What question did this study set out to answer?

To determine the effects of increasing milking frequency from twice to thrice daily on milk yield, composition, and secretion rates across different stages of lactation in goats.

October 10, 1983Quarterly Journal of Experimental PhysiologyOpen Access

The Effects of Milking Thrice Instead of Twice Daily on Milk Secretion in the Goat

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Authors

AHAlan J. HendersonScottish Environment Protection Agency DBDavid R. BlatchfordUniversity of Strathclyde MPM. PeakerNHS Ayrshire and Arran

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Implication

Experimental trial demonstrates that thrice-daily milking increases milk yield locally in dairy goats, indicating an autonomous intramammary regulatory mechanism.

Key Points

To determine the effects of increasing milking frequency from twice to thrice daily on milk yield, composition, and secretion rates across different stages of lactation in goats.
Evaluated milk yield under twice-daily milking at 16/8 h versus 12/12 h intervals in goats maintained on constant nutritional intake.
Conducted unilateral thrice-daily milking on one mammary gland for one week while milking the contralateral gland twice daily at weeks 3, 7, 16, 24, and 33 of lactation.
Measured unilateral and bilateral milk yields, analyzed concentrations of Na+, K+, Cl-, lactose, protein, fat, and citrate, and tracked secretion rates across diurnal periods.
Thrice-daily milking increased milk yield by approximately 8% across all stages of lactation, with no change in the concentrations of Na+, K+, Cl-, lactose, protein, fat, or citrate.
The stimulatory effect was strictly confined to the gland milked thrice daily, displaying a rapid onset and prompt return to baseline upon resuming twice-daily milking.
Milk secretion rates during thrice-daily milking exhibited significant diurnal variation, peaking during the 23.00–07.00 h interval and reaching their lowest levels between 07.00 and 15.00 h.

Cite This Study

Henderson et al. (1983) studied this question.

synapsesocial.com/papers/6a0dadb348a82a5ce309cf0b https://doi.org/10.1113/expphysiol.1983.sp002754

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Implication

Experimental trial demonstrates that thrice-daily milking increases milk yield locally in dairy goats, indicating an autonomous intramammary regulatory mechanism.

The Effects of Milking Thrice Instead of Twice Daily on Milk Secretion in the Goat

Discussion

Member takes

Implication

Key Points

Cite This Study

The Effects of Milking Thrice Instead of Twice Daily on Milk Secretion in the Goat

Discussion

Member takes

Implication

Key Points

Cite This Study

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