Ireneusz Ryszard Antkowiak

HEALTH PROBLEMS OF DAIRY COWS DURING INTERPREGNANCY PERIOD AND THEIR RELATIONSHIP WITH REPRODUCTION PERFORMANCE

Jarosław Pytlewski, Ireneusz Ryszard Antkowiak, Ewa Czerniawska‐Piątkowska

Each disease or disorder reduces reproductive capacity of cows, an intriguing issue is connected with the identification of consequences of this effect on reproduction parameters. The aim of this study was to determine (in view of selected factors) the incidence rate of …

pl (code pays fourni par la source)

Effect of herbal feed additives on milk performance and health status of dairy goats

Jacek Antoni Wójtowski, Jan Pikul, Przemysław Łukasz Mikołajczak, Michał Czopowicz et autres

Introduction: Interest is increasing in natural feed additives that improve animal health, raise farming productivity and enhance the quality of animal products. These additives, especially polyphenols, are biologically active chemical compounds found in plants. Material and Methods: Sixty dairy goats were randomly …

pl, ie (code pays fourni par la source)

PROCESSABILITY OF MILK IN THE PRODUCTION OF CURD CHEESES ON FAMILY FARMS IN THE SUMMER AND WINTER SEASONS

Grażyna Czyżak‐Runowska, Jacek Antoni Wójtowski, Jarosław Pytlewski, Ireneusz Ryszard Antkowiak et autres

The aim of the study was to compare quality of curd cheeses produced from raw and pasteurized milk in a family farm in the summer and winter seasons. Conducted analyses showed that the season of the year, in which milk was produced, …

The coexistence of several microbial species at the same site of bovine mammary gland parenchyma infection and their mixed infections

P. Dudko, S. Winiarczyk, Przemysław Majewski, Ireneusz Ryszard Antkowiak et autres

The purpose of this study was to analyse both negative results of bacteriological cultures and the coexistence of several pathogens at the same intramammary inflammatory focus within bovine udder parenchyma in order to compare the health status of cows’ udders in 1985 …

pl (code pays fourni par la source)

Leverage of Essential Oils on Faeces-Based Methane and Biogas Production in Dairy Cows

Jakub Mazurkiewicz, Pola Sidoruk, Jacek Dach, Małgorzata Szumacher‐Strabel et autres

Currently, there is an ongoing intensive search for solutions that would effectively reduce greenhouse gas emissions (mainly methane) into the environment. From a practical point of view, it is important to reduce methane emissions from cows in such a way as to …

pl, nl (code pays fourni par la source)

THE EFFECT OF SELECTED FACTORS ON REARING PERFORMANCE OF CHAROLAIS CALVES

Jarosław Pytlewski, Ireneusz Ryszard Antkowiak, Ewa Czerniawska‐Piątkowska

The aim of this study was to determine the effect of selected factors on rearing performance of Charolais calves to day 90 of life. The experimental material comprised 83 Charolais cows calving in the winter and spring seasons and calves they reared …

pl (code pays fourni par la source)

Lactose Content and Selected Quality Parameters of Sheep Milk Fermented Beverages during Storage

Grażyna Czyżak‐Runowska, Jacek Antoni Wójtowski, Bogusława Łęska, Sylwia Bielińska-Nowak et autres

The aim of the research was to evaluate lactose content and rheological, physical, chemical, and organoleptic parameters during the storage of fermented beverages made from sheep's milk. The research was carried out on natural, probiotic, and Greek-type yogurts, as well as kefir. …

pl (code pays fourni par la source)

ASSESSMENT OF BREEDING AND MILKING PERFORMANCE OF POLISH HOLSTEIN-FRIESIAN BLACK-AND-WHITE COWS (HO) AND CROSSES WITH THE NORWEGIAN RED BREED (HO × NR)

Jarosław Pytlewski, Ireneusz Ryszard Antkowiak, Ewa Czerniawska‐Piątkowska

The aim of this study was to compare breeding performance traits (in heifers) and milking performance (primiparous cows) of the Polish Holstein-Friesian Black-and-White breed (HO) with those of the Polish Holstein-Friesian Black-and-White × Norwegian Red (HO × NR) F1 crosses kept under …

pl (code pays fourni par la source)

THE EFFECT OF SELECTED FACTORS ON MILKING RATE IN POLISH HOLSTEIN-FRIESIAN BLACK-AND-WHITE COWS

Jarosław Pytlewski, Ireneusz Ryszard Antkowiak, Ewa Czerniawska‐Piątkowska

The aim of the study was to investigate the effect of selected physiological factors (age, lactation stage and daily milk yield) on milking rate by Polish Holstein-Friesian Black-and-White cows. The duration of morning, evening and diurnal milking was determined. Milking rate of …

pl (code pays fourni par la source)

Associations between udder and skin cleanliness and somatic cell counts, yield and composition of milk of Polish Holstein-Friesian Black-and-White cows in the autumn-winter season

Jarosław Pytlewski, Ireneusz Ryszard Antkowiak, Daniel Stanisławski

The aim of this study was to determine the associations between the cleanliness of the udder and skin of the hind part of body and somatic cell counts in milk as well as milk yield and its composition in Polish Holstein-Friesian Black-and-White …

pl (code pays fourni par la source)

CHARACTERISTICS OF REPRODUCTION TRAITS IN COWS WITH RECORD LIFETIME MILK YIELDS

Jarosław Pytlewski, Ireneusz Ryszard Antkowiak, Ewa Czerniawska‐Piątkowska

The aim of this study was to characterise basic reproduction indexes and to investigate the effect of selected factors on values of analysed fertility parameters in cows (100 head) with record lifetime milk yields. The experiments were conducted on Polish Holstein-Friesian Black- …

pl (code pays fourni par la source)

The effect of sire's origin on milking performance traits of cows kept in stanchion barns

Jarosław Pytlewski, Ireneusz Ryszard Antkowiak

he aim of this study, conducted under identical environmental conditions and the stanchion barn housing system, was to compare milking performance traits and somatic cell count in milk of daughters sired by Holstein-Friesian Black-and-White bulls from various origin groups. Cows were divided …

pl (code pays fourni par la source)