Raziskan je bil vpliv okoljskega sončnega sevanja z in brez UV-B dela spektra ter foliarnega gnojenja z raztopino selenata na pridelek bučnic buče golice (Cucurbita pepo L.) Pridelek semen na enoto ...površine je bil večji, ko je bil s filtriranjem UV-B sevanja odstranjen vpliv tega dela spektra na rastline, v primerjavi z vplivi celotnega sončnega spektra. Na osnovi rezultatov se ugotavlja, da je manjši pridelek v razmerah celotnega sončnega spektra odvisen od antioksidativnih poškodb, ki jih povzroča UV-B sevanje, saj je foliarno tretiranje z raztopino selenata zmanjšalo negativen vpliv tega sevanja.
The objective of the present study was to determine the effect of linseed oil supplementation on performance, fatty acid composition and oxidative status of rabbits. Twelve male SIKA rabbits were ...divided into two groups. The control group (n = 4) received commercial diet and the linseed group (n = 8) received commercial diet containing 9% of linseed oil, which was sprayed onto the pellet. R abbits were slaughtered at 115 days of age, 52 days after the start of the experiment. Live weight, weight gain, feed intake and feed efficiency were recorded. The fatty acid composition of muscle, adipose tissue and liver was determined by the in situ transesterification method and gas chromatography-flame ionisation detection (GC-FID). In order to evaluate the oxidative status of rabbits, the malondialdehyde (MDA) concentration in plasma, liver and muscle were measured. The results show that it is possible to enhance proportion of n-3 polyunsaturated fatty acids (PUFA) in rabbit's muscle, adipose tissue and liver by adding linseed oil in the diet without detrimental effect on productive performance. Linseed oil addition improved fatty acid composition in all tissues by increased PUF A proportion and decreased proportion of saturated and monounsaturated fatty acid. Linseed oil also reduced n-6/n-3 PUF A ratio in all tissues. However, linseed oil addition led to significantly higher MD A concentrations in plasma, liver and muscle. Since PUF A are highly susceptible to oxidation, further research is needed to focus on protecting animal and their products from lipid oxidation by adding various natural antioxidants to the diet.
V poskusu smo preučevali vpliv dodatka lanenega olja v krmo na proizvodne lastnosti, maščobnokislinsko sestavo in oksidacijski status kuncev. D vanajst kuncev slovenske mesne linije SIKA smo razdelili v dve skupini. Kontrolna skupina (n = 4) je uživala standardno krmo, poskusna skupina (n = 8) pa standardno krmo z dodatkom 9 % lanenega olja, ki smo ga nanesli na pelete. Kunce smo zaklali pri starosti 115 dni, 52 dni po začetku poskusa. V času poskusa smo zapisovali maso živali, prirast, zauživanje in izkoristek krme. M aščobnokislinsko sestavo mišic, maščobnega tkiva in jeter smo določili z in situ transesterifikacijo in kapilarno plinsko kromatografijo. Za določitev oksidacijskega statusa kuncev smo izmerili koncentracijo malondialdehida (MDA) v plazmi, jetrih in mišici. R ezultati so pokazali, da lahko z dodatkom lanenega olja v krmo kuncev povečamo delež n-3 večkrat nenasičenih maščobnih kislin (VNMK) v mišici, maščobnem tkivu in jetrih brez negativnih učinkov na proizvodne lastnosti. D odatek lanenega olja je izboljšal maščobnokislinsko sestavo s povečanjem deleža VNMK in zmanjšanjem deleža nasičenih in enkrat nenasičenih maščobnih kislin, kar je znižalo tudi razmerje n-6/n-3 VNM K v vseh tkivih. D odatek lanenega olja je značilno povečal koncentracijo MD A v plazmi, jetrih in mišici. Ker so VNM K zelo podvržene oksidaciji, so potrebne nadaljnje raziskave, v katerih se bo potrebno osredotočiti na zaščito živali in njihovih produktov pred lipidno oksidacijo z dodajanjem različnih naravnih antioksidantov v krmo.
-- Leading oil consultant offers a damning critique of US policy -- Oil is the lifeblood of modern economics. It is the precious resource at the heart of empire-building -- from the British empire to ...the American empire today. It underpins the world's financial markets. But seventy per cent of the world's oil supplies lie under the sands of the Middle East. Did the US invade Iraq to grab Iraq's oil? Many people think so. This book shows how this is part of a wider US attempt to dominate international oil and maintain America's global dominance. Written by an influential oil consultant, with experience of working in both the US and Arab oil industries, this book provides a rare insight into the real motivations behind US intervention in the Arab world, and the relationship between the US and the Arab states. Zalloum provides a historical account of the roots of today's involvement, analysing US intervention in the Arab World since the 19th century. Zalloum provides an account of America's changing role in OPEC. He examines the fate of Iraq's oil and the involvement of US contractors. He also analyses the role of oil in America's relationship with Israel, providing an important insight into how this dynamic is viewed in the Arab world. The book offers a unique perspective on how the US is viewed in the Arab region and how progress should be made if real peace and stability are to be brokered.
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