Reproduction of small ruminants can be controlled by several methods developed in recent
decades. Some of these involve administration of hormones that modify the physiological …

Melatonin is a molecule present in a multitude of taxa and may be ubiquitous in organisms. It
has been found in bacteria, unicellular eukaryotes, macroalgae, fungi, plants and animals. A …

Melatonin has a wide variety of beneficial actions at the level of the gonads and their
adnexa. Some actions are mediated via its classic membrane melatonin receptors while …

Sheep and goats are seasonally polyestrous, that is, they present a seasonal pattern of
reproduction, to ensure that lambs and kids are born at the optimal time of the year …

Cryopreservation harms spermatozoa at different levels and thus impairs their fertilizing
ability. The role of melatonin in protecting spermatozoa from different kind injuries has been …

Although human seminal fluid contains melatonin and spermatozoa reportedly possess
membrane melatonin receptors, there are no experimental studies that have ascertained the …

Background Some breeds of sheep are highly seasonal in terms of reproductive capability,
and these changes are regulated by photoperiod and melatonin secretion. These changes …

We recently demonstrated the presence of melatonin in ram seminal plasma and differences
in its concentration in this fluid between the breeding and nonbreeding season. In this study …

Melatonin is a neurohormone secreted by the pineal gland whose concentrations in the
body are regulated by both the dark–light and seasonal cycles. The reproductive function of …

We aimed to investigate the effect of melatonin on bovine frozen‐thawed semen and its
impact on fertilization outcome. Plasma membrane integrity, mitochondrial activity, acrosome …