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Wyświetlanie 1-7 z 7
Tytuł:
Reproductive Performance of ASF-recovered Pigs in South-West Nigeria
Autorzy:
Adeoye, A. A.
Udoh, J. E.
Ikeobi, C. O. N.
Adebambo, O. A.
Rotimi, E. A.
Powiązania:
https://bibliotekanauki.pl/articles/1182907.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ASF; Litter traits and Pigs
Opis:
This study was carried out to investigate litter traits performance of ASF-recovered pigs at Teaching and Research Farm of Federal University of Agriculture, Abeokuta. Data were collected on 52 progenies farrowed by eight (8) sows and two (2) boars, comprising of four (4) Large White sows, two (2) Large Black sows, two (2) Duroc sows, one (1) Large White boar and one (1) NigerHyb boar. These are survivals from ASF outbreak in 2005. Data were collected on the litter traits and subjected to General Linear Model (GLM) procedure using SAS, (1999) statistical package. Results obtained revealed that the litter traits estimates for the cross among the Large White were 6.52±0.26 (litter size at birth), 5.72±0.23 (litter size at weaning), 6.92±0.34 kg (litter weight at birth), 1.05±0.01 kg (average pig weight at birth), 7.08±0.35 (average pig weight at weaning), 12% (pre-weaning mortality) and sex ratio at birth (52%) and at weaning (54%). In the crosses between Duroc and NigerHyb, and Large Black and NigerHyb, effect of dam genotype was significant (P<0.01) on litter weight at birth and weaning, litter size at weaning and average pig weight at birth, higher values were observed in the cross between Large Black and NigerHyb, but not significant on litter size at birth and average pig weight at weaning. The litter traits estimates observed in this study are similar to those reported before the outbreak of ASF in 1997 in Nigeria.
Źródło:
World Scientific News; 2016, 53, 3; 417-429
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water Resources Uncertainty in Yewa River Basin, Ogun state, South-West Nigeria
Autorzy:
Adeaga, O. A.
Bello, A. A.
Akinbaloye, T.
Powiązania:
https://bibliotekanauki.pl/articles/1066168.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Climatic variability
Drainage basin
Uncertainty
WEAP
Water resources
Yewa River
Opis:
The paper examined water resources insecurity arising from climatic change and variability, coupled with increased population and economic development in in Yewa basin, with a view to understanding the relationship between climatic variables and hydrological parameters operating within the basin. Thus, the study entails assessment of the effects of climate change and variability on water resources and its implication on both the physical environment and the hydrological regime, using the water evaluation and planning (WEAP) system model. Data employed included water supply and demand for Domestic, Commercial, Industrial and Agriculture, as well as climatic data (rainfall and Temperature) and runoff. As revealed by the Scenario fabrication, 45.24% of the annual water requirement within Yewa Basin is not met, with water potentials of Annual mean discharge of 3682.46 m3/s (±830.1) and Annual mean rainfall of 1106.26m (±475.25), and with coefficients of variation of 40.88 and 73.73, respectively. This deficit calls for an appropriate water resources management mechanism to be put into use in Yewa Basin.
Źródło:
World Scientific News; 2019, 131; 37-53
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rainfall Variability of South-West Monsoon: A Special Study Based on Ratnapura District, Sri Lanka
Autorzy:
Kaleel, M. I. M.
Powiązania:
https://bibliotekanauki.pl/articles/1112561.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Climate change
Meteorological Department
Moving average
Rainfall variability
Ratnapura District
Sri Lanka
Opis:
This study was conducted using secondary data from the Meteorological Department obtained from five stations in Ratnapura District: Ratnapura, Eheliyagoda, Balangoda, Lellopitiya and Embilipitiya. The objective of the study was ‘to identify rainfall trend and variability analysis in the study area and to find the impact of climate changes on rainfall variability in the study area’. The average rainfall in the selected stations are: in Embilipitiya - between 112 mm to 170 mm, in Balangoda - from 170 mm to 230 mm, Lellopitiya – from 230 mm - 290 mm and both Ratnapura and Eheliyagoda - 290 mm to 360 mm. To identify the rainfall variability, the moving average technique was employed, using 7 years of data. According to the result of this study, climate change has impact on rainfall variability in the Ratnapura District.
Źródło:
World News of Natural Sciences; 2018, 18, 2; 195-202
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Araneidae: A Remarkable Orb-weaving Group in the Rice Land Ecosystem of South 24 - Parganas, West Bengal, India
Autorzy:
Basu, Debarshi
Raychaudhuri, Dinendra
Powiązania:
https://bibliotekanauki.pl/articles/1193622.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Araneidae
Neoscona theisi
Orb-weavers
Rice Land
South 24 Parganas
West Bengal
Opis:
As a potential predator the importance of spiders, especially dwelling in rice land, needs to be properly addressed. Till date the information gathered in this field isinsufficient. Due to various reasons, members of the family Araneidae Clerck, 1757, exhibit striking variability particularly in Gangetic delta. After sampling for two years, it is found that, Neoscona theisi (Walckenaer, 1841) is the most dominant group in the fields of South 24 Parganas, West Bengal, India, amongst araneids and their average sex ratio increases during kharif session due to multiple environmental factors including reproductive strategies.
Źródło:
World Scientific News; 2017, 71; 118-126
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Rice Land inhabiting Long Jawed Orb Weavers, Tetragnatha Latreille, 1804 (Tetragnathidae: Araneae) of South 24-Parganas, West Bengal, India
Autorzy:
Basu, Debarshi
Raychaudhuri, Dinendra
Powiązania:
https://bibliotekanauki.pl/articles/1192604.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Spiders
Orb-weavers
Tetragnatha
South 24 Parganas
India
Opis:
Spiders inhabiting rice land ecosystem demand serious consideration primarily due their predatory efficiency. In India, their role as a potential bio-control agent is yet to be evaluated. The coastal ecosystem in the Gangetic Delta at the southern part of West Bengal, India, exhibits a wide variety of predatory spider population because of climatic fluctuation, soil quality and several other factors. Orb-weaving spiders appear to be of special importance as they trap more than what they actually consume. The present study is aimed at unfolding the taxonomic diversity of Tetragnatha Latreille, 1804 (family Tetragnathidae, Menge, 1866) which is probably the mostly predominant group amongst orb-weavers found in rice fields of South 24 Parganas, West Bengal, India. Of the seven tetragnathid species recorded from the study area, three, T. chauliodus (Thorell), T. boydi O. P. - Cambridge, and T. josephi Okuma are found to be new from the country. The referred species are therefore described and illustrated. Further a key to the species occurring in the area has also been provided.
Źródło:
World Scientific News; 2016, 55; 210-239
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessing Diversity and Abundance of Soil Microarthropods in Three Discrete Plots of Ramakrishna Mission Vivekananda Ashrama, Narendrapur, South 24 Parganas, West Bengal, India
Autorzy:
Saha, Sumana
Sarkar, Mithun
Raychaudhuri, Dinendra
Powiązania:
https://bibliotekanauki.pl/articles/1031552.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Biodiversity
Narendrapur
RKM Ashrama Campus
Soil Microarthropods
South 24 Parganas
Opis:
This paper is a study of diversity and seasonal abundance of soil inhabiting arthropod fauna and their interrelationships with the edaphic factors like temperature, moisture and pH in flower garden, vegetable garden and uncultivated area dominated by weeds in Ramakrishna Mission Ashrama Campus, Narendrapur, South - 24 Parganas, West Bengal. The soil arthropods were collected with the help of Berlese-Tullgren funnels. Altogether, 591 arthropods belonging to 7 different groups viz., Acarina, Arachnida, Collembola, Coleoptera, Diptera, Hymenoptera and Psocoptera were extracted from each of the three plots every month during the entire survey period (August 2018 – July 2019). Microarthropod abundance was found to be greater in uncultivated areas (266 individuals) as compared to that of the flower and vegetable gardens where different agronomic practices are adopted and traditional means of garden nurturing viz. tilling, raking, weeding, etc. are followed. Of the total population in all three plots, mites were the most dominant group (37.06%), followed by ants (25.21%) & springtail (19.29%) populations. Soil arthropods populations are greater in the monsoon season (227 individuals), followed by premonsoon (188 individuals) & postmonsoon (176 individuals).
Źródło:
World News of Natural Sciences; 2020, 31; 58-69
2543-5426
Pojawia się w:
World News of Natural Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diversity Spectrum of Spider Fauna in Backyard Rice Agroecosystem, Narendrapur, West Bengal, India
Autorzy:
Saha, Sumana
Bhadra, Ampita
Raychaudhuri, Dinendra
Powiązania:
https://bibliotekanauki.pl/articles/1031819.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Diversity spectrum
West Bengal
parganas
rice agroecosystem
south 24
spider
Opis:
A survey of spiders associated with the rice agroecosystem in Ramakrishna Mission Ashrama Campus, Narendrapur, South 24, Parganas, India results a total of 17 species under 16 genera distributed over 7 spider families in kharif crop season during August 2019 – November 2019. Of these, two species Rhene decorata Tikader and Thomisus sikkimensis Tikader are recognised as endemic to India. Runcinia insecta (L. Koch) is recorded for the first time from West Bengal and Camaricus formosus Thorell, Cyclosa spirifera Simon and Neoscona theisi (Walckenaer) recorded first time from rice field of West Bengal. Total number of spiders per sample is maximum in the maturity stage of paddy when pests attain their peak. Spiders are collected from diverse habitats within the paddy field, viz. crop canopy, border weeds and in the flood water. Among spiders family Salticidae is the most dominant group. Analysis of their zoogeographical distribution reveals that the fauna apart from being Oriental also includes some Ethiopian (17.65%), Australian, Neotropical and Palaearctic (each 11.76%) and Nearctic (5.88%) elements. The dominant guild is constituted by the Ambushers (7.44%) followed by Ground Runners (6.37%) and Orb Web Weavers (3.19%). Ranking sequence of most abundant four species are [in descending order]: Oxyopes shweta (Tikader) (34.72%) > Plexippus paykullii (Audouin) (13.89%) > Camaricus formosus (Thorell) (12.50%) > Rhene decorata Tikader (9.72%). Sex ratio (♀ : ♂) is around 11 : 1. Availability of food/season and/or cannibalism may be the factors for female dominated society. This work aims to generate data-base on the diversity spectrum of spiders in the rice agroecosystem along the growth period of the rice plants and to propose definite management plan for limiting pesticidal load.
Źródło:
World Scientific News; 2020, 147; 61-75
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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