Effects of milk protein genotype on milk: milk yield, fat, protein, casein
Main researcher
: LUKAČ-HAVRANEK, JASMINA (74232) Assistants
MAGDALENIĆ, BRANKA (160590)
POLOVIĆ, VLASTA (168352)
PROHASKA, JOSIP (168326)
MIKAČIĆ, KARLO (171682)
UREMOVIĆ, ZVONIMIR (43860)
ANTUNAC, NEVEN (118470)
MILETIĆ, SILVIJA (31412)
SAMARŽIJA, DUBRAVKA (3286)
ŠĆURIC, MARIJA (168330)
POSAVI, MARIJAN (122360)
KIRIN, SLAVKO (168363)
Type of research: applied Duration from: 02/01/91. to 12/31/95. Papers on project (total): 13
Institution name: Agronomski fakultet, Zagreb (178) Department/Institute: Dairy Science Department Address: Svetošimunska 25 City: 10000 - Zagreb, Croatia
Communication
Phone: 385 (0)1 233-50-77 /2108
Fax: 385 (0)1 215-300
E-mail: icurik@srce.hr
E-mail: aneven@srce.hr
Phone: 385 (0)1 233-50-77/2108
Fax: 385 (0)1 215-300
Summary: In countries with the most developed agriculture,
quantity of protein is the most valuable component of milk.
Unfortunately, Croatia didn't follow her neighbors (European countries
with developed agriculture) and evaluates milk on the basis of milk and
fat quantity. However, the value of milk protein is not only quantitative,
so in the last decades investigations concerning milk protein
polymorphisms as milk protein qualitative value instigates attention
in many countries. Milk protein genetic variants have been shown to be
associated with milk production and manufacturing properties of milk
but results are not consistent. It is generally assumed that genetic
variant k- casein B and á-lactoglobulin B have better
manufacturing properties and better randman in cheese production although
there are different reports. There are many reports of association
between milk protein genetic variants and milk production and because
results are contradictory from population to population final explanation
of these associations is not reached yet. Some theoretical explanations
allow different associations of the same genetic variants concerning
them as a property of certain population. In our project we want to
investigate the effects of milk protein polymorphism for main cattle
breeds in Croatia and to determine could we and how make economic
benefit from their effects on milk production and manufacturing properties
of milk.
Research goals: The aim of present project was to evaluate the
effects of milk protein polymorphisms in cattle and to estimate is it
possible to utilize those effects for improvement of milk production and
milk as a row material for dairy industries. To fulfill our aim it is
necessary; - to study investigations of other authors dealing with the same
or similar problems, - to examine gene and genotype frequencies of milk
protein loci for the main cattle breeds in Croatia, - to investigate the
effects of genes and genotypes of milk proteins on the milk composition
and production, - to investigate the effects of genes and genotypes of
milk proteins on the other factors correlated with milk composition and
production.
COOPERATION - PROJECTS
Name of project
: 4-05-027 Genetski polimorfizmi i zbirka gena
pasmina domaćih životinja u Hrvatskoj Name of institution: Agronomski fakultet, Sveučilišta u Zagrebu,
Zavod za specijalno stočarstvo City: 10000 - Zagreb, Croatia
COOPERATION - INSTITUTIONS
Name of institution
: Laboratory of Dairy Science, Institute of
Food Science Swiss Federal Institute of Technology, prof. dr. Z. Puhan Type of institution: University/Faculty Type of cooperation: Systematic exchange of information City: 8092 - Zurich, Swiss
Name of institution
: Instituto Lattiero Caseario e di
Biotechnologie Agro-Alimentari di Thiene Type of institution: State institute Type of cooperation: Systematic exchange of information City: 36016 - Thiene, Italia
Name of institution
: Imunološki zavod, d.d. Rockfellerova 2 Type of institution: Economical/Production Type of cooperation: Other City: 10000 - Zagreb, Croatia Other information about the project.