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The aim of this study was to evaluate the effects of dose, start time, and application interval of recombinant bovine somatotropin (rbST) on performance, health, and reproduction parameters of crossbred Holstein × Gyr dairy cows (3/4 and 7/8). A 2 × 2 × 2 factorial study was designed to test the...

MicroRNA (miRNA) is an endogenous non-coding small RNA, which exists in animals, plants and viruses, and participates in various physiological processes mainly by regulating the translation and mRNA stability of target genes. The placenta is a temporary endocrine organ that exists during pregnancy...

The application of molecular genetic markers in breeding programs is the basis for the future improvement of existing sheep breeds and preservation of genetic diversity in this animal species. This review aims to survey the literature on genetic markers suitable for inclusion in reproductive...

Embryonic freezing plays an important role in assisted reproductive technology in mutton sheep. It allows ewes to undergo multiple plants during the ovarian stimulation cycle. Embryo transfer improves the pregnancy rate of ewes and multiple pregnancy, and the programmed freezing method is widely...

The aim of the present study was to test three protocols for synchronization of estrus and fertility in merino sheep. 3 experimental groups were formed, depending on the duration of progestagen treatment (FGA sponges) and PMSG dose: Group 1 (n = 12) - 12 days + 500 UI. Group 2 (n = 12) - 12 days +...

This issue contains 11 articles on the reproductive performance of northern Australia beef herds, including the nutritional, breeding and herd health management practices and of the environment; descriptive analysis of monitored reproductive performance; descriptive analysis of major factors...

In this investigation, we examined the efficiency of PRP as a therapy for inactive ovary (IO) in rabbits. IO in rabbits was induced by administration of D-galactose (200 mg/kg) (dissolved in saline, 0.2mL/rabbits/day) for ten consecutive days. Rabbits divide into three groups. After preparing two...

The present study was aimed to see the effect of subcutaneous injection of melatonin @ 18 mg/50 kg b.wt. on estrus induction and conception rate in anestrus buffalo heifers (n=24). Among the heifers treated with melatonin (n=14), 6 (42.86%) animals showed behavioral estrus within 4-28 days of...