. O. Onodugo ◽  
V. C. Udeh ◽  
...  
Keyword(s):  
Sperm Cell ◽  
Semen Quality ◽  
Sperm Concentration ◽  
Quality Characteristics ◽  
Semen Parameters ◽  
Motile Sperm ◽  
Semen Collection ◽  
Normal Sperm ◽  
Abnormal Sperm ◽  
Significant Difference

The study was conducted to evaluate the semen quality characteristics of turkey parthenotes and parent toms. A total of twenty-four turkeys were used for the study. These comprised of twelve parthenotes toms and twelve parent toms. Parthenotes are male turkeys produced through parthenogenesis. The toms were subjected to abdominal massage techniques for semen collection. Semen collection was done twice per week and analyzed for volume, motility, sperm concentration, like sperm, abnormal sperm, normal sperm, dead sperm, total sperm/ejaculates and total motile sperm cells. The results showed that there were significant differences (p<0.05) in semen volume, sperm concentration, normal sperm cell, abnormal sperm and total motile sperm with mean values being 0.35mL, 1.74x109/mL, 97.80%, 2.20%, 1.68x1012 and 0.41ml, 1.50x109/mL, 94.00%, 6.00% and 1.42x1012, respectively for both parthenotes and parent toms. However, semen parameters such as motility, live sperm cell, dead sperm cell and total sperm/ejaculate showed no significant difference (p>0.05) with values of 96.7%, 97.7%, 2.30% and 6.07x109 for parthenotes toms and 93.20%, 98.50%, 1.50% and 6.23x109 for parent toms. It was observed from the results that turkey parthenotes possess good quality semen characteristic and therefore, recommended for use in poultry industry for turkey production.

scholarly journals The effects of propofol and midazolam on rat spermatogenic parameters

2020 ◽  
Vol 72 (5) ◽  
pp. 1727-1730
Author(s):  
S. Celaleddin ◽  
K. Volkan
Keyword(s):  
Veterinary Medicine ◽  
Statistical Difference ◽  
The Other ◽  
Control Group ◽  
Sperm Retrieval ◽  
Midazolam Group ◽  
Sperm Density ◽  
Anesthetic Agents ◽  
Abnormal Sperm ◽  
Motility Rate

ABSTRACT There is a need for various anesthetic agents to obtain sperm in the field of human and veterinary medicine. Propofol and midazolam are among the most preferred among these agents. The aim of this study was to determine how sperm paramaters are affected according to the anesthetic agent used. Propofol (2mg/kg) and midazolam (3,5-7,5mg/kg) were administered twice a day (morning-evening) for one week. As a result of this study, there was no statistical difference in sperm density and abnormal sperm rates (respectively P=0,673, P=0,479). Sperm motility rates are similar in the control and propofol groups, while the motility rate in the midazolam group is statistically lower. (Control group %85 - Midazolam group %68.75 - Propofol group %83.75), (P<0.05). As a result of this study, the confidence interval of propofol was higher than the other anesthetic agents used for sperm retrieval.

Semen Collection Interval and Semen Characteristics of Ostrich (Struthio camelus)

2017 ◽  
pp. 1
Author(s):  
Chinnadurai Pandian ◽  
Shanmugam Selvan ◽  
Robert Rajini ◽  
Monoharan Parthiban ◽  
Kanniappan Karthickeyan
Keyword(s):  
Struthio Camelus ◽  
Semen Collection ◽  
Semen Characteristics

Seasonal fluctuations in the sexual activity of Awassi, German Mutton Merino, Corriedale, Border-Leicester and Dorset Horn rams:II. Seasonal changes in semen characteristics

1965 ◽  
Vol 64 (1) ◽  
pp. 121-125 ◽  
Author(s):  
D. Amir ◽  
R. Volcani
Keyword(s):  
Sexual Activity ◽  
Seasonal Variations ◽  
Seasonal Changes ◽  
Seasonal Fluctuations ◽  
Sperm Density ◽  
Semen Volume ◽  
Semen Characteristics

Semen characteristics of local and imported rams were studied over a period of 2 years.Awassi and Border-Leicester rams with regular Awassi and Border-Leicester rams with regular semen collections throughout the year showed definite seasonal variations in the volume and number of sperms in their ejaculates: maximum levels during the autumn and minimum during the spring months. The sperm density reached its maximum during the spring and its minimum during the autumn as a result of the opposite changes of the semen volume. In the rams without regular semen collections, as those kept in the flock, these seasonal changes were not distinct. In the imported rams from breeds without a

scholarly journals EFFECT OF ADDING PENTOXIFYLLINE AND NITRIC OXIDE TO TRIS EXTENDER ON SOME POST-CRYOPRESERVED SEMEN ATTRIBUTES OF HOLSTEIN BULLS

2020 ◽  
Vol 51 (2) ◽  
pp. 619-628
Author(s):  
Mohammed & et al.
Keyword(s):  
Nitric Oxide ◽  
Plasma Membrane ◽  
Membrane Integrity ◽  
Control Group ◽  
Plasma Membrane Integrity ◽  
Abnormal Sperm ◽  
Semen Characteristics ◽  
Holstein Bulls ◽  
Time Periods ◽  
Live Sperm

This study was aimed to explore the effect of adding pentoxifylline (PTX) and nitric oxide (NO) to Tris extender on some post-cryopreserved semen attributes of Holstein bulls for different preservation periods (cooling at 5◦C, 48 hrs., 1, 2 and 3 months post cryopreservation, PC). Seven Holstein bulls of 2.5-3 years old were used in the current study during the period from 20th November, 2017 to 20th August, 2018. Pooled semen was equally divided into three groups within one experiment. PTX (0.192 g / 100 ml extender) and NO (0.018 g / 100 ml extender) were added to Tris extender and comparisons in response were made with the control group (Tris extender, C). The PTX group exhibited greater (P≤ 0.01) sperm's cell individual motility percentage as compared with the C group at cooling (5ºc) and 48 hr PC periods, while, PTX and NO groups were superior in these percentages at the remaining PC periods than C group. Excluding data of 2 months PC, greater (P≤ 0.01) live sperm percentage was observed in PTX and NO groups in comparison with the C group at all preservation periods. Lesser (P≤ 0.01) abnormal sperm percentage were noticed for PTX and NO groups as compared with the C group at all preservation time periods. The PTX and NO groups exhibited greater   (P≤ 0.01) acrosome and plasma membrane integrity percentages in comparison with the C group at all preservation time periods. In conclusion, adding PTX and NO to Tris extender enhanced some of  PC semen characteristics of Holstein bulls at different preservation periods.

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