Scrotal Circumference and its Relationship with Testicular Growth, Age, and Body Weight in Murrah Buffalo Bulls

Shende, Vinod; Sontakke, S. H.; Potdar, V. V.; Shirsath, Tejsjree V.; Khadse, J. R.

doi:10.20546/ijcmas.2019.811.264

Cited by 5 publications

(1 citation statement)

References 6 publications

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“…Our findings agree with previous reports that high correlations existed between testicular weight, sperm reserves, and daily sperm production in WAD rams [ 23 ]. Moreover, in Murrah bulls, there were high correlations between scrotal circumference, testicular length, testicular diameter, testicular volume, and body weight [ 24 , 25 ]. Similarly, testicular length correlated positively and moderately with testicular sperm reserves in Jordanian native bucks [ 11 ], while testicular morphometric parameters correlated highly with each other and with epididymal sperm reserves in Nigerian Sahel goats [ 9 ].…”

Section: Discussionmentioning

confidence: 99%

Correlation between Testicular Morphometric Parameters and Sperm Reserves in Ghanaian West African Dwarf Rams

Atawalna

Essel

Nettey

et al. 2022

Veterinary Medicine International

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The current study was conducted to investigate the association between testicular morphometric parameters and sperm reserves in Ghanaian West African Dwarf rams. The intact scrotum along with testes and epididymides from twelve rams were collected immediately after slaughtering and transported to the Regional Veterinary Laboratory. The left testes and epididymides from all rams were dissected and the testes were individually weighed. The individual length, width, and volume of the testis and cauda epididymis were determined. Tissue samples were taken from testicular parenchyma, homogenized, and used to determine gonadal sperm concentration using a hemocytometer. Spermatozoa were recovered from the cauda epididymis by the incision method and used to determine the spermiogram. The weight, length, width, and volume of the testis were 63 ± 11 gram, 6.7 ± 0.44 cm, and 4.6 ± 0.40 and 74 ± 19 cm3, respectively, while the same parameters (except weight) for the cauda epididymis were 3.2 ± 0.35 cm, 1.8 ± 0.16 cm, and 5.48 ± 1.5 cm3, respectively. The sperm reserves per testis (SR), sperm reserves per gram testis (SRG), daily sperm production per testis (DSP), and daily sperm production per gram testis (DSPG) were (11,740 ± 386, 250 ± 6, 2350 ± 7.7, and 50 ± 1.0) million sperm cells, respectively. The cauda epididymal sperm reserves were 1,386 ± 456 million sperm cells, and the sperm motility (M%), morphologically normal viable cells (N%), dead sperm cells (D%), and morphologically abnormal sperm cells (A%) were 89 ± 3.2, 70.13 ± 8.0, 13.55 ± 5.05, and 16.33 ± 7.9, respectively. In conclusion, testicular morphometric parameters in Ghanaian West African Dwarf rams are highly and positively correlated (r = 0.7487–0.9354) with sperm reserves and production.

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Section: Discussionmentioning

confidence: 99%

Correlation between Testicular Morphometric Parameters and Sperm Reserves in Ghanaian West African Dwarf Rams

Atawalna

Essel

Nettey

et al. 2022

Veterinary Medicine International

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show abstract

Acoustic allometry in roars of male black howler monkeys, Alouatta pigra, but no trade-off with testicular volume

De los Santos Mendoza,

Van Belle

2024

Animal Behaviour

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The Influence of Season and Age on Specific Semen Traits and Reproductive Behavior in Carpatina Breed Bucks

Pascal,

Pânzaru,

Radu-Rusu

et al. 2024

Agriculture

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This study explores how age and seasonal changes impact semen characteristics and reproductive behavior in Carpatina breed bucks. Males were divided into three age groups: young (14–23 months; L14), adult (3–4 years; L34), and older (5–6 years; L56). Scrotal biometry was determined using a measuring tape, and testicular volume was evaluated by fully submerging the testes in a water-filled container and measuring the displaced water. Semen analysis was conducted on samples collected each season, with volume, color, and acidity being assessed. The evaluation of specific semen characteristics (motility, sperm concentration, normal spermatozoa) was conducted using a Computer-Assisted Semen Analysis (CASA) system, and testosterone levels were measured in blood samples collected at the start of each season. Behavior and sexual reflexes were evaluated based on mating desire and the bucks’ reaction to the presence of females. Key findings indicate that testicular volume varies significantly with both age and season, with the most pronounced differences between younger bucks and the older groups, especially during autumn. Semen quality parameters such as ejaculate volume, sperm concentration, and motility also showed seasonal fluctuations, with younger bucks having lower sperm concentrations. Testosterone levels were observed to increase with age, peaking in autumn. Behavioral observations revealed that younger bucks exhibited less intense sexual activity, although this improved during autumn. Additionally, a significant correlation was identified between body weight and testicular volume in adult bucks (R = 0.942, p-value = 0.016 for L34; R = 0.797, p-value = 0.022 for L56), suggesting that age plays a crucial role in reproductive potential. Our findings highlight that, while bucks are capable of year-round reproduction, autumn provides optimal conditions for semen quality and reproductive performance. This research has valuable implications for optimizing breeding programs, contributing to genetic advancement, and improving management strategies in goat farming, especially within temperate continental climates.

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Scrotal Circumference and its Relationship with Testicular Growth, Age, and Body Weight in Murrah Buffalo Bulls

Cited by 5 publications

References 6 publications

Correlation between Testicular Morphometric Parameters and Sperm Reserves in Ghanaian West African Dwarf Rams

Correlation between Testicular Morphometric Parameters and Sperm Reserves in Ghanaian West African Dwarf Rams

Acoustic allometry in roars of male black howler monkeys, Alouatta pigra, but no trade-off with testicular volume

The Influence of Season and Age on Specific Semen Traits and Reproductive Behavior in Carpatina Breed Bucks

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