ArticleAsian-Australasian journal of animal sciences2014
Testicular cell indices and peripheral blood testosterone concentrations in relation to age and semen quality in crossbred (holstein friesian×tharparkar) bulls.
Article in Asian-Australasian journal of animal sciences, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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10 citing papers in PubMed, 38 citations in OpenAlex.
- Associations of Bovine Fetal Adipose Tissue-Derived Mesenchymal Stem/Stromal Cells and Germ Cell Marker Expression in Testicular Organoids.Animals : an open access journal from MDPI · 2026Article
- Ultrasonographic evaluation of testicular and Pampiniform plexus characteristics in young bulls under different microclimatic conditions in a tropical environment.Scientific reports · 2025Article
- A premier case report of a congenital pseudocyst of the testis (cystis spuria testiculi congenita) in a three-week-old calf.BMC veterinary research · 2025Article
- Horn size is linked to Sertoli cell efficiency and sperm size homogeneity during sexual development in common eland (Frontiers in cell and developmental biology · 2024Article
- Sperm Transcripts Associated With Odorant Binding and Olfactory Transduction Pathways Are Altered in Breeding Bulls Producing Poor-Quality Semen.Frontiers in veterinary science · 2022Article
- Correlation between age, testosterone and adiponectin concentrations, and sperm abnormalities in Simmental bulls.Veterinary world · 2021Article
- The impact of regular sperm donation on bulls' seminal plasma hormonal profile and phantom response.Scientific reports · 2021Article
- Influence of season and climatic variables on testicular cytology, semen quality and melatonin concentrations in crossbred bucks reared under subtropical climate.International journal of biometeorology · 2018Article
- Morphometric evaluation of seminiferous tubule and proportionate numerical analysis of Sertoli and spermatogenic cells indicate differences between crossbred and purebred bulls.Veterinary world · 2015Article
- Beyond Testis Size: Links between Spermatogenesis and Sperm Traits in a Seasonal Breeding Mammal.PloS one · 2015Article
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9 authors at 1 institution in 1 country.
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Abstract
Present study analyzed the changes in peripheral blood testosterone concentrations and testicular cytogram in relation to age and semen quality in crossbred males. Three different age groups of crossbred males viz. bull calves (6 months, n = 5), young bulls (15 months, n = 5) and adult bulls (4 to 6 years, n = 8) were utilized for the study. Testicular fine needle aspiration cytology technique was used to quantify testicular cytology and their indices. Peripheral blood testosterone concentrations were measured using enzyme-linked immunosorbent assay method. Semen samples collected from adult bulls were microscopically evaluated for quality parameters. Mean peripheral blood testosterone concentrations in bull calves, young bulls and adult bulls were 2.28±0.09 ng/mL, 1.42±0.22 ng/mL and 5.66±1.08 ng/mL respectively, and that in adult bulls were significantly different (p<0.01) from young bulls and bull calves. There was no significant difference between the proportion of different testicular cells in bull calves and young bulls. Between young and adult bulls, significant differences (p<0.01) were observed in the proportion of spermatocytes, spermatozoa, and sperm: Sertoli cell ratio. The proportions of Sertoli cells showed a significant difference (p<0.01) between the three age groups. The number of primary spermatocytes had a positive correlation with peripheral blood testosterone concentrations in bull calves (r = 0.719, p<0.01). Number of Sertoli cells per 100 germ cells was negatively correlated with blood testosterone concentration in young bulls (r = -0.713, p<0.01). Among different semen parameters in adult bulls, ejaculate volume (r = 0.790, p<0.05) had positive relationship, and sperm motility had significant negative correlation (r = -0.711, p<0.05) with testosterone concentrations. The number of Sertoli cells and Sertoli cell index had a positive correlation with various semen quality parameters (p<0.001). Results of the present study conclude that number of Sertoli cells and Sertoli cell index are good indicators of semen quality, but peripheral blood testosterone concentrations may not have a direct relationship with various seminal attributes in crossbred bulls.
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