Use of a sperm analyzer for evaluating broiler breeder males. 1. Effects of altering sperm quality and quantity on the sperm motility index

McDaniel, C. D.; Hannah, JL; Parker, H. M.; Smith, T.; Schultz, C. D.; Zumwalt, C. D.

doi:10.1093/ps/77.6.888

Cited by 56 publications

(26 citation statements)

References 12 publications

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“…An asterisk indicates a signi cant difference between control and heat stressed males for a given week. SQI values produced a greater proportion of fertilised eggs in the current study, as in past research (McDaniel et al, 1998;Parker et al, 2000Parker et al, , 2002. However, in the present study, males with higher SQI values were more affected by high temperature than males with lower values.…”

Section: Discussionsupporting

confidence: 71%

“…Heat stress can cause signi cant decreases in rooster fertility due to a decrease in semen quality and the number of sperm penetrating the perivitelline membrane (Clark and Sarakoon, 1967;McDaniel et al, 1995McDaniel et al, , 1996. The sperm quality index (SQI) is correlated with rooster fertility (McDaniel et al, 1998;Parker et al, 2000) and, on average, declines when roosters are heat stressed (Hood, 1999;Karaca, 2001). However, it is possible that males with different semen qualities prior to heat exposure may respond differently to heat stress.…”

Section: Introductionmentioning

confidence: 99%

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The effects of heat stress and sperm quality classification on broiler breeder male fertility and semen ion concentrations

Karaca

Parker²,

Yeatman³

et al. 2002

British Poultry Science

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1. The present study was undertaken to determine the effects of heat exposure on fertility, semen quality, and semen ion concentrations of broiler breeders classified on sperm quality index (SQI) before heat stress. 2. Cobb males (108) were individually caged in 6 temperature-controlled rooms. Each room contained an equal number of males from each of the 4 SQI population quartiles as follows: best (B), good (G), fair (F), and poor (P). Three rooms were heated to 35 degrees C, and the other three rooms were maintained at a constant 23 degrees C as controls. For each SQI group in each room, 15 Leghorn hens were artificially inseminated (5 x 10(7) sperm/hen) once a week for 8 weeks for fertility observations. 3. Body weight, sperm concentration, SQI, and fertility of P males were lower than in the other three SQI groups. Body temperature of the top three SQI groups was increased by heat exposure, but body temperature was not altered by heat stress in the P group. Fertility, sperm viability, and SQI of the top three SQI groups, but not the P group, was decreased by heat stress. Seminal plasma K+ of P males was lower than that of B males. However, seminal plasma Ca2+ concentration of P males was higher than that of B males. 4. In conclusion, high ambient temperatures had more impact on semen quality and fertility of males in the top 75% of the SQI population than in males in the bottom 25% of the population. In addition, calcium ions (Ca2+) appear to play a major role in heat stress infertility.

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Section: Discussionsupporting

confidence: 71%

Section: Introductionmentioning

confidence: 99%

The effects of heat stress and sperm quality classification on broiler breeder male fertility and semen ion concentrations

Karaca

Parker²,

Yeatman³

et al. 2002

British Poultry Science

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“…Peebles and Brake (1985) concluded that feeding ascorbic acid to broiler breeder at the rate of 50 ppm/kg feed improved fertility compared to the control group. In contrast, McDaniel et al (1998) reported that ascorbic acid (500 ppm/kg feed) did appear to improve semen quality and fertility. Elansary et al (1999) reported increased ejaculated volume, sperm concentration and sperm motility in vitamin C fed cockerels compared to the control.…”

Section: Vitamin Cmentioning

confidence: 89%

Antioxidants and poultry semen quality

Khan

2011

World's Poultry Science Journal

120

113

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Avian spermatozoa are characterised by high proportions of polyunsaturated fatty acids (PUFAs) which is associated with increased susceptibility to reactive oxygen species (ROS) and lipid peroxidation. Recent advances in avian reproduction have focused on the potential of ROS as one of the prime mediators of infertility. Although ROS are involved in many physiological functions of spermatozoa, their excessive production may result in oxidative stress. The production of ROS is enhanced during unfavourable environmental and stressful conditions, and an effective scavenging system is essential to counter the production of ROS. Antioxidants are compounds that suppress the formation of ROS. Enzymatic and non-enzymatic antioxidants build a powerful antioxidant system in avian semen which is able to protect it against ROS and lipid peroxidation. The balance between ROS and antioxidants in avian semen is a fundamental determinant of membrane integrity, sperm viability and fertilising ability. A regulating role of ROS in sperm function in mammalian sperm along with their counteractive mechanisms have been extensively studied; but their role for avian species reproduction remains to be elucidated. Various antioxidants belonging both to enzymatic and nonenzymatic groups can counter oxidative stress. Hence the rationale of using antioxidants is advocated.

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“…The age-old method of sperm motility measurement is the microscopic method that essentially measures horizontal motion of the cells and this method gives only a subjective assessment of sperm motility. Subsequently several objective methods have been developed to measure sperm horizontal movement, the CASA being the most widely used one (14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27). Although CASA gives multiple sperm motility parameters, their correlation with fertility potential of spermatozoa is not well defined (23)(24)(25)(26)(27).…”

Section: Discussionmentioning

confidence: 99%

“…In the present international scenario, microscopic method is the most widely used subjective method for sperm motility analysis. Subsequently, more objective methods were developed, such as light scattering method, laser beam method, multiple exposure photographic method, etc (14)(15)(16)(17)(18)(19)(20)(21)(22). But, all the available techniques consider only the ''horizontal'' velocity and there is not a single instrument available for measuring the ''vertical'' velocity of spermatozoa.…”

mentioning

confidence: 99%

A computerized spectrophotometric instrumental system to determine the “vertical velocity” of sperm cells: A novel concept

et al. 2007

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Background:The presently available cell motility‐analyzers measure primarily the “horizontal” velocity and there is no instrument available for “vertical” velocity measurement. This development was based on the turbidimetric method of sperm motility analysis.Methods:Sperm was layered at the bottom of the cuvette containing buffer solution and exposed to the spectrophotometric light path at different heights to track the vertically moving sperms. The vertical movement was materialized with the development of an electromechanical up–down movement devise for the cuvette accomplished with the help of a cuvette holder‐stepper motor‐computer assembly. The entire system was controlled by the necessary motion control, data acquisition, and data processing softwares developed for cuvette movement and data analysis.Results:Using goat sperm as the model a unique computer‐based spectrophotometric system has been developed for the first time to determine the average “vertical” velocity of motile cells.Conclusions:Undertaking upward movement against gravity is much tougher as compared with horizontal movement. Consequently average vertical velocity is expected to be a much better identifying parameter for assessing semen and other motile cell quality. The novel instrumental system developed by us has thus the potential for immense application in human infertility clinics, animal‐breeding centres, centres for conservation of endangered species, and also for research work on vertical velocity of spermatozoa and other motile cells, such as bacteria, protozoa, etc. © 2007 International Society for Analytical Cytology

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Use of a sperm analyzer for evaluating broiler breeder males. 1. Effects of altering sperm quality and quantity on the sperm motility index

Cited by 56 publications

References 12 publications

The effects of heat stress and sperm quality classification on broiler breeder male fertility and semen ion concentrations

The effects of heat stress and sperm quality classification on broiler breeder male fertility and semen ion concentrations

Antioxidants and poultry semen quality

A computerized spectrophotometric instrumental system to determine the “vertical velocity” of sperm cells: A novel concept

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