Effect of feeding sun-dried seaweed ( Ascophyllum nodosum) on fecal shedding of Escherichia coli O157:H7 by feedlot cattle and on growth performance of lambs
Thirty-two steers orally inoculated with a four-strain mixture (10 10 CFU) of nalidixic acid-resistant Escherichia coli O157:H7 had sun-dried Ascophyllum nodosum seaweed (Tasco-14™) added to their barley-based diet (860 g/kg barley grain and 90 g/kg whole crop barley silage, dry matter basis) to ass...
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| creator | Bach, S.J. Wang, Y. McAllister, T.A. |
| description | Thirty-two steers orally inoculated with a four-strain mixture (10
10 CFU) of nalidixic acid-resistant
Escherichia coli O157:H7 had sun-dried
Ascophyllum nodosum seaweed (Tasco-14™) added to their barley-based diet (860
g/kg barley grain and 90
g/kg whole crop barley silage, dry matter basis) to assess its effectiveness in reducing fecal shedding of the pathogen. Steers were housed in four groups of eight and received Tasco-14™ in the diet, in place of barley, at levels (as fed) of 10
g/kg for 14 days (T1-14), 20
g/kg for 7 days (T2-7), 20
g/kg for 14 days (T2-14), or not at all (
i.e., control, CON). The dietary treatments commenced 7 days after
E. coli O157:H7 inoculation and fecal shedding patterns were examined over 14 weeks. Water, water–trough interface, feed and fecal pat samples were also collected weekly and cultured for
E. coli O157:H7. Detection of the pathogen in fecal samples was less frequent (P |
| doi_str_mv | 10.1016/j.anifeedsci.2007.05.033 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_miscellaneous_20262357</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><els_id>S0377840107002143</els_id><sourcerecordid>20262357</sourcerecordid><originalsourceid>FETCH-LOGICAL-c303t-837278912228fa9b4267892756819d3e8d18eab4f1894517b34e5aac1053875f3</originalsourceid><addsrcrecordid>eNqFkU-P1CAYh4nRxHH1M8jJ6KGVP21hvK2bcddkkz3ongmFlykTWkZo3cyH8btKZzbx6IlAfr_nBR6EMCU1JbT7fKj15B2AzcbXjBBRk7YmnL9AGyoFrxij3Uu0IVyISjaEvkZvcj4QQpnkbIP-7JwDM-Po8Arx0x7nZaps8mBxBv1UDvFHfJ1NPA6nEJYRT9HGvIyfcJxKx-iA8wD2XC2UXTYDJG8Gr7GJweMH2oovdwL3p_OEEGds9DwHwHqyK2Of4tM84CMkF9OoJwMrJ-ixz2_RK6dDhnfP6xV6_Lb7eXNX3T_cfr-5vq8MJ3yuJBdMyC1ljEmnt33DurJlou0k3VoO0lIJum8cldumpaLnDbRaG0paLkXr-BX6cOEeU_y1QJ7V6LOBEPQEccmKEdYx3ooSlJegSTHnBE4dkx91OilK1OpDHdQ_H2r1oUirio9SfX-pOh2V3ief1eMPRignRJbbnhNfLwkoT_3tIanCgPIf1qfiSNno_z_mLyciogE</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>20262357</pqid></control><display><type>article</type><title>Effect of feeding sun-dried seaweed ( Ascophyllum nodosum) on fecal shedding of Escherichia coli O157:H7 by feedlot cattle and on growth performance of lambs</title><source>Elsevier ScienceDirect Journals</source><creator>Bach, S.J. ; Wang, Y. ; McAllister, T.A.</creator><creatorcontrib>Bach, S.J. ; Wang, Y. ; McAllister, T.A.</creatorcontrib><description>Thirty-two steers orally inoculated with a four-strain mixture (10
10 CFU) of nalidixic acid-resistant
Escherichia coli O157:H7 had sun-dried
Ascophyllum nodosum seaweed (Tasco-14™) added to their barley-based diet (860
g/kg barley grain and 90
g/kg whole crop barley silage, dry matter basis) to assess its effectiveness in reducing fecal shedding of the pathogen. Steers were housed in four groups of eight and received Tasco-14™ in the diet, in place of barley, at levels (as fed) of 10
g/kg for 14 days (T1-14), 20
g/kg for 7 days (T2-7), 20
g/kg for 14 days (T2-14), or not at all (
i.e., control, CON). The dietary treatments commenced 7 days after
E. coli O157:H7 inoculation and fecal shedding patterns were examined over 14 weeks. Water, water–trough interface, feed and fecal pat samples were also collected weekly and cultured for
E. coli O157:H7. Detection of the pathogen in fecal samples was less frequent (P<0.05) in T1-14 (99/168) and T2-7 (84/168)
versus CON (135/168) and T2-14 (115/168), and the concentrations of
E. coli O157:H7 recovered in feces from T1-14 and T2-7 steers were lower (P<0.005) than from CON or T2-14 steers. Rates of decline in shedding of
E. coli O157:H7 were similar among treatments, but final numbers of
E. coli O157:H7 were lower (P<0.05) in T1-14 and T2-7 as compared to T2-14 and CON. Fecal volatile fatty acid concentrations and pH were similar among treatments, suggesting no fecal alterations that were antagonistic to survival.
E. coli O157:H7 was present in 1 (from T2-7) of 56 cattle drinking water samples, 2 of 56 (T1-14, CON) feed samples and 32 of 56 fecal pats. A second experiment investigated effects of the dietary treatment on growth performance of non-inoculated sheep. Tasco-14™ was administered to 40 individually fed Canadian Arcott lambs beginning at day 56 of a 105-day finishing period. The lambs received Tasco-14™ at 0
g/kg (control, CON), at 10
g/kg for 14 days (T1-14), 20
g/kg for 14 days (T2-14), 10
g/kg for 28 days (T1-28) or at 20
g/kg for 7 days (T2-7) as a top-dress on their pelleted, barley grain-based diet (
n
=
8).
E. coli O157:H7 was not isolated from fecal samples collected at 4-week intervals, but generic
E. coli populations were lower (P<0.05) in T1-28 lambs than in other treatments. Average daily gain, feed intake, feed efficiency and carcass traits did not differ among treatments. Our challenge study supports past studies showing that Tasco-14™ decreases shedding of
E. coli O157:H7 by cattle. The lamb study shows that this additive did not directly affect feed intake or animal growth.</description><identifier>ISSN: 0377-8401</identifier><identifier>EISSN: 1873-2216</identifier><identifier>DOI: 10.1016/j.anifeedsci.2007.05.033</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>animal growth ; Ascophyllum nodosum ; bacterial colonization ; beef cattle ; biomarkers ; Cattle ; cattle feeding ; E. coli O157:H7 ; Escherichia coli ; Escherichia coli O157:H7 ; feces ; feed processing ; feed supplements ; finishing ; food pathogens ; Hordeum vulgare ; intestinal microorganisms ; lamb feeding ; lambs ; liveweight gain ; macroalgae ; nutritive value ; pathogen shedding ; protective effect ; Seaweed ; Sheep ; solar drying ; steers ; Tasco-14</subject><ispartof>Animal feed science and technology, 2008-04, Vol.142 (1), p.17-32</ispartof><rights>2007</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c303t-837278912228fa9b4267892756819d3e8d18eab4f1894517b34e5aac1053875f3</citedby><cites>FETCH-LOGICAL-c303t-837278912228fa9b4267892756819d3e8d18eab4f1894517b34e5aac1053875f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0377840107002143$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Bach, S.J.</creatorcontrib><creatorcontrib>Wang, Y.</creatorcontrib><creatorcontrib>McAllister, T.A.</creatorcontrib><title>Effect of feeding sun-dried seaweed ( Ascophyllum nodosum) on fecal shedding of Escherichia coli O157:H7 by feedlot cattle and on growth performance of lambs</title><title>Animal feed science and technology</title><description>Thirty-two steers orally inoculated with a four-strain mixture (10
10 CFU) of nalidixic acid-resistant
Escherichia coli O157:H7 had sun-dried
Ascophyllum nodosum seaweed (Tasco-14™) added to their barley-based diet (860
g/kg barley grain and 90
g/kg whole crop barley silage, dry matter basis) to assess its effectiveness in reducing fecal shedding of the pathogen. Steers were housed in four groups of eight and received Tasco-14™ in the diet, in place of barley, at levels (as fed) of 10
g/kg for 14 days (T1-14), 20
g/kg for 7 days (T2-7), 20
g/kg for 14 days (T2-14), or not at all (
i.e., control, CON). The dietary treatments commenced 7 days after
E. coli O157:H7 inoculation and fecal shedding patterns were examined over 14 weeks. Water, water–trough interface, feed and fecal pat samples were also collected weekly and cultured for
E. coli O157:H7. Detection of the pathogen in fecal samples was less frequent (P<0.05) in T1-14 (99/168) and T2-7 (84/168)
versus CON (135/168) and T2-14 (115/168), and the concentrations of
E. coli O157:H7 recovered in feces from T1-14 and T2-7 steers were lower (P<0.005) than from CON or T2-14 steers. Rates of decline in shedding of
E. coli O157:H7 were similar among treatments, but final numbers of
E. coli O157:H7 were lower (P<0.05) in T1-14 and T2-7 as compared to T2-14 and CON. Fecal volatile fatty acid concentrations and pH were similar among treatments, suggesting no fecal alterations that were antagonistic to survival.
E. coli O157:H7 was present in 1 (from T2-7) of 56 cattle drinking water samples, 2 of 56 (T1-14, CON) feed samples and 32 of 56 fecal pats. A second experiment investigated effects of the dietary treatment on growth performance of non-inoculated sheep. Tasco-14™ was administered to 40 individually fed Canadian Arcott lambs beginning at day 56 of a 105-day finishing period. The lambs received Tasco-14™ at 0
g/kg (control, CON), at 10
g/kg for 14 days (T1-14), 20
g/kg for 14 days (T2-14), 10
g/kg for 28 days (T1-28) or at 20
g/kg for 7 days (T2-7) as a top-dress on their pelleted, barley grain-based diet (
n
=
8).
E. coli O157:H7 was not isolated from fecal samples collected at 4-week intervals, but generic
E. coli populations were lower (P<0.05) in T1-28 lambs than in other treatments. Average daily gain, feed intake, feed efficiency and carcass traits did not differ among treatments. Our challenge study supports past studies showing that Tasco-14™ decreases shedding of
E. coli O157:H7 by cattle. The lamb study shows that this additive did not directly affect feed intake or animal growth.</description><subject>animal growth</subject><subject>Ascophyllum nodosum</subject><subject>bacterial colonization</subject><subject>beef cattle</subject><subject>biomarkers</subject><subject>Cattle</subject><subject>cattle feeding</subject><subject>E. coli O157:H7</subject><subject>Escherichia coli</subject><subject>Escherichia coli O157:H7</subject><subject>feces</subject><subject>feed processing</subject><subject>feed supplements</subject><subject>finishing</subject><subject>food pathogens</subject><subject>Hordeum vulgare</subject><subject>intestinal microorganisms</subject><subject>lamb feeding</subject><subject>lambs</subject><subject>liveweight gain</subject><subject>macroalgae</subject><subject>nutritive value</subject><subject>pathogen shedding</subject><subject>protective effect</subject><subject>Seaweed</subject><subject>Sheep</subject><subject>solar drying</subject><subject>steers</subject><subject>Tasco-14</subject><issn>0377-8401</issn><issn>1873-2216</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqFkU-P1CAYh4nRxHH1M8jJ6KGVP21hvK2bcddkkz3ongmFlykTWkZo3cyH8btKZzbx6IlAfr_nBR6EMCU1JbT7fKj15B2AzcbXjBBRk7YmnL9AGyoFrxij3Uu0IVyISjaEvkZvcj4QQpnkbIP-7JwDM-Po8Arx0x7nZaps8mBxBv1UDvFHfJ1NPA6nEJYRT9HGvIyfcJxKx-iA8wD2XC2UXTYDJG8Gr7GJweMH2oovdwL3p_OEEGds9DwHwHqyK2Of4tM84CMkF9OoJwMrJ-ixz2_RK6dDhnfP6xV6_Lb7eXNX3T_cfr-5vq8MJ3yuJBdMyC1ljEmnt33DurJlou0k3VoO0lIJum8cldumpaLnDbRaG0paLkXr-BX6cOEeU_y1QJ7V6LOBEPQEccmKEdYx3ooSlJegSTHnBE4dkx91OilK1OpDHdQ_H2r1oUirio9SfX-pOh2V3ief1eMPRignRJbbnhNfLwkoT_3tIanCgPIf1qfiSNno_z_mLyciogE</recordid><startdate>20080401</startdate><enddate>20080401</enddate><creator>Bach, S.J.</creator><creator>Wang, Y.</creator><creator>McAllister, T.A.</creator><general>Elsevier B.V</general><general>[New York, NY]: Elsevier Science</general><scope>FBQ</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QL</scope><scope>C1K</scope></search><sort><creationdate>20080401</creationdate><title>Effect of feeding sun-dried seaweed ( Ascophyllum nodosum) on fecal shedding of Escherichia coli O157:H7 by feedlot cattle and on growth performance of lambs</title><author>Bach, S.J. ; Wang, Y. ; McAllister, T.A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c303t-837278912228fa9b4267892756819d3e8d18eab4f1894517b34e5aac1053875f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>animal growth</topic><topic>Ascophyllum nodosum</topic><topic>bacterial colonization</topic><topic>beef cattle</topic><topic>biomarkers</topic><topic>Cattle</topic><topic>cattle feeding</topic><topic>E. coli O157:H7</topic><topic>Escherichia coli</topic><topic>Escherichia coli O157:H7</topic><topic>feces</topic><topic>feed processing</topic><topic>feed supplements</topic><topic>finishing</topic><topic>food pathogens</topic><topic>Hordeum vulgare</topic><topic>intestinal microorganisms</topic><topic>lamb feeding</topic><topic>lambs</topic><topic>liveweight gain</topic><topic>macroalgae</topic><topic>nutritive value</topic><topic>pathogen shedding</topic><topic>protective effect</topic><topic>Seaweed</topic><topic>Sheep</topic><topic>solar drying</topic><topic>steers</topic><topic>Tasco-14</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bach, S.J.</creatorcontrib><creatorcontrib>Wang, Y.</creatorcontrib><creatorcontrib>McAllister, T.A.</creatorcontrib><collection>AGRIS</collection><collection>CrossRef</collection><collection>Bacteriology Abstracts (Microbiology B)</collection><collection>Environmental Sciences and Pollution Management</collection><jtitle>Animal feed science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bach, S.J.</au><au>Wang, Y.</au><au>McAllister, T.A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of feeding sun-dried seaweed ( Ascophyllum nodosum) on fecal shedding of Escherichia coli O157:H7 by feedlot cattle and on growth performance of lambs</atitle><jtitle>Animal feed science and technology</jtitle><date>2008-04-01</date><risdate>2008</risdate><volume>142</volume><issue>1</issue><spage>17</spage><epage>32</epage><pages>17-32</pages><issn>0377-8401</issn><eissn>1873-2216</eissn><abstract>Thirty-two steers orally inoculated with a four-strain mixture (10
10 CFU) of nalidixic acid-resistant
Escherichia coli O157:H7 had sun-dried
Ascophyllum nodosum seaweed (Tasco-14™) added to their barley-based diet (860
g/kg barley grain and 90
g/kg whole crop barley silage, dry matter basis) to assess its effectiveness in reducing fecal shedding of the pathogen. Steers were housed in four groups of eight and received Tasco-14™ in the diet, in place of barley, at levels (as fed) of 10
g/kg for 14 days (T1-14), 20
g/kg for 7 days (T2-7), 20
g/kg for 14 days (T2-14), or not at all (
i.e., control, CON). The dietary treatments commenced 7 days after
E. coli O157:H7 inoculation and fecal shedding patterns were examined over 14 weeks. Water, water–trough interface, feed and fecal pat samples were also collected weekly and cultured for
E. coli O157:H7. Detection of the pathogen in fecal samples was less frequent (P<0.05) in T1-14 (99/168) and T2-7 (84/168)
versus CON (135/168) and T2-14 (115/168), and the concentrations of
E. coli O157:H7 recovered in feces from T1-14 and T2-7 steers were lower (P<0.005) than from CON or T2-14 steers. Rates of decline in shedding of
E. coli O157:H7 were similar among treatments, but final numbers of
E. coli O157:H7 were lower (P<0.05) in T1-14 and T2-7 as compared to T2-14 and CON. Fecal volatile fatty acid concentrations and pH were similar among treatments, suggesting no fecal alterations that were antagonistic to survival.
E. coli O157:H7 was present in 1 (from T2-7) of 56 cattle drinking water samples, 2 of 56 (T1-14, CON) feed samples and 32 of 56 fecal pats. A second experiment investigated effects of the dietary treatment on growth performance of non-inoculated sheep. Tasco-14™ was administered to 40 individually fed Canadian Arcott lambs beginning at day 56 of a 105-day finishing period. The lambs received Tasco-14™ at 0
g/kg (control, CON), at 10
g/kg for 14 days (T1-14), 20
g/kg for 14 days (T2-14), 10
g/kg for 28 days (T1-28) or at 20
g/kg for 7 days (T2-7) as a top-dress on their pelleted, barley grain-based diet (
n
=
8).
E. coli O157:H7 was not isolated from fecal samples collected at 4-week intervals, but generic
E. coli populations were lower (P<0.05) in T1-28 lambs than in other treatments. Average daily gain, feed intake, feed efficiency and carcass traits did not differ among treatments. Our challenge study supports past studies showing that Tasco-14™ decreases shedding of
E. coli O157:H7 by cattle. The lamb study shows that this additive did not directly affect feed intake or animal growth.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.anifeedsci.2007.05.033</doi><tpages>16</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0377-8401 |
| ispartof | Animal feed science and technology, 2008-04, Vol.142 (1), p.17-32 |
| issn | 0377-8401 1873-2216 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_20262357 |
| source | Elsevier ScienceDirect Journals |
| subjects | animal growth Ascophyllum nodosum bacterial colonization beef cattle biomarkers Cattle cattle feeding E. coli O157:H7 Escherichia coli Escherichia coli O157:H7 feces feed processing feed supplements finishing food pathogens Hordeum vulgare intestinal microorganisms lamb feeding lambs liveweight gain macroalgae nutritive value pathogen shedding protective effect Seaweed Sheep solar drying steers Tasco-14 |
| title | Effect of feeding sun-dried seaweed ( Ascophyllum nodosum) on fecal shedding of Escherichia coli O157:H7 by feedlot cattle and on growth performance of lambs |
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