Cellulose Digestibility of Fibrous Materials Treated With Trichoderma Viride Cellulase

Autrey, K.M.; McCaskey, T.A.; Little, Joe A.

doi:10.3168/jds.s0022-0302(75)84519-x

Cited by 42 publications

(16 citation statements)

References 11 publications

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“…The improvement of CMCase and amylase may be the result of increase of fungi, F. succinogees and R. flavefaciens . Although AOC does not produce the enzymatic machinery to completely depolymerize structural carbohydrates to simple sugars, it does produce enzymes that cause partial depolymerization (Boing ) and it aids rumen cellulytic bacteria in complete depolymerization of cellulosic material to simple sugars (Autrey et al ). Schmidt et al () found that AOC accelerated the production and maturation of zoospores of Neocallimastix frontalis EB 188, along with an elevated production of protein and CMCase.…”

Section: Discussionmentioning

confidence: 99%

Effects of addition of Aspergillus oryzae culture and 2‐hydroxyl‐4‐(methylthio) butanoic acid on milk performance and rumen fermentation of dairy cows

Sun

Wang³

et al. 2016

Animal Science Journal

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To investigate effects of Aspergillus oryzae culture (AOC) and 2-hydroxy-4-(methylthio) butanoic acid (HMB) on milk performance and rumen fermentation of dairy cows. Sixty-four multiparous Chinese Holstein cows were randomly allocated into four experimental diets: (i) Control diet; (ii) AOC diet: 5 g AOC/day per head; (iii) HMB diet: 25 g HMB/day; and (iv) AH diet: 5 g AOC plus 25 g HMB/day. Added HMB tended to increase the yield of milk protein (P = 0.06) and 3.5% fat-corrected milk (P = 0.08) and milk fat content (P = 0.09). Milk fat yield (P = 0.03) and the contents of milk protein (P = 0.05) were increased by adding HMB. The cows fed on AOC diet had a tendency for higher body weight (BW) gain (P = 0.08). Addition of AOC, HMB and AH increased content of microbial protein (MCP) and total volatile fatty acids (VFA) (P < 0.01) in rumen fluid. Populations of rumen fungi, Fibrobacter succinogenes and Ruminococcus flavefaciens relative to total bacterial 16S rDNA (P ≤ 0.03) and activity of carboxymethylcellulase (CMCase) (P < 0.01) were increased with added AOC or HMB. It is inferred that added AOC or HMB can increase the contents of MCP and total VFA potentially by stimulating rumen microbe populations and CMCase activity.

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Section: Discussionmentioning

confidence: 99%

Effects of addition of Aspergillus oryzae culture and 2‐hydroxyl‐4‐(methylthio) butanoic acid on milk performance and rumen fermentation of dairy cows

Sun

Wang³

et al. 2016

Animal Science Journal

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“…Research has already shown that different cellulolytic preparations vary markedly in their ability to solubilize cell-wall material. This ability depends on the producer micro-organisms of the enzymes (Autrey et al 1975, McDonald 1977, Vaisto et al 1978) and the rate of the application of the enzymes (Autrey et al 1975, Nehring et al 1983). …”

Section: Introductionmentioning

confidence: 99%

The effect of inoculants and cellulase on the fermentation and microbiological composition of grass silage: I Biochemical changes in the silages

Rauramaa

Setälä

Moisio

et al. 1987

AFSci

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Abstract. The effect of the inoculation and the adding of the cellulase enzyme on the fermentation of sugar-rich, direct cut grass were studied. The control silages were made by using AIV II solution and no additives. The silages were prepared from the first cut on a farm scale in the summer of 1985.Generally all four silages were organoleptically good. The results showed only minor differences in the fermentation between untreated and inoculated or enzyme silages. The quality of fermentation, however, was improved in inoculated and enzyme silages. The quality further improved by using the AIV II solution. This was supported by the changes in the pH, ammonia, buffering capacity, redox potential, temperature and finally by a better digestibility of organic matter.

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“…However, the effect on cell wall content is time-dependent (Autrey et al 1975), and may be affected by forage DM and maturity at ensiling (Van Vurren et al 1989). Consequently, improvement in silage quality due to polysaccharidase additives is not shown in all experiments, especially under field conditions (Owen 1962;Stokes 1985;Jaster and Moore 1988).…”

mentioning

confidence: 99%

Effect of enzyme additives on quality of alfalfa/grass silage and dairy cow performance

Fredeen¹,

McQueen²

1993

Can. J. Anim. Sci.

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(WSC), ammonia N. acid-detergent fiber N and organic acids, pH, DM disappearance, and temperature changes during ensiling were measured to assess silage quality. Six sheep were also used in a repeated Latin square design to determine digestibility of the second-cut silages. First-cut silage, which contained about 50% timothy, and50% alfalfa was qualiratively similar across treatments except fbr a lower (P < 0.05) concentration of hemicellulose in Grass-treated silage. The only effect (P < 0.05) on quality of second-cut silage. which contained about 80% alfalfa and 20% timothy, was an increase in estimated DM loss in Grass-treated silage compared with Alfa and the control. Despite the negligible effects on silage quality parameters, Grass slightly depressed (P < 0.10) the yield of fat-corrected milk in cows fed first-cut silage, and DM intake of cows fed second-cut forage was elevated slightly (P < 0.05) and fat percent was depressed (P < 0.05) by AIfa relative to the control. Consequently, although the change was small, enzyme treatment of forages may represent a means of reducing the fat percent of milk. Sheep consumed more (P < 0.05) second-cut siiage treated with Alfa, and DM digestibility was higher (P : 0.09) when compared with the control.An enzyme mixture containing amylase may be marginally more eff'ective when forage mixtures contain more alfalfa than timothy.

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Cellulose Digestibility of Fibrous Materials Treated With Trichoderma Viride Cellulase

Cited by 42 publications

References 11 publications

Effects of addition of Aspergillus oryzae culture and 2‐hydroxyl‐4‐(methylthio) butanoic acid on milk performance and rumen fermentation of dairy cows

Effects of addition of Aspergillus oryzae culture and 2‐hydroxyl‐4‐(methylthio) butanoic acid on milk performance and rumen fermentation of dairy cows

The effect of inoculants and cellulase on the fermentation and microbiological composition of grass silage: I Biochemical changes in the silages

Effect of enzyme additives on quality of alfalfa/grass silage and dairy cow performance

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