Global demand for animal proteins is increasing, necessitating increased efficiency of global
food production. Improving reproductive efficiency of beef cattle, especially bull fertility, is …

The hypothalamic‐pituitary‐gonadal (HPG) axis connects the hypothalamus, pituitary gland,
and gonads. The regulation of reproductive processes includes integrating various factors …

Two experiments were conducted to evaluate sexual development in early-and late-
maturing Nelore (Bos indicus) and Canchim (3/8 Bos indicus× 5/8 Bos taurus crossbred) …

Most bulls that are managed for sale as yearlings are fed high-energy diets in the post-
weaning period to maximize rates of gain in body weight. High-energy diets with adequate …

The objective is to briefly review bovine testes and how they are assessed, with an
emphasis on articles from Theriogenology. Scrotal circumference (SC) is the most common …

Contents In this review, we describe the process of sexual maturation in the bull calf. The
testes of the bull grow relatively slowly until approximately 25 weeks of age and then a rapid …

This study was conducted to evaluate testicular ultrasonogram pixel intensity during sexual
development in bulls and to determine its relationship with semen quality, sperm production …

The objective of the present study was to evaluate the effects of improved nutrition during
calfhood on serum metabolic hormones, gonadotropins and testosterone concentrations …

Sexual development and reproductive function were studied in 22 Angus× Charolais and 17
Angus bulls from 6 to 16 mo of age. Associations of average daily gain (ADG) and body …

The objective of the present study was to characterize the effects of nutrition on circulating
concentrations of metabolic hormones, gonadotropins, and testosterone during sexual …