Influence of Enzyme Supplementation and Water Treatment on the Nutritional Value of Different Grains for Poults

Fry, Ramon E.; Allred, John B.; Jensen, L. S.; McGinnis, James

doi:10.3382/ps.0370372

Cited by 92 publications

(37 citation statements)

References 4 publications

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“…However the present study and earlier ones (Jensen et al, 1957;Fry et al, 1958;Willingham et al, 1959;Burnett, 1966) (Shapiro et al, unpublished results). Lack of effect on performance cannot be attributed to inactivation of the enzymes in the digestive tract, because some significant effects of enzyme supplementation were observed in the GIT.…”

Section: Supplemented Enzyme Effectscontrasting

confidence: 54%

“…Early studies showed a beneficial effect of using crude amylase and protease preparations (Jensen et al, 1957;Fry et at, 1958; Burnett, 1966) which were later attributed to the p-giucanase activity found in these preparations (Rickes etal, 1962 (Nitsan et al, 1974) and was expressed as glucose produced per min from starch per milligram of enzyme preparation. The values were 0.38 and 0.96 mg in El and EII, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Effect of age and exogenous amylase and protease on development of the digestive tract, pancreatic enzyme activities and digestibility of nutrients in young meat-type chicks

Mahagna¹,

Nir²,

Larbier³

et al. 1995

Reprod. Nutr. Dev.

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Summary― Day-old male meat-type chicks were fed a commercial starter diet supplemented with 2 levels of enzyme preparations containing amylase and proteases up to 14 d of age. Enzyme supplementation had no significant effect on feed intake or growth rate, and was accompagnied by a significant decrease in gizzard content and small intestine weight. The intestine contents increased and this increase was accompanied by a significant decrease in its pH. Enzyme supplementation depressed the activity of chymotrypsin in the pancreas and the'activity of amylase, trypsin and chymotrypsin in the intestinal contents. Some carry-over effects were observed on d 42, 4 weeks after the cessation of the enzyme supplements. These were mainly a significant depression in the activity of trypsin in the intestinal contents. In a balance study, diets supplemented with 0, 250 and 1 000 pg/kg enzyme preparations were supplied. Exogenous enzyme supplements had no significant effect on the digestibility of all the nutrients studied except for the highest level of enzyme supplementation, which improved slightly but consistently the digestibility of amino acids. Some age effects were observed, mainly a decrease in the digestibility of fat and starch, and in the ME of the diet from weeks 1 to 2 followed by an increase during week 3. Protein digestibility and retention of nitrogen decreased with age.

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Section: Supplemented Enzyme Effectscontrasting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Effect of age and exogenous amylase and protease on development of the digestive tract, pancreatic enzyme activities and digestibility of nutrients in young meat-type chicks

Mahagna¹,

Nir²,

Larbier³

et al. 1995

Reprod. Nutr. Dev.

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show abstract

“…This difference was attributed to higher endogenous enzyme occurring in the "Eastern" barley since autoclaving was detrimental (Jensen etal. 1951;Fry et al 1958;Burnett 1962). Burnett (1966) later established lower endogenous B-glucanase levels in Australian versus lrish barley which corresponded to their feeding value.…”

Section: Environmental Differences In Barleymentioning

confidence: 99%

“…PhYtate The benefit of enzymes in diets containing barley for poultry has been known for many years. Early studies used crude amylase and protease preparations (Jensen et al 1957;Fry et al 1958;Burnett 1962) which were later shown to contain B-glucanase activity (Rickes et al 1962 …”

mentioning

confidence: 99%

Enzyme applications for monogastric feeds: A review

Campbell¹,

Bedford²

1992

Can. J. Anim. Sci.

257

118

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“…The levels of the enzymes fed was none, 0.5, 1.0, and 2.0 grams per pound of feed. The following year Fry et al= (1958) reported that the supplementation of Clarase 300 at the rate of one gram per pound of feed containing barley improved weight gains and feed efficiency of poults. However, the supplementation of the enzyme to rations containing wheat or corn had little effect on poults fed from birth to 27 days of age.…”

Section: Feeding Of Enzymesmentioning

confidence: 99%

Proteolytic enzymes in baby pig nutrition

Baker¹

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Influence of Enzyme Supplementation and Water Treatment on the Nutritional Value of Different Grains for Poults

Cited by 92 publications

References 4 publications

Effect of age and exogenous amylase and protease on development of the digestive tract, pancreatic enzyme activities and digestibility of nutrients in young meat-type chicks

Effect of age and exogenous amylase and protease on development of the digestive tract, pancreatic enzyme activities and digestibility of nutrients in young meat-type chicks

Enzyme applications for monogastric feeds: A review

Proteolytic enzymes in baby pig nutrition

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