title: Estimation of economic values for milk coagulation properties in Italian Holstein-Friesian cattle.
abstract: The economic values (EV) of production traits, rennet coagulation time (RCT, min), and curd firmness (a30, mm) were derived for Italian Holstein-Friesian dairy cattle, based on the Grana Padano cheese industry. Three different sets of EV for RCT and a30 were estimated, assuming +2.5% (scenario 1), +5% (scenario 2), and +10% (scenario 3) increment in cheese yield due to the effect of milk coagulation properties (MCP). A model was developed to simulate the transformation of milk into Grana Padano cheese. The EV of RCT and a30 were -€2.213, -€4.426, and -€8.852/min, and €0.877, €1.755, and €3.509/mm for scenarios 1, 2, and 3, respectively. Relative emphasis of traits in the breeding objectives of the Italian Holstein-Friesian dairy cattle population should account for the effect of MCP on cheese yield. Economic values for milk components and MCP were affected by changes of dairy products, whereas variations of feed prices did not influence EV of RCT and a30.
authors.affiliation: Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro (PD), Italy. Electronic address: martino.cassandro@unipd.it.
authors.forename: M
authors.initials: M
authors.lastname: Cassandro
authors.affiliation: Institute of Veterinary Medicine and Animal Sciences, Estonian University of Life Sciences, Kreutzwaldi 1, 51014 Tartu, Estonia.
authors.forename: D
authors.initials: D
authors.lastname: Pretto
authors.affiliation: Institute of Veterinary, Animal and Biomedical Sciences, Massey University, Private Bag 11-222, Palmerston North, New Zealand.
authors.forename: N
authors.initials: N
authors.lastname: Lopez-Villalobos
authors.affiliation: Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro (PD), Italy.
authors.forename: M
authors.initials: M
authors.lastname: De Marchi
authors.affiliation: Department of Agronomy, Food, Natural Resources, Animals and Environment, University of Padova, Viale dell'Università 16, 35020 Legnaro (PD), Italy.
authors.forename: M
authors.initials: M
authors.lastname: Penasa
mesh_terms: D000818:Animals; D001947:Breeding; D002417:Cattle / Q000502:physiology*; D002611:Cheese; D012085:Chymosin; D008892:Milk / Q000737:chemistry*; D010641:Phenotype
chemical_list: C025350:rennet; D012085:Chymosin
keywords: Italian Holstein-Friesian cattle; economic value; milk coagulation property; milk production