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An attempt was made at identifying the activity of acid phosphatase (AcP) and β-Nacetylhexosaminidase (Hex) in the whole raw milk of cows maintained on ecological farm and over the autumn/winter and spring/summer seasons (AW and SS season, respectively) fed with typical feeding rations. Both enzymes play a crucial role in animals’ metabolism, affect the technological properties of milk and are indicators...
Background. Development of modern aquaculture and the increasing consumer demand provoke improvements in the complex breeding technologies of economically valuable fish species. Wels catfish, Silurus glanis L. (known also as the European catfish), because of its breeding and consumption values, becomes an increasingly common object of breeding. The objective of the presented work was the evaluation...
The aim of this experiment was to study how reduced content of protein in each feeding stage during raising influences carcass fattiness and, in consequence, the chemical composition, and meat physicochemical and sensory properties in 6-week-old quail. The material comprised 150 one-day-old Pharaoh quail divided into three experimental groups. The birds of the group I received feeds with nutritional...
The studies were carried out on 40 young boars of the line 990. On their 70 days of age, the boars were divided into two groups; the control group received 0.2 mg Se and 30 mg vitamin E while the experimental group received 0.5 mg Se + 60 mg vitamin E per 1 kg of feed mixture. The feeding test was carried on from 70 days until 180 days of age. During the experiment the boars were subjected to live...
The experimental fattening pigs (30-105 kg) were fed ad libitum diets containing rapeseed meal, according to The Nutrient Requirements of Pigs or the free-choice method (free access to two isoenergy diets with different protein concentrations). The experiment was performed on 24 crossbred pigs (♂ Duroc x ♀ Polish Landrace), divided into three feeding groups: group I fed a cereal-soybean diet (1)...
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