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Non-nutritional factors affecting lactation persistency in dairy ewes: a review

Pulina, Giuseppe and Nudda, Anna and Macciotta, Nicolò Pietro Paolo and Battacone, Gianni and Rassu, Salvatore Pier Giacomo and Cannas, Antonello (2007) Non-nutritional factors affecting lactation persistency in dairy ewes: a review. Italian Journal of Animal Science, Vol. 6 , p. 115-141. eISSN 1828-051X. Article.

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Abstract

Milk production is largely related to the shape of the lactation curve. Key elements of the lactation pattern are peak yield, which is the maximum daily yield reached during lactation, and lactation persistency, which is the medium rate of milk yield decrease after the lactation peak. The ideal lactation curve should have a reasonably high peak and a flat trend afterwards. A more persistent lactation is desirable because it is related to better animal health and reduction of feeding costs. Effective strategies to improve lactation persistency require a deep understanding of the main factors that affect this trait, including genetics, hormonal status and administration, udder morphology, seasonal changes, management, animal health (e.g. mastitis), stress and nutrition. This review covers the effects of non-nutritional factors on lactation persistency in dairy sheep.

Item Type:Article
ID Code:961
Status:Published
Refereed:Yes
Uncontrolled Keywords:Dairy sheep, lactation persistency, genetic improvement, milk, Sardinia
Subjects:Area 07 - Scienze agrarie e veterinarie > AGR/17 Zootecnica generale e miglioramento genetico
Area 07 - Scienze agrarie e veterinarie > AGR/19 Zootecnica speciale
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze zootecniche
Publisher:Avenue media on behalf of Scientific Association of Animal Production (ASPA)
eISSN:1828-051X
Publisher Policy:Depositato per gentile concessione dell'ASPA
Deposited On:18 Aug 2009 10:03

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