Abstract
Objective:The aim of this research is to investigate the relationship level of oxytocin released and the tactile stimulation of the cervix in Holstein cattle from the northwestern arid regions in México.Materials and Methods:The cervixes of 10 Holstein Friesian dairy cows in mid-lactation were manually stimulated for 60 sec. Oxytocin released in the blood was analyzed before and after stimulation. The enzyme-linked immunosorbent assay was used in the analysis to make oxytocin detectable by spectrometry techniques and by converting the luminescence absorbance of each sample into pg per mol.Results:The study revealed that tactile stimulation of the cervix increased oxytocin levels. The highest increase in oxytocin level was 10,940.8222 pg/mol, while the lowest increase in oxytocin level was 1,830.94254 pg/mol. Besides, the milk production by tactile stimulation of the cervix had a higher milk yield and a p-value of 9.4 × 10−4 (p < 0.05) in comparison to the monthly average without tactile stimulation.Conclusion:Tactile stimulation of the cervix activates the Ferguson reflex and increases the oxytocin released in the blood and increases the milk released from the alveolar glands.
Highlights
The cervix is an organ located between the vagina and the uterus
Tactile stimulation of the cervix activates the Ferguson reflex and increases the oxytocin released in the blood and increases the milk released from the alveolar glands
The hypothalamus controls the release of oxytocin from the neurohypophysis and the oxytocin contributes to the milk production [24]
Summary
The cervix is an organ located between the vagina and the uterus. The cervix has a cylindrical structure within the reproductive tract. Res., 7(4): 608–613, December 2020 and the bordering southwestern USA, where daytime temperatures can reach at least 50°C This hot weather causes dairy cows to experience heat stress for prolonged periods [11]. The effects of tactile stimulation on the oxytocin release and the milk flow profile have been investigated at the whole udder level [13] and a quarter level [14,15]. The results have proved that tactile pre-stimulation of the udder improves oxytocin release and the distribution of milk constituents during milking, and can be precisely described at quarter levels [16,17]. This study aimed to investigate the effect on oxytocin release via the Ferguson reflex (FR) of tactile stimulation of the cervix [23] in Holstein-Friesian cows from northwestern arid regions of México. All treatments increased the milk release after stimulation compared to their monthly average milk delivery
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