Comparison of conventional and computer-assisted semen analysis in cockatiels (Nymphicus hollandicus) and evaluation of different insemination dosages for artificial insemination

The process of cryopreservation of bull semen in liquid nitrogen at −196°C is usually carried out after 3 to 6 h of refrigeration at 4°C post-collection. To guarantee the quality of the final product, the frozen straws are evaluated after cryopreservation. The seminal samples are usually stabilized during 48 h before being analyzed (Hafez, Reproduction and Artificial Insemination in Animals, 1989); this would retard the possible commercialization. The objective of the present study was to determine motility parameters and viability of semen doses stabilized by 1 h or more than 48 h in liquid nitrogen at −196°C. A total of 122 ejaculated from 23 different adult bulls (Angus, Brangus, Braford, and Hereford) were evaluated in an artificial insemination center between January and April 2005. The semen was diluted in a semi-defined semen extender (Andromed, Minitub, Germany) and frozen in an automatic freezer (Digicool, IMV, France). Parameters of velocity average path (VAP, μm/s), velocity straight line (VSL, µm/s), amplitude lateral head (ALH, µm), linearity (LIN, %), percentage of rapid cells (RAPID, %), and viability (VIA, %) were determined by Computer Assisted Semen Analysis (CASA, HTM-ceros 12.1, Berkeley, CA, USA). The obtained results were analyzed statistically with T Student and are summarized in Table 1. The results indicate that there is no difference in the velocity of the spermatozoa evaluated 1 h or 48 h post-frozen. There is no difference in VAP, VSL, movement of amplitude lateral head (ALH), or linearity (LIN). The percentage of viable spermatozoa was not affected in either group. Statistical analysis indicates that there is no difference (P > 0.05) in any of the evaluated parameters. The results demonstrate that spermatic motility and viability of frozen bull semen could be evaluated before 48 h post-frozen. This allows reduction of the time between freezing and evaluation and immediate availability of the bull straws. Table 1. Parameters of motility and viability at 1 h vs. 48 h of post-frozen stabilization time This research was supported by Centro Genético Bovino EOLIA S.A.

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7 HETEROSPERMIC INSEMINATION AT TWO SPERM CONCENTRATIONS IN TIMED AI: CASA SEMEN PARAMETERS AND PREGNANCY RATES

Reproduction Fertility and Development ◽

10.1071/rdv17n2ab7 ◽

2005 ◽

Vol 17 (2) ◽

pp. 154 ◽

Cited By ~ 1

Author(s):

A. Albrecht ◽

R. Cavia ◽

G. Larraburu ◽

F. Garcia Migliaro ◽

G. Brogliatti

Keyword(s):

Artificial Insemination ◽

Semen Analysis ◽

Pregnancy Rates ◽

Semen Parameters ◽

Computer Assisted ◽

High Concentration ◽

Bull Semen ◽

Motile Cells ◽

Timed Artificial Insemination ◽

Motility Parameters

The latest entry in the field of semen evaluation is computer assisted semen analysis (CASA). Heterospermic insemination has been used to increase pregnancy rates from low fertile bulls. The objective of this study was to evaluate, with the aid of CASA, heterospermic semen characteristics and pregnancy rates using different concentrations of bull semen in a timed artificial insemination protocol. Semen was collected from two bulls of known fertility by artificial vagina and all CASA motility parameters were evaluated individually and combined. Straws were filled using a semi-defined semen extender (Andromed, Minitüb, Tiefenbach, Germany) as follows: single bull A and single bull B (12 × 106 of progressive motile cells after thawing); Mixed bull semen: A + B (12 × 106 of progressive motile cells after thawing) and Supermix bull semen: A + B (28 × 106 of progressive motile cells after thawing). All cows received a P4 intravaginal device (DIB, Syntex, Argentina) and 2 mg of EB i.m. (Syntex) on Day 0, 500 mg cloprostenol (Estroplan, Syntex) at the time of DIB removal (Day 8), and 1 mg EB i.m. on Day 9. Fixed-time insemination (FTAI) was performed at 52 to 56 h after DIB removal. A total of 249 cows were randomly allocated to be inseminated with bulls A and B (n = 76), with Mixed A + B (n = 87), and with Supermixed A+B at a high concentration (n = 86) by a single inseminator. Pregnancy rates were evaluated at 38 days after insemination by transrectal ultrasonography. Means and standard deviations or each characteristic were calculated, compared, and statistically analyzed. The following sperm motility parameters were determined with the Ceros 12.1 sperm analyzer (Hamilton Thorne Biosciences, Inc., Beverly, MA, USA) on at least 1000 spermatozoa: velocity average path (VAP), velocity straight line (VSL), curvilinear velocity (VCL), amplitude lateral head (ALH), beat cross frequency (BCF), straightness (STR), linearity (LIN), and percentage of rapid or static cells. There were no significant differences (P > 0.05) in VAP, VSL, VCL, ALH, STR, or LIN. There was a numerically higher percentage of rapid cells in the Supermix semen. Pregnancy rate from bulls A and B was 61% and from Mixed A + B 60%, while that from Supermixed A + B was 69%. Results from the analysis indicate that semen concentration is an important element to be considered in a timed artificial insemination program. Numerically higher pregnancy rates were obtained with double semen concentration in the straw. More research is required to evaluate the interaction between different breeds within a timed artificial insemination program. This research was supported by Centro Genético Bovino de EOLIA sa and Syntex sa Argentina.

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The potential of sperm bovine protamine as a protein marker of semen production and quality at the National Artificial Insemination Center of Indonesia

Veterinary World ◽

10.14202/vetworld.2021.2473-2481 ◽

2021 ◽

pp. 2473-2481

Author(s):

Berlin Pandapotan Pardede ◽

Tulus Maulana ◽

Ekayanti Mulyawati Kaiin ◽

Muhammad Agil ◽

Ni Wayan Kurniani Karja ◽

...

Keyword(s):

Dna Fragmentation ◽

Artificial Insemination ◽

Semen Quality ◽

Semen Analysis ◽

Normal Function ◽

Computer Assisted ◽

Major Protein ◽

Protein Marker ◽

Acridine Orange Staining ◽

Frozen Semen

Background and Aim: Protamine (PRM) is the major protein in the sperm nucleus and plays an essential role in its normal function. Moreover, PRM has great potential as a protein marker of semen production and quality. This study aimed to assess the potential of sperm bovine PRM as a protein marker of semen production and quality in bulls at the National Artificial Insemination (AI) Center of Indonesia. Materials and Methods: The semen production capacity of each bull was collected from frozen semen production data at the Singosari AI Center for 6 months, and was then divided into two groups (high and low). A total of 440 frozen semen straws from six Limousin (LIM), six Friesian Holstein (FH), six Peranakan Ongole (PO), and four Aceh bulls aged 4-5 years were used in the study. The frozen semen was used to measure the concentration of PRM1, PRM2, and PRM3 using the enzyme immunoassay method. The frozen semen was also used to assess the quality of the semen, including progressive motility (PM) through computer-assisted semen analysis, sperm viability through eosin–nigrosin analysis, and the DNA fragmentation index through Acridine Orange staining. Results: PRM1 was significantly higher in all bull breeds included in the study (p<0.00), followed by PRM2 (p<0.00) and PRM3 (p<0.00). PRM1 significantly affected semen production in LIM, FH, PO, and Aceh bulls (p<0.05). Moreover, PRM2 significantly affected semen production only in FH and Aceh bulls (p<0.05), whereas PRM3 affected this parameter in PO and Aceh bulls exclusively (p<0.05). Consistently and significantly, PRM1 was positively correlated with the PM and viability of sperm and negatively associated with its DNA fragmentation in LIM, FH, PO, and Aceh bulls (p<0.05; p<0.01). The correlation analysis between PRM2 and PRM3 and semen quality parameters varied across all bull breeds; some were positively and negatively correlated (p<0.05; p<0.01), and some were not correlated at all. Conclusion: PRM1 has excellent potential as a protein marker of semen production and quality in bulls at the National AI Center of Indonesia.

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Additional value of computer assisted semen analysis (CASA) compared to conventional motility assessments in pig artificial insemination

Theriogenology ◽

10.1016/j.theriogenology.2011.05.040 ◽

2011 ◽

Vol 76 (8) ◽

pp. 1473-1486.e1 ◽

Cited By ~ 33

Author(s):

M.L.W.J. Broekhuijse ◽

E. Šoštarić ◽

H. Feitsma ◽

B.M. Gadella

Keyword(s):

Artificial Insemination ◽

Semen Analysis ◽

Computer Assisted ◽

Additional Value

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Study of antibiotics and symbiotic effects on sperm quality using the CASA system

Veterinarska stanica ◽

10.46419/vs.53.4.2 ◽

2021 ◽

Vol 53 (4) ◽

Author(s):

Ahmed El Bachir Bouchicha ◽

Ammar Kalem ◽

Nora Mimoune ◽

Sohaib Djouadi ◽

Djamel Khelef ◽

...

Keyword(s):

Artificial Insemination ◽

Experimental Approach ◽

Negative Impact ◽

Sperm Quality ◽

Semen Analysis ◽

Future Research ◽

Control Group ◽

Computer Assisted ◽

Synergistic Activity

The objective of the current work was to study in vitro sperm quality after antibiotics and symbiotic administration and to evaluate treatment administered before insemination with the aim of reducing artificial insemination failures in goats. This experimental study was carried out at the Animal Reproduction Biotechnology Laboratory (Blida, Algeria). Semen analysis was performed using the Computer-assisted sperm analysis system. In the first experimental approach, we used the antibiotics most commonly administered in the veterinary field for the treatment of subclinical endometritis. A total of eight antibiotics were studied. Each antibiotic tested was co-incubated with frozen goat semen brought from the Centre for Artificial Insemination and Genetic Improvement. For the second experimental approach, we incubated semen with a symbiotic (Symbiovéba). Finally, we selected two antibiotics among those used, namely colistin and cotrimoxazole, and these were co-incubated with the symbiotic and the semen, to examine possible combinations of antibiotics with symbiotics in the treatment and prevention of uterine infections (broad spectrum synergistic activity). Antibiotics have been shown to have a detrimental effect on the sperm cell, by decreasing sperm motility. The average value calculated on all antibiotics was 18% (as opposed to initial motility of 78% in the control group), with an alteration of the linear speed that would have a negative impact on fertilization. On the other hand, symbiotics had a beneficial effect on spermatozoa motility and vitality. The combination of the symbiotic and colistin proved to be very promising. In conclusion, the use of symbiotics in the treatment of subclinical endometriosis at the time of goat insemination is beneficial, and requires greater attention in future research.

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Sistemas de análisis computadorizado de semen en la reproducción animal

Agronomía Mesoamericana ◽

10.15517/ma.v29i2.30613 ◽

2018 ◽

Vol 29 (2) ◽

pp. 469

Author(s):

Anthony Valverde Abarca ◽

Mónica Madrigal Valverde

Keyword(s):

Normal Distribution ◽

Artificial Insemination ◽

Semen Analysis ◽

Computer Assisted ◽

Considerable Variability ◽

Animal Reproduction ◽

Livestock Species ◽

The Relationship ◽

Sperm Population ◽

Issue Reports

Computer-assisted semen analysis (CASA) is used in animal reproduction with the objective of evaluating spermquality, quickly and reliably. Currently, artificial insemination centers must have reliable and objective systems thatensure the reliability of reproductive data. The aim of this paper was to review computer-assisted semen analysisin livestock species. The use of CASA systems replace routine quality analyzes that introduce biases and leads to different inaccuracy degrees. In addition, if intrinsic limitations of microscopy or sperm with different motilitypatterns are considered, it is most likely that considerable variability will be introduced which will have an impact on the objectivity of the estimation. At first, this type of technology was inaccessible, but they are currently used routinelyin most research laboratories for the evaluation of sperm samples of different species of zootechnical interest..Computerized techniques are able to issue reports with a high number of characteristics, to minimize the subjectivefactor of routine semen analysis, and to ensure a better correlation with the fertilizing capacity of spermatozoa by the relationship between sperm motility and functional competence. The use of CASA systems together with multivariatestatistical analysis have demonstrated the existence of kinetic and morphometric subpopulations in ejaculates ofdifferent species, eliminating the idea that ejaculates are homogeneous, formed by a single sperm population with normal distribution.

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Влияние биологической полноценности спермы быков-производителей канадской селекции на репродуктивные показатели коров отдельного стада

Аграрная Россия ◽

10.30906/1999-5636-2017-2-18-21 ◽

2017 ◽

pp. 18-21

Author(s):

Александр Александрович Некрасов ◽

Николай Александрович Попов ◽

Байлар Садраддинович Иолчиев

Keyword(s):

Semen Analysis ◽

Computer Assisted

Исследовано влияние качества спермы быков-производителей на репродуктивные показатели стада. Материалом для исследования послужила замороженно-оттаянная сперма быков-производителей канадской селекции (n = 6), которую использовали для осеменения коров и телок на ферме «Дубровицы» ФГУП «Кленово-Чегодаево». Концентрацию и подвижность сперматозоидов оценивали с помощью компьютерной технологии Computer-assisted semen analysis (CASA). Состояние хроматина в сперматозоидах изучали методом акридин-оранжевого теста с флуоресцентной микроскопией. Морфологию и целостность акросом оценивали с использованием Дифф-Квик окраски. Всего на ферме «Дубровицы» плодотворно были осеменены 161 корова и 29 телок, от них получены 180 телят, из них 97 бычков и 83 телки. Установлено, что одним из биотических факторов, влияющих на репродуктивные показатели, является состояние ДНК в хроматине. От степени фрагментации ДНК в хроматине сперматозоидов зависит их оплодотворяющая способность и другие показатели фертильности быков-производителей. Уровень воспроизведения обусловлен репродуктивным потенциалом как коров, так и быков-производителей. Для комплексной оценки качества спермы быков-производителей необходимо использовать компьютерные технологии с привлечением максимального числа показателей, в том числе наследственного материала, содержащегося в сперматозоидах. Целесообразно при оценке быков-производителей вести учет благополучия отелов, выбытия коров после патологических отелов, абортов, мертворождаемости. Благополучие отелов способствует увеличению сроков последующего производственного использования коров, осемененных спермой быков-производителей, характеризующихся легкими отелами. Для достоверной оценки биологической полноценности спермы необходимо использовать дополнительный показатель, а именно степень фрагментации ДНК в хроматине. У быков-производителей с высокой степенью фрагментации ДНК получены низкие результаты оплодотворяемости.

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