Effects of weaning period length on growth and health of preconditioned, spring-born beef calves originating from the Great Plains. I. Conventional weaning ages 1 1 Contribution no. 14-345-J from the Kansas Agricultural Experiment Station
Spring-born Angus×Hereford calves (n=433; average initial weight=229±37kg) were assigned randomly to treatments that corresponded to a length of time (d) between separation from their dam and transport to a feedlot: 60, 45, 30, 15, or 0 d. Weaning date varied by treatment; transport occurred on a co...
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| Veröffentlicht in: | The Professional animal scientist 2015-02, Vol.31 (1), p.20 |
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| creator | Bailey, E.A Jaeger, J.R Schmidt, T.B Waggoner, J.W Pacheco, L.A Thomson, D.U Olson, K.C |
| description | Spring-born Angus×Hereford calves (n=433; average initial weight=229±37kg) were assigned randomly to treatments that corresponded to a length of time (d) between separation from their dam and transport to a feedlot: 60, 45, 30, 15, or 0 d. Weaning date varied by treatment; transport occurred on a common date and at a common age (220±22 d) for all treatments. Calves were vaccinated against common diseases 14 d before maternal separation and again on the day of maternal separation. Calves were transported |
| doi_str_mv | 10.15232/pas.2014-01348 |
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I. Conventional weaning ages 1 1 Contribution no. 14-345-J from the Kansas Agricultural Experiment Station</title><source>Alma/SFX Local Collection</source><creator>Bailey, E.A ; Jaeger, J.R ; Schmidt, T.B ; Waggoner, J.W ; Pacheco, L.A ; Thomson, D.U ; Olson, K.C</creator><creatorcontrib>Bailey, E.A ; Jaeger, J.R ; Schmidt, T.B ; Waggoner, J.W ; Pacheco, L.A ; Thomson, D.U ; Olson, K.C</creatorcontrib><description>Spring-born Angus×Hereford calves (n=433; average initial weight=229±37kg) were assigned randomly to treatments that corresponded to a length of time (d) between separation from their dam and transport to a feedlot: 60, 45, 30, 15, or 0 d. Weaning date varied by treatment; transport occurred on a common date and at a common age (220±22 d) for all treatments. Calves were vaccinated against common diseases 14 d before maternal separation and again on the day of maternal separation. Calves were transported <20km to a ranch-of-origin weaning facility following separation from dams and penned according to treatment. Calves were fed a complete diet (16.9% CP, 1.21 Mcal of NEg/kg). On a common date, all calves were transported 4h to a commercial auction market and held for 14h. They were subsequently transported 1h to a feedlot. Unweaned calves weighed less (P=0.02) at transport than weaned calves. Morbidity during the ranch-of-origin weaning period increased quadratically (P=0.01) as length of the weaning period increased. Transport shrink and receiving morbidity were greater (P=0.01) in unweaned calves than in weaned calves. Calf BW at the end of receiving was greater (P=0.01) for weaned than unweaned calves and increased linearly (P=0.01) as weaning-period length increased. Calf ADG during receiving and finishing were not affected (P≥0.30) by treatment. Preslaughter BW and HCW tended (P=0.07) to be greater in weaned calves than in unweaned calves but were not different (P≥0.11) among calves weaned for 15, 30, 45, or 60 d before transport. Days on feed decreased linearly (P=0.01) as length of the pretransport weaning period increased. Conversely, KPH, 12th-rib fat thickness, and USDA YG increased linearly (P<=0.05) as pretransport weaning period length increased. Cow BCS change from 60 d before to 60 d after transport of calves increased linearly (P=0.01) as weaning-period length increased. Cows suckling calves weaned immediately before transport had lesser (P=0.03) pregnancy rates than cows suckling calves weaned before transport; moreover, pregnancy rate tended to increase linearly (P=0.09) as the length of preconditioning increased. Under the conditions of our experiment, pretransport weaning periods ≥15 d improved the health and performance of calves during feedlot receiving.</description><identifier>ISSN: 1080-7446</identifier><identifier>EISSN: 1525-318X</identifier><identifier>DOI: 10.15232/pas.2014-01348</identifier><language>eng</language><publisher>Champaign: American Registry of Professional Animal Scientists</publisher><ispartof>The Professional animal scientist, 2015-02, Vol.31 (1), p.20</ispartof><rights>2010 American Registry of Professional Animal Scientists</rights><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27922,27923</link.rule.ids></links><search><creatorcontrib>Bailey, E.A</creatorcontrib><creatorcontrib>Jaeger, J.R</creatorcontrib><creatorcontrib>Schmidt, T.B</creatorcontrib><creatorcontrib>Waggoner, J.W</creatorcontrib><creatorcontrib>Pacheco, L.A</creatorcontrib><creatorcontrib>Thomson, D.U</creatorcontrib><creatorcontrib>Olson, K.C</creatorcontrib><title>Effects of weaning period length on growth and health of preconditioned, spring-born beef calves originating from the Great Plains. I. Conventional weaning ages 1 1 Contribution no. 14-345-J from the Kansas Agricultural Experiment Station</title><title>The Professional animal scientist</title><description>Spring-born Angus×Hereford calves (n=433; average initial weight=229±37kg) were assigned randomly to treatments that corresponded to a length of time (d) between separation from their dam and transport to a feedlot: 60, 45, 30, 15, or 0 d. Weaning date varied by treatment; transport occurred on a common date and at a common age (220±22 d) for all treatments. Calves were vaccinated against common diseases 14 d before maternal separation and again on the day of maternal separation. Calves were transported <20km to a ranch-of-origin weaning facility following separation from dams and penned according to treatment. Calves were fed a complete diet (16.9% CP, 1.21 Mcal of NEg/kg). On a common date, all calves were transported 4h to a commercial auction market and held for 14h. They were subsequently transported 1h to a feedlot. Unweaned calves weighed less (P=0.02) at transport than weaned calves. Morbidity during the ranch-of-origin weaning period increased quadratically (P=0.01) as length of the weaning period increased. Transport shrink and receiving morbidity were greater (P=0.01) in unweaned calves than in weaned calves. Calf BW at the end of receiving was greater (P=0.01) for weaned than unweaned calves and increased linearly (P=0.01) as weaning-period length increased. Calf ADG during receiving and finishing were not affected (P≥0.30) by treatment. Preslaughter BW and HCW tended (P=0.07) to be greater in weaned calves than in unweaned calves but were not different (P≥0.11) among calves weaned for 15, 30, 45, or 60 d before transport. Days on feed decreased linearly (P=0.01) as length of the pretransport weaning period increased. Conversely, KPH, 12th-rib fat thickness, and USDA YG increased linearly (P<=0.05) as pretransport weaning period length increased. Cow BCS change from 60 d before to 60 d after transport of calves increased linearly (P=0.01) as weaning-period length increased. Cows suckling calves weaned immediately before transport had lesser (P=0.03) pregnancy rates than cows suckling calves weaned before transport; moreover, pregnancy rate tended to increase linearly (P=0.09) as the length of preconditioning increased. Under the conditions of our experiment, pretransport weaning periods ≥15 d improved the health and performance of calves during feedlot receiving.</description><issn>1080-7446</issn><issn>1525-318X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqNkMlOxDAMhiMEEsNy5mpxpiXpMssRjYb1ggQHbiO3dTpBnaQ46QxPzTOQSgiuyAdbv_1_si3EhZKpKrM8u-7Rp5lURSJVXswPxCTKZZKr-dthrOVcJrOimB6LE-_fpcxUtphNxNdKa6qDB6dhT2iNbaEnNq6BjmwbNuAstOz2sULbwIawG0UNPVPtbGOCcZaaK_A9R3NSObZQEWmosdtRBLNpjcUwkjW7LYQNwR0TBnju0FifwkMKS2d3ZEcWdr-LYBv9KkbsBjbVMPbBuhTilXlRJo9_xCe0Hj3ctGzqoQsDR87qczxlG7nwEnA0n4kjjZ2n8598Ki5vV6_L-6Rn9zGQD2um3nHwazWLTy3LxTTL_zX0DQHafSg</recordid><startdate>20150201</startdate><enddate>20150201</enddate><creator>Bailey, E.A</creator><creator>Jaeger, J.R</creator><creator>Schmidt, T.B</creator><creator>Waggoner, J.W</creator><creator>Pacheco, L.A</creator><creator>Thomson, D.U</creator><creator>Olson, K.C</creator><general>American Registry of Professional Animal Scientists</general><scope>4T-</scope><scope>7QG</scope><scope>7ST</scope><scope>C1K</scope><scope>SOI</scope></search><sort><creationdate>20150201</creationdate><title>Effects of weaning period length on growth and health of preconditioned, spring-born beef calves originating from the Great Plains. I. Conventional weaning ages 1 1 Contribution no. 14-345-J from the Kansas Agricultural Experiment Station</title><author>Bailey, E.A ; Jaeger, J.R ; Schmidt, T.B ; Waggoner, J.W ; Pacheco, L.A ; Thomson, D.U ; Olson, K.C</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-proquest_reports_17523559623</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><toplevel>online_resources</toplevel><creatorcontrib>Bailey, E.A</creatorcontrib><creatorcontrib>Jaeger, J.R</creatorcontrib><creatorcontrib>Schmidt, T.B</creatorcontrib><creatorcontrib>Waggoner, J.W</creatorcontrib><creatorcontrib>Pacheco, L.A</creatorcontrib><creatorcontrib>Thomson, D.U</creatorcontrib><creatorcontrib>Olson, K.C</creatorcontrib><collection>Docstoc</collection><collection>Animal Behavior Abstracts</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><jtitle>The Professional animal scientist</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bailey, E.A</au><au>Jaeger, J.R</au><au>Schmidt, T.B</au><au>Waggoner, J.W</au><au>Pacheco, L.A</au><au>Thomson, D.U</au><au>Olson, K.C</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of weaning period length on growth and health of preconditioned, spring-born beef calves originating from the Great Plains. I. Conventional weaning ages 1 1 Contribution no. 14-345-J from the Kansas Agricultural Experiment Station</atitle><jtitle>The Professional animal scientist</jtitle><date>2015-02-01</date><risdate>2015</risdate><volume>31</volume><issue>1</issue><spage>20</spage><pages>20-</pages><issn>1080-7446</issn><eissn>1525-318X</eissn><abstract>Spring-born Angus×Hereford calves (n=433; average initial weight=229±37kg) were assigned randomly to treatments that corresponded to a length of time (d) between separation from their dam and transport to a feedlot: 60, 45, 30, 15, or 0 d. Weaning date varied by treatment; transport occurred on a common date and at a common age (220±22 d) for all treatments. Calves were vaccinated against common diseases 14 d before maternal separation and again on the day of maternal separation. Calves were transported <20km to a ranch-of-origin weaning facility following separation from dams and penned according to treatment. Calves were fed a complete diet (16.9% CP, 1.21 Mcal of NEg/kg). On a common date, all calves were transported 4h to a commercial auction market and held for 14h. They were subsequently transported 1h to a feedlot. Unweaned calves weighed less (P=0.02) at transport than weaned calves. Morbidity during the ranch-of-origin weaning period increased quadratically (P=0.01) as length of the weaning period increased. Transport shrink and receiving morbidity were greater (P=0.01) in unweaned calves than in weaned calves. Calf BW at the end of receiving was greater (P=0.01) for weaned than unweaned calves and increased linearly (P=0.01) as weaning-period length increased. Calf ADG during receiving and finishing were not affected (P≥0.30) by treatment. Preslaughter BW and HCW tended (P=0.07) to be greater in weaned calves than in unweaned calves but were not different (P≥0.11) among calves weaned for 15, 30, 45, or 60 d before transport. Days on feed decreased linearly (P=0.01) as length of the pretransport weaning period increased. Conversely, KPH, 12th-rib fat thickness, and USDA YG increased linearly (P<=0.05) as pretransport weaning period length increased. Cow BCS change from 60 d before to 60 d after transport of calves increased linearly (P=0.01) as weaning-period length increased. Cows suckling calves weaned immediately before transport had lesser (P=0.03) pregnancy rates than cows suckling calves weaned before transport; moreover, pregnancy rate tended to increase linearly (P=0.09) as the length of preconditioning increased. Under the conditions of our experiment, pretransport weaning periods ≥15 d improved the health and performance of calves during feedlot receiving.</abstract><cop>Champaign</cop><pub>American Registry of Professional Animal Scientists</pub><doi>10.15232/pas.2014-01348</doi></addata></record> |
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| title | Effects of weaning period length on growth and health of preconditioned, spring-born beef calves originating from the Great Plains. I. Conventional weaning ages 1 1 Contribution no. 14-345-J from the Kansas Agricultural Experiment Station |
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