What question did this study set out to answer?

To examine how detailed milk composition, rennet clotting, coagulum development, and syneresis change in dairy cows over the first nine weeks of lactation.

August 1, 1984Journal of Dairy Research

Chemical composition and coagulating properties of renneted milks from cows during early lactation

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To examine how detailed milk composition, rennet clotting, coagulum development, and syneresis change in dairy cows over the first nine weeks of lactation.
Monitored milk collected from 4 Friesian cows weekly during the first 9 weeks of lactation.
Measured milk pH, concentrations of major protein fractions, minerals, fat, and lactose, and evaluated rennet clotting time, coagulum strength, and syneresis at pH 6.4.
Concentrations of casein, fat, citrate, calcium, magnesium, inorganic phosphate, and sodium decreased significantly over early lactation, while lactose and pH increased.
Coagulum strength decreased significantly over the lactation period, showing strong positive correlations with casein (especially α-casein), fat, calcium, and other minerals.
Rennet clotting time showed no significant temporal trend, but syneresis rate increased as coagulum strength and calcium content decreased.

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Implication

Longitudinal analysis reveals declining milk mineral and casein levels decrease coagulum strength in early-lactation cows, highlighting biochemical determinants of cheese-making quality.

Cite This Study

Grandison et al. (1984) studied this question.

synapsesocial.com/papers/6a903798c63bb9fb07dd7e15 https://doi.org/10.1017/s0022029900023700

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Implication

Longitudinal analysis reveals declining milk mineral and casein levels decrease coagulum strength in early-lactation cows, highlighting biochemical determinants of cheese-making quality.

Chemical composition and coagulating properties of renneted milks from cows during early lactation

Key Points

Discussion

Implication

Cite This Study

Chemical composition and coagulating properties of renneted milks from cows during early lactation

Key Points

Discussion

Implication

Cite This Study

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