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1

Use of phytobiotics in broiler nutrition – an alternative to infeed antibiotics?

100%

Grashorn M. A.

Journal of Animal and Feed Sciences

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2010

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tom 19

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nr 3

After the ban of antibiotic growth promoters (AGP) in the EU many alternative substances have been investigated for their potential to replace AGPs. Phytobiotics are discussed as one promissing alternative due to their high content of pharmacologically active compounds. A huge number of in vitro and in vivo studies have confirmed a wide range of activities of phytobiotics in poultry nutrition like stimulation of feed intake, antimicrobial, coccidiostatic and anthelmintic effects. The present paper gives a short review on the characteristics of phytobiotics, on the potential mode of action and on the observed effects of phytobiotics in diets on performance, carcass and meat quality and health status in broilers. Furthermore, it addresses safety concerns which may arise during application of phytobiotics.

2

Wplyw genotypu i zywienia na jakosc tuszek i miesa ciezkich indykow rzeznych

100%

Grashorn M. A.

Indyk Polski

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2003

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nr 2

23-26

3

Effects of Echinacea purpurea and Nigella sativa supplementation on broiler performance, carcass and meat quality

63%

Nasir Z., Grashorn M. A.

Journal of Animal and Feed Sciences

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2010

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tom 19

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nr 1

93-103

Present experiment was performed to study the effects of Echinacea purpurea (EP) and Nigella sativa (NS) on broiler performance, carcass and meat quality. Four treatment combinations were prepared: C - control group without any feed or water additive; E - drinking water intermittently supplemented with fermented juice of EP; N - feed supplemented with grounded seeds of NS, and EN - drinking water intermittently supplemented with EP and feed supplemented with NS. No significant treatment effect was observed on weight gain, average daily weight gain, feed conversion ratio and abdominal fat percentage. Carcass yield in C and N groups was significantly (P<0.05) higher than in E. Significantly (P<0.05) higher breast percentage in group N was observed. Crude protein contents were significantly (P<0.05) higher in meat samples of C and EN groups. Grill losses were significantly (P<0.05) lower in E and cooking losses were significantly (P<0.05) higher in N treated birds. No significant treatment effect was observed on meat colour, electrical conductivity and shear force value.

4

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Integrated assessment of quality of chicken organic eggs by measurement of dark luminescence

63%

Grashorn M. A., Egerer U.

Polish Journal of Food and Nutrition Sciences

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2007

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tom 57

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nr 4[A]

191-194

In general, consumers believe that quality of organic food is superior to conventionally produced one. For organic food an integrated assessment of quality seems to be necessary. In the early 20th century it was observed that living organisms emit light (photons). Different hypotheses were developed to describe this phenomenon. The most prominent one is that the observed biophotons are coming from an intercellular communication system. This effect is meanwhile described as dark luminescence due to the very low intensity of radiation. In first experiments with eggs it was found that eggs from hens of free range systems and from organic production showed higher maximal emissions of biophotons with a slower decline over time. The objective of the present experiment was, therefore, to run a long-term (1 year) evaluation of egg quality from different production systems (cage, barn, free range, organic) on the basis of conventional quality criteria (shell breaking strength, egg mass, albumen height, yolk colour, proportion of yolk, fatty acid profile) and emission of biophotons. First results indicate that organic eggs show higher emissions of biophotons with a slower decline, higher albumen height, paler yolk colour, and higher content of omega-3 fatty acids in yolks. Obviously, measurement of dark luminescence may be a suitable method for an integrated assessment of the quality of organic eggs.

Ograniczanie wyników

2 Journal of Animal and Feed Sciences

1 Indyk Polski

1 Polish Journal of Food and Nutrition Sciences

4 Grashorn M. A.

1 Egerer U.

1 Nasir Z.

2 2010

1 2007

1 2003

Use of phytobiotics in broiler nutrition – an alternative to infeed antibiotics?

Wplyw genotypu i zywienia na jakosc tuszek i miesa ciezkich indykow rzeznych

Effects of Echinacea purpurea and Nigella sativa supplementation on broiler performance, carcass and meat quality

Integrated assessment of quality of chicken organic eggs by measurement of dark luminescence