BACKGROUND Long-chain polyunsaturated fatty acids (PUFAs) of the omega-3 family are important for sperm membrane integrity, sperm motility and viability. There are evidences to suggest that dietary supplementation with omega-3 fatty acids affects reproduction in men and males of different animal species. Therefore, the aim of current study was to investigate changes in the quality parameters of...

The purpose of this study was to evaluate annual semen characteristics of pigeons (Columba livia). Ten selected male pigeons, aged 2 to 5 yr were housed under natural environmental conditions, and semen collection was conducted via a digital massage twice weekly throughout the year. The success rate of semen collection in a total of 920 attempts was 40% (371/920) over the whole year. The highes...

BACKGROUND Development of a reproducible baboon in vitro fertilization (IVF) system require optimized and reproducible sperm parameters. The objective of this study was to document basic spermatology values and investigate the reproducibility of these variables in the same baboons 1 or 3 months later in a larger number of baboons. METHODS In this prospective study, sperm quality (semen volume...

BACKGROUND A high body mass index (BMI) has been associated with reduced semen quality and male subfecundity, but no studies following obese men losing weight have yet been published. We examined semen quality and reproductive hormones among morbidly obese men and studied if weight loss improved the reproductive indicators. METHODS In this pilot cohort study, 43 men with BMI > 33 kg/m² were f...

The aim of the present study was to compare assessments of sperm concentration and sperm motility analysed by conventional semen analysis with those obtained by computer-assisted semen analysis (CASA) (Copenhagen Rigshospitalet Image House Sperm Motility Analysis System (CRISMAS) 4.6 software) using semen samples from 166 young Danish men. The CRISMAS software identifies sperm concentration and...

The present study was conducted to determine the effect of seasonal and climatic variations on semen characteristics of Nili-Ravi buffalo breeding bulls in Sahiwal and Bahawalpur districts of Punjab, Pakistan. For this purpose, 14 adult NiliRavi buffalo breeding bulls (n=7 from each of Semen Production Unit (SPU) Qadirabad, Sahiwal and SPU Karaniwala, Bahawalpur), were used. Semen samples were ...

Interest in the preservation of endangered breeds such as the Blanca Andaluza goat, has increased and some steps should be therefore taken to ensure it. The study was designed to determine the seasonal reproductive pattern of Blanca Andaluza bucks, and whether this affects the quality of their semen and its freezability over the year. Seven bucks were used and their body weight, testicular weig...

VII-VIII List of abbreviations XIV List of tables XVI List of figures XVIII List of appendices XXVI 1 2 2.1 2.1.1 2.1.1.1 2.1.1.2 2.1.1.3 2.1.1.4 2.1.1.5 2.1.1.6 2.1.1.7 2.1.2 2.1.2.1 2.1.2.2 2.2 2.2.1 2.2.2 2.3 2.4 2.4.1 2.4.1.1 2.4.1.2 2.4.2 2.4.3 Introduction Literature review Boar reproductivity Boar sperm quality traits Appearance of semen Sperm concentration Sperm motility Semen volume Pl...

Predicting potential fertility and eventual egg hatchability in chickens can be done by evaluating the quality of semen. This study's objective was to describe semen characteristics three different age groups Horasi chicken ecotype cocks (24-32, 28-36, 32-40 weeks). From 20 cocks; 6 (24-32 weeks), (28-36 8 (32-40 weeks) over course four weeks (5-29th Dec 2022), 80 samples total were taken. Sper...

Purpose: To evaluate the drop-to-drop and pellet-to-pellet repeatability and stability of frozen sperm pellets. Methods: Ten pellets were thawed per batch (low and normal concentration) and evaluated by two investigators to establish a quality control chart. Then low and normal concentration pellets were thawed and evaluated daily for 10 days by both investigators. The values for both investiga...