• 한국가금학회지
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• 제40권3호
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• pp.171-178
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• 2013

본 연구는 닭 정액 동결 보존을 위하여 동결 보호제로 7%의 DMA, DMF 그리고 7.5%의 MA를 이용하여 동결 융해 후 정자의 생존율, 정상 첨체율 및 미토콘드리아의 활성도를 FACS를 이용하여 평가하고, 수정률과의 상관관계를 조사하고자 수행하였다. 닭 정액을 동결한 결과, DMF를 사용하였을 때 생존율은 $52.1{\pm}5.52%$로 DMA와 MA에 비해 유의적으로 높았으며(P<0.05), DMA $46.94{\pm}5.06%$, MA $36.56{\pm}4.66%$순으로 나타났다(P<0.05). 첨체막이 파열되고 죽은 정자는 이와 반대로 MA를 이용하여 동결한 정액이 $61.16{\pm}1.86%$로서 가장 높았고, DMA $47.48{\pm}1.9%$ DMF $36.56{\pm}1.42%$순으로 유의적 차이를 보였다(p<0.05). 정자 미토콘드리아 막이 손상되지 않은 생존 정자는 DMF를 이용하여 동결한 정액에서 $52.68{\pm}1.07%$로 가장 높게 나타났고, DMA $44.46{\pm}1.04%$, MA $38.36{\pm}1.88%$순으로 유의적 차이를 나타냈다(p<0.05). 7% DMF를 사용하여 동결하였을 때 수정률은 유의적인 차이가 없었지만, 생존율 및 미토콘드리아 활성도가 유의적으로 가장 높았으며, 정상 첨체율이 유의적으로 높았다. 이는 DMF를 이용한 닭 정자 동결법이 정자의 세포막과 첨체의 손상에 미치는 영향이 가장 낮은 동결 보호제인 것으로 사료된다.

• 한국동물위생학회지
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• 제18권3호
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• pp.1-12
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• 1995

To investigate effect of seeding on post-thaw motility and viability of canine spermatozoa, the semen from male dogs which had been proved to be fertile in the past were frozen and seeded during freezing process. Post-thaw motility and viability of canine sperm which were frozen and seeded were investigated according to different seeding temperatures of $-5^{\circ}C$, $-10^{\circ}C$, or $-l5^{\circ}C$ and also according to different concentration of glycerol of 2%, 5% and 10%. In addition, post-thaw motility of canine sperm frozen by direct freezing in a deep freezer or programmed freezing in a programmed cell freezer was investigated. Post-thaw motility of canine sperm was compared according to different seeding temperatures : The sperm seeded at $-5^{\circ}C$ showed considerably higher post-thaw motility than that of non-seeding, and that seeded at $-10^{\circ}C$, or $-l5^{\circ}C$, respectively, in 2% and 5% glycerol groups on both 2 and 7day after freezing(p<0.05). In 10% concentration of glycerol, the sperm seeded at each seeding temperature showed considerably higher post-thaw motility than that of non-seeding group on day 7 after freezing(p<0.01). Post-thaw viability of canine sperm was compared according to different seeding temperatures : The sperm seeded at $-5^{\circ}$ showed significantly higher post-thaw motility than that of non-seeding, and that seeded at $-10^{\circ}C$, or $-l5^{\circ}C$, in 5% and 10% glycerol groups on day 7 after freezing(p< 0.05). In comparison of post-thaw motility of canine sperm seeded according to different concentration of glycerol, 5% glycerol group and 10% glycerol group showed considerably higher post-thaw motility than 2% glycerol group without difference between those two groups in all seeding temperatures($-5^{\circ}C$, $-10^{\circ}C$ and $-l5^{\circ}C$) on day 2 and 7 after freezing(p<0.01). In comparison of post-thaw viability of canine sperm seeded according to different concentration of glycerol, 5% glycerol group and 10% glycerol group showed the same considerably higher post-thaw viability than 2% glycerol group on each thawing day(p<0.01). The canine sperm frozen and seeded by programmed freezing method showed considerably higher post-thaw motility than that frozen by direct freezing method in all different seeding temperatures($-5^{\circ}C$, $-10^{\circ}C$ and $-l5^{\circ}$). These results indicated that the higher post-thaw motility and viability was obtained in the spermatozoa seeded than that of non-seeding, that among different seeding temperatures of $-5^{\circ}C$, $-10^{\circ}C$ and $-l5^{\circ}C$, the sperm seeded at $-5^{\circ}C$ showed higher post-thaw motility and viability than the other temperatures, also among different concentrations fof glycerol of 2%, 5% and 10%, the sperm frozen and seeded in 5% and 10% concentration of glycerol showed higher post-thaw motility and viability than that in 2% of glycerol, and that the sperm frozen and seeded by programmed freezing method showed higher motility than that by direct freezing method.

• 한국수정란이식학회지
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• 제16권1호
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• pp.35-40
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• 2001

Artificial insemination (AI) with frozen or cooled semen is widely used in commercial fields of cattle and pig. Little is known about characteristics of canine sperm after freezing or cooling. For both practical and commercial goal, the canine semen treated with cooling and freezing should be carried out to exam the fundamentals, including sperm motility, survivability and fertilizing capacity. The aim of this study, thus, was to identify the effects of extended exposure to 4$0^{\circ}C$ on canine semen by motility, survivability, acrosomal changes following different duration. Fifteen ejaculates collected by digital manipulation twice per week from 3 dogs (Shih-Tzu) were divided to 16 aliquots after adding Tris-egg yolk (TE) buffer formulated by our laboratory, and cooled from 37 to 4$^{\circ}C$, by ramp rate of 0.6$^{\circ}C$/min. Each sample was evaluated by their motility, survivability and the acrosomal status at 0h (control), 2h, 12h and 1 d~10 d, respectively. The motility of spermatozoa was graded to 6 levels using the modified method of Seager. The survivability of sperm was assessed using an epifluorescence microscope after Fert/Light (Mole-cular Probes Inc.) staining. To estimate the proportion of the spermatozoa of intact acrosome, 200 spermatozoa were assessed in randomly selected fields, using epifluorescence microscope after FITC/PSA (Sigma) staining. At 2 h after cooling, the motility of most spermatozoa were assessed to be grade 0 and 1. At 12 h, high number of sperm were in grade 0 to 1, however, it was significantly (P<0.05) lower than that of 2 h. From 1 d to 4 d, ~50% of sperm was assessed to grade 0 to 1. On day 7, a little sperm were in grade 0 to 1. No sperm showed motility on day 10. Sperm motility was rapidly reduced by the percent of 10% of grade 0 to 1. From 2 h to 6 h, the number of live sperm was 90% and the sperm chilled for 10 days lived>50%. Acrosomal intact of spermatozoa exposed to 4$^{\circ}C$ for 2 h was 51%, supposed the sperm of control was 100%. Our results suggest that 1) this is easy to transfer and preservation for short periods 2) AI can be used by semen chilled for 6-Day.

• 한국수정란이식학회지
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• 제23권4호
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• pp.239-243
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• 2008

This study was conducted to investigate the effects of type of the sugar supplemented to the extender on the vigor, viability and intact acrosomal rates of frozen-thawed dog spermatozoa. The ejaculated semen was diluted with TRIS-citric acid extender containing 200mM TRIS, 73mM citric acid, 6% (v/v) glycerol, 20% (v/v) egg yolk, 1% (v/v) antibiotics (streptomycin/penicillin), 44 mM sugar, which was either glucose, fructose or glucose-fructose combination, and distilled water to make the final volume of 100ml. Extended semen samples were cooled at $4^{\circ}C$ for an hour, packaged in 0.25ml straws, equilibrated for 10 minutes in liquid nitrogen vapor, and frozen in liquid nitrogen. Samples were thawed by placing straws into $37^{\circ}C$ water for 120 seconds. After thawing, vigor, viability and intact acrosomal rates of frozen-thawed semen were compared according to type of sugar. No significant differences were observed between glucose and fructose groups. In addition, combination of the 2 sugars also did not show any significant differences in the vigor, viability and intact acrosomal rates. In conclusion, glucose and fructose were equally efficient as sugar supplements for freezing extender.

• Asian-Australasian Journal of Animal Sciences
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• 제19권12호
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• pp.1716-1721
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• 2006

The present study was conducted to observe the effect of osmolality of glycerolated TEST-yolk glycerol extenders on post-thawing sperm kinematics of ram spermatozoa of the native Malpura breed maintained in a semi-arid tropical environment. Good quality semen obtained from adult rams was pooled, split and diluted to 1,000 million spermatozoa per ml in complete TEST-yolk-glycerol extenders of 900, 1,200, 1,500 and 1,800 mOsm/kg osmolality. Diluted semen samples were loaded in 0.25 ml straws and cooled down to $-125^{\circ}C$ freezing temperature at the rate of $-25^{\circ}C$ per minute under controlled conditions before plunging into liquid nitrogen for storage. The thawing of straws was performed at $50^{\circ}C$ in a water bath for 10 seconds and sperm kinematics of the frozen-thawed spermatozoa were assessed by a computer-assisted sperm analysis technique. Osmolality of diluent had no significant effect on post-thawing % motility, % rapid, % medium and % slow moving frozen-thawed spermatozoa but significantly (p< 0.05) affected the % linearity and % straightness. The post-thawing % motility and % rapid motile spermatozoa were highest in samples extended in diluent of 1,500 mOsm/kg osmolality and lowest in 900 mOsm/kg. The curvilinear velocity of spermatozoa was significantly (p<0.05) higher for samples extended in 1,800 mOsm/kg, compared to those in 900 and 1,200 mOsm/kg, but the effect was not significantly different to those extended in diluent of 1,500 mOsm/kg osmolality. The study indicated that ram spermatozoa could tolerate a wide osmolality range for dilution in the complete TEST-yolk-glycerol extender for their cryosurvival. The highest recovery of motile spermatozoa following thawing was achieved in samples extended in the TEST-yolk-glycerol diluent of 1,500 mOsm/kg osmolality.

• Reproductive and Developmental Biology
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• 제34권1호
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• pp.41-46
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• 2010

The objective of this study was to evaluated the efficiency of sperm cryosurvival using each extenders Triladyl and LEY containing egg yolk to the cryopreservation of separated sperm by percoll in miniature pig. The ejaculated semen from miniature pig was separated by 65% percoll and un-separated sperm as a control before freezing. The freezing of diluted semen added with Triladyl containing egg yolk and LEY solution (solution I: 11% Lactose or Triladyl + egg yolk; solution II: solution I + glycerol + OEP). Analysis of sperm ability was estimated by viability, capacitation acrosome reaction using chlortetracycline (CIC) the morphologic abnormality and hypoosmotic swelling test(HOST). The groups were designed that as separated sperm by Percoll with Triladyl(ST) or LEY(SL) for cryopreservation. And unseparated sperm with Triladyl(UT) or LEY(UL). As a results, the viability was higher significantly(p<0.05) in ST, SL, UT than UL extender. The morphologic abnormality was measured significantly (p<0.05) lower in ST than other extenders. The AR-patterned in CTC analysis was measured significantly(p<0.05) lower in SL and UL than other extenders. In conclusion, using Triladyl extender resulted in viability and morphology of separated sperm by percoll that were effective than using LEY extender, but it resulted in capacitation acrosome reaction was lower than using LEY extender.

• Reproductive and Developmental Biology
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• 제37권3호
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• pp.97-102
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• 2013

The objective of this study was to develop of semen transport system for cryopreservation and fertility in bull sperm. The ejaculated semen were diluted with Triladyl containing 20% egg-yolk for transportation. Diluted semen was transported by three methods that there were wrapping tissue (Tissue), sinking under $30^{\circ}C$ water (Water) and sinking between warm water and air (Air) methods. Semen was transported within 2 hours in $0.3^{\circ}C$. For this study, the freezing of diluted semen were added with Triladyl containing 20% egg-yolk. And frozen-thawed sperm were estimated with SYBR14/PI double stain for viability, FITC-PNA/PI double stain for acrosome reaction analysis and Rhodamine123 double stain for mitochondrial intact assessment. In results, live sperm (SYBR+/PI-) in Air treatment group ($43.3{\pm}4.7%$) was significantly (p<0.05) higher than other treatment groups (Tissue: $16.3{\pm}2.7%$ and Water: $27.5{\pm}3.1%$), dying sperm (SYBR+/PI+) in Air treatment group ($55.6{\pm}4.7%$) was significantly lower than other treatment groups (Tissue: $77.6{\pm}3.2%$ and Water: $67.6{\pm}3.3%$) (p<0.05). Acrosome reaction in Air treatment group ($0.2{\pm}0.1%$) within live sperm (PI negative region) was significantly (p<0.05) lower than other treatment groups (Tissue: $0.7{\pm}0.2%$ and Water: $0.5{\pm}0.1%$), the acrosome reaction in Air treatment group ($28.6{\pm}2.8%$) within all sperm also was significantly lower than other treatment groups (Tissue: $44.2{\pm}1.8%$ and Water: $36.2{\pm}2.0%$) (p<0.05). And mitochondrial intact in Air treatment group within live ($97.1{\pm}0.4%$) and all ($61.9{\pm}3.3%$) sperm were significantly higher than other treatment groups (Tissue: $85.2{\pm}3.3%$, Water: $87.8{\pm}2.9%$ within live sperm and Tissue: $49.28{\pm}3.7%$, Water: $42.0{\pm}3.1%$ within all sperm) (p<0.05). Therefore, we suggest that transportation by sinking method between warm water and air was beneficial to improvement of fertility in frozen-thawed in bull semen.

• Asian-Australasian Journal of Animal Sciences
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• 제16권2호
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• pp.180-184
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• 2003

The intrauterine inseminator (IUI) was developed to provide the method of depositing dog semen into the uterine body instead of the vagina. The IUI consists of a vaginal endoscope, a balloon sheath, and injection catheter. When the endoscope is inserted into the vagina and the balloon expanded with air, the cervical os becomes visible so a injection catheter can be inserted through the cervix for deposition of the frozen-thawed semen. The efficacy of the IUI device was compared to intra-vaginal artificial insemination using semen that had been collected and frozen from pooled sperm-rich fraction of ejaculates collected from two Jindo dog donors. Aliquots of semen were extended with a Tris-egg yolk diluent, centrifuged, the seminal plasma removed, the pellet resuspended with the same diluent, and cooled to $5^{\circ}C$ over a 2 h period. A Tris-egg yolk-glycerol extender was added at $5^{\circ}C$; after 1 h, semen was loaded into 0.5 ml straws, and straws were frozen in LN vapor for 5 min, and immersed in LN for storage. The final sperm concentration for freezing was approximately $100{\times}10^{6}cells/ml$. The straws were thawed at $70^{\circ}C$ for precisely 6 sec, 1.5 ml Tris-egg yolk buffer at $38^{\circ}C$ added, and the 2 ml of thawed semen was used for a single insemination using the IUI device. Each bitch was inseminated at optimal insemination point, which was estimated by vaginal epithelial cells staining and progesterone concentration analysis. Use of the IUI device resulted in 21 of 26 females giving birth to 89 pups ($4.2{\pm}1.6$ pups per litter), while intra-vaginal AI resulted in 6 of 15 females whelping a total of 17 pups ($2.8{\pm}1.2$ pups per litter). We believe the IUI device is easier to use than previously described devices used for intrauterine insemination. In our experience the expansion of the balloon has a calming effect on the bitch that aids the inseminator. These results indicate that the IUI device was able to provide high fertility with 50 million frozen sperm per insemination and two inseminations.

• 한국가축번식학회지
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• 제23권2호
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• pp.127-132
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• 1999

본 연구는 소형견 정액의 원정액과 정장제거 정액의 일반성상, 채취분획별 및 단기보존시 정자의 생존성과 아울러 동결보존시의 정자의 생존성에 대해 조사하고자 수행하였다. 1. 원정액과 정장제거 정액에 saline 및 Tris-buffer를 희석 후 각각 일반성상 검사를 실시했을 때 원정액의 경우 정자농도는 5.07$\pm$2.32$\times$$10^{6}$cells/$m\ell$, 정자의 운동성은 95.42$\pm$2.65%, 기행정자수는 4.42$\pm$0.15%로 나타났으며, RSP(saline 및 Tris-buffer)군의 경우 정자농도는 4.69$\pm$3.27~4.25$\pm$3.65$\times$$10^{6}$cells/$m\ell$, 정자의 운동성은 91.17$\pm$3.85~88.52$\pm$3.85%, 기형정자수는 6.57$\pm$0.43~5.54$\pm$0.52%로 나타났다. 2. 분획별 채취 전정액중 제 1 분획에서는 정액량이 0.92$\pm$0.7$m\ell$, 정자농도는 4.57$\pm$0.78$\times$$10^{6}$cells/$m\ell$, 정자활력은 10.72$\pm$3,21%, 기형정자수는 5.50$\pm$0.70%로 나타났으며, 제 2분획에서는 정액량이 2.14$\pm$0.19$m\ell$, 정자농도는 2.01$\pm$0.12$\times$$10^{6}$cells/$m\ell$, 정자활력은 95.44$\pm$4.21%, 기형정자수는 4.31$\pm$0.53%로 나타났다. 또한, 제3 분획에서는 정액량이 2.66$\pm$0.23$m\ell$, 정자농도는 2.35$\pm$0.21$\times$$10^{6}$cells/$m\ell$, 정자활력은 90.71$\pm$2.63%, 기형정자수는 6.33$\pm$0.91%로 나타났다. 3. 원정액과 정장제거 정액을 4$^{\circ}C$ 와 2$0^{\circ}C$ 및 37$^{\circ}C$ 에서 각각 보존했을 때 보존시간별 정자의 활력은 2$0^{\circ}C$ 의 경우 1, 6, 13, 24, 30 및 40 시간에서 각각 98.51%와 98.32%, 86.32%와 92.15%, 83.71% 와 89.20%, 74.29% 와 82.08%, 52.98% 와 72.07%, 15.45% 와 60.02%, 2.41% 와 37.19% 의 정자활력을 나타내어 4$^{\circ}C$와 37$^{\circ}C$에 비해 높은 정자운동성을 나타냈다. 4. 제 2 분획 정액과 정장제거 정액을 각각 제 1차 및 제 2차 희석액으로 희석 평형 시킨 후 동결 융해했을 때 정자의 생존율은 각각 33.3$\pm$8.7, 54.7$\pm$9.5%로서 대조군의 15.4$\pm$5.2% 에 비해 높게 나타났다.

• Asian-Australasian Journal of Animal Sciences
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• 제14권11호
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• pp.1527-1533
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• 2001

Garole is a prolific, rare, less known and small size Indian sheep breed found in low and humid Sunderban region of West Bengal. Although information on stored Garole ram liquid semen upto 24 h is available, but there is a need to further investigate the short-term and long-term preservability of Garole ram semen for extensive utilization of this valuable germplasm by artificial insemination. The aim of the present study was to apply computer-assisted sperm analysis technique for assessing the motion characteristics of Garole ram semen stored (i) in liquid state at refrigeration temperature for short-term preservation upto 48 h and (ii) in frozen state at $-196^{\circ}C$ for long-term preservation after packaging in mini straws. Short-term preservation had a significant effect on motility (p<0.01) as the motility progressively decreased from 90.1% at 0 h to 85.5% and 73.2% after 24 and 48 h of storage, respectively. Although the decline in rapid moving sperms was also significant (p<0.01) on storage but the decrease was more pronounced at 48 h as compared to 24 h of storage period. Storage of chilled semen had also a significant effect on % linearity (p<0.05), % straightness (p<0.01), sperm velocities (p<0.01), amplitude of lateral head displacement (p<0.01) and beat frequency (pO.Ol) of spermatozoa. The replication had a significant effect for all the variables except average path and straight line velocity. However, the interactions of short-term storage and replication were non-significant for most of the variables except % of medium moving sperms, sperm velocities and beat frequency. On long-term preservation of Garole ram spermatozoa under controlled conditions the mean post-thaw recovery of 70.4 and 71.4% motile spermatozoa was achieved having 48.8 and 48.9% of rapidly motile spermatozoa, respectively in both the replicates. The effect of replication on cryopreservation was significant (p<0.05) on amplitude of lateral head displacement and beat frequency, but there was no significant effect on motility, rapidly motile spermatozoa, linearity, straightness and sperm velocities of frozen-thawed spermatozoa. It can be concluded from these results that an average 70% motility can be achieved on storage of Garole ram semen in chilled liquid state upto 48 h or in liquid nitrogen after freezing under controlled conditions in straws. However, further studies are required to evaluate the fertility of short-term and long-term preserved Garole ram semen for extensive use of this prolific sheep breed.