Fibrolytic enzymes and a ferulic acid esterase-producing bacterial additive applied to alfalfa hay at baling: effects on fibre digestibility, chemical composition and conservation characteristics

2013 ◽  
Vol 70 (1) ◽  
pp. 85-93 ◽  
Author(s):  
J. P. Lynch ◽  
L. Jin ◽  
J. S. Church ◽  
J. Baah ◽  
K. A. Beauchemin
Keyword(s):  
Chemical Composition ◽  
Ferulic Acid ◽  
Ferulic Acid Esterase ◽  
Fibrolytic Enzymes ◽  
Alfalfa Hay

Fiber degradability, chemical composition and conservation characteristics of alfalfa haylage ensiled with exogenous fibrolytic enzymes and a ferulic acid esterase-producing inoculant

2014 ◽  
Vol 94 (4) ◽  
pp. 697-704 ◽  
Author(s):  
J. P. Lynch ◽  
D. Prema ◽  
J. D. Van Hamme ◽  
J. S. Church ◽  
K. A. Beauchemin
Keyword(s):  
Chemical Composition ◽  
Ferulic Acid ◽  
Untreated Control ◽  
Dry Matter ◽  
Neutral Detergent Fiber ◽  
Ferulic Acid Esterase ◽  
Acid Detergent Fiber ◽  
Fibrolytic Enzymes ◽  
Effect Of Treatment

Lynch, J. P., Prema, D., Van Hamme, J. D., Church, J. S. and Beauchemin, K. A. 2014. Fiber degradability, chemical composition and conservation characteristics of alfalfa haylage ensiled with exogenous fibrolytic enzymes and a ferulic acid esterase-producing inoculant. Can. J. Anim. Sci. 94: 697–704. This study investigated the effects of two fibrolytic enzyme products, applied at baling alone or in combination with a ferulic acid esterase-producing bacterial additive, on the ensilage dynamics, chemical composition and digestibility of alfalfa haylage. Five replicate wrapped bales were produced with one of five treatments, including an untreated control, and one of two fibrolytic enzyme products (EN1 and EN2) applied either alone or in combination with a ferulic-acid producing bacterial additive (FAEI). No effect of treatment was observed on the neutral detergent fiber (NDF) (P=0.889) or acid detergent fiber (ADF) (P=0.065) concentrations of haylage after ensilage, but haylage produced using fibrolytic enzyme products underwent greater (P<0.018) increases in temperature following exposure to aerobic conditions. Haylages produced with fibrolytic enzyme products had a greater (P<0.001) in vitro NDF degradability (NDFD) than untreated haylage. The use of fibrolytic enzymes applied to alfalfa haylage at ensiling increased the NDFD, despite minimal effects on the chemical composition of the herbage. However, the greater aerobic deterioration of fibrolytic enzyme-treated bales indicates higher dry matter losses during aerobic exposure. The use of FAEI with fibrolytic enzymes did not further enhance the effects of fibrolytic-enzyme treatments.

Impact of ferulic acid esterase-producing lactobacilli and fibrolytic enzymes on ensiling and digestion kinetics of mixed small-grain silage

2016 ◽  
Vol 72 (1) ◽  
pp. 80-92 ◽  
Author(s):  
L. Jin ◽  
L. Dunière ◽  
J. P. Lynch ◽  
R. Zaheer ◽  
K. Turkington ◽  
...  
Keyword(s):  
Ferulic Acid ◽  
Ferulic Acid Esterase ◽  
Fibrolytic Enzymes ◽  
Digestion Kinetics ◽  
Kinetics Of

Feeding behaviour and digestive kinetics in sheep fed chopped or ground and pelleted low quality alfalfa hay

1990 ◽  
Vol 1990 ◽  
pp. 112-112
Author(s):  
A. de Vega ◽  
J. Gasa ◽  
M. Fondevila ◽  
A. López
Keyword(s):  
Chemical Composition ◽  
Feeding Behaviour ◽  
Coarse Particles ◽  
Alfalfa Hay ◽  
Physical Processing ◽  
Voluntary Intake

Rumen capacity together with speed of rumen emptying limit voluntary intake of low quality well balanced forages (Ellis et al., 1983). Chemical composition and physical processing have important effect on both digestion plus absorption and passage through the reticulo-omasal orifice. Feeding chopped forage generate a large rumen pool of coarse particles which must be broken down by chewing and ruminating before to have a chance to escape from the compartment (Grovum, 1983). Grinding, by contrast, greatly reduce this rumen pool increasing likelihood of particles to leave the foregut (Rodrigue and Allen, 1960). This paper aims to study the effect of physical processing of roughage on feeding behaviour and digestive kinetics together with voluntary intake and digestibility.

scholarly journals Nutritional value, fermentation losses and aerobic stability of elephant grass (Pennisetum purpureum Schum.) silage treated with exogenous fibrolytic enzymes

2020 ◽  
Vol 42 ◽  
pp. e48272
Author(s):  
Maikon Figueredo Lemos ◽  
Alexandro Pereira Andrade ◽  
Pedro Henrique Ferreira da Silva ◽  
Camila Oliveira Santos ◽  
Caio Felipe Barros Souza ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Dry Matter ◽  
Nutritional Value ◽  
Pennisetum Purpureum ◽  
Elephant Grass ◽  
Fibrolytic Enzymes ◽  
Grass Silage ◽  
Aerobic Stability ◽  
Pennisetum Purpureum Schum

The aim of this study was to evaluate nutritional value, fermentation losses, and aerobic stability of elephant grass silage (Pennisetum purpureum Schum.) treated with exogenous fibrolytic enzymes. The experiment was conducted in a completely randomized design with four replicates (experimental silos) and five levels of fibrolytic enzymes (0, 1.5, 3.0, 4.5 and 6.0%). For this, the elephant grass was ensiled at 70 days of age in plastic buckets with 20L capacity. Silos were opened 60 days after sealing. Analyses were made for chemical composition, in vitro dry matter digestibility (IVDMD), effluent losses (EL), gas losses (GL) and dry matter recovery (DMR), as well as the aerobic stability of the silage. Data were analyzed with PROC REG of SAS® University, at 5% probability. There was an increase in IVDMD content (p < 0.0001) and reduction in NDF and ADF contents (p < 0.0001) according to enzyme levels. These results were related to the increase in the degradation of fiber fractions. There were higher EL (p = 0.0062) as a function of enzyme levels and aerobic deterioration after silo opening, at all levels tested. Thus, it can be concluded that the exogenous fibrolytic enzymes change the chemical composition of elephant grass silage, and increase its digestibility and nutritional value. Moreover, when used alone as an additive, fibrolytic enzymes are not able to recover all dry matter of this silage (with effluent and gas losses), and are not able to maintain aerobic stability in the first hours after opening the silos.

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