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Strategies to improve the nutritive value of rice bran in poultry diets. IV. Effects of addition of fish meal and a microbial phytase to duckling diets on bird performance and amino acid digestibility
Year:
1998
Source of publication :
British Poultry Science
Authors :
ניצן, צפרירה
;
.
Volume :
39
Co-Authors:
Martin, E.A., Department of Biochemistry, Microbiology and Nutrition, University of New England, Armidale, NSW 2351, Australia
Nolan, J.V., Department of Biochemistry, Microbiology and Nutrition, University of New England, Armidale, NSW 2351, Australia
Nitsan, Z., Department of Biochemistry, Microbiology and Nutrition, University of New England, Armidale, NSW 2351, Australia, Volcani Centre, Institute of Animal Science, Bet Dagan, Israel
Farrell, D.J., Department of Biochemistry, Microbiology and Nutrition, University of New England, Armidale, NSW 2351, Australia, Department of Agriculture, University of Queensland, St Lucia, QLD 4072, Australia, Queensland Poultry Research and Development Centre, PO Box 327, Cleveland, QLD 4163, Australia
Facilitators :
From page:
612
To page:
621
(
Total pages:
10
)
Abstract:
1. Ducklings were given diets with vegetable protein (VP) and 0 or 600 g rice bran/kg; fish meal (60 g/kg) and a phytase (+, -) were added to the diets (VP + AP). An additional 40 g soyabean meal/kg was added to the diet with rice bran (VP ++ ). Amino acid digestibility and mineral retention were measured in the lower ileum of ducklings killed at 23 d of age. Acid insoluble ash was used as an inert marker. Trypsin and amylase activities were also measured and weights of the pancreas and small intestine recorded at slaughter. 2. Addition of soyabean meal (VP ++) to the diet with rice bran improved growth rate and food intake compared to the diet without (VP) and gave the same food intake and growth rate as the comparable basal diet (VP) without rice bran. Fish meal improved growth rate on the diets without rice bran and improved food intake on this diet (VP + AP). Rice bran depressed growth rate and food conversion ratio (FCR); protein source affected growth rate, food intake and FCR; phytase increased food intake only. There were several interactions. 3. Determined total amino acid composition of the diets appeared to meet the essential amino acid requirements of ducklings. Rice bran depressed the ileal digestibility of virtually all amino acids and phytase had no direct effect, although there were interactions. Fish meal addition to diets with rice bran improved the apparent digestibility of several essential amino acids as well as that of dry matter and crude protein. 4. Ileal retention of some minerals and tibia ash content were reduced by rice bran. Fish meal and phytase inclusion increased P retention and ash in tibia. 5. Higher intestinal trypsin activity and increased pancreas size were seen in ducklings on diets with rice bran compared to those without. Intestinal amylase activity was reduced in ducklings given rice bran, probably because of its low starch content. 6. The stimulating effect of fish meal on duckling performance was probably caused in part by the improvement in the digestibility of some amino acids. The addition of small amounts of minerals in fish meal may have increased mineral retention. Phytase gave benefits anticipated from our previous work, but also improved lysine and threonine digestibility in diets containing vegetable protein only. © 1998, British Poultry Science Ltd.
Note:
Related Files :
Amino Acids
amylase
Animal
Animals
chemistry
Female
Growth, Development and Aging
Male
metabolism
Oryza sativa
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
21153
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:41
You may also be interested in
Scientific Publication
Strategies to improve the nutritive value of rice bran in poultry diets. IV. Effects of addition of fish meal and a microbial phytase to duckling diets on bird performance and amino acid digestibility
39
Martin, E.A., Department of Biochemistry, Microbiology and Nutrition, University of New England, Armidale, NSW 2351, Australia
Nolan, J.V., Department of Biochemistry, Microbiology and Nutrition, University of New England, Armidale, NSW 2351, Australia
Nitsan, Z., Department of Biochemistry, Microbiology and Nutrition, University of New England, Armidale, NSW 2351, Australia, Volcani Centre, Institute of Animal Science, Bet Dagan, Israel
Farrell, D.J., Department of Biochemistry, Microbiology and Nutrition, University of New England, Armidale, NSW 2351, Australia, Department of Agriculture, University of Queensland, St Lucia, QLD 4072, Australia, Queensland Poultry Research and Development Centre, PO Box 327, Cleveland, QLD 4163, Australia
Strategies to improve the nutritive value of rice bran in poultry diets. IV. Effects of addition of fish meal and a microbial phytase to duckling diets on bird performance and amino acid digestibility
1. Ducklings were given diets with vegetable protein (VP) and 0 or 600 g rice bran/kg; fish meal (60 g/kg) and a phytase (+, -) were added to the diets (VP + AP). An additional 40 g soyabean meal/kg was added to the diet with rice bran (VP ++ ). Amino acid digestibility and mineral retention were measured in the lower ileum of ducklings killed at 23 d of age. Acid insoluble ash was used as an inert marker. Trypsin and amylase activities were also measured and weights of the pancreas and small intestine recorded at slaughter. 2. Addition of soyabean meal (VP ++) to the diet with rice bran improved growth rate and food intake compared to the diet without (VP) and gave the same food intake and growth rate as the comparable basal diet (VP) without rice bran. Fish meal improved growth rate on the diets without rice bran and improved food intake on this diet (VP + AP). Rice bran depressed growth rate and food conversion ratio (FCR); protein source affected growth rate, food intake and FCR; phytase increased food intake only. There were several interactions. 3. Determined total amino acid composition of the diets appeared to meet the essential amino acid requirements of ducklings. Rice bran depressed the ileal digestibility of virtually all amino acids and phytase had no direct effect, although there were interactions. Fish meal addition to diets with rice bran improved the apparent digestibility of several essential amino acids as well as that of dry matter and crude protein. 4. Ileal retention of some minerals and tibia ash content were reduced by rice bran. Fish meal and phytase inclusion increased P retention and ash in tibia. 5. Higher intestinal trypsin activity and increased pancreas size were seen in ducklings on diets with rice bran compared to those without. Intestinal amylase activity was reduced in ducklings given rice bran, probably because of its low starch content. 6. The stimulating effect of fish meal on duckling performance was probably caused in part by the improvement in the digestibility of some amino acids. The addition of small amounts of minerals in fish meal may have increased mineral retention. Phytase gave benefits anticipated from our previous work, but also improved lysine and threonine digestibility in diets containing vegetable protein only. © 1998, British Poultry Science Ltd.
Scientific Publication
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