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Ching-Lin Shyu Cheng-Chung Lin Shih-Ling Hsuan Shiow-Her Chiou Jacky Peng-Wen Chan 《The Canadian veterinary journal. La revue veterinaire canadienne》2010,51(3):308-310
This article describes the clinical and pathological features of an orphan 7-day-old, male Formosan sambar fawn that was hospitalized for treatment of weakness. The fawn had been deprived of colostrum and developed suppurative meningitis that was attributed to Escherichia coli. 相似文献
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Catherine Rouxel Marc Suquet Jacky Cosson Armelle Severe Loic Quemener & Christian Fauvel 《Aquaculture Research》2008,39(4):434-440
The biology of cod reproduction is well described in the scientific literature. However, sperm biology and spermatozoa management are poorly studied in this species. Because of its recent farming expansion, a better knowledge of cod gametes is becoming especially useful. This work aimed at establishing tools to study sperm biology in cod, and also investigated the existence of changes in cod sperm quality during the spawning period. We showed that sperm concentration could be assessed using spectrophotometry at 260 nm. Sperm motility significantly decreased after a 168‐h storage at 4 °C. A 1:9 dilution of sperm in a non‐activating medium (1/3 seawater and 2/3 freshwater, osmotic pressure: 360 mOsm kg?1) improved sperm storage. Sperm concentration, sperm velocity and storage capacity at 4 °C peaked during the medium period of the spawning season and then decreased to values close to those observed at the beginning of the reproductive period. The measured values of osmotic pressure, pH, protein, Na+, Cl? and Ca2+ concentrations of the seminal fluid were modified along the spawning period. Cell damage was noted at the end of the spawning period: local blebs were observed on the flagellum but also loops at its distal part. On the other hand, spermatocrit did not vary with the sampling date. In conclusion, cod sperm quality is modified during the spawning period, the highest‐quality samples being collected during the medium part of this season. 相似文献
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Mohammad Reza Imanpoor Sayed Hadi Alavi Jacky Cosson 《Fish physiology and biochemistry》2009,35(4):701-707
We have determined a number of biological characteristics of the Persian sturgeon egg (including diameter, surface-to-volume
ratio, yolk sphere and perivitelline space) and of female brood stocks (including age, length, weight, condition and absolute
fecundity) in 420 specimens of the migratory population of Acipenser persicus in Gorgan bay of Iran from 2001 to 2004. In the hydrated egg, the average egg diameter, yolk diameter, surface-to-volume
ratio and yolk sphere-to-perivitelline space ratio values were: 3.64 ± 0.17 mm, 3.26 ± 0.25 mm, 1.65 ± 0.08 and 0.75 ± 0.01,
respectively. In this chondrostean species, the egg surface and volume were found to increase with increasing egg diameter,
but the egg surface-to-volume ratio decreased. In Persian sturgeon, the surface-to-volume ratio and yolk sphere-to-perivitelline
space ratio is very high; therefore, the metabolic rate is low and female spawning occurs in low-temperature waters. The statistical
Pearson correlation between egg diameter relative to a number of brood stock characteristics, including fork length (r = 0.059), weight (r = 0.140), age (r = 0.081) and absolute fecundity (r = 0.095), were not significantly different (P > 0.05). An extensive comparison of these results with data published on other fish species is presented and discussed. 相似文献
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Effect of water temperature on the physiology of fish spermatozoon function: a brief review 
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下载免费PDF全文 Hadiseh Dadras Borys Dzyuba Jacky Cosson Amin Golpour Mohammad Abdul Momin Siddique Otomar Linhart 《Aquaculture Research》2017,48(3):729-740
Motility is a key factor in function of the spermatozoon and determines semen quality and fertilizing capacity. Effective motility occurs when sperm is diluted in a swimming solution, the adequacy of which is determined by factors varying according to fish species. Spermatozoon motility rate and velocity, as well as duration of the motility period, are influenced by the temperature of the water in which broodfish are held. Increase in temperature of swimming medium beyond the optimal increases cell metabolism, leading to an increase in velocity with rapid depletion of energy resources, promoting early cessation of movement. The aim of this review was to discuss current information on the influence of temperature on quantitative spermatozoon properties, which could affect sperm function. Our findings provide a greater understanding of fish sperm physiology and a biological foundation for the further development of spermatozoon motility investigations as well as reproduction technologies. 相似文献
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Jacky Peng‐Wen Chan Chao‐Chin Chang Wei‐Li Hsu Wen‐Bor Liu Ter‐Hsin Chen 《Veterinary clinical pathology / American Society for Veterinary Clinical Pathology》2010,39(1):72-78
Background: It is known that quantification of bovine acute‐phase proteins could routinely provide early diagnostic and prognostic information for monitoring herd health status. Objective: The aim of this study was to test the hypothesis that haptoglobin (Hp) and serum amyloid A (SAA) have the potential for indicating uterine infection, mainly due to subclinical endometritis, which can seriously influence the reproductive performance in dairy cows. Methods: A total of 264 serum samples were collected from 24 Holstein dairy cows at defined intervals from 1 week prepartum to 6 months postpartum. Clinically healthy animals (Group 1, n=6) were compared with 24 animals having acute puerperal metritis (Group 2, n=18) and with concentrations obtained from healthy heifers (baseline values, n=10). The concentrations of serum Hp and SAA were measured using a hemoglobin‐binding assay and Western blot analysis, respectively. Reproductive performance was assessed as the number of days open and the conception rate at the end of the study. Results: Upper cut‐off values for Hp and SAA concentrations in heifers were 130.9 μg/L and 51.9 μg/mL, respectively. Hp concentrations in Group 2 were significantly higher than those in Group 1 at all time points (P<.001). Additionally, among the successfully pregnant animals, the number of days open was significantly higher in 6 cows with Hp >130.9 μg/mL (median=316 days) than in 11 cows with Hp ≤130.9 μg/mL (median=120 days) (P=.0024). Conclusions: Serum Hp and SAA concentrations can be used to recognize uterine infection in postpartum cows. The association between elevated Hp values and number of days open suggests Hp may also be a useful indicator of poor prognosis for reproductive performance. 相似文献
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Kholodnyy Vitaliy Dzyuba Borys Gadêlha Hermes Cosson Jacky Boryshpolets Sergii 《Fish physiology and biochemistry》2021,47(3):653-669
Fish Physiology and Biochemistry - Fertilization of freshwater fish occurs in the environment which negatively affects a lifespan of gametes mostly due to the osmotic shock; therefore, male gametes... 相似文献