Phenotypic analysis of milk coagulation properties and mineral content of Pinzgauer cattle breed
Manuelian, Carmen L (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Penasa, Mauro (Università di Padova)
Visentin, Giulio (Università di Padova)
Cassandro, Martino (Università di Padova)
De Marchi, Massimo (Università di Padova)

Date:	2018
Description:	6 pàg.
Abstract:	This study aimed to characterize milk coagulation properties (rennet coagulation time, curd-firming time and curd firmness 30 min after rennet addition to milk) and major mineral contents (Ca, Mg, P, K and Na) in Pinzgauer dual-purpose cattle breed. The edited dataset consisted of 7763 milk observations from 851 cows reared in 60 herds in the Alpine area of Bolzano province (Italy). Data were analysed through a linear mixed model which included stage of lactation, parity and their interaction as fixed effects, and cow and herd test date as random effects. Rennet coagulation time, curd-firming time and curd firmness 30 min after rennet addition to milk averaged 22. 66 min, 5. 53 min and 16. 79 mm, respectively. The most abundant minerals were P (1495 mg kg-1) and Ca (1344 mg kg-1), and the least abundant Mg (141 mg kg-1). Compared to their older contemporaries, early-lactating younger animals yielded milk that was more favourable for cheese production (i. e. with shorter coagulation time and stronger curd firmness). Mineral contents were lower in milk of primiparous than multiparous cows, except for Na. Moreover, Ca, Mg, P and Na contents decreased from parturition to peak of lactation and increased thereafter, except for K, which exhibited an opposite trend. Our results showed that Pinzgauer breed produced milk with better coagulation properties and mineral content, from a technological point of view, in first than later parities and in early than late lactation. The characterization of milk coagulation properties and mineral content in autochthonous breeds is important to increase their value and marketability of their products.
Rights:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Published in:	Archives Animal Breeding, Vol. 61 Núm. 2 (2018) , p. 215-220, ISSN 2363-9822

DOI: 10.5194/aab-61-215-2018

6 p, 158.5 KB

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