Wyniki wyszukiwania

1

Changes in phytic acid, phytase activity and inorganic phosphorus during maturation of triticale varieties resistant and susceptible to pre-harvest sprouting

100%

Niziolek S.

Acta Physiologiae Plantarum

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1995

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tom 17

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nr 3

2

Study on stability of fungal phytase as poultry feed additive

86%

Karaman M., Gurbuz Y., Ozkose E., Ekinci M. S.

Journal of Animal and Feed Sciences

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2004

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tom 13

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nr 2

313-321

3

Appearance of different phosphatase forms and phosphorus partitioning in nodules of chickpea [Cicer arietinum L.] during development

86%

Gupta A. K., Kaur V., Kaur N.

Acta Physiologiae Plantarum

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1998

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tom 20

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nr 4

Acid and alkaline phosphatase and phytase activities were determined in the bacteroid free fractions of chickpea (Cicer arietinum L.) nodules at 15 days intervals, from 40 days after sowing (DAS) to 85 DAS. In general, the activities and specific activity of both the acid and alkaline phosphatases declined at 55 DAS. Out of the various substrates studied, ATP was the best substrate for both phosphatases. Activities of phosphatases with glucose-6-phosphate and fructose-6-phosphate were low in comparison to these with fructose 1,6 bisphosphate. The efficiency of acid phosphatase for utilizing fructose 1,6 bis phosphate as a substrate increased with nodule development. A fructose 1,6 bis phosphate specific acid phosphatase with elution volume to void volume (Ve/Vo) ratio of around 2.0 was observed in mature nodules (80 DAS). Acid phosphatase at 40 DAS was resolved into two peaks which were eluted at Ve/Vo of about 1.5 and 1.8. However, at 60 DAS the peak with Ve/Vo of 1.5 could not be detected. With ATP as substrate, a high (Ve/Vo of 1.2) and low MM form (Ve/Vo of 2.1) alkaline phosphatases were observed at 40 DAS however at 60 DAS stage only one peak with Ve/Vo of 1.7 was detected. Although, a low activity of acid phytase was observed in nodules at all stages of development but neither alkaline phytase nor phytic acid could be detected. It appears that the nodules acquire inorganic phosphate from the roots. The higher content of water soluble organic phosphorus in mature nodules could be due to the low activities of phosphatases at maturity.

4

The effects of dietary phytase and 1,25[OH]2D3 on growth and strength of bones in broiler chickens at day 21 of life

86%

Puzio I., Bienko M., Radzki R. P.

Journal of Animal and Feed Sciences. Supplement

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2001

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tom 10

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nr 2

5

Effect of fertilization and variety on digestibility of phosphorus from plant feedstuffs in pigs

86%

Hovenjurgen M., Rodehutscord M., Pfeffer E.

Journal of Animal and Feed Sciences

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2003

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tom 12

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nr 1

6

Some physicochemical bone parameters of sows fed microbial phytase-supplemented diet

72%

Czech A., Grela E. R.

Polish Journal of Veterinary Sciences

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2009

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tom 12

|

nr 4

The aim of the present study was to determine the effect of microbial phytase addition to sow diets on a mineral content, mineralization level and geometric parameters of femoral and humeral bone. The studies were done on 75 sows assigned to 3 feeding groups. The animals from group I (positive control) were fed a diet of standard calcium and phosphorus dietary contents which complied with the requirements of the Polish Norms for Pig Nutrition (1993). The sows from group II (negative control) received a diet without an inorganic phosphorus content and finally, group III was provided with a diet without an inorganic phosphorus additive, but supplemented with microbial phytase (500 PU kg-1) and formic acid. After lactation completion and piglet weaning, 4 sows were selected from each group for slaughter and laboratory evaluation of femoral and humeral bone samples. The bone samples were examined for a content of dry matter, crude ash and minerals (phosphorus, Ca⁺², Mg⁺², Mn⁺², Zn⁺², Cu⁺²). The isolated femurs were analyzed for a mineralization degree and geometric parameters. A combined microbial phytase with formic acid supplementation significantly increased manganese and zinc concentration in femoral bone and a level of phosphorus, calcium, zinc and iron in humeral bone of sows. There was also observed significantly higher trabecular bone mineral density (Td) in the femoral bone as well as the bone volume. The evaluation of geometric parameters and bone cortical indices showed a significant influence of the sow feedstuff supplementation with microbial phytase and formic acid on the parameters studied.

7

Effects of phytase on growth performance and digestibility of phosphorus in maize-soyabean meal based diets for young pigs

72%

Yang Q. M., Baidoo S. K.

Journal of Animal and Feed Sciences

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2005

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tom 14

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nr 2

8

Phosphatase activity and phosphorus partitioning in nodules of developing mungbean

72%

Kaur V., Kaur N., Gupta A. K.

Acta Physiologiae Plantarum

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1999

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tom 21

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nr 3

9

Influence of dietary phytase and 1,25-dihydroxycholecalciferol supplementation on the activity of digestive enzymes in chickens

72%

Kapica M., Puzio I.

Bulletin of the Veterinary Institute in Puławy

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2004

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tom 48

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nr 4

10

Change of the apparent digestibility of nutrients and phosphorus as a function of phosphorus source and phytase supplementation in pigs

72%

Gundel J., Mocsenyi A. R., Herman A., Febel H., Huszar S., Szelenyi M., Szabo A.

Journal of Animal and Feed Sciences

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2004

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tom 13

|

nr 1

11

Tannins reduce protein but not phosphorus utilization of diet with added phytase in pigs

72%

Salobir J., Kostanjevec B., Struklec M., Salobir K.

Journal of Animal and Feed Sciences

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2005

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tom 14

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nr 2

12

The bioavailability of zinc from inorganic and organic sources in broiler chickens as affected by addition of phytase

72%

Swiatkiewicz S., Koreleski J., Zhong D. Q.

Journal of Animal and Feed Sciences

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2001

|

tom 10

|

nr 2

13

Some hydrolases and their substrates occuring in initial period of germination in Triticale grains of various pre-harvest sprouting resistance

72%

Niziolek S., Bartoszewicz K., Kaczkowski J.

Acta Physiologiae Plantarum

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1994

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tom 16

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nr 3

14

Effects of dietary phytase supplementation on growth and development of limb bones in broiler chickens

72%

Puzio I., Pisarski R. K., Studzinski T.

Annales Universitatis Mariae Curie-Skłodowska. Sectio EE: Zootechnica

|

2000

|

tom 18

15

Biosynteza fitaz, fosfataz oraz celulaz i ksylanaz w hodowlach grzybów strzępkowych w podłożu stałym

58%

Rywinska A., Witkowska D., Piegza M., Jarosz M., Salamon J.

Acta Scientiarum Polonorum. Biotechnologia

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2007

|

tom 06

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nr 2

16

Efficacy of different levels of Escherichia coli phytase in hens fed maize-soyabean meal based diets with a decreased non-phytase phosphorus content

58%

Kozlowski K., Jeroch H.

Journal of Animal and Feed Sciences

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2011

|

tom 20

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nr 2

The aim of this experiment was to determine the efficacy of different inclusion levels of new type phytase (ECP) synthesized by Escherichia coli and expressed in Pichia pastoris yeast (Optiphos) in maize-soyabean meal based diets on egg quality and the laying performance of laying hens aged from 20 to 44 weeks. Two hundred and twenty Lohmann Brown hens were randomly assigned to five treatments with 44 replicates each, and were kept individually in cages. The control diet (C) contained 2.5 g non-phytate phosphorus (NPP) and 35.5 g Ca/kg feed, and the experimental diets contained 1.3 g NPP and 33.0 g Ca/kg feed. The deficient diet (D) was offered without any addition of phytase, while the other treatments involved different levels of this enzyme: 125, 250 and 500 FTU/kg feed (treatments ECP125, ECP250 and ECP500, respectively). Compared with the deficient diet, phytase supplementation significantly affected the performance of hens over the entire experimental period (number of eggs laid, egg mass and FCR), and egg quality parameters: egg yolk colour (significantly in week 24 of the laying period) and shell thickness (significantly in week 12 of the laying period). The results of the present study indicate that the supplementation of diets for laying hens with ECP improved performance parameters. The NPP content of layer diets based on maize meal and soyabean meal can be reduced by 1.2 g/kg provided that the diets are supplemented with ECP at 125-250 FTU per kg diet.

17

Efficacy of different levels of Escherichia coli phytase in broiler diets with a reduced P content

58%

Kozlowski K., Jankowski J., Jeroch H.

Polish Journal of Veterinary Sciences

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2010

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tom 13

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nr 3

18

Efficacy of different phytase preparations in broiler rations

58%

Kozlowski K., Jankowski J., Jeroch H.

Polish Journal of Veterinary Sciences

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2009

|

tom 12

|

nr 3

Three phytase preparations were added to broiler rations with considerably reduced levels of phosphorus. Birds were allocated to a positive control group (I), a negative control group (II) and three phytase-supplemented groups (III – Aspergillus niger phytase, IV – Penicillium canescens phytase, V – Pichia phytase). Major components of starter and grower diets were wheat, corn and soybean meals. Starter and grower diets (in meal form) contained 6.65 or 6.01 g of total P/kg and 3.98 or 3.68 g available P/kg in group I, and 5.67 or 5.05 of total P/kg and 2.98 g or 2.70 g available P/kg in groups II – V, respectively. This experiment, performed over a five-week period, involved Ross 308 male chickens kept in battery cages. Each group was divided into 9 subgroups, each of 9 chickens (81 birds per treatment). Phytase efficacy was evaluated based on performance results, carcass quality and bone mineralization. Optimal performance levels were achieved in group I (2.149 g body weight, 1.776 kg feed/kg gain). P reduction in group II decreased weight gains by 9% and increased feed conversion by about 5%. Diet supplementation with phytase in groups III – V compensated for the decrease in performance observed in group II. The effect exerted by three microbial phytases was similar. The difference in carcass weight between group II and the other groups was significant. P reduction in the diets negatively influenced the process of bone mineralization, which was enhanced by phytase supplementation.

19

Fungal phytases in wholemeal breadmaking I: 3-phytase A improves storage stability and in vitro digestibility of nutrients in wheat breads

58%

Zyla K., Mika M., Gambus H., Nowotny A., Szymczyk B.

Electronic Journal of Polish Agricultural Universities. Series: Biotechnology

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2005

|

tom 08

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nr 4

20

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Wplyw fitazy na wykorzystanie fosforu i skladnikow pokarmowych z wytloku rzepakowego przez kurczeta brojlery

58%

Janocha A., Osek M., Klocek B.

Rośliny Oleiste - Oilseed Crops

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2000

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tom 21

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nr 2

707-712

Ograniczanie wyników

Changes in phytic acid, phytase activity and inorganic phosphorus during maturation of triticale varieties resistant and susceptible to pre-harvest sprouting

Study on stability of fungal phytase as poultry feed additive

Appearance of different phosphatase forms and phosphorus partitioning in nodules of chickpea [Cicer arietinum L.] during development

The effects of dietary phytase and 1,25[OH]2D3 on growth and strength of bones in broiler chickens at day 21 of life

Effect of fertilization and variety on digestibility of phosphorus from plant feedstuffs in pigs

Some physicochemical bone parameters of sows fed microbial phytase-supplemented diet

Effects of phytase on growth performance and digestibility of phosphorus in maize-soyabean meal based diets for young pigs

Phosphatase activity and phosphorus partitioning in nodules of developing mungbean

Influence of dietary phytase and 1,25-dihydroxycholecalciferol supplementation on the activity of digestive enzymes in chickens

Change of the apparent digestibility of nutrients and phosphorus as a function of phosphorus source and phytase supplementation in pigs

Tannins reduce protein but not phosphorus utilization of diet with added phytase in pigs

The bioavailability of zinc from inorganic and organic sources in broiler chickens as affected by addition of phytase

Some hydrolases and their substrates occuring in initial period of germination in Triticale grains of various pre-harvest sprouting resistance

Effects of dietary phytase supplementation on growth and development of limb bones in broiler chickens

Biosynteza fitaz, fosfataz oraz celulaz i ksylanaz w hodowlach grzybów strzępkowych w podłożu stałym

Efficacy of different levels of Escherichia coli phytase in hens fed maize-soyabean meal based diets with a decreased non-phytase phosphorus content

Efficacy of different levels of Escherichia coli phytase in broiler diets with a reduced P content

Efficacy of different phytase preparations in broiler rations

Fungal phytases in wholemeal breadmaking I: 3-phytase A improves storage stability and in vitro digestibility of nutrients in wheat breads

Wplyw fitazy na wykorzystanie fosforu i skladnikow pokarmowych z wytloku rzepakowego przez kurczeta brojlery