The Bioconversion of Sugar Beet Pulp into Microbial Protein with Aspergillus Tamarii by Solid State Fermentation

Data reported in the literature indicate that the efficiency of microbial protein production to ruminants vary considerably, i.e. 14-49 g microbial N/kg digestible organic matter apparently fermented in the rumen (ARC, 1984). This variation could be due to the effects of several factors, e.g. different types of feeds, rumen digesta outflow rate. The present experiment was conducted to examine whether there were differences between types of carbohydrate feedstuffs, e.g. ammonia-treated straw, barley and sugar beet pulp, as energy sources for the synthesis of microbial protein in sheep.Four Blackface x Suffolk wethers (body weight 39-42 kg) fitted with a rumen cannula were used. The animals were housed in metabolic cages and were offered 800 g/day of ammonia-treated straw (control) with or without supplementation with sugar beet pulp or barley at 20%, and 40% on fresh weight basis (SBP20, SBP40, B20 and B40 respectively). A 4 x 5 latin square design was used. The control diet also contained 20 g urea, 20 g casein, 3.4 g Na2SO4 and 10 g mineral & vitamin mixture per kg DM. Its N and ash contents were 25.6 and 74.1 g/kg DM respectively.

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Effect of the sugar-beet pulp water activity on the solid-state culture of Trichoderma viride TS

Applied Microbiology and Biotechnology ◽

10.1007/bf00253028 ◽

1987 ◽

Vol 26 (6) ◽

pp. 537-541 ◽

Cited By ~ 19

Author(s):

W. Grajek ◽

P. Gervais

Keyword(s):

Solid State ◽

Sugar Beet ◽

Water Activity ◽

Trichoderma Viride ◽

Sugar Beet Pulp ◽

State Culture ◽

Solid State Culture ◽

Beet Pulp

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The effect of supplementing straw with barley or unmolassed sugar-beet pulp on microbial protein supply in sheep estimated from urinary purine derivative excretion

Animal Science ◽

10.1017/s0003356100021103 ◽

1992 ◽

Vol 55 (3) ◽

pp. 413-417 ◽

Cited By ~ 20

Author(s):

X. B. Chen ◽

S. A. Abdulrazak ◽

W. J. Shand ◽

E. R. Ørskov

Keyword(s):

Sugar Beet ◽

Block Design ◽

Live Weight ◽

Sugar Beet Pulp ◽

Barley Straw ◽

Microbial Protein ◽

Purine Derivative ◽

Total Diet ◽

Beet Pulp ◽

Protein Supply

AbstractFour sheep (live weight 39 to 42 kg) fitted with rumen cannulas were offered ammonia-treated barley straw alone (control) or supplemented with unmolassed sugar-beet pulp or rolled barley at 0·20 or 0·40 of the total diet on a fresh weight basis (SBP20, SBP40, B20 and B40, respectively) using a 4 × 5 randomized block design. Total diet intakes were 710, 873, 1054, 843 and 1021 g dry matter per day for control, SBP20, SBP40, B20 and B40 respectively. The intake of straw was depressed significantly with SBP40 and B40 (P < 0·05). Rumen pH and ammonia concentration decreased, and total volatile fatty acid concentrations increased (P < 0·05) with increasing level of supplementation for both supplements. Rumen liquid outflow rate was affected little by the supplementation although this measurement for B40 was significantly higher than that for the other treatments. Microbial protein supply, estimated from urinary excretion of purine derivatives, increased significantly with the increasing amounts of supplements (4·5, 6·7, 8·5, 7·1 and 9·0 (s.e.d. 0·73) g N per day for control, SBP20, SBP40, B20 and B40 respectively) (P < 0·05). The calculated efficiency of microbial protein production was 12·8, 14·2, 14·3, 15·7 and 14·5 (s.e.d. 1·45) g N per kg digestible organic matter intake (DOMI) for the five treatments. Although this value was lowest with the control, differences between treatments were not significant (P > 0·05). It seems that microbial protein yield per unit DOMI for a diet based on ammonia-treated straw could not be improved substantially by supplementation with sugar-beet pulp or barley.

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