Evaluation of a nonstarch polysaccharidase feed enzyme in dairy cow diets.

@article{Beauchemin2000EvaluationOA,
  title={Evaluation of a nonstarch polysaccharidase feed enzyme in dairy cow diets.},
  author={Karen A. Beauchemin and Lyle M. Rode and M. Maekawa and Diego P. Morgavi and Raquel van Kampen},
  journal={Journal of dairy science},
  year={2000},
  volume={83 3},
  pages={
          543-53
        }
}
The objective of this study was to evaluate a commercial feed enzyme product (Natugrain 33-L; BASF Corporation, Ludwigshafen, Germany) used mainly in poultry diets for use in ruminant diets. The product contained mainly beta-glucanase, xylanase, and endocellulase activities. The study was conducted as a double 3 x 3 Latin square design with six lactating dairy cows (84 +/- 12 DIM) to measure intake, chewing activities, total tract digestion, and milk production. An additional three cows fitted… 

The proportion of the diet to which fibrolytic enzymes are added affects nutrient digestion by lactating dairy cows.

The results indicate that enzyme supplementation increases total tract digestibility of organic matter and fiber and the proportion of the diet to which the enzyme is applied must be maximized to ensure a beneficial response.

A comparison of methods of adding fibrolytic enzymes to lactating cow diets.

The results indicate that fibrolytic enzymes have the potential to increase digestibility and milk production in dairy cows because digestion is low relative to potential Digestibility and when digestion is higher, as was observed in lambs or in vitro, no improvement in digestibility occurs.

Effect of adding fibrolytic enzymes to dairy cow rations on digestive activity in the rumen.

the objective of the study was to determine whether supplementing the rations of red-and-white Polish holstein-friesian dairy cows with exogenous fibrolytic enzymes in the form of fibrozymetm

Effect of exogenous fibrolytic enzymes on ruminal fermentation and nutrient digestion in dairy cows

The application of exogenous fibrolytic enzymes fed to dairy cows did not show a significant effect on any parameter tested and the apparent ruminal digestibilities of DM, organic matter, NDF and ADF, milk yield and composition were also not affected by the enzyme supplementation.

A fibrolytic enzyme additive for lactating Holstein cow diets: ruminal fermentation, rumen microbial populations, and enteric methane emissions.

A shift in ruminal bacterial communities and higher CH(4) emissions could imply increased ruminal digestion of feed, which needs to be substantiated in longer term studies.

Effect of fibrolytic enzymes on lactational performance, feeding behavior, and digestibility in high-producing dairy cows fed a barley silage-based diet.

Pretreating dairy cow barley silage-based diet with 0.75 mL of FETR/kg of TMR increased the milk production efficiency and could benefit the dairy industry in western Canada.

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

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, and body weight change tended to be higher with the enzymetreatment.

Digestion, ruminal pH, salivation, and feeding behavior of lactating dairy cows fed a diet supplemented with fibrolytic enzymes

The objectives were to determine the effects of supplementing different components of the diet with enzymes on dry matter intake, ruminal fermentation, total tract digestion, milk production, and
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References

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Results from this study indicate that direct application of enzymes to forages is capable of improving forage digestion.

Effects of an enzyme feed additive on extent of digestion and milk production of lactating dairy cows.

The results demonstrated the benefits of using a fibrolytic enzyme additive to enhance feed digestion and milk production by dairy cows.

Effect of direct-fed fibrolytic enzymes on the lactational performance of dairy cows.

Fibrolytic enzymes applied to the forage portion of the rations prior to feeding improved lactational performance of early and midlactation cows.

Effects of grain source and enzyme additive on site and extent of nutrient digestion in dairy cows.

Results indicate that the use of hull-less barley rather than barley increased the digestible energy intake of dairy cows, resulting in higher milk production and theUse of a fibrolytic enzyme mixture enhanced feed digestibility and milk production.

Effects of fibrolytic enzymes in corn or barley diets on performance and carcass characteristics of feedlot cattle

Meat from barley- fed calves tended to be more highly marbled and was brighter in colour than meat from corn-fed calves, but diet had no effect on muscle score, rib eye area, or carcass leanness.

Effect of exogenous enzymes on digestibility of barley silage and growth performance of feedlot cattle

Barley silage was sprayed with water or with a 2:1 combination of commercial cellulase and xylanase preparations, or the enzymes were introduced directly into the rumen, in a digestibility study using 10 sheep to study apparent digestibilities of dry matter and neutral detergent fibre.

Effects of dietary neutral detergent fiber concentration and alfalfa hay quality on chewing, rumen function, and milk production of dairy cows.

Effects of decreased forage quality because of the increased maturity of the alfalfa hay can be minimized by formulating diets for specific NDF concentration, and dietary NDF concentrations should be higher than currently recommended with allowance for greater proportions of NDF from concentrates.

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In addition to NDF, new improved methods for total dietary fiber and nonstarch polysaccharides including pectin and beta-glucans now are available and are also of interest in rumen fermentation.

Fibrolytic enzymes increase fiber digestibility and growth rate of steers fed dry forages

Fibrolytic enzymes improve weight gain of cattle but optimal enzyme levels depend upon the type of forage, and no response to enzymes was observed for barley silage.

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  • K. Beauchemin
  • Medicine
    The Veterinary clinics of North America. Food animal practice
  • 1991