Effect of freshwater microalgae Nannochloropsis limnetica on the rumen fermentation in vitro

• Autorzy: Marrez D.A. , Cieslak A. , Gawad R. , Ebeid H.M. , Chrenkova M. , Gao M. , Yanza Y.R. , El-Sherbiny M. , Szumacher-Straber M.
• Języki publikacji: EN

Abstrakty

EN

It was hypothesised that Nannochloropsis limnetica due to the specific chemical composition and fatty acids profile, may positively affect rumen fermentation. To confirm this hypothesis the batch culture experiment was conducted to evaluate N. limnetica supplemented at 0, 2, 4 and 6% of the substrate dry matter (DM) on both fermentation and fatty acid proportion in the ruminal culture. It was found that microalgae N. limnetica contain (g · kg−1 DM): crude protein 238, Ca 48.7, Na 31.8 and unsaturated fatty acids (51.7 g · 100 g−1 fatty acids). Moreover, leucine and lysine were the most abundant essential amino acids in the analysed microalgae. The total bacteria count was negatively affected if N. limnetica algae were supplemented at more than 4%. So, the research hypothesis that microalgae N. limnetica may affect rumen fermentation was confirmed, mainly by increasing propionic acid concentration without changes in the total volatile fatty acids concentration. However, a high dose (6%) decreased rumen bacteria count. Further research under commercial farm conditions should be conducted to confirm the usefulness of freshwater microalgae N. limnetica as a feed additive for ruminants.

• Wydawca: -
• Czasopismo: Journal of Animal and Feed Sciences
• Rocznik: 2017
• Tom: 26
• Numer: 4
• Opis fizyczny: p.359-364,ref.

Twórcy

autor

Marrez D.A.

• Food Toxins and Contaminants Department, National Research Centre Cairo, Egypt

autor

Cieslak A.

• Department of Animal Nutrition and Feed Management, Poznan University of Life Sciences, Wołynska 33, 60-637 Poznan, Poland

autor

Gawad R.

• Department of Dairy Sciences, National Research Centre, 33 Bohouth St., Dokki, 12622 Giza, Egypt

autor

Ebeid H.M.

• Department of Dairy Sciences, National Research Centre, 33 Bohouth St., Dokki, 12622 Giza, Egypt

autor

Chrenkova M.

• National Agricultural and Food Centre, Hlohovecka 2, 95141, Nitra-Luzianky, Slovakia

autor

Gao M.

• Department of Animal Nutrition and Feed Management, Poznan University of Life Sciences, Wołynska 33, 60-637 Poznan, Poland

autor

Yanza Y.R.

• Department of Animal Nutrition and Feed Management, Poznan University of Life Sciences, Wołynska 33, 60-637 Poznan, Poland

autor

El-Sherbiny M.

• Department of Dairy Sciences, National Research Centre, 33 Bohouth St., Dokki, 12622 Giza, Egypt

autor

Szumacher-Straber M.

• Department of Animal Nutrition and Feed Management, Poznan University of Life Sciences, Wołynska 33, 60-637 Poznan, Poland

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Identyfikatory

DOI

10.22358/jafs/81275/2017