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Edney MJ, Rossnagel BG, Raboy V. Effect of Low-Phytate Barley on Malt Quality, Including Mineral Loss, during Fermentation. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2018. [DOI: 10.1094/asbcj-2007-0305-01] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- M. J. Edney
- Grain Research Laboratory, Canadian Grain Commission, Winnipeg, MB, Canada
| | - B. G. Rossnagel
- Crop Development Centre, University of Saskatchewan, Saskatoon, SK, Canada
| | - V. Raboy
- United States Department of Agriculture-Agricultural Research Service, Aberdeen, ID
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2
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Affiliation(s)
- Karen Cichy
- USDA-ARS Small Grains and Potato Germplasm Research Unit; Aberdeen Idaho
| | - Victor Raboy
- USDA-ARS Small Grains and Potato Germplasm Research Unit; Aberdeen Idaho
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3
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Scientific Opinion on the potential reduction of the currently authorised maximum zinc content in complete feed. EFSA J 2014. [DOI: 10.2903/j.efsa.2014.3668] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Brodacki A, Batkowska J, Makarski B. The effect of feeding with feedstuff containing microbial and plant phytase additive on performance of young slaughter turkeys. ACTA AGR SCAND A-AN 2009. [DOI: 10.1080/09064700903160702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Leytem A, Willing B, Thacker P. Phytate utilization and phosphorus excretion by broiler chickens fed diets containing cereal grains varying in phytate and phytase content. Anim Feed Sci Technol 2008. [DOI: 10.1016/j.anifeedsci.2007.11.006] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Leytem AB, Plumstead PW, Maguire RO, Kwanyuen P, Burton JW, Brake J. Interaction of calcium and phytate in broiler diets. 2. Effects on total and soluble phosphorus excretion. Poult Sci 2008; 87:459-67. [PMID: 18281571 DOI: 10.3382/ps.2007-00229] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023] Open
Abstract
Dietary Ca has been reported to influence the amount of phytate excreted from broilers and affect the solubility of P in excreta. To address the effects of dietary Ca and phytate on P excretion, 12 dietary treatments were fed to broilers from 16 to 21 d of age. Treatments consisted of 3 levels of phytate P (0.10, 0.24, and 0.28%) and 4 levels of Ca (0.47, 0.70, 0.93, and 1.16%) in a randomized complete block design. Feed phytate concentrations were varied by formulating diets with 3 different soybean meals (SBM): a low-phytate SBM, a commercial SBM, and a high phytate Prolina SBM having phytate P concentrations of 0.15 to 0.51%. Fresh excreta was collected from cages during 2 separate 24-h periods; collection I commenced after the start of dietary treatments (16 to 17 d) and collection II followed a 3-d adaptation period (19 to 20 d). Ileal samples were also collected at 21 d. Excreta samples were analyzed for total P, water soluble P (WSP), and phytate P, whereas ileal samples were analyzed for total P and phytate P. Results indicated that excreta total P could be reduced by up to 63% and WSP by up to 66% with dietary inclusion of low-phytate SBM. There was a significant effect of dietary Ca on both the excreta WSP and the ratio of WSP:total P. As dietary Ca increased, the excreta WSP and WSP:total P decreased, with the effects being more pronounced following a dietary adaptation period. There was a linear relationship between the slope of the response in WSP to dietary Ca and feed phytate content for excreta from collection II (r(2) = 0.99). There was also a negative correlation between excreta phytate concentration and excreta WSP during both excreta collections. The response in WSP to dietary manipulation was important from an environmental perspective because WSP in excreta has been related to potential for off-site P losses following land application.
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Affiliation(s)
- A B Leytem
- USDA, Agricultural Research Service, Northwest Irrigation and Soils Research Laboratory, 3793 N 3600 E, Kimberly, ID 83341-5076, USA.
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Htoo JK, Sauer WC, Yáñez JL, Cervantes M, Zhang Y, Helm JH, Zijlstra RT. Effect of low-phytate barley or phytase supplementation to a barley-soybean meal diet on phosphorus retention and excretion by grower pigs. J Anim Sci 2007; 85:2941-8. [PMID: 17591717 DOI: 10.2527/jas.2006-816] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Two studies were conducted to determine the effect of diets containing low-phytate barley or supplemented with phytase on P balance and excretion in grower pigs. In Exp. 1, eight 32-kg barrows were assigned to a repeated, 4 x 4 Latin square design and fed 4 diets that contained 96% barley: normal-phytate hulled barley (HB), low-phytate hulled barley (LPHB), normal-phytate hull-less barley (HLB), and low-phytate hull-less barley (LPHLB). The barley cultivars contained 0.16, 0.05, 0.24, and 0.03% phytate, respectively. Inorganic P (iP) was added to the HB and HLB diets to meet the 1998 National Research Council recommendation of available P (aP, 0.23%), whereas LPHB and LPHLB contained sufficient aP. The diets were fed at 2.5 times the maintenance requirement for ME. The apparent total tract digestibilities (ATTD) of P did not differ between the hulled and hull-less barley diets, but P retention (%) and excretion were greater in pigs fed the hull-less barley diets (P < 0.05). The ATTD of P was greater and P excretion was 35% lower in pigs fed the low-phytate compared with the normal-phytate diets (P < 0.001). The amount of P retained (g/d) was greater (P < 0.001) in pigs fed low-phytate barley, reflecting an ATTD of P of 65 and 49% for low-phytate and normal-phytate barley, respectively (P < 0.001). In Exp. 2, eight 21-kg barrows were assigned to a repeated, 4 x 4 Latin square design and fed 4 diets based on barley and soybean meal (SBM): HB-SBM, HB-SBM + iP, HB-SBM + phytase, and LPHB-SBM. The HB-SBM and HB-SBM + phytase diets were deficient in aP, whereas the HB-SBM + iP and LPHB-SBM diets had adequate aP. The feeding regimen was similar to that of Exp. 1. Adding iP to the HB-SBM diet did not affect the ATTD but increased the amount of P retained (g/d) and excreted (P < 0.001). The ATTD and amount of P retained (g/d) did not differ among pigs fed the HB-SBM + iP, HB-SBM + phytase, and LPHB-SBM diets. However, pigs fed the HB-SBM + phytase and LPHB-SBM diets excreted 32 and 29% less P, respectively, than pigs fed the HB-SBM + iP diet (P < 0.05), confirming that low-phytate barley is as effective as supplemental phytase in improving P digestibility and utilization and decreasing P excretion in grower pigs.
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Affiliation(s)
- J K Htoo
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, Alberta, Canada T6G 2P5
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Linares LB, Broomhead JN, Guaiume EA, Ledoux DR, Veum TL, Raboy V. Effects of low phytate barley (Hordeum vulgare L.) on zinc utilization in young broiler chicks. Poult Sci 2007; 86:299-308. [PMID: 17234843 DOI: 10.1093/ps/86.2.299] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Two 21-d experiments were conducted to evaluate the effects of low phytate barley (LPB) on Zn utilization by young broiler chicks and to determine the contribution of endogenous phytase, present in LPB. In the first experiment, ninety-six 1-d-old male chicks were assigned to a 2 x 3 factorial arrangement of treatments (4 pens of 4 chicks/treatment). Factors were barley type [wild-type barley (WTB) and LPB mutant M 955] and supplemental Zn (0, 10, or 20 mg of Zn/kg). In the second experiment, two hundred forty 1-d-old straight-run broiler chicks were assigned to a 2 x 2 x 3 factorial arrangement of treatments (4 pens of 5 chicks/treatment). Factors were barley type (WTB and LPB), autoclave treatment [nonautoclaved or autoclaved (121 degrees C, 20 kg/cm(2), 20 min)], and supplemental Zn (0, 10 or 20 mg of Zn/kg). Barley made up 60% of the diets and was the only source of phytate. On average, basal diets contained 26 mg of Zn/kg. Feed intake and body weight gain were greater (P < 0.05) in broilers fed LPB compared with WTB in experiment 2. Zinc concentration in toes and tibias were affected (P < 0.0001) by barley type (LPB > WTB) and supplemented Zn levels (20 > 10 > 0 mg of Zn/kg), and significant barley type x Zn interactions were also observed in both experiments. Substitution of LPB for WTB increased tibia and toe Zn by 46 and 25%, respectively, an increase comparable to that achieved with supplementing the diet with 20 mg of Zn/kg. No effect of autoclaving was observed for any variable in experiment 2. Retention of P and Zn was higher (P < 0.001) in chicks fed LPB compared with WTB in both experiments. Zinc retention was influenced (P < 0.0001) by dietary Zn, and barley type x Zn level interactions (P < 0.05) were observed in both experiments. Chicks fed LPB utilized more dietary Zn and P than those fed WTB, and this improved mineral utilization was not due to endogenous phytase present in barley.
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Affiliation(s)
- L B Linares
- Department of Animal Sciences, University of Missouri, Columbia, Missouri 65211, USA
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Htoo JK, Sauer WC, Zhang Y, Cervantes M, Liao SF, Araiza BA, Morales A, Torrentera N. The effect of feeding low-phytate barley-soybean meal diets differing in protein content to growing pigs on the excretion of phosphorus and nitrogen. J Anim Sci 2007; 85:700-5. [PMID: 17121975 DOI: 10.2527/jas.2006-249] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
An experiment was conducted with growing pigs to determine the excretion of P and N in 4 barley-based diets formulated to contain 18 or 15% CP by using a normal barley (NB) or a low-phytate barley (LPB). The NB contained 0.31% total P and 0.19% phytate P; the LPB contained 0.32% total P and 0.01% phytate P. The diets were supplemented, when so required, with lysine, methionine, threonine, and tryptophan to meet their apparent ileal digestible supplies according to the NRC (1998). The diets containing NB were supplemented with inorganic P to meet the NRC (1998) recommendation for available P (0.23%). The diets containing LPB were not supplemented with inorganic P because these contained sufficient available P (0.27%). Eight barrows with an average BW of 20.9 kg were assigned to the 4 dietary treatments according to a repeated 4 x 4 Latin square design. The diets were fed at a rate of 2.5 times the ME requirement for maintenance. The barrows were fed twice daily, at 0800 and 1500, equal amounts each meal. Water was added to the feed at a ratio of 2.5:1. Each experimental period consisted of a 7-d adaptation period followed by a 5-d collection of feces and urine. The substitution of NB with LPB decreased (P < 0.001) the total P excretion by 38 and 43% for the 18 and 15% CP diets, respectively. Reducing the CP content from 18 to 15% decreased (P < 0.001) the N excretion by 29 and 32% for the NB and LPB diets, respectively. With the reduction in CP content, there was a decrease (P < 0.001) in the amount of N retained. The N:P ratio in manure of pigs fed the LPB diets was greater (P < 0.001) than from pigs fed the NB diets. These data indicate that P and N excretion can be greatly reduced by substitution of NB by LPB, and also by the reduction of the CP content, in diets for growing pigs.
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Affiliation(s)
- J K Htoo
- Department of Agricultural, Food and Nutritional Science, University of Alberta, Edmonton, AB, Canada T6G 2P5
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Veum TL, Ledoux DR, Raboy V. Low-phytate barley cultivars improve the utilization of phosphorus, calcium, nitrogen, energy, and dry matter in diets fed to young swine. J Anim Sci 2006; 85:961-71. [PMID: 17178809 DOI: 10.2527/jas.2006-453] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A 28-d experiment was conducted using 45 crossbred barrows with an average initial BW of 9.5 kg and age of 35 d to evaluate low-phytate barley (LPB) mutants (M) M422, M635, and M955, which were hulled, near-isogenic progeny of the normal barley (NB) Harrington and had 47, 66, and 80% less phytic acid, respectively, than NB. A hull-less LPB, M422-H, which was not near-isogenic to the other cultivars, was also evaluated. Apparent nutrient balance, bone measurements, and growth performance were the response criteria evaluated. The barrows were fed the diets to appetite in meal form in individual metabolism crates. Barley and soybean meal were the only sources of phytic acid. Dietary protein supplementation and ME/kg were equalized in all diets. The treatments were diets containing NB, M422, M635, or M422-H without or with added inorganic P (iP), or M955 without added iP. Diets with added iP contained 0.30% available P (aP), the same concentration of aP provided by the diet containing M955 without added iP. There were linear increases (P < or = 0.02) in ADG, G:F, metacarpal and radius bone strength, and fat-free dry weight, and in the absorption and retention (g/d and % of intake) of P and Ca with increasing dietary concentration of aP from the near-isogenic cultivars NB, M422, M635, or M955 without added iP. There were linear decreases in the grams (P < or = 0.02) and percentages (P < 0.001) of P and Ca excreted per day with increasing dietary concentration of aP without added iP. There were no responses for N or energy balance. Growth performance and bone response criteria did not differ for barrows fed the diet containing M955 or the near-isogenic diets containing NB, M422, or M635 with added iP. However, barrows fed the diet containing M955 had greater (P < or = 0.02) percentages of P, N, and energy absorption and retention, Ca absorption, and DM digestibility and had less (P < or = 0.02, g/d and %) excretion of P, N, energy, and Ca (g) per day than barrows fed the diets containing the near-isogenic NB or LPB cultivars with added iP. When dietary aP was equalized with iP, the excretion of P in feces plus urine (g/d) was reduced by 20.2, 27.9, and 44.6%, respectively, in barrows fed the diets containing M422 + iP, M635 + iP, or M955 compared with barrows fed the diet containing NB + iP. Energy utilization did not differ for barrows fed the diets containing hulled or hull-less LPB when ME/kg was equalized with lard. In conclusion, the apparent utilization of P and Ca, the bone strength and fat-free dry weight, and growth performance increased with increasing dietary concentration of aP provided by LPB, in association with linear decreases in P and Ca excretion. Barrows fed the diet containing M955 also had greater utilization and less excretion of P, Ca, N, energy, and DM than barrows fed the diets containing the near-isogenic NB or LPB cultivars with added iP to equalize aP at 0.30%.
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Affiliation(s)
- T L Veum
- Department of Animal Sciences, University of Missouri, Columbia 65211, USA.
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Bregitzer P, Raboy V. Effects of Four Independent Low-Phytate Mutations in Barley (Hordeum vulgareL.) on Seed Phosphorus Characteristics and Malting Quality. Cereal Chem 2006. [DOI: 10.1094/cc-83-0460] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Phil Bregitzer
- National Small Grains Germplasm Research Facility, Agricultural Research Service, United States Department of Agriculture, 1691 S. 2700 W., Aberdeen, ID 83210. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and the use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable
- Corresponding author. E-mail:
| | - Victor Raboy
- National Small Grains Germplasm Research Facility, Agricultural Research Service, United States Department of Agriculture, 1691 S. 2700 W., Aberdeen, ID 83210. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and the use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable
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Rodehutscord M, Dieckmann A. Comparative studies with three-week-old chickens, turkeys, ducks, and quails on the response in phosphorus utilization to a supplementation of monobasic calcium phosphate. Poult Sci 2005; 84:1252-60. [PMID: 16156209 DOI: 10.1093/ps/84.8.1252] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We studied whether the availability of P is different among poultry species. A basal diet was mixed mainly based on corn, potato protein, and dried egg white. It was calculated according to the recommendations for young turkeys with the exception of P and Ca concentrations, which were deficient. Monobasic calcium phosphate (MCP) was added in graded levels, and analyzed P concentrations in the 7 diets were (in g/kg of dry matter) 2.9, 3.7, 4.5, 5.3, 6.2, 7.2, and 7.7. Four experiments were conducted with 3-wk-old broiler chickens, turkeys, ducks, and quails. Birds were kept in balance crates, and 8 individuals were allocated to each treatment diet. Birds were fed the treatment diets for 10 d, and excreta were quantitatively collected during the last 5 d. P utilization was calculated as the proportion of P intake that was accreted by the birds. The P accretion response of birds to incremental MCP intake was described with sigmoidal functions, and the marginal efficiency of P utilization ((delta)y/(delta)x) was calculated. Utilization of P from the unsupplemented basal diet was 58% in broilers, 55% in quails, 46% in ducks, and 39% in turkeys. Supplementation of MCP significantly increased P accretion in all species. Ninety-five percent of the estimated ymax in P accretion was achieved with 8.4, 7.3, and 4.8 g P/kg of dietary DM in broilers, ducks, and quails. No plateau in P accretion was achieved in turkeys. These differences correlate well with the differences in the feed/gain ratio, which was 1.3 in turkeys, 1.7 in broilers, 1.9 in ducks, and 3.5 in quails. The maximum in marginal efficiency of supplemented P was 96% in ducks, 81% in turkeys, 74% in broilers, and 77% in quails. These maxima were achieved at different levels of MCP supplementation. We concluded that differences in P availability exist between poultry species for plant and mineral P sources. Quails can be used as model species for broilers in P availability studies, but dietary P levels need special adjustment.
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Affiliation(s)
- M Rodehutscord
- Institut für Ernährungswissenschaften, Universität Halle-Wittenberg, 06099 Halle, Germany.
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Jang DA, Fadel JG, Klasing KC, Mireles AJ, Ernst RA, Young KA, Cook A, Raboy V. Evaluation of low-phytate corn and barley on broiler chick performance. Poult Sci 2003; 82:1914-24. [PMID: 14717549 DOI: 10.1093/ps/82.12.1914] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Grains produced by low-phytate barley and corn isolines homozygous for each species' respective low phytic acid 1-1 allele were compared to grain produced by near-isogenic normal or wild-type barley and corn in broiler chick feeds. Cobb x Cobb (384) chicks were used in a 10-d study. A randomized complete block design with a factorial arrangement of 2 x 2 x 3 was used with 4 replicates (8 chicks / replicate) per treatment. Twelve isocaloric and isonitrogenous treatment diets were formulated to contain 2 types of grain (barley and corn), 2 levels of grain (40% and 60%), and 3 sources of available P (wild-type grain, wild-type P-supplemented grain, and low-phytate grain). Growth parameters, bone parameters, total bone mineral, and apparent digestibilities were measured. The mean growth and bone responses were 1) higher for barley diets compared to corn diets, 2) higher for 60% grain inclusion compared to 40%, 3) higher for low-phytate compared to wild-type grains, and 4) not different for low-phytate compared to P-supplemented wild-type grain diets. Chicks fed low-phytate-based diets excreted 33 and 43% less P than chicks fed wild-type and P-supplemented wild-type diets, respectively. Correlations between percentage bone ash, total bone ash, and bone strength indicated a strong relationship and appear to support the use of bone strength analysis as a simpler method than ash content determination as an indication of P status. Feeding low-phytate grains will reduce the need for supplemental P in chick diets.
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Affiliation(s)
- D A Jang
- Department of Animal Science, University of California, Davis, California 95616-8521, USA
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Simoyi MF, Klandorf H. Fructose and its effect on turkey plasma uric acid levels and productive performance. Poult Sci 2003; 82:478-83. [PMID: 12705410 DOI: 10.1093/ps/82.3.478] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Previous studies have shown that addition of fructose to the diet of broilers raises plasma uric acid (PUA) concentration and improves productive performance. The purpose of this experiment was to establish the effect of feeding fructose on turkey PUA concentration and productive performance. Turkey poults (n = 64) were weighed and randomly assigned to diets containing 0 (control), 5, 10, and 15% fructose with four replicates of four poults each per treatment. All diets were isocaloric and isonitrogenous. Feed and water were offered ad libitum for 14 wk. Body weights were measured biweekly throughout the study, and blood samples were drawn from wk 8 to 10 for determination of PUA concentration, leukocyte oxidative activity (LOA), and differential leukocyte counts. Relative liver size (g/kg BW) was also determined. The heaviest body weights were recorded from turkeys fed 10% fructose diet (P < 0.05). Supplemental fructose had no effect on the feed to gain ratio, relative liver size, or PUA concentrations. LOA increased in poults fed the 15% fructose diet. Turkeys fed 10 and 15% fructose diets had higher monocyte and lower polymorphonuclear lymphocyte counts (P < 0.05) compared to those fed control and 5% fructose diets. Feeding fructose to turkeys at 10% of the diet improved productive performance. However, dietary fructose had no effect on PUA or, consequently, LOA.
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Affiliation(s)
- M F Simoyi
- Division of Animal & Veterinary Sciences, West Virginia University, Morgantown, West Virginia 26506-6108, USA
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Veum TL, Ledoux DR, Bollinger DW, Raboy V, Cook A. Low-phytic acid barley improves calcium and phosphorus utilization and growth performance in growing pigs1. J Anim Sci 2002. [DOI: 10.1093/ansci/80.10.2663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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