Scientists have created male pigs that could be used as surrogates capable of producing sperm that contains the genetic blueprint of sought-after pigs.

Polychaetes (Perinereis sp.) have been used extensively in shrimp broodstock maturation diets because of their nutritional value, being rich in protein, fat and minerals. The aims of this study were to identify the reproduction-related gene in polychaetesk and analyze gene expression levels in...

Estrus synchronization is a reproductive biotechnology used to improve artificial insemination or pairing through the manipulation of the estrous cycle at a desirable time. Employing this technique in captive pacas (Cuniculus paca L.) is important because it creates expectation of meeting the...

To determine the effects of maternal status on pregnancy rate and to further improve pregnancy rate of sika deer, this test studied pregnancy influencing factors associated with maternal status by group comparison and chi-square methods. The results showed that age, fatness, post-partum estrus time ...

ESR, FSHβ and leptin are regarded as major genes affecting the growth of follicles. They play a key role in the process of sow reproduction. In this study, Polymerase Chain Reaction (PCR) and Restriction Fragment Length Polymorphism (RFLP) methods were used to detect single nucleotide polymorphisms ...

The aim of this study was to analyse the characteristics of ram spermatozoa subjected to varying concentrations of sucrose, and the influence of storage temperature (22°C or 5°C) prior to vitrification. Ejaculated semen was diluted in TCFEY (tris-citric acid-fructose 20% egg yolk), and two aliquots ...

Seminal plasma removal is routine in goat sperm cryopreservation protocols. The classical washing procedure designed to accomplish this usually leaves the pellet resulting from use of this procedure contaminated with dead sperm, debris, and cells other than sperm. This contamination negatively...

The aim of this study was to compare the use of artificial insemination in time blocks (Artificial Insemination Blocks, AIB) using an 8 and 9 d estradiol-progesterone based protocol. In this experiment, lactating Nelore cows (n=253) were subjected to two estradiol-progesterone based TAI protocols....

Neuromedin S (NMS) has been identified as an endogenous ligand for FM-3/GPR66 and FM-4/TGR-1 which are NMU receptors NMUR1 and NMUR2, respectively. The NMS molecule is present in some peripheral tissues and the central nervous system (CNS), and it had been documented that NMS has fundamental and...

There is a need to develop more integrative sperm quality analysis methods, enabling researchers to evaluate different parameters simultaneously cell by cell. In this work, we present a new multi-parametric fluorescent test able to discriminate different sperm subpopulations based on their labeling ...