FPUTS seria Agricultura, Alimentaria, Piscaria et Zootechnica, 2022

Stały URI zbioru

https://oa.zut.edu.pl/handle/20.500.12539/762

Przeglądaj

Przeglądaj FPUTS seria Agricultura, Alimentaria, Piscaria et Zootechnica, 2022 wg Autor "Czerniawska-Piątkowska, Ewa"

Teraz wyświetlane 1 - 5 z 5
  • Miniatura
    PozycjaOpen Access
    Analysis of Polymorphism in the NUCB2 Gene and the Milk Production Traits of Polish Holstein-Friesian Cattle
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2022) Szalast, Daria K.; Kowalewska, Inga; Czerniawska-Piątkowska, Ewa; Department of Genetics, West Pomeranian University of Technology, Szczecin, Poland; Department of Genetics, West Pomeranian University of Technology, Szczecin, Poland; Department of Ruminant Science, West Pomeranian University of Technology, Szczecin, Poland
    The aim of the study was to analyze the single nucleotide substitution polymorphism (SNP) located in exon 9 (1079 G>T, rs471862956) of the gene encoding nucleobindin-2 (NUCB2) in relation to milk production traits such as milk, protein and fat yield and protein and fat content in milk. The research was carried out in a herd of Polish Holstein-Friesian black and white cattle, and genotyping of individual animals was carried out using PCR-RFLP. The most common genotype is the heterozygous genotype (0.53), and the more frequent allele is the T allele (0.52). The analysis of the obtained results showed that there are statistically significant relationships at the level of P ≤ 0.05 and P ≤ 0.01 between individual genotypes of the polymorphism studied and the considered milk performance characteristics. It was observed that individuals with the TT homozygous genotype were characterized by the highest values of such traits as: milk yield as well as fat and protein yield. However, in the case of animals of the homozygous GG genotype, it was observed that the milk obtained from them was characterized by the highest fat and protein content.
  • Miniatura
    PozycjaOpen Access
    Analysis of Production and Reproduction Indicator of Polish Holstein-Friesian Cattle Oin Three Consecutive Lactations.
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2022) Stefaniak, Wiktoria P.; Czerniawska-Piątkowska, Ewa; Kowalewska-Łuczak, Inga; Kostiuk, Volodymir; Melnyk, Oleg; Mylostyvyi, Roman; Wrzecińska, Marcjanna; Kossakowski, Kamil; Student Scientific Association of Breeders of Ruminant Animals “TAURUS” at the Department of Ruminant Science, West Pomeranian University of Technology in Szczecin, Poland; Student Students Scientific Association of Animal Geneticists, Department of Genetics and General Animal Breeding, West Pomeranian University of Technology in Szczecin, Poland; Department of Ruminant Science, West Pomeranian University of Technology in Szczecin, Poland; Department of Genetics and Animal Breeding, West Pomeranian University of Technology Szczecin, Poland; National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine; National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine; Department of Technology Processing of Livestock Products, Dnipro State Agrarian and Economic University, Dnipro, Ukraine; Department of Ruminant Science, West Pomeranian University of Technology in Szczecin, Poland; Wrocław University of Environmental and Life Sciences, Department of Environment Hygiene and Animal Welfare, Wrocław, Poland
    The aim of the research was to determine the productivity and reproduction indices of the Polish Holstein-Friesian Black-and-White variety cows in three consecutive lactations. The research was carried out in the Experimental Station of the National Research Institute Kołbacz on the Dębina farm. The herd of 1025 cows were kept in free-stall barns and fed with TMR system. The yield (kg) of milk, FCM milk, protein and fat was analyzed; content (%) of protein and fat and selected reproductive parameters such as age at the first calving, as well as inter-pregnancy periods and calving interval, pe riod service, postpartum downtime in three consecutive 305-day lactations. The studies indicated that the average yield of milk, fat and protein showed an increasing tendency in the next three lactations. The average protein and fat content were similar. The highest results of these ingredients were ob tained in cows in the second lactation. Lactation efficiency influenced the value of the analyzed fertility indices. With the increase in cows’ productivity, the calving interval and inter-pregnancy period, includ ing period service and postpartum downtime, were significantly longer. The longest calving interval and inter-pregnancy period were observed in the third lactation, and the shortest in the first lactation of cows. With the extended of the calving period, the yield of milk, protein, and fat increased. The age at the first calving was the lowest in the 2nd and the highest in the 3rd lactation. The cows calving first for the first time had the highest milk fat content and the shortest calving period. The service period was the longest in the 2nd lactation and occurred in cows with the highest fat content. Postpartum downtime in the studied herd of cows was the longest in the third lactation. The resting period was extended with the increase in the yield of: milk, FCM milk, protein and fat.
  • Miniatura
    PozycjaOpen Access
    Assessment of Breeding and Milking Performance of Polish Holstein-Friesian Black-and-White cows (HO) and Crosses with the Norwegian Red Breed (HO × NR)
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2022) Pytelwski, Jarosław; Czerniawska-Piątkowska, Ewa; Department of Animal Breeding and Product Quality Assessment, Poznań University of Life Sciences, Poznań, Poland; Department of Animal Breeding and Product Quality Assessment, Poznań University of Life Sciences, Poznań, Poland; Department of Ruminant Science, West Pomeranian University of Technology, Szczecin, Poland
    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 uniform environmental conditions. More advantageous breeding parameters and higher daily milk yields as well as lower daily contents of fat, protein, casein and dry matter and lower somatic cell counts in milk were recorded for F1 crosses (HO × NR) compared to purebred HO cows. In view of milk yield per lactation, greater contents of milk, fat and protein as well as lower concentrations of fat and dry matter in milk during the first 100 days in milk were found for crossbred primiparous cows. In turn, in the standard 305-day lactation milk coming from HO cows contained higher levels of protein and dry matter. In order to confirm the results obtained in this study it is advisable to con duct further investigations on a larger population of cows of both genotypes, including assessment of their functional and production traits over their productive lives.
  • Miniatura
    PozycjaOpen Access
    Characteristics of Reproduction Traits in Cows with Record Lifetime Milk Yields
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2022) Pytlewski, Jarosław; Antkowiak, Ireneusz R.; Czerniawska-Piątkowska, Ewa; Department of Animal Breeding and Product Quality Assessment, Poznań University of Life Sciences, Poznań, Poland; Department of Animal Breeding and Product Quality Assessment, Poznań University of Life Sciences, Poznań, Poland; Department of Ruminant Science, West Pomeranian University of Technology, Szczecin, Poland
    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- -and-White cattle. Cows with lifetime milk yields of min. 100 thousand kg milk were considered record holders. Animals were selected at random from herds covered by performance testing in the Poznań testing region in the years 2003–2016. It was shown that analysed cows with record lifetime milk yields exhibited slightly reduced fertility. The animals had the preferred mean age at first calving and adequate average length of pregnancy. Relatively high numbers of semen doses required for successful insemination resulted in an extended length of calving interval, interpregnancy period and artificial mating service.In the management of dairy cow herds focusing on high lifetime productivity and fertility traits it is recommended to control reproduction so that calvings take place in winter and cows calve for the first time at the age of maximum 27 months.
  • Miniatura
    PozycjaOpen Access
    The Effect of Selected Factors on Milking Rate in Polish Holstein-Friesian Black-And-White Cows.
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2022) Pytlewski, Jarosław; Antkowiak, Ireneusz R.; Czerniawska-Piątkowska, Ewa; Department of Animal Breeding and Product Quality Assessment, Poznań University of Life Sciences, Poznań, Poland; Department of Animal Breeding and Product Quality Assessment, Poznań University of Life Sciences, Poznań, Poland; Department of Ruminant Science, West Pomeranian University of Technology, Szczecin, Poland
    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 cows was char acterized based on the mean actual and corrected milk yield per 1 minute of milking. Statistical analy sis showed a lack of any dependence between the age group of cows and milking duration as well as mean actual and corrected milk yields in the minute of milking. Milking time decreased with progress in lactation. In terms of the mean milk yield the lowest value of this parameter was recorded for cows being in their first stage of lactation (≤ day 40). Cows with greater daily milk yields compared to those producing less milk were characterized by longer milking times and greater mean actual and corrected milk yields in the minute of milking. Milking rate of cows is a functional trait of considerable importance in the economics of raw milk production. The selection towards of an increase in milk yield, may have a positive effect on milking rate in cows.