Motility and Fertility of Spermatozoa as Affected by Increased Ambient Temperature

El-Sheikh, Ahmed S.; Casida, L. E.

doi:10.2527/jas1955.1441146x

Cited by 11 publications

(8 citation statements)

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“…These models allows the investigation of a range of temperatures and their impact on sperm production. In the case of rabbit [37] and ram [36], increasing the ambient air temperature up to 43.3 o C for one hour, showed a significant decline in sperm parameters, particularly motility [37]. When left for longer (32 o C for up to one week), a significant decline in all sperm parameters (i.e., motility, morphology and counts) can be seen five weeks later [37].…”

Section: Different Models Of Testicular Hyperthermia But Similar Outc...mentioning

confidence: 89%

“…The use of a hot-water bath [24][25][26][27][28][29][30][31][32][33][34][35] and elevated environmental temperatures [36][37][38][39][40][41][42] are examples of models to "overwhelm" the ability of the scrotum to thermoregulate. These models allows the investigation of a range of temperatures and their impact on sperm production.…”

Section: Different Models Of Testicular Hyperthermia But Similar Outc...mentioning

confidence: 99%

“…In the case of rabbit [37] and ram [36], increasing the ambient air temperature up to 43.3 o C for one hour, showed a significant decline in sperm parameters, particularly motility [37]. When left for longer (32 o C for up to one week), a significant decline in all sperm parameters (i.e., motility, morphology and counts) can be seen five weeks later [37]. Notably, semen quality begins to improve eight weeks post intervention, suggesting spermatogonia are not affected by short-term heat duration.…”

Section: Different Models Of Testicular Hyperthermia But Similar Outc...mentioning

confidence: 99%

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The Impact of Testicular Hyperthermia, Its Physiological Relevance and the Ability of Antioxidants to Overcome the Condition

Robinson,

Ogle,

Netherton

et al. 2023

Preprint

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Testicular heat stress is a well described phenomenon that occurs in mammals that possess a scrotum. Different models to induce testicular hyperthermia, such as surgical cryptorchidism, hot water bath, scrotal insulation or increased environmental temperature have all shown that spermatocytes and spermatids are unambiguously affected by high temperature, resulting in poor sperm production weeks later. Furthermore, a body of evidence suggest the involvement of oxidative stress is either a major or contributory pathway, which gives rise to the potential to overcome this condition. Whilst experimental models conclusively show the deleterious effect of testicular heat on sperm quality, the physiological relevance of the work is still debated. Herein we summarise a cohort of studies that report the effect of “season” on sperm quality. The data show season can affect sperm production, motility and morphology depending on where the work was performed. In countries where temperatures drop below zero, there is evidence showing summer conditions tend to improve semen quality. However, in sub-tropical countries, some studies show a decrease in summer, whilst others show no change. Herein we offer a reasonable explanation for this apparent controversy and present a range of antioxidant supplements that may offer some protection against testicular hyperthermia.

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Section: Different Models Of Testicular Hyperthermia But Similar Outc...mentioning

confidence: 89%

Section: Different Models Of Testicular Hyperthermia But Similar Outc...mentioning

confidence: 99%

Section: Different Models Of Testicular Hyperthermia But Similar Outc...mentioning

confidence: 99%

See 1 more Smart Citation

The Impact of Testicular Hyperthermia, Its Physiological Relevance and the Ability of Antioxidants to Overcome the Condition

Robinson,

Ogle,

Netherton

et al. 2023

Preprint

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“…In the female, smaller blastocysts and embryos, and an increase in embryo mortality rates were also observed. El Sheikh and Casida (1955) concluded that the maximum temperature to which rabbits could be exposed (for 1 hour) without impairing health or sperm motility was 43.3°C at a relative humidity of 30 to 40%. Chou et al, (1974) heated the testes of live rabbits to 43°C for 20 min on three successive days.…”

Section: Reproductionmentioning

confidence: 99%

Problems and prospects of rabbit production in Nigeria - a review

Mailafia¹,

Onakpa²,

Owoleke³

2011

Bayero J. Pure App. Sci.

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Population growth in the developed countries is stabilizing while that of developing countries including Nigeria is still increasing rapidly. This calls for increasing the production of livestock to meet the protein demand of the populace. Rabbits are characterized by small body size, short gestation period, high reproductive potential, rapid growth rate, genetic diversity, and their ability to utilize forages. Their by-products serve as major diet components and are devoid of fat thus making them suitable important source of protein. Rabbit meat is of high quality, being high in protein and low in fat content. Rabbit production can be integrated into small farming systems, with the rabbits being fed on crop residues, weeds, waste fruits, vegetables and poultry droppings. The manure can be used as fertilizer for crops and gardens. The housing systems and equipment examined were cages, feeders and other equipment for rabbits can be made using readily available materials such as split bamboo and raffia palm. Limitations to rabbit production in developing countries include the susceptibility of the animals to heat stress, and the degree of management skill necessary to raise rabbits successfully. This study further suggests areas of research needed on the nutritional value of tropical forages and by-products for rabbits. It is apparent that in many areas in developing countries, rabbit production could be an effective means of converting forages and by-products into high quality animal protein for human consumption. The study provides a benchmark for the understanding of prospects of rabbit production in Nigeria.

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“…The use of a hot-water bath [17][18][19][20][21][22][23][24][25][26][27] and elevated air temperatures [28,29] are examples of two models used to "overwhelm" the ability of the scrotum to regulate heat. The advantage of these models is the ability to test a range of temperatures and their impact on sperm production.…”

mentioning

confidence: 99%

The Impact of Testicular Hyperthermia and Its Physiological Relevance to Human and Agriculture

2024

Gynecol Obstet Open Acc

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Motility and Fertility of Spermatozoa as Affected by Increased Ambient Temperature

Cited by 11 publications

References 0 publications

The Impact of Testicular Hyperthermia, Its Physiological Relevance and the Ability of Antioxidants to Overcome the Condition

The Impact of Testicular Hyperthermia, Its Physiological Relevance and the Ability of Antioxidants to Overcome the Condition

Problems and prospects of rabbit production in Nigeria - a review

The Impact of Testicular Hyperthermia and Its Physiological Relevance to Human and Agriculture

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