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    Tytuł:
    The presence of anti-Hypoderma antibodies in udder milk samples, and correlation with selected parameters of dairy performance
    Autorzy:
    Bednarko-Mlynarczyk, E.
    Szteyn, J.
    Bialobrzewski, I.
    Wiszniewska-Laszczych, A.
    Liedtke, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/30409.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Hypoderma
    antibody
    udder
    milk sample
    correlation
    milk parameter
    dairy performance
    ELISA test
    hypodermosis
    dairy cow
    cow
    milk yield
    milk protein
    animal disease
    parasitic disease
    Opis:
    Hypodermosis is responsible for significant economic losses and remains a current problem in animal husbandry. This study determined the extent of Hypoderma spp. invasion in north-eastern Poland in dairy herds. The extent of the invasion, determined on the basis of positive results of an ELISA assay (Bovine Hypodermosis Milk Screening of Institut Pourquier), varied in herds. Statistical analysis performed on the results of milk productivity and content of basic components revealed a decrease in the milk yield and changes in milk protein in animals revealing positive, doubtful and negative results. Statistically significant differences were absent as regards the content of milk fat or milk total solids. The milk yield and the content of particular milk components were determined using the AT4 method, as part of a control program carried out by the Polish Federation of Cattle Breeders and Dairy Farmers (PFHBiPM).
    Źródło:
    Polish Journal of Veterinary Sciences; 2012, 15, 3
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diversifying Rural Livestock Production by the Introduction of Holstein Friesian on Zero Grazing for Rural Dairy Production, Employment, Poverty Alleviation and Food Security in the Tropics
    Autorzy:
    Gwaza, D. S.
    Okwori, A. I.
    Fombah, E. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1191355.pdf
    Data publikacji:
    2016
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Adaptation
    Holstein Friesian
    calf-mortality
    disease-prevalence
    food security
    performance
    rural dairy production
    selection
    zero grazing
    Opis:
    The review was conducted from studies/reports of the performance of Holstein Friesian routinely kept by Heifer Project International (HPI) Farmer groups on imported Holstein Friesian herds on zero grazing in the western highland region of Cameroon. The review provides insight to the reports of the studied area, its climatic conditions, management of the animals and the methodology adopted by the researchers. Their findings and recommendations were also highlighted in order to inform policy makers and agencies with the responsibility to design programmes for rural development and youth empowment in tropical countries, the potentials of this technology to alleviate poverty, hunger, rural-urban migration and unemployment. The mean age at first calving was higher compared to other reports. The additive genetic variance of the sire that sired the dam of the heifer, the breeding techniques of maintaining a central bull for several farmers and other management techniques employed elongated age at first calving. Calving interval and calf birth weight were appreciable, though longer and lower respectively compared to existing reports. They were greatly affected by the management techniques employed by the farmers. The mean gestation length was low despite the poor management indicating that, this breed with improved management can be integrated into the tropical conditions. The percentage calf mortalities were very high. It varied across herd, indicating that there was no standard routine management practice adopted at the herds locations. The herd with better management recorded lower calf mortality. The effect of calf mortality rate on calf crop and selection for genetic improvement were worse and also varied across herds. In some herds, all the heifers produced must be retained to maintain herd size. In other herds the cow must calve many times before it is able to produce a heifer, that would replace it and lactate in the herd. The higher the number of calving that produced a lactating heifer, the longer the generation interval, and the lower the genetic progress achieved through selection when generation intervals are elongated. The genotypic diversity created through independent assortment, segregation and recombination of genes as random effects through gametogenesis and fertilization, respectively were lost to calf mortality and never presented to the environmental challenges of the tropics for selection and adaptation. Superior genotypes that could have tolerated the tropical condition were never exposed to build physiological mechanism that would help them cope with tropical stress. The few genotypes that survived, were introduced into the stressful conditions of the tropics often too early and sudden with no time to allow them develop and build their survival techniques to enhance their adaptation in the tropics. There were high incidences of disease prevalence which also varied across herds, locations, type of bedding materials used and floor type in the housing. There was no housing design directed towards herd health as participating farmers erect structures they can afford. This was why calf mortality rate were very high. The calves are being introduced into an already diseased hazard environment without adequate time to develop their own defence mechanisms. The survival of some calves, reproductive performance of the herd and their lactation thus indicate that, this breed can be integrated into the tropical conditions. There is however, need for interested countries and agencies to design a low cost housing type and insist that, their potential beneficiaries must provide this housing and adequate feed from the zero grazing plots first before they acquire their animals. Mud floor must be replaced with laterite floor for easy drainage of urine and water. This will improve herd health, introduce calves into the challenging tropical stress gradually and allow them enough time to build their body defence against prevalent diseases. There is also the need to reduce the number of farmers attached to a central bull, to ensure that all heifers attached to a bull have successful services.
    Źródło:
    World Scientific News; 2016, 34; 1-33
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie dwóch poziomów intensywności użytkowania mlecznego krów
    Comparison of two milking performance intensity levels of the dairy cows
    Autorzy:
    Jugowar, J. L.
    Winnicki, S.
    Dolska, M.
    Doga, M.
    Głowicka-Wołoszyn, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/238879.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    krowa
    intensywność produkcji
    długość użytkowania
    wydajność życiowa
    dairy cow
    milk performance level
    productive usage
    lifetime milk yield
    lifespan of cows
    Opis:
    Celem pracy było określenie wpływu użytkowania mlecznego na rozród krów, długość ich życia i użytkowania. Porównano dwa stada o podobnej wielkości, utrzymywane w takiej samej technologii chowu, ale o różnym poziomie wydajności mleka. Średnia wydajność mleka w okresie 305-dniowej laktacji w jednej oborze wynosiła 7641 kg, a w oborze o wyższej intensywności produkcji 8657 kg. Wykazano, że intensywne użytkowanie krów wpłynęło na wydłużenie laktacji, a w konsekwencji spowodowało wydłużenie okresu międzywycieleniowego. Nie wpłynęło natomiast na poziom wydajności życiowej i długość użytkowania krów.
    The aim of studies was to evaluate the effect of milk yield level on reproduction of dairy cows, their lifespan and production lifetime. The investigations compared two dairy herds of similar size, under the same housing conditions, but characterized by different milk production levels. The average milk yield over 305-day lactation achieved 7641 kg in lower yielding herd, and 8657 kg in the higher yielding herd. It was stated that the intensive milking performance tended to prolong the lactation but also to lengthen the inter-calving periods. However, the milking performance did not affect the lifetime milk yield level, nor the productive lifespan of cows.
    Źródło:
    Problemy Inżynierii Rolniczej; 2008, R. 16, nr 2, 2; 123-128
    1231-0093
    Pojawia się w:
    Problemy Inżynierii Rolniczej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of inter-calving interval duration on cow productivity in two consecutive lactations
    Wplyw dlugosci okresu miedzywycieleniowego na produkcyjnosc krow w dwoch kolejnych laktacjach
    Autorzy:
    Micinski, J
    Pogorzelska, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/44674.pdf
    Data publikacji:
    2008
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    private farm
    farm
    Warmia-Mazury region
    dairy cow
    cow
    lactation
    inter-calving interval
    interaction
    milk performance
    simple correlation
    value-corrected milk yield
    breeding programme
    Źródło:
    Acta Scientiarum Polonorum. Zootechnica; 2008, 07, 2; 11-22
    1644-0714
    Pojawia się w:
    Acta Scientiarum Polonorum. Zootechnica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling the distribution performance in dairy industry: a predictive analysis
    Autorzy:
    Mor, Rahul S.
    Bhardwaj, Arvind
    Singh, Sarbjit
    Khan, Syed Abdul Rehman
    Powiązania:
    https://bibliotekanauki.pl/articles/1835473.pdf
    Data publikacji:
    2021
    Wydawca:
    Wyższa Szkoła Logistyki
    Tematy:
    distribution performance
    food supply chain
    dairy industry
    structural equation modelling
    SEM
    predictive analysis
    wydajność dystrybucji
    łańcuch dostaw żywności
    przemysł mleczarski
    modelowanie równań strukturalnych
    analiza predykcyjna
    Opis:
    Predictive analysis is a vital element to operations management as it facilitates real-time decision making and advanced planning on both strategy and performance. This paper identifies predictors to measure distribution performance in the dairy industry and to establish their importance. Methods: A distribution model is developed through exploratory structural equation modelling (SEM) techniques. The key performance predictors are marketing and distribution management, quality management, supply chain coordination, and brand management, which account for 71.5% of the variability in distribution performance. Results and conclusion: The predictors help improving the distribution performance, specifically in quality, order fill rate, and food safety. The outcomes of this research can help dairy professionals in managing their distribution channels, improving traceability, on-time delivery, and shipment accuracy. Consequently, these factors can improve distribution performance. Four predictors are elicited from the data to estimate the distribution performance and the relative importance of predictors is also established.
    Źródło:
    LogForum; 2021, 17, 3; 425-440
    1734-459X
    Pojawia się w:
    LogForum
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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