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Comparison ofrecording results of purebred and crossbred Limousine cattle in Poland.The aim of the study was to compare purebred and crossbred Limousine cattle in respect to theircompliance with the breeding goals and standards adopted by the Polish Association of Breeders and Producers of Beef Cattle. The study wasbased on datafor the years 2002-2015 from the PABPBC and for the years 1996-2001 from...
The aim of thestudy was to assess the utility of selected results of the British Angus breed with respect to their compliance with the goal of racial breeding and standards adopted by the Polish Association of Breeders and Producers of Beef Cattle (PABPBC). The subject of theanalysis were recording results of the British Angus beef cattle breed in Poland. The study wasbased on datafor the years 2002-2014...
The EUROP classification system is based on visual assessment of beef carcass conformation and fatness. The aim was to test the accuracy of the trained and certified abattoir EUROP classifier in Poland relative to national assessors. The results of EUROP system, carried on the 3135 carcasses were analyzed. Assessments were performed in the same conditions on the slaughter line by four independent...
Forty carcasses (38.6-45.9 kg) from male and female (1:1) wild boar, which were shot in one hunting area during the 2014/2015 season, were studied. Samples of MLD were analysed for proximate chemical composition and fatty acid content of IMF as well as shear force and WHC. AI and TI index were calculated. Statistical analysis confirmed a significant (P≤0.05) effect of sex on the water content of MLD,...
Dairy cattle crossbreedingand milk production.The aim of this study was to compare the results of milk performance of purebred Polish Holstein-Frisian (PHF) cows and their crossbreeds (PHF x SRB). Data for the analysis originated from the Polish Federation of Dairy Cattle Breeder and Producers - cows reports. The results indicate a positive influence of the breed on milk composition: fat, protein...
Analysis of Hereford beef cattle recording results in Poland. The aim of the study was to assess the utility of selected results of the British Hereford breed with respect to their compliance with the goal of racial breeding and standards adopted by the Polish Association of Breeders and Producers of Beef Cattle (PABPBC). The subject of the analysis were recording results of the British Hereford beef...
Relationships between milk β-carotene concentrations and the cytological quality of cow’s milk. The objective of the study was to describe the relationship between milk β-carotene concentration and the cytological quality of milk of high yielding cows. The experiment was carried out at the research dairy farm of the Warsaw University of Life Sciences (WULS). From a herd of 320 Polish Holstein Friesian...
Relation between the shape and course of lactation curve and production traits of Polish Holstein-Friesian and Montbeliarde cows. The aim of the study was to examine the relation between shape and course of lactation curve and production traits of Polish Holstein-Friesian and Montbeliarde cows kept under various production systems. The production parameters were based on cows records developed by...
Changes in cow’s milk composition and physical properties during the uninterrupted milking process. The chemical composition of milk determines the nutritional value and technological properties of milk and dairy products. Many studies have been performed on the chemical composition of milk, including fatty acid and protein profile, however a limited number of investigations have determined the changes...
Relationships between production traits and the parity of Polish Holstein-Friesian cows. The objectives of the study was to describe the relationships between milk urea, protein, fat concentrations and the age of Polish Holstein-Friesian cows. The experiment was carried out at the research dairy farm of the Warsaw University of Life Sciences (WULS). From a herd of 320 Polish Holstein Friesian cows...
The aim of the study was comparison of the milk performance of primiparous cows from 6 European countries with Polish Holstein-Friesians, as well as to demonstrate the differences within the different genetic groups. Material consisted of data contained in the dairy reports gathered from 26 farm “Healthy Cow” project. The analysis involved data including milk yield and its chemical composition, i...
Analysis of results assessment of growth of Charolais beef cattle in Poland. The aim of the study was to assess the utility of selected results of the French Charolais breed with respect to their compliance with the goal of racial breeding and standards adopted by the Polish Association of Breeders and Producers of Beef Cattle (PABPBC). The subject of the analysis were recording results of the French...
Comparison of calving course of Charolaise purebreds and their crossbreeds with Polish Holstein-Frisian cows. Calving course of cows of Charolaise breed covered by bulls of the same breed as well as cows of Polish Holstein Friesian breed inseminated with Charolaise bull’s semen was investigated. In purebred population the material was taken from the beef cattle recording scheme provided by the Polish...
Influence of lactation stage on selected blood parameters and biological value of cow milk during pasture season in organic system of production. The disproportion between the cow's genetically determined ability to produce milk and the limits to improving the energy value of feed may be the cause of the metabolic stress of animals kept at organic farms. Negative energy balance has a major impact...
Classification of slaughter animals in EUROP system is obligatory for all EU countries. Visual assessment of beef carcasses determines the level of muscle and fat in scales from E to P and from 1 to 5. At the same time beef carcass is classified into one of five categories of cattle for slaughter from A to E. Visual assessment is not fully objective and is fraught with classifier error, which has...
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