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Variation of milk components in the Italian Brown cattle

Published online by Cambridge University Press:  29 October 2015

Erika Frigo ,
Antonia B Samorè ,
Liliana Reghenzani ,
Nicola Bergomi ,
Maria G Strillacci ,
Fausta Schiavini ,
Raphaelle TMM Prinsen ,
Maria C Cozzi ,
Marco Serra  and
Attilio Rossoni
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Erika Frigo
Affiliation:
Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare (VESPA), Università degli Studi di Milano, Via Celoria 10, 20133 Milano, Italia
Antonia B Samorè
Affiliation:
Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare (VESPA), Università degli Studi di Milano, Via Celoria 10, 20133 Milano, Italia
Liliana Reghenzani
Affiliation:
Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare (VESPA), Università degli Studi di Milano, Via Celoria 10, 20133 Milano, Italia
Nicola Bergomi
Affiliation:
Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare (VESPA), Università degli Studi di Milano, Via Celoria 10, 20133 Milano, Italia
Maria G Strillacci
Affiliation:
Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare (VESPA), Università degli Studi di Milano, Via Celoria 10, 20133 Milano, Italia
Fausta Schiavini
Affiliation:
Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare (VESPA), Università degli Studi di Milano, Via Celoria 10, 20133 Milano, Italia
Raphaelle TMM Prinsen
Affiliation:
Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare (VESPA), Università degli Studi di Milano, Via Celoria 10, 20133 Milano, Italia
Maria C Cozzi
Affiliation:
Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare (VESPA), Università degli Studi di Milano, Via Celoria 10, 20133 Milano, Italia
Marco Serra
Affiliation:
ARAL (Associazione Regionale Allevatori della Lombardia), Crema, Italy
Attilio Rossoni
Affiliation:
ANARB (Associazione Nazionale Allevatori Razza Bruna Italiana), Bussolengo, Italy
Alessandro Bagnato*
Affiliation:
Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare (VESPA), Università degli Studi di Milano, Via Celoria 10, 20133 Milano, Italia
*
*For correspondence; e-mail: alessandro.bagnato@unimi.it
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Abstract

The aim of this study was to evaluate the variations of protein, casein, saturated (SFA), unsaturated (UFA), monounsaturated (MUFA), polyunsaturated (PUFA) fatty acids contents and cheese yield in the milk of two groups of Italian Brown cows conventionally reared in indoor period of housing or consuming pasture during the summer months in 2008 and 2013. Milk components were obtained from samples collected during the national routine (conventionally reared) and ‘extraordinary’ (pasture period) milk recording scheme in herds located near Sondrio (Lombardia, Italy). Milk samples were processed with the MilkoScanTM FT6000 for the identification of milk casein, SFA, UFA, MUFA and PUFA composition. The groups were analysed separately per year and the environmental factors affecting milk protein, casein, and fatty acids contents (pasture/indoor, parity, data of sampling, days in milk, days from collection to analysis) were included in the MIXED procedure of SAS 9.3. A total of 778 milk samples were available, including 234 records from indoor and 544 observations from pasture feeding. Pasture intake affected the content of casein (%) and the proportion of fat in milk (g/100 g), enhancing milk casein levels (from 2·90 to 3) and reducing the concentration of milk SFA in milk from grazing cows (from 2·29 to 1·92). Additionally, the cheese yield was calculated as ‘kg of cheese per 100 kg of milk’ and resulted to be 10·4 and 12 in 2008 from milk of cows reared indoor and with pasture based diet, respectively. The dairy industry should take advantage of the milk production during grazing periods from which high quality products may be obtained.

Keywords

Caseinfatty acidscheese yieldpastureItalian Browns Swiss cattle
Type
Research Article
Information
Journal of Dairy Research , Volume 82 , Issue 4 , November 2015 , pp. 485 - 490
Copyright
Copyright © Proprietors of Journal of Dairy Research 2015 

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