Colostrum Quality Assessment in Dairy Goats: Use of an On-Farm Optical Refractometer
Failure of passive immunity transfer is one of the main causes of increased susceptibility to infectious agents in newborn kids. To ensure successful transfer of passive immunity, kids need to be fed high-quality colostrum, containing an adequate concentration of IgG. This work evaluated the quality...
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| Published in: | Biology (Basel, Switzerland) Vol. 12; no. 4; p. 626 |
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| Abstract | Failure of passive immunity transfer is one of the main causes of increased susceptibility to infectious agents in newborn kids. To ensure successful transfer of passive immunity, kids need to be fed high-quality colostrum, containing an adequate concentration of IgG. This work evaluated the quality of colostrum obtained in the first 3 days postpartum from Malagueña dairy goats. The IgG concentration in colostrum was measured using an ELISA as a reference method, and it was estimated by optical refractometer. Colostrum composition in terms of fat and protein was also determined. The mean concentration of IgG was 36.6 ± 2.3 mg/mL, 22.4 ± 1.5 mg/mL and 8.4 ± 1.0 mg/mL on days 1, 2 and 3 after parturition, respectively. Brix values obtained using the optical refractometer were 23.2%, 18.6% and 14.1% for days 1, 2 and 3, respectively. In this population, 89% of goats produced high-quality colostrum with IgG concentrations of >20 mg/mL on the day of parturition, but this percentage declined dramatically over the following 2 days. The quality of the fresh colostrum estimated with the optical refractometer was positively correlated with those obtained using ELISA (
= 0.607,
= 0.001). This study highlights the importance of feeding first-day colostrum to newborn kids and demonstrates that the optical Brix refractometer is suitable for the on-farm estimation of IgG content in colostrum. |
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| AbstractList | Failure of passive immunity transfer is one of the main causes of increased susceptibility to infectious agents in newborn kids. To ensure successful transfer of passive immunity, kids need to be fed high-quality colostrum, containing an adequate concentration of IgG. This work evaluated the quality of colostrum obtained in the first 3 days postpartum from Malagueña dairy goats. The IgG concentration in colostrum was measured using an ELISA as a reference method, and it was estimated by optical refractometer. Colostrum composition in terms of fat and protein was also determined. The mean concentration of IgG was 36.6 ± 2.3 mg/mL, 22.4 ± 1.5 mg/mL and 8.4 ± 1.0 mg/mL on days 1, 2 and 3 after parturition, respectively. Brix values obtained using the optical refractometer were 23.2%, 18.6% and 14.1% for days 1, 2 and 3, respectively. In this population, 89% of goats produced high-quality colostrum with IgG concentrations of >20 mg/mL on the day of parturition, but this percentage declined dramatically over the following 2 days. The quality of the fresh colostrum estimated with the optical refractometer was positively correlated with those obtained using ELISA (r = 0.607, p = 0.001). This study highlights the importance of feeding first-day colostrum to newborn kids and demonstrates that the optical Brix refractometer is suitable for the on-farm estimation of IgG content in colostrum. Failure of passive immunity transfer is one of the main causes of increased susceptibility to infectious agents in newborn kids. To ensure successful transfer of passive immunity, kids need to be fed high-quality colostrum, containing an adequate concentration of IgG. This work evaluated the quality of colostrum obtained in the first 3 days postpartum from Malagueña dairy goats. The IgG concentration in colostrum was measured using an ELISA as a reference method, and it was estimated by optical refractometer. Colostrum composition in terms of fat and protein was also determined. The mean concentration of IgG was 36.6 ± 2.3 mg/mL, 22.4 ± 1.5 mg/mL and 8.4 ± 1.0 mg/mL on days 1, 2 and 3 after parturition, respectively. Brix values obtained using the optical refractometer were 23.2%, 18.6% and 14.1% for days 1, 2 and 3, respectively. In this population, 89% of goats produced high-quality colostrum with IgG concentrations of >20 mg/mL on the day of parturition, but this percentage declined dramatically over the following 2 days. The quality of the fresh colostrum estimated with the optical refractometer was positively correlated with those obtained using ELISA ( = 0.607, = 0.001). This study highlights the importance of feeding first-day colostrum to newborn kids and demonstrates that the optical Brix refractometer is suitable for the on-farm estimation of IgG content in colostrum. Simple SummaryNewborn goat kids need to consume high-quality colostrum in the first hours after birth to ensure adequate transfer of passive immunity, through the absorption of immunoglobulins. However, some goats fail to produce high-quality colostrum, and tools for on-farm assessment of colostrum quality are needed. This work evaluated the quality of colostrum in Malagueña dairy goats, through measurement of immunoglobulin G (IgG), fat and protein concentrations in colostrum during the first 3 days after parturition. A handheld optical Brix refractometer, an instrument that is easy to use on the farm, was evaluated for accuracy to estimate colostrum quality. The optical Brix refractometer was found to be suitable for on-farm use to estimate the IgG content in the goat colostrum. AbstractFailure of passive immunity transfer is one of the main causes of increased susceptibility to infectious agents in newborn kids. To ensure successful transfer of passive immunity, kids need to be fed high-quality colostrum, containing an adequate concentration of IgG. This work evaluated the quality of colostrum obtained in the first 3 days postpartum from Malagueña dairy goats. The IgG concentration in colostrum was measured using an ELISA as a reference method, and it was estimated by optical refractometer. Colostrum composition in terms of fat and protein was also determined. The mean concentration of IgG was 36.6 ± 2.3 mg/mL, 22.4 ± 1.5 mg/mL and 8.4 ± 1.0 mg/mL on days 1, 2 and 3 after parturition, respectively. Brix values obtained using the optical refractometer were 23.2%, 18.6% and 14.1% for days 1, 2 and 3, respectively. In this population, 89% of goats produced high-quality colostrum with IgG concentrations of >20 mg/mL on the day of parturition, but this percentage declined dramatically over the following 2 days. The quality of the fresh colostrum estimated with the optical refractometer was positively correlated with those obtained using ELISA (r = 0.607, p = 0.001). This study highlights the importance of feeding first-day colostrum to newborn kids and demonstrates that the optical Brix refractometer is suitable for the on-farm estimation of IgG content in colostrum. Newborn goat kids need to consume high-quality colostrum in the first hours after birth to ensure adequate transfer of passive immunity, through the absorption of immunoglobulins. However, some goats fail to produce high-quality colostrum, and tools for on-farm assessment of colostrum quality are needed. This work evaluated the quality of colostrum in Malagueña dairy goats, through measurement of immunoglobulin G (IgG), fat and protein concentrations in colostrum during the first 3 days after parturition. A handheld optical Brix refractometer, an instrument that is easy to use on the farm, was evaluated for accuracy to estimate colostrum quality. The optical Brix refractometer was found to be suitable for on-farm use to estimate the IgG content in the goat colostrum. Failure of passive immunity transfer is one of the main causes of increased susceptibility to infectious agents in newborn kids. To ensure successful transfer of passive immunity, kids need to be fed high-quality colostrum, containing an adequate concentration of IgG. This work evaluated the quality of colostrum obtained in the first 3 days postpartum from Malagueña dairy goats. The IgG concentration in colostrum was measured using an ELISA as a reference method, and it was estimated by optical refractometer. Colostrum composition in terms of fat and protein was also determined. The mean concentration of IgG was 36.6 ± 2.3 mg/mL, 22.4 ± 1.5 mg/mL and 8.4 ± 1.0 mg/mL on days 1, 2 and 3 after parturition, respectively. Brix values obtained using the optical refractometer were 23.2%, 18.6% and 14.1% for days 1, 2 and 3, respectively. In this population, 89% of goats produced high-quality colostrum with IgG concentrations of >20 mg/mL on the day of parturition, but this percentage declined dramatically over the following 2 days. The quality of the fresh colostrum estimated with the optical refractometer was positively correlated with those obtained using ELISA (r = 0.607, p = 0.001). This study highlights the importance of feeding first-day colostrum to newborn kids and demonstrates that the optical Brix refractometer is suitable for the on-farm estimation of IgG content in colostrum. Newborn goat kids need to consume high-quality colostrum in the first hours after birth to ensure adequate transfer of passive immunity, through the absorption of immunoglobulins. However, some goats fail to produce high-quality colostrum, and tools for on-farm assessment of colostrum quality are needed. This work evaluated the quality of colostrum in Malagueña dairy goats, through measurement of immunoglobulin G (IgG), fat and protein concentrations in colostrum during the first 3 days after parturition. A handheld optical Brix refractometer, an instrument that is easy to use on the farm, was evaluated for accuracy to estimate colostrum quality. The optical Brix refractometer was found to be suitable for on-farm use to estimate the IgG content in the goat colostrum. |
| Audience | Academic |
| Author | Entrenas, José A Pérez-Marín, Carlos C Arrebola, Francisco A Cano, David Petrusha, Valerii H Pérez-Marín, Dolores C Skliarov, Pavlo M |
| AuthorAffiliation | 2 Instituto de Investigación y Formación Agraria y Pesquera (IFAPA), Carretera el Viso km 2, Hinojosa del Duque, 14270 Cordoba, Spain 1 Department of Animal Medicine and Surgery, Campus of Rabanales, University of Cordoba, 14071 Cordoba, Spain 3 Dnipro State Agrarian and Economic University, Serhii Yefremov Str. 25, 49600 Dnipro, Ukraine 4 Department of Animal Production, Campus of Rabanales, University of Cordoba, 14071 Cordoba, Spain |
| AuthorAffiliation_xml | – name: 4 Department of Animal Production, Campus of Rabanales, University of Cordoba, 14071 Cordoba, Spain – name: 1 Department of Animal Medicine and Surgery, Campus of Rabanales, University of Cordoba, 14071 Cordoba, Spain – name: 2 Instituto de Investigación y Formación Agraria y Pesquera (IFAPA), Carretera el Viso km 2, Hinojosa del Duque, 14270 Cordoba, Spain – name: 3 Dnipro State Agrarian and Economic University, Serhii Yefremov Str. 25, 49600 Dnipro, Ukraine |
| Author_xml | – sequence: 1 givenname: Carlos C orcidid: 0000-0002-9574-383X surname: Pérez-Marín fullname: Pérez-Marín, Carlos C organization: Department of Animal Medicine and Surgery, Campus of Rabanales, University of Cordoba, 14071 Cordoba, Spain – sequence: 2 givenname: David surname: Cano fullname: Cano, David organization: Department of Animal Medicine and Surgery, Campus of Rabanales, University of Cordoba, 14071 Cordoba, Spain – sequence: 3 givenname: Francisco A orcidid: 0000-0002-5571-7258 surname: Arrebola fullname: Arrebola, Francisco A organization: Instituto de Investigación y Formación Agraria y Pesquera (IFAPA), Carretera el Viso km 2, Hinojosa del Duque, 14270 Cordoba, Spain – sequence: 4 givenname: Valerii H surname: Petrusha fullname: Petrusha, Valerii H organization: Dnipro State Agrarian and Economic University, Serhii Yefremov Str. 25, 49600 Dnipro, Ukraine – sequence: 5 givenname: Pavlo M orcidid: 0000-0002-4379-9583 surname: Skliarov fullname: Skliarov, Pavlo M organization: Dnipro State Agrarian and Economic University, Serhii Yefremov Str. 25, 49600 Dnipro, Ukraine – sequence: 6 givenname: José A orcidid: 0000-0003-2251-5702 surname: Entrenas fullname: Entrenas, José A organization: Department of Animal Production, Campus of Rabanales, University of Cordoba, 14071 Cordoba, Spain – sequence: 7 givenname: Dolores C orcidid: 0000-0001-6629-4003 surname: Pérez-Marín fullname: Pérez-Marín, Dolores C organization: Department of Animal Production, Campus of Rabanales, University of Cordoba, 14071 Cordoba, Spain |
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| Cites_doi | 10.3168/jds.2013-6900 10.3168/jds.2008-1397 10.14202/vetworld.2021.3194-3199 10.3906/vet-1905-31 10.1007/s10875-012-9768-y 10.3389/fnut.2021.651721 10.1017/S0022029915000734 10.3168/jds.2020-18165 10.3168/jds.2012-5823 10.1016/j.smallrumres.2005.03.016 10.1017/S0022029902005575 10.1080/09712119.2018.1546585 10.1136/eb-2013-101243 10.3168/jds.2014-8415 10.3168/jds.2010-3193 10.1055/s-0041-1734019 10.1016/S0921-4488(02)00277-8 10.1016/j.smallrumres.2013.05.012 10.3168/jds.2018-16235 10.1080/09712119.2017.1394860 10.3168/jds.2013-6811 10.3168/jds.2014-8730 10.1016/j.smallrumres.2007.06.003 10.3168/jds.2009-2943 10.3168/jds.2020-19020 10.1016/S0167-5877(98)00107-X |
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| Keywords | Brix immunoglobulin G goat refractometer colostrum |
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| Snippet | Failure of passive immunity transfer is one of the main causes of increased susceptibility to infectious agents in newborn kids. To ensure successful transfer... Newborn goat kids need to consume high-quality colostrum in the first hours after birth to ensure adequate transfer of passive immunity, through the absorption... Simple SummaryNewborn goat kids need to consume high-quality colostrum in the first hours after birth to ensure adequate transfer of passive immunity, through... |
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| SubjectTerms | Brix Colostrum Dairy industry Enzyme-linked immunosorbent assay goat Goats Immunity (passive) Immunoglobulin G Immunoglobulins Infants (Newborn) Laboratories Milk production Multiple births Optical instruments Parturition Proteins Quality control Quality management refractometer |
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| Title | Colostrum Quality Assessment in Dairy Goats: Use of an On-Farm Optical Refractometer |
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