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    Wyświetlanie 1-3 z 3
    Tytuł:
    Proposal for a seed certification scheme
    Autorzy:
    Behm, A.
    Konnert, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/41261.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    representative sample
    seed quality
    certification scheme
    isoenzyme
    plant quality
    seed
    Opis:
    Identity of reproductive material is essential in artificial forest regeneration. Legal regulations cannot guarantee proof of identity. State and private organizations have been cooperating to develop a seed certification scheme in forestry. Representative samples of forest reproductive material are taken at any production stage starting at the time of seed collection through to plant delivery as well as at time of changing ownership.The first sample at the time of seed harvest is used to determine the maximum potential yield of living germinants from the total collection. Furhtermore this and the other samples are tested randomly at a determined level of intensity or in case of doubt by Isozyme/DNA methods. Sampling techniques have been tested and described in a handbook. The biochemical-genetic tests are being standardized for all major commercial species. Forest reproductive material having been sampled in the described way will be certified "of provable identity" by a neutral agency. The Scheme will be open to anyone complying with the rules laid down. Larger forest owners have confirmed to preferably purchase "forest plants of provable identity".
    Źródło:
    Dendrobiology; 2002, 47 Supplement
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A tool to measure maturity of an employee suggestion scheme
    Autorzy:
    Lasrado, F.
    Gomišček, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/407046.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    quality management
    measurement
    model
    system
    Employee Suggestion Scheme
    innovation
    Opis:
    Employee Suggestion Schemes have been used in organizations for a long time due to the fact that they enable fostering of creative ability of employees. However, they must be used effectively and in a sustainable manner to better the creativity and innovation capacity of organizations in order to improve competitive advantage. Therefore there is a need to understand the maturity of Employee Suggestion Schemes. This paper proposes a new, structured evaluation tool for assessing an organizational Employee Suggestion Scheme maturity. It suggests five building blocks: Leadership and Work Environment, System Capability, System Effectiveness, Organizational Encouragement and System Barriers, each of them characterized by several relevant indicators and an assessment/grading scale in order for an organization to be able to determine the maturity level of their Employee Suggestion Scheme as: Initial stage, Development stage or Advanced stage. Organizations should apply this tool to assess the maturity level of their Employee Suggestion Scheme and draw a roadmap for its improvements.
    Źródło:
    Management and Production Engineering Review; 2015, 6, 2; 4-13
    2080-8208
    2082-1344
    Pojawia się w:
    Management and Production Engineering Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of breed, parity and frequency of collection on quality and quantity of OPU derived oocytes
    Autorzy:
    Ali, Sayid
    Lemma, Alemayehu
    Degefa, Tamrat
    Jemal, Jeilu
    Powiązania:
    https://bibliotekanauki.pl/articles/1031285.pdf
    Data publikacji:
    2021
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Bos taurus
    Breed
    Crossbreeding Holstein-Friesian
    Ethiopian Boran
    OPU scheme
    Oocyte numbers
    Oocyte quality
    Ovum Pick
    Parity
    Opis:
    The aims of this study was to see the effect of breed, parity and scheme of collection on the quality and quantity of OPU derived oocytes and effect of transvaginal ultrasound guided follicular aspiration on subsequent fertility of donor cows. A total of 28 animals (11 Boran and 11 Boran Holstein-Friesian cross for once per week collection, and 7 Boran and 7 Boran Holstein-Friesian cross for twice per week collection) were used in this experiment. A total of 22 animals were evaluated for the effect of the OPU procedure on subsequent reproductive function. In 150 Ovum Pick up sessions, irrespective of collection scheme, breed and parity, 1124 follicle (554 in Boran and 570 in HF crosses) were punctured with a recovery rate of 51.1% in Boran and 48.6% in the crosses. Relatively more follicles were aspirated in crosses compared to Borans although the difference in oocyte recovery rate and quality were not statistically significant. Overall recovery rate was 57.7% in heifers and 42% in cows. Frequency of aspiration significantly influenced (P<0.05) oocyte recovery rate with more follicles aspirated in Once per week per session compared to twice per week per session but there was no difference in the mean number of recovered oocytes. A significantly higher number of follicles were aspirated (P<0.05) and good quality oocytes were greater in heifers than cows. Different COCs quality grades were recovered from breed, parity and frequency of collection category. Overall from a total of 574 collected COCs, about 326 (57%) of the recovered COCs were of the quality grades I and II, whereas 248 (43%) were with quality grades III and IV. All 22 animals showed estrus on average after 19 days of the last OPU procedure though a relatively weaker intensity of estrus signs, irregularity of the cycle and minor ovarian morphological change were noted. Response rate to a single PGF2α treatment on 18 animals was 72% (13/18). Subsequent insemination of those in estrus resulted in 53.8% (7/13) first service conception rate. In conclusion, parity, and to some extent frequency of collection had a significant effect on the quality and quantity of oocyte but not breed. Animals at post OPU were able to continue cycling and become pregnant.
    Źródło:
    World News of Natural Sciences; 2021, 34; 88-97
    2543-5426
    Pojawia się w:
    World News of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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