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Showing 1 to 20 of 30 for “"semen quality"”.
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Semen quality detection using acoustic wave sensors
… of AI is that the sperm sample used is of a high Quality. Two factors which determine the quality of the sample are the number of sperm present and their motility. There are numerous methods used to analyse the quality of a sperm sample, but these are generally laboratory based, expensive and in …
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Genetic parameters and genomic analysis of semen quality and fertility traits in pigs
… for production traits and selecting boars for semen traits, such as volume, concentration, motility and morphology, and for low variation in semen quality and production is still not a common practice. This selection is important for better performance of boars at AI stations, whose objective …
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Semen quality and libido of rams of different mutton breeds in the summer months
Call number: LD2668 .T4 1953 D6
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Semen quality and libido of rams of different mutton breeds in the summer months
Call number: LD2668 .T4 1953 D6
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The effects of sperm dose, semen quality, and retrograde sperm blockage on accessory sperm number and embryo quality in the artificially inseminated bovine
… sperm/ova and fertilization status/embryo quality. 3. Determine if mean number accessory sperm/ova or embryo quality are affected by semen quality. 4. Compare the percentage of morphologically normal accessory sperm with the percentage of normal cells in the inseminate. Using excised …
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Reproductive function in young Swedish men - Time trend, prenatal and adult exposure to smoking and phthalates
… general Swedish population were recruited. Their semen quality was compared with a group of men recruited in a similar manner between 2000 and 2001. The participants also delivered serum and urinary samples and answered questionnaires concerning maternal and paternal smoking during pregnancy. Data …
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A study of hormones and reproduction in male and female turkeys under natural mating or artificial insemination conditions
… an incomplete or completed mating. Neither semen quality nor egg production was affected by degree of sexual activity. In males used for artificial insemination, the presence or absence of females did not affect any semen quality measurement. Egg production of artificially inseminated …
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A retrospective analysis of semen samples and reproductive hormones in Africa and the middle east
Semen analysis is the cornerstone for the investigation of male infertility. Semen quality can be influenced by geographical location, age, ejaculatory abstinence, and season. In 2010, the WHO published criteria for human semen characteristics that were markedly lower than those previously …
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Maturation, spawning and fertility of hybrid striped bass (Morone chrysops x Morone saxatilis) exposed to 6- and 9-month photothermal cycles
… of stripping frequency (3 times in 7 days) on semen quality was determined by measuring concentration, motility, osmolality, pH and sugars of milt. Male and female effects on fertility variation were measured by crossing all males and females. Sperm concentration was estimated by spermatocrit, …
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The characterisation of semen from Zulu Rams raised under extensive management conditions in KwaZulu-Natal
… populations based on the viability of Zulu ram semen. Spermiogramic parameters used to assess quality were: scrotal circumference (cm); semen volume (ml); semen pH; sperm concentration (x109), progressive and mass motility (%), and percentages of live and abnormal spermatozoa. Semen samples were …
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Effects of Zeranol on Some Reproductive Traits in Beef Bulls (Semen, Histology, Hormones)
… variables tended to recover as the bulls aged. Semen quality was low in the implanted groups and did not improve with increasing age. Samples of spermatozoa taken from the cauda epididymidis showed that implanted groups had a higher incidence of certain sperm abnormalities than the control …
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Growth Performance, Carcass Traits, and Reproductive Characteristics in Boars Fed Diets Supplemented With an Organic Source of Selenium
… or control (0.363) boars. At 15-mo of age semen was collected from boars (n = 10/treatment) over 5-d. Semen quality declined over time, but the negative impact day had on sperm motility was less pronounced with Sel-Plex boars. Effects of treatment x day were detected for progressively …
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ΕΠΙΔΡΑΣΗ ΤΗΣ ΔΥΣΛΕΙΤΟΥΡΓΙΑΣ ΤΟΥ ΠΡΟΣΤΑΤΗ ΚΑΙ ΤΩΝ ΣΠΕΡΜΑΤΟΔΟΧΩΝ ΚΥΣΤΕΩΝ ΣΤΟ ΣΠΕΡΜΑ ΚΑΙ ΣΤΟ HUHNER TEST
… LIQUEFACTION AND VISCOSITY OF FRESHLY EJACULATED SEMEN AND THE MOTILITY AND VIABILITY OF SPERMATOZOA IN 319 MEN OF INFERTILE COUPLES. THE QUANTITATIVE AND QUALITATIVE MOTILITY AND VIABILITY OF SPERMATOZOA WERE SIGNIFICANTLY LOWER IN CASES WITH SEVERE PROSTATIC DYSFUNCTION IN THE LATTER GROUPTHE …
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Effect of Feed Additives and Toxic Elements on Swine Growth Performance, Nutrient Digestibility, Immune Function and Reproductive Performance
… (Exp 1), plasma gossypol (Exp 2&3) and semen quality (Exp 3), weaned pigs (Exp 1), growing gilts (Exp 2) and growing boars (Exp 3) were randomly allotted to dietary treatments. Treatments for Exp 1 during phase 1&2 were: (1) Positive Control (PC), formulated to meet NRC (2012) nutrient …
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Arachidonate 15-lipoxygenase and ubiquitin as potential fertility markers in boars
… (UBI), could be used to accurately evaluate boar semen quality. In this study, ejaculates (n=116) were collected from 18 Large White boars for eight months (April, August-February). Ejaculates were analyzed and the percentage of proximal CDs (PCD), distal CDs (DCD), distal midpiece reflex CDs …
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Defining an Optimal Range of Centrifugation and Concentration Parameters for Canine Semen Processing
… for artificial insemination and shipping canine semen in clinical practice. However, we need to process the semen samples using centrifugation and dilution with extenders to help preserve the breeding dose and semen quality. Our objective was to determine a clinically relevant range of …
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Effect of extra-gonadal sperm depletion on steroid hormone profiles in semen of bulls
… (DHEA), and progesterone (P) in bovine semen were established for a group of four post-pubertal bulls by depleting the bulls' extra-gonadal sperm reserves (EGR) on three occasions at two week intervals. Each depletion consisted of 14 consecutive ejaculates combined into five pools to …
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Cervical artificial insemination in sheep
Results are reported from a fresh semen cervical artificial insemination trial in April 1989 at the Lincoln College Research Farm. One hundred and ninety Coopworth ewes were inseminated over 5 days. Semen was collected twice daily from four Dorset Down rams using an artifical vagina (A.V.). …
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Effect of Avocado (Persea americana Mill) oil inclusion in the Tris-based extender on the quality of Boer goat semen stored at different temperatures
Semen extenders are chemical mediums used for preserving, and protecting spermatozoa against different shocks while processing, storing and transportation for use in artificial insemination (Raheja et al., 2018). There are challenges with the preservation of goat semen for Artificial Insemination …
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Evaluation of Different Concentrations of Egg Yolk in Canine Frozen Semen Extender
… > 70% and normal morphology > 60% was used. Semen was collected and pooled for five freezing trials. The concentrations of egg yolk used in the extender were: 0%, 10%, 20%, 30% and 40%. Assessment of each sample was blinded to the treatments until all results were obtained and statistics had …
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