Testicular measurements in Campolina stallions

• Main Authors: Gabrielle Santos Borges, Maria Isabel Vaz de Melo, Juliana Vaz de Melo Mambrini, Paola Pereira das Neves Snoeck
• Format: Article
• Language: English
• Published: Instituto de Zootecnia 2010-02-01
• Series: Boletim de Indústria Animal
• Subjects: equino; largura escrotal total; idade; peso corporal; raça Campolina
• Online Access: http://revistas.bvs-vet.org.br/bia/article/view/7648
• ISSN: 0067-9615; 1981-4100

The aim of this study was to evaluate Campolina stallions’ testicular measurements in relation to their age and body weight. The right and left testecal mesurements used a pair of compasses to determine length (RL, LL), width (RW, LW), height (RH, LH), and total scrotal width (STW). Twenty five stallions were evaluated and classified into three age groups: Group I (< 60 months), Group II (>60 e < 120 months), and Group III (> 120 months). The biometric testicular parameters for Group I were: 10.0 ± 1.5 cm (RL); 10.1 ± 1.2 cm (LL); 5.8 ± 0.5 cm (RW); 6.2 ± 0.6 cm (LW); 6.6 ± 0.8 cm (RH); 7.0 ± 0.8 cm (LH); 10.6 ± 1.0 cm (STW). The testicular measurements for GII were: 10.9 ± 1.1 cm (RL); 10.4 ± 0.8 cm (LL); 6.5 ± 0.5 cm (RW); 6.8 ± 0.6 cm (LW); 7.5 ± 1.0 cm (RH); 7.8 ± 0.5 cm (LH); 12.0 ± 1.0 cm (STW). For GIII the same measurements were: 9.8 ± 0.8 cm (RL); 10.3 ± 0.5 cm (LL); 7.0 ± 0.8 cm (RW); 7.4 ± 0.8 cm (LW); 7.1 ± 0.7 cm (RH); 7.6 ± 1.1 cm (LH); 11.9 ± 0.8 cm (STW). The length, width and height of the left and right testis did not differ significantly from stallions measured. The average width of the testis was the only measurement that differ between stallions from group I and stallions from group II and III (P<005). Total scrotal width had medium correlation with age (r = 0.42, P <0.05), and poor correlation with body weight (r=0.34, P>0.05).