Biometric Testicular and Hormonal Serum Profiles of Arabian Stallion during Breeding Season in Algeria

Abstract

Several studies have shown relationship of biometric testicular, hormonal profiles and fertility. Objective of present research were to predict the fertility of stallion by biometric testicular and hormonal analysis. Measurement of the testis of adults Arabian stallions (n=36) from National Haras Chaouchoua of Tiaret, Algeria. The length (TL), the width (TW), the height (TH), and the scrotal width of the testicles (TSW) during three consecutive seasons (April: 2014(April: -2016. From these measurements, the total testicular volume (TTV), the daily sperm output (DSO) and the daily sperm product (DSP) were calculated. The serum testosterone concentration, the follicle-stimulating hormone (FSH) and the luteinizing hormone (LH) were also evaluated by IMMUNOTECH® during April 2016.The scrotal width (TSW: 11.06 ± 1.55) cm, was very highly correlated to the age and the body weight of the stallions as well as with all the testicular parameters (p<0.01). The scrotal width (TSW) was correlated positively to testosterone, (r=0,14).The examination of the testicular size is an important criteria to estimate for selection the stallions with highest fertility potential.

Monthly Evaluation of Testicular Biometry and Sexual Behavior With Respect to Seminal Aspects of Arabian Stallions Under Subtropical Conditions in Kuwait

“…This was comparable with previous reports showed that testicular size, and sperm production were significantly affected by season, and the best values were recorded in May, June, or July (Pickett, 2018). We also reported that the testicle biometry as well as the width of total scrotum were higher during summer season compared with other seasons, which is in agreement with previous studies reported that stallions have higher testicular measurements during summer and spring, which subsequently leads to increase sperm production and libido (Hind et al, 2021).…”

Effect of Testosterone, Dihydrotestosterone, Estradiol and Cortisol on the Quality of Fresh and Cryopreserved Stallion Sperm

“…The results of measuring the concentrations of hormones in the blood plasma of stallions are shown in Table 2. It is known from the literature that the concentration of testosterone in healthy stallions normally varies from 0.04 to 1.02 ng/ml (Haffner et al 2010;Seale 2010;Hind et al 2021;Basiru et al 2022), while the median estradiol concentration in healthy stallions normally varies from 13.40 -66 pg/ml (Haffner et al 2010;Basiru et al 2022). The normal cortisol concentration in healthy stallions varies from 19.88 -70 ng/ml (Tamanini et al 1983;Villani et al 2006;Haffner et al 2010).…”