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Wpływ przebiegu odchowu stada reprodukcyjnego kur mięsnych na wybrane wskaźniki reprodukcyjne

Domagała S., Trela M., Kędzia R., Lis M. W.

Science, Technology and Innovation

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2018

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Vol. 3, no. 2

43--47

PL

Celem pracy była analiza przebiegu wychowu stada rodzicielskiego Ross 308 w kontekście uzyskiwanych wyników wylęgowości. Badania wykonano w warunkach produkcyjnych. Przez cały okres wychowu i produkcji stada przy pomocy systemu ważenia automatycznego JOTAFAN kontrolowano masę ciała ptaków. Wskaźniki reprodukcyjne określano na podstawie wyników zapłodnienia jaj i ich wylęgowości. Stwierdzono, że masa ciała podczas wychowu i produkcji była zgodna ze standardami dla tego zestawu hodowlanego. Ponadto wysokie wartości uzyskanych wskaźników reprodukcyjnych (zapłodnienie jaj i wylęgowość z jaj zapłodnionych powyżej 90% w okresie pomiędzy 28 a 56 tygodniem życia stada) świadczy o właściwych warunkach środowiskowych i żywieniowych.

EN

The aim of study was to analyse the rearing of the Ross 308 parental stock in the context of hatching results. The study was carried out in production conditions. The body weight of birds was monitored using the JOTAFAN automatic weighing system during whole rearing and production period. Reproductive indicators were determined based on the results of eggs fertilization and hatchability. There was found that the body weight during rearing and production was in line with the standards for this breed. Moreover obtained reproductive indicators (fertilization of eggs and hatchability of fertilized eggs were higher than 90% between 28 and 56 week of parental stock life) indicate that environmental and nutritional conditions were proper.

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Analysis of fertilization process in rye (Secale cereale L. ssp. cereale) under different greenhouse conditions

Mackiewicz D., Grzelak M.

Journal of Research and Applications in Agricultural Engineering

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2015

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Vol. 60, nr 4

30--35

EN

The purpose of the work was to assess the germination process and the growth of pollen tubes in rye Secale cereale L. ssp. cereale) growing in greenhouse conditions taking into account different temperature conditions and exposures to light. The rye cultivar Dankowskie Złote, was selected for the experiment and cultivar Dankowskie Nowe as a control. Microscopic analysis were carried out using fluorescent techniques staining the preparations with aniline blue. Analysis were performed after 10 min, 1 h, 2 h and 3 h from the pollination. The results indicate a negative effect of greenhouse conditions on pollen germination, pollen tube growth and the fertilization process in rye Secale cereale (L.). The optimal greenhouse conditions for plants flowering in winter time are: exposure to the artificial lighting over plants in single day-phase 16 hours long and temperatures around 25°C for day. Temperatures lower than 20°C clearly interfere with the process of pollen grain germination, the growth of pollen tubes and the fertilization process, which in turn leads to the lower fertility and yielding of plants. In the process of producing new hybrid varieties and seed production in open-pollinated plants, plastic tunnels and greenhouses are used as isolators. In case of reproduction of the single plants or lines, selecting the optimal conditions for the fertilization process is of key importance.

PL

Celem pracy była ocena procesu kiełkowania i wzrostu łagiewek pyłkowych u żyta Secale cereale L. ssp. cereale rosnącego w warunkach szklarniowych, z uwzględnieniem różnych warunków temperaturowych i naświetlenia. Do doświadczeń wybrano odmianę uprawną żyta: Dankowskie Złote a kontrolą była odmiana Dankowskie Nowe. Przeprowadzono analizy mikroskopowe z zastosowaniem techniki fluorescencyjnej barwiąc preparaty błękitem anilinowym. Analizowano słupki utrwalone po: 10 min, 1 h, 2 h, 3 h od zapylenia. Wyniki wskazują na negatywny wpływ warunków szklarniowych na proces kiełkowania ziaren pyłku, wzrost łagiewek pyłkowych i zapłodnienie u żyta Secale cereale (L.). Optymalne warunki w szklarni dla roślin kwitnących w okresie zimy, to doświetlanie jednofazowe przez 16 godzin i temperatura ok. 25ºC w fazie dnia. Temperatury niższe od 20ºC i wyższe od 30ºC wyraźnie zakłócają proces kiełkowania ziaren pyłku, wzrost łagiewek pyłkowych i zapłodnienie, co w konsekwencji prowadzi do obniżenia płodności roślin i plonowania. W procesach wytwarzania nowych odmian heterozyjnych i produkcji nasiennej u roślin obcopylnych, stosuje się izolatory w postaci tuneli foliowych i szklarni. W przypadku rozmnażania pojedynków czy linii w procesie hodowli, dobranie optymalnych warunków do zapłodnienia to jedno z najistotniejszych zagadnień.

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The effect of Grey Heron (Ardea cinerea L.) colony on the surrounding vegetation and the biometrical features of three undergrowth species

Żółkoś K., Meissner W.

Polish Journal of Ecology

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2008

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Vol. 56, nr 1

65-74

EN

Bird breeding colonies are known to influence the habitats and phytocoenoses they occupy in different ways. Most papers concern long-lasting colonies, in which floristic composition of phytocoenoses have been already altered largely. This research was aimed to estimate the changes in the floristic composition of the forest phytocoenosis after three years of the existence of the Grey Heron (Ardea cinerea L.) breeding colony as well as to examine the influence of nutrient enrichment on the size and shape of leaves and inflorescences of three plant species Rumex acetosella L., Anthoxanthum odoratum L. and Moehringia trinervia (L.) Clairv., which have different habitat requirements. The number of vascular plant species within the colony area (0.4 ha) increased almost double and appearance of new, mostly nitrophilous, taxa like Sambucus racemosa L., Galeopsis pubescens Besser and Stellana media (L.) Vill. were observed. The vertical structure of phytocoenosis has also changed. The undergrowth appeared and dense moss layer was mostly eliminated. In case of all investigated species, the enlargement of leaf surface was found. The greatest relative increase concerned leaf width of Moehringia trinervia and Rumex acetosella - 67 and 73%, respectively. The leaf blade of Anthoxanthum odoratum increased largely in length (99%). The enlargement of the surface of assimilative apparatus was not only due to the increase of linear dimensions, but also to rounding of the leaf blade. This was not observed in case of Rumex acetosella which is characterized by elongated, lanceolate leaf blade. Differences observed among the species are probably due to differentiated leaf blade structure. Only Moehringia trinervia can be found in well-established Grey Heron colonies, while Rumex acetosella and Anthoxanthum odoratum are known to be suppressed by heavy input of nitrogen fertilizer. Thus, it seems that after few years of benefits at least Rumex acetosella and Anthoxanthum odoratum withdraw from the area altered by Grey Heron colony, because the change in root absorption and capacity in highly fertile habitat leads to toxic accumulation of nutrients.