Correlation of in vivo testicle and seminal vesicle size with post mortem dimensions in bulls

Rocha, Angelica; Carpenter, Brian; Hawkins, H. E.; Sprott, L. R.; Forrest, D.W.

doi:10.1016/0093-691x(94)90865-6

Cited by 7 publications

(5 citation statements)

References 5 publications

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“…In Menz rams large testes have been reported to produce ejaculates of greater volume and concentration at puberty, compared to smaller testes (Mukassa‐Mugerewa and Ezaz, 1992). The strong and positive correlation of SC with testicular length and width is in agreement with the findings of Rocha et al. (1994).…”

Section: Discussionsupporting

confidence: 89%

“…The positive and high correlations between post-slaughter testis and ductus epididymides with those recorded in vivo, suggests that measurements of these variables in live animals could adequately predict the testicular mass of the animal. This is in agreement with Rocha et al (1994) who reported a highly significant correlation between the weight of testes after slaughter with both SC (r ¼ 0.81; P < 0.001) and testicular width (r ¼ 0.84; P < 0.0001) in vivo. Coulter et al (1987) also reported a positive, high correlation (r ¼ 0.95) between the weight of paired testes and SC in young beef bulls.…”

supporting

confidence: 92%

“…In Menz rams large testes have been reported to produce ejaculates of greater volume and concentration at puberty, compared to smaller testes (Mukassa-Mugerewa and Ezaz, 1992). The strong and positive correlation of SC with testicular length and width is in agreement with the findings of Rocha et al (1994). The high correlation coefficients between testicular length and width with SC on one hand, and with semen production variables on the other hand, suggest that all the variables could be considered in the prediction of sperm production and breeding potential of Ogaden bucks.…”

supporting

confidence: 86%

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Effect of Supplementation with Agro‐industrial By‐products and Khat (Catha edulis) Leftovers on Testicular Growth and Sperm Production in Ogaden Bucks

Mekasha

Tegegne²,

Rodriguez‐Martinez

2007

Journal of Veterinary Medicine Series A

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The aim of this study was to characterize growth and sperm production parameters in Ogaden bucks fed a basal diet of hay and supplemented with agro-industrial by-products and Khat leftovers in Ethiopia. Thirty-five bucks with a mean (+/-SD) initial live body weight (BW) of 15.5 +/- 1.5 kg were randomly assigned to one of four dietary treatments for a period of 13 weeks. Treatments consisted of native hay fed ad libitum (control; C), native hay supplemented with a 1% of BW agro-industrial by-products (treatment 1; T1), native hay supplemented with Khat (Catha edulis) leftovers at a rate of 1% of BW (treatment 2; T2) and Khat leftovers fed ad libitum (treatment 3; T3). Bucks fed on T1-T3 had higher BW, body condition score, scrotal circumference (SC), testicular width and testicular length, compared to controls (P < 0.05). Also, bucks in T1-T3 had higher sperm progressive motility, sperm concentration per ml and total number of spermatozoa per ejaculate compared to controls (P < 0.05). Between treatments, bucks in T3 recorded the highest BW (17.2 +/- 0.16) and testicular size (21.1 +/- 0.17 cm). Both testicular and epididymal weight and dimensions were significantly affected (P < 0.05) by supplementation compared to controls. Testicular size was positively correlated to live BW (r = 0.53, P < 0.001). SC was positively correlated with ejaculate volume (r = 0.37, P < 0.001), sperm mass activity (r = 0.65, P < 0.001) and individual sperm progressive motility (r = 0.40; P < 0.001). Supplementation with Khat leftovers induced the highest improvement in live BW, testicular size, semen production and sperm motility in Ogaden bucks and can possibly be considered as a feed supplement to enhance goat production under smallholder livestock farming system in Ethiopia.

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Section: Discussionsupporting

confidence: 89%

supporting

confidence: 92%

supporting

confidence: 86%

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Effect of Supplementation with Agro‐industrial By‐products and Khat (Catha edulis) Leftovers on Testicular Growth and Sperm Production in Ogaden Bucks

Mekasha

Tegegne²,

Rodriguez‐Martinez

2007

Journal of Veterinary Medicine Series A

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“…However, there is no apparent influence of the shape of the testis on the results of andrological examinations. In a number of previous studies in bulls, boars, and stallions, testicular dimensions were determined with scrotal ultrasonography correlated strongly with those recorded after castrations or postmortem (Cartee, Gray, Powe, Hudson, & Whitesides, ; Cartee, Powe, Gray, Hudson, & Kuhlers, ; Love, Garcia, Riera, & Kenney, ; Pechman & Eilts, ; Rocha, Carpenter, Hawkins, Sprou, & Forrest, ); therefore, we feel confident that testicular size measured ultrasonographically provides an accurate assessment of gonadal development in situ. The final stages of testicular growth in growing rams were not associated with a significant rise in testicular volume or serum testosterone (T) concentrations ( p > 0.05) in the Dorper rams studied (Table ).…”

Section: Resultsmentioning

confidence: 61%

Changes in testicular size, echotexture, and arterial blood flow associated with the attainment of puberty in Dorper rams raised in a subtropical climate

Camela

Nociti

Santos

et al. 2018

Reprod Domestic Animals

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There is a paucity of information on the relationships of testicular morphology, echotextural attributes, and blood flow dynamics with pubertal development of rams raised in a subtropical climate. Forty-five Dorper rams (24 rams aged 8-11 months and 21 rams aged 12-24 months) were examined using a portable ultrasound scanner connected to a 7.5-MHz transducer. Computer-assisted analyses of testicular ultrasonograms utilized commercially available Image ProPlus analytical software. Spectral Doppler scans of testicular arteries were performed immediately after scrotal (B-mode) ultrasonography to determine peak systolic velocity (PSV), end-diastolic velocity (EDV), resistive index (RI = [PSV-EDV]/PSV), and pulsatility index (PI = [SPV-EDV]/mean velocity) of the blood vessels. The length of the testes (9.7 ± 0.3 compared with 9.0 ± 0.2 cm) and scrotal circumference (33.3 ± 0.5 compared with 31.8 ± 0.4 cm) were greater (p < 0.05) but testicular depth (4.9 ± 0.08 compared with 4.5 ± 0.1 cm) was less (p < 0.05) in sexually mature compared with peripubertal rams. There were no differences (p > 0.05) between the two age groups of Dorper rams in blood flow indices of testicular arteries. Mean numerical pixel values (100.5 ± 4.1 compared with 89.2 ± 4.8) and pixel heterogeneity (25.6 ± 0.6 compared with 23.6 ± 0.5) of testicular parenchyma were greater (p < 0.05) in peripubertal than in postpubertal rams. Semen volume was negatively correlated with PI of testicular arteries (r = -0.57, p = 0.04). In summary, the attainment of sexual maturity in the rams of the present study was associated with significant changes in testicular length and depth, scrotal circumference, and parenchymal echogenicity/hetrogeneity but not in testicular volume and blood perfusion rates. Testicular artery PI can be used to predict the volume of ejaculate in rams.

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“…The accessory sex glands (prostate, ampullae and seminal vesicles) were manually palpated per rectum and assessed for size, shape and consistency. The seminal vesicles which are nodular, paired glands on either side of the urethra, are normally about 2 cm wide, 8 cm long and 1.5 cm thick (Rocha et al, 1994). However, in this bull the right gland was found to be significantly enlarged and hardened on rectal examination.…”

Section: Clinical Presentationmentioning

confidence: 99%

Seminal vesiculitis in a bull: a case report

Truyers¹,

Sargison

2013

Livestock

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Correlation of in vivo testicle and seminal vesicle size with post mortem dimensions in bulls

Cited by 7 publications

References 5 publications

Effect of Supplementation with Agro‐industrial By‐products and Khat (Catha edulis) Leftovers on Testicular Growth and Sperm Production in Ogaden Bucks

Effect of Supplementation with Agro‐industrial By‐products and Khat (Catha edulis) Leftovers on Testicular Growth and Sperm Production in Ogaden Bucks

Changes in testicular size, echotexture, and arterial blood flow associated with the attainment of puberty in Dorper rams raised in a subtropical climate

Seminal vesiculitis in a bull: a case report

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