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The Effect of Supplementation on Selenium and Zinc Content in Blood and Milk of Dairy Cows
(International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia, 2014)
Milk is an important source of microelements for calves during the suckling period as well as in human nutrition. Concentration of trace elements in blood and their secretion via milk can significantly change depending on ...
Different Approaches to Assess the Welfare of Dairy Cows with Some Results in Serbia
(International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia, 2014)
In this paper, different methodologies for assessing the welfare of dairy cows, such as Animal Needs Index, system of welfare indicators, system of behaviour indicators and the Welfare Quality® assessment protocol for ...
The most common health disorders and welfare of dairy cows and calves / Najčešći zdravstveni poremećaji i dobrobit muznih krava i teladi
(Institut za stočarstvo, Beograd, 2014)
Three farms of dairy cows (A, B and C) were observed for health disorders of dairy cows and suckling calves. Farm A is farm with tied system of rearing, with 1100 cows, while farms B and C have 400 and 600 cows kept loose ...
Effect of physical effectiveness on digestibility of ration for cows in early lactation
(Wiley-Blackwell, Hoboken, 2014)
A study was conducted to investigate the effects of a diet particle size on nutrient digestibility in cows in early lactation. Treatments were diets with forage to concentrate ratio 43:57% in diet dry matter, with four ...
The relationship between rearing system, animal needs index and dairy cows milk traits
(Croatian Dairy Union, 2014)
This study was conducted in five dairy farms with different capacity (farms A with 47, B 12, C 10, D 14 and E 24 Simmental cows, aged between 4 and 5 years and body weight about 600 kg) in order to determine a relationship ...
Udder-related risk factors for clinical mastitis in dairy cows
(University of Zagreb, Facultty of Veterinary Medicine, 2014)
A cross-sectional longitudinal survey was carried out between February 2009 and January 2010 to evaluate udder-related risk factors for clinical mastitis occurring in dairy herds. Data were used from three dairy farms. ...
Determination of economic selection index coefficients for dairy cows / Utvrđivanje koeficijenata ekonomskog selekcijskog indeksa za mlečne krave
(Naučno društvo agrarnih ekonomista Balkana, Beograd, Institut za ekonomiku poljoprivrede, Beograd i Akademija ekonomskih nauka, Bukurešt, 2014)
There is no research regarding economic effects of genetic improvement for dairy cattle in Serbia. Therefore, the goal of this paper is to determine economic values for various production traits (milk yield, milk fat content ...
Effects of Inorganic and Organic Selenium Supplementation on Blood and Milk Selenium Concentration in Dairy Cows
(International Symposium on Animal Science 2014, 23-25th September 2014, Belgrade, Serbia, 2014)
Selenium is an important trace element in the nutrition of dairy cows because it prevents oxidative damages of tissue and in that way protects the animals from the incidence of various disorders. Addition of various levels ...