Effect of Method of Application of a Fibrolytic Enzyme Product on Digestive Processes and Milk Production in Holstein-Friesian Cows

Sutton, John; Phipps, R. H.; Beever, D. E.; Humphries, D. J.; Hartnell, G. F.; Vicini, J.L.; Hard, D.L.

doi:10.3168/jds.s0022-0302(03)73633-9

Cited by 61 publications

(42 citation statements)

References 17 publications

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“…Consequently, no differences were detected in the milk component yields either when enzyme supplemented and control diets were compared (Table 3). Similar results were obtained by Rode et al (1999), Yang et al (1999), Kung et al (2000) and Sutton et al (2003) in dairy cows. Nevertheless, Rode et al (1999) reported a decrease in milk fat content, using a similar fi brolytic enzyme and application procedure than in our experiment and Titi and Lubbadeh (2004) reported an increase in milk fat and protein in suckling ewes.…”

Section: Results and Discusionsupporting

confidence: 78%

“…Nevertheless, Rode et al (1999) reported a decrease in milk fat content, using a similar fi brolytic enzyme and application procedure than in our experiment and Titi and Lubbadeh (2004) reported an increase in milk fat and protein in suckling ewes. Moreover, Sutton et al (2003) concluded that fi brolytic enzymes enhance particle outfl ow rate from the rumen and, in some instances, tend to shift fi bre digestion from the rumen to the gut. The reasons are unclear and further research on the mode of action of fi brolytic enzymes is still necessary.…”

Section: Results and Discusionmentioning

confidence: 99%

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Lactational effects of adding a fibrolytic enzyme complex to the concentrate of lactating dairy goats

González¹,

Caja²,

Albanell³

et al. 2008

J. Anim. Feed Sci.

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Twenty-four multiparous Murciano-Granadina dairy goats in mid-lactation (wk 8 to 30) were used in a single cross-over design to evaluate the effects of supplementation with an exogenous fi brolytic enzyme preparation, characterized by cellulase and xylanase activities, on feed intake, milk yield and composition, and liveweight and body condition changes. Goats received ad libitum a basal total mixed ration composed of 65% forage and 35% concentrate. The treatments were: control (without enzyme) and experimental with enzyme (included at the recommended commercial dose of 4.7 ml/kg concentrate). Feed intake, milk yield, 4% fat corrected milk yield, and milk composition were not affected by enzyme supplementation, although milk casein content tended to decrease in the enzyme treatment. Body weight change tended to be higher with the enzyme treatment.

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Section: Results and Discusionsupporting

confidence: 78%

Section: Results and Discusionmentioning

confidence: 99%

Lactational effects of adding a fibrolytic enzyme complex to the concentrate of lactating dairy goats

González¹,

Caja²,

Albanell³

et al. 2008

J. Anim. Feed Sci.

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“…Results clearly indicated that no significant effect on VFA's concentration by Bactozyme or Ru-max supplementation at 1 or 3h after feeding but the VFA increased significantly at 6h after feeding compared to the control group. This result was associated with Kung et al (2002); Sutton et al (2003); Eun and Beauchemin (2005) who concluded that total VFA were not affected by enzyme supplementation, while Arriola et al (2011) reported that fibrolytic enzymes supplementation increased (P<0.03) VFA concentration. However, the animal responses to DFM addition have been highly variable, apparently influenced by the composition of the diet and much remains to be elucidated about the dose-and diet-dependence of DFM effects (Chaucheyras-Durand et al, 2008).…”

Section: Discussionmentioning

confidence: 86%

Comparison of Two Products of Direct-Fed Microbial Supplementation on the Nutrient Utilization and Ruminal Fermentation in Sheep

Sallam¹,

Allam

Najadi³

2014

JAS

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This experiment was undertaken to evaluate the potential impacts of supplementing two direct-fed microbial (DFM) products, namely Bactozyme and Ru-max, to the diet of 12 male Barki sheep (live body weight 46.6 ± 2.9 kg) on dry matter intake (DMI), apparent total tract digestibility of nutrients, nitrogen balance and rumen fermentation characteristics. The Bactozyme or Ru-max were supplemented at a rate of 1.0 g/head/day, mixed with the concentrate mixture. Animals were randomly allocated into 3 equal groups (n=4) and were subjected to the digestibility trails.The results showed that the inclusion of either products of DFM had no positive impact on DMI, but non-significantly improved the apparent total tract digestibility of dry matter (DM), organic matter (OM) and crude protein (CP). However, the Bactozyme addition increased (P<0.05) the apparent total tract digestibility of neutral detergent fiber (NDF) and acid detergent fiber (ADF). The enhancement of the apparent total tract digestibility of cell wall was not significant for the two of DFM products and a non-significant improvement in cell wall digestion due to the Ru-max supplementation over the control group was found. The DFM products had positive impacts on the average of total digestible nutrients (TDN) and digestible crude protein (DCP) but non significant in comparison with the untreated animals. In addition, the nitrogen balance was improved (P>0.05) by 8 and 13% due to Ru-max and Bactozyme supplementation, respectively in comparison with the control group. The results also revealed that inclusion of DFM products had no impacts on rumen pH 3.0 and 6.0 h after feeding but Bactozyme reduced (P<0.05) the rumen pH 1.0 h after feeding compared to the control group. The inclusion of Bactozyme and Ru-max increased (P>0.05) the NH 3 -N concentration in the rumen at 1.0 and 3.0 h after feeding but the Bactozyme decreased (P<0.05) the NH 3 -N concentration and increased the volatile fatty acids (VFA) at 6.0 h after feeding compared to the control group. Overall, results indicated that the two DFM products had positive impacts on cell wall digestibility, which in turn improves metabolic energy supply and nutrients utilization in ruminants as well.

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“…As enzyme activity strictly depends on the type of feed the enzyme-feed specificity should be given a special consideration when selecting an appropriate method (Hvelplund et al, 2009). Sutton et al (2003) reported that favorable responses when enzyme added to the TMR mixture possibly due to the improved intake of digestible organic matter where in same study they found no significant effect when enzyme applied to the concentrate or directly infused to the rumen. Significant improvements in both Dry Matter Intake (DMI) and Dry Matter Digestibility (DMD) were observed in sheep fed with fibrolytic enzyme supplemented guinea grass (Panicum maximum) hay (Beauchemin et al, 2001).…”

Section: Application Of Enzymesmentioning

confidence: 85%

Exogenous Enzymes in Ruminant Nutrition: A Review

Sujani¹,

Seresinhe²

2015

Asian J. of Animal Sciences

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The concept of supplementation of ruminant diets with exogenous enzymes is not new though a considerable research interest on this field has been emerged from 1990s. Availability of wide range of exogenous enzyme products, development of better methods to evaluate enzyme activity, revised knowledge on rumen functions and recent advances of biotechnology which lowers the cost of enzyme production have fuelled the enzyme utilization in ruminant industries. The exogenous enzymes used in ruminant diets can be characterized in to main categories as fibrolytic, amylolytic and proteolytic based on specific substrate on which their enzyme activity can perform. The sources of these exogenous enzymes are mainly four bacterial species, three fungal species and some yeasts. Solid State Fermentation (SSF) and Submerged Fermentation (SmF) are the major methods for enzyme extraction which have combined with several other biotechnological aspects. The enzyme application method can vary in a wide range from applying to forage at harvesting, at ensiling, at feeding and the portion of feed which is mixed with enzyme may also vary from to forage to concentrate to a part of totally mixed rations. Up to date numerous number of researches have been done with ruminants like cattle both dairy and beef, goat, sheep and less with buffalo. The results seems to be inconsistent but positive results on feed intake, nutrient digestibility, growth performance, other production parameters, manure nutrient excretion etc., have been obtained. Therefore more fine-tuned research efforts are highly suggested for the generalization of exogenous enzyme usage in ruminant nutrition.

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Effect of Method of Application of a Fibrolytic Enzyme Product on Digestive Processes and Milk Production in Holstein-Friesian Cows

Cited by 61 publications

References 17 publications

Lactational effects of adding a fibrolytic enzyme complex to the concentrate of lactating dairy goats

Lactational effects of adding a fibrolytic enzyme complex to the concentrate of lactating dairy goats

Comparison of Two Products of Direct-Fed Microbial Supplementation on the Nutrient Utilization and Ruminal Fermentation in Sheep

Exogenous Enzymes in Ruminant Nutrition: A Review

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