Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/46077
Title: Interrelationships among the length of milk stasis, tight junction permeability to lactose and monovalent cations, rate of milk secretion and composition in dairy goats traditionally milked once a day
Authors: Torres Krupij, Alexandr
Castro Navarro, Noemí 
Suárez Trujillo, Aridany 
Argüello Henríquez, Anastasio 
Capote Álvarez, Juan Francisco 
UNESCO Clasification: 3104 Producción Animal
Keywords: Synthetic Activity
Udder Morphology
Mammary
Disruption
Frequency
Integrity
Interval
Quality
Ability
Yield
Dairy goat
Extended milking
Milk stasis
Tight junction
Issue Date: 2016
Publisher: 0921-4488
Journal: Small Ruminant Research 
Abstract: Canarian goats are well adapted to extended milkings. To gain more information on this adaptation, 32 dairy goats in mid lactation belonging to Majorera and Palmera breeds were subjected to milk stasis of 10,14,24 (the normal routine), 28 and 32 h; and milk volumes, milk composition, concentrations of Na+ and K+ in milk and blood plasma and plasma lactose were measured at each interval. The major findings were: i. Milk stasis did not induce changes in milk fat and milk protein secretion rates. In contrast, the extension of the interval between milkings was associated with a decrease of milk lactose secretion rate, ii. Comparison of the relative changes of Na+ and K+ in milk with blood and plasma lactose content indicates that the tight junction (TJ) permeability to lactose was much higher than to monovalent cations. It was concluded that an important element in the adaptation of Canarian dairy goats to extended milking intervals may be related to maintenance TJ resistant to paracellular leakage, particularly to passage of monovalent ions. Thus, the present study increases the understanding on adaptation of small ruminant to extended milking interval, which has been related so far to their high cistern storage capacity.
URI: http://hdl.handle.net/10553/46077
ISSN: 0921-4488
DOI: 10.1016/j.smallrumres.2016.03.022
Source: Small Ruminant Research [ISSN 0921-4488], v. 137, p. 85-90
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