Colostrum Management for Dairy Calves

Veterinary Clinics of North America: Food Animal Practice - Tập 35 Số 3 - Trang 535-556 - 2019
S. Godden1, Jason E. Lombard2, Amelia R. Woolums3
1Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, 225 VMC, 1365 Gortner Avenue, St Paul, MN 55108, USA
2National Animal Health Monitoring System (NAHMS), USDA:APHIS:VS:CEAH, 2150 Centre Avenue, Building B-2E7, Fort Collins, CO 80526, USA
3Department of Pathobiology and Population Medicine, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS 39762, USA

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Arthur, 1996, The development of the conceptus, 51

Davis, 1998, 179

McGuirk, 2004, Managing the production, storage and delivery of colostrum, Vet Clin North Am Food Anim Pract, 20, 593, 10.1016/j.cvfa.2004.06.005

Urie, 2018, Preweaned heifer management on US dairy operations: Part V. Factors associated with morbidity and mortality in preweaned dairy heifer calves, J Dairy Sci, 101, 9229, 10.3168/jds.2017-14019

Robison, 1988, Effects of passive immunity on growth and survival in the dairy heifer, J Dairy Sci, 71, 1283, 10.3168/jds.S0022-0302(88)79684-8

DeNise, 1989, Effects of passive immunity on subsequent production in dairy heifers, J Dairy Sci, 72, 552, 10.3168/jds.S0022-0302(89)79140-2

Wells, 1996, Factors associated with mortality to 21 days of life in dairy heifers in the United States, Prev Vet Med, 29, 9, 10.1016/S0167-5877(96)01061-6

Faber, 2005, Case study: Effects of colostrum ingestion on lactational performance, Applied Animal Scientist, 21, 420

Hammon, 2013, Lactation Biology Symposium: Role of colostrum and colostrum components on glucose metabolism in neonatal calves, J Anim Sci, 91, 685, 10.2527/jas.2012-5758

Gay CC. Failure of passive transfer of colostral immunoglobulins and neonatal disease in calves: a review. In Proc. 4th Int. Symp. Neonatal Dis. Veterinary Infectious Disease Organization, Saskatoon, SK, Canada. October 3–5, 1983. p. 346–62.

Weaver, 2000, Passive transfer of colostral immunoglobulins in calves, J Vet Intern Med, 14, 569, 10.1111/j.1939-1676.2000.tb02278.x

Windeyer, 2014, Factors associated with morbidity, mortality, and growth of dairy heifer calves up to 3 months of age, Prev Vet Med, 113, 231, 10.1016/j.prevetmed.2013.10.019

Furman-Fratczak, 2011, The influence of colostral immunoglobulin concentration in heifer calves’ serum on their health and growth, J Dairy Sci, 94, 5536, 10.3168/jds.2010-3253

Urie, 2018, Preweaned heifer management on US dairy operations: Part I. Descriptive characteristics of preweaned heifer raising practices, J Dairy Sci, 101, 9168, 10.3168/jds.2017-14010

Foley, 1978, Availability, storage, treatment, composition, and feeding value of surplus colostrum: A review, J Dairy Sci, 61, 1033, 10.3168/jds.S0022-0302(78)83686-8

Larson, 1980, Immunoglobulin production and transport by the mammary gland, J Dairy Sci, 63, 665, 10.3168/jds.S0022-0302(80)82988-2

Newby, 1982, Immunological activities of milk, Vet Immunol Immunopathol, 3, 67, 10.1016/0165-2427(82)90032-0

Barrington, 1997, Effect of prolactin on in vitro expression of the bovine mammary immunoglobulin G1 receptor, J Dairy Sci, 80, 94, 10.3168/jds.S0022-0302(97)75916-2

Thatcher, 1989, Colostral transfer of bovine immunoglobulin E and dynamics of serum IgE in calves, Vet Immunol Immunopathol, 20, 325, 10.1016/0165-2427(89)90078-0

Kirkpatrick, 2001, Passively transferred immunity in newborn calves, rate of antibody decay, and effect on subsequent vaccination with modified live virus vaccine, Bov Pract (Stillwater), 35, 47

Kirkpatrick, 2008, Effect of age at the time of vaccination on antibody titers and feedlot performance in beef calves, J Am Vet Med Assoc, 233, 136, 10.2460/javma.233.1.136

Chamorro, 2014, Can J Vet Res, 78, 81

Duhamel, 1987, Distribution of T and B lymphocytes in mammary dry secretions, colostrum and blood of adult dairy cattle, Vet Immunol Immunopathol, 14, 101, 10.1016/0165-2427(87)90047-X

Sheldrake, 1985, Intestinal uptake of intact maternal lymphocytes by neonatal rats and lambs, Res Vet Sci, 39-10, 15

Tuboly, 1988, Intestinal absorption of colostral lymphoid cells in newborn piglets, Vet Immunol Immunopathol, 20, 75, 10.1016/0165-2427(88)90027-X

Liebler-Tenorio, 2002, Update of colostral leukocytes in the intestinal tract of newborn calves, Vet Immunol Immunopathol, 85, 33, 10.1016/S0165-2427(01)00404-4

Reber, 2005, Effects of the ingestion of whole colostrum or cell-free colostrum on the capacity of leukocytes in newborn calves to stimulate or respond in one-way mixed leukocyte cultures, Am J Vet Res, 66, 1854, 10.2460/ajvr.2005.66.1854

Donovan, 2007, Effect of maternal cells transferred with colostrum on cellular response to pathogen antigens in neonatal calves, Am J Vet Res, 68, 778, 10.2460/ajvr.68.7.778

Reber, 2008, Transfer of maternal colostral leukocytes promotes development of the neonatal immune system I. Effects on monocyte lineage cells, Vet Immunol Immunopathol, 123, 186, 10.1016/j.vetimm.2008.01.034

Reber, 2008, Transfer of maternal colostral leukocytes promotes development of the neonatal immune system Part II. Effects on neonatal lymphocytes, Vet Immunol Immunopathol, 123, 305, 10.1016/j.vetimm.2008.02.009

Langel, 2015, Effect of feeding whole compared with cell-free colostrum on calf immune status: The neonatal period, J Dairy Sci, 98, 3729, 10.3168/jds.2014-8422

Bandrick, 2014, Colostral antibody-mediated and cell-mediated immunity contributes to innate and antigen-specific immunity in piglets, Dev Comp Immunol, 43, 114, 10.1016/j.dci.2013.11.005

Bandrick, 2011, Effect of cross-fostering on transfer of maternal immunity to Mycoplasma hyopneumoniae to piglets, Vet Rec, 168, 100, 10.1136/vr.c6163

Riedel-Caspari, 1991, The influence of colostral leukocytes on the immune system of the neonatal calf. IV. Effects on bactericidity, complement and interferon; synopsis, Dtsch Tierarztl Wochenschr, 98, 395

Novo, 2017, Effect of maternal cells transferred with colostrum on the health of neonate calves, Res Vet Sci, 112, 97, 10.1016/j.rvsc.2017.01.025

Meganck, 2016, Maternal colostral leukocytes appear to enhance cell-mediated recall response, but inhibit humoral recall response in prime-boost vaccinated calves, J Reprod Immunol, 113, 68, 10.1016/j.jri.2015.11.004

Langel, 2016, Effect of feeding whole compared with cell-free colostrum on calf immune status: Vaccination response, J Dairy Sci, 99, 3979, 10.3168/jds.2015-9892

Przybylska, 2007, Antioxidants in bovine colostrum, Reprod Domest Anim, 42, 402, 10.1111/j.1439-0531.2006.00799.x

Pakkanen, 1997, Growth factors and antimicrobial factors of bovine colostrum, Int Dairy J, 7, 285, 10.1016/S0958-6946(97)00022-8

Shah, 2000, Effects of milk-derived bioactives: an overview, Br J Nutr, 84, S3, 10.1017/S000711450000218X

Elfstrand, 2002, Immunoglobulins, growth factors and growth hormone in bovine colostrum and the effects of processing, Int Dairy J, 12, 879, 10.1016/S0958-6946(02)00089-4

Fischer, 2018, Short communication: The effect of heat treatment of bovine colostrum on the concentration of oligosaccharides in colostrum and in the intestine of neonatal male Holstein calves, J Dairy Sci, 101, 401, 10.3168/jds.2017-13533

Blum, 2008, Insulin-like growth factors (IGFs), IGF binding proteins, and other endocrine factors in milk: Role in the newborn, 397

Chen, 2016, Porcine milk-derived exosomes promote proliferation of intestinal epithelial cells, Sci Rep, 6, 33862, 10.1038/srep33862

Izumi, 2014, Time-dependent expression profiles of microRNAs and mRNAs in rat milk whey, PLoS One, 9, e88843, 10.1371/journal.pone.0088843

Shivley, 2018, Preweaned heifer management on US dairy operations: Part II. Factors associated with colostrum quality and passive transfer status of dairy heifer calves, J Dairy Sci, 101, 9168

Guy, 1994, Regulation of colostrum formation in beef and dairy cows, J Dairy Sci, 77, 3002, 10.3168/jds.S0022-0302(94)77241-6

Muller, 1981, Colostral immunoglobulin concentrations among breeds of dairy cattle, J Dairy Sci, 64, 1727, 10.3168/jds.S0022-0302(81)82754-3

Morin, 2001, Factors associated with colostral specific gravity in dairy cows, J Dairy Sci, 84, 937, 10.3168/jds.S0022-0302(01)74551-1

Tyler, 1999, Colostrum immunoglobulin concentrations in Holstein and Guernsey cows, Am J Vet Res, 60, 1136, 10.2460/ajvr.1999.60.09.1136

Blecha, 1981, Effects of prepartum protein restriction in the beef cow on immunoglobulin content in blood and colostral whey and subsequent immunoglobulin absorption by the neonatal calf, J Anim Sci, 53, 1174, 10.2527/jas1981.5351174x

Hough, 1990, Influence of nutritional restriction during late gestation on production measures and passive immunity in beef cattle, J Anim Sci, 68, 2622, 10.2527/1990.6892622x

Nowak, 2012, The impact of cow nutrition in the dry period on colostrum quality and immune status of calves, Pol J Vet Sci, 15, 77, 10.2478/v10181-011-0117-5

Mann, 2016, Effect of dry period dietary energy level in dairy cattle on volume, concentration of immunoglobulin G, insulin, and fatty acid composition of colostrum, J Dairy Sci, 99, 1515, 10.3168/jds.2015-9926

Lacetera, 1996, Effects of selenium and vitamin E administration during a late stage of pregnancy on colostrum and milk production in dairy cows, and on passive immunity and growth of their offspring, Am J Vet Res, 57, 1776, 10.2460/ajvr.1996.57.12.1776

Aragona, 2016, Prepartum supplementation of nicotinic acid: Effects on health of the dam, colostrum quality, and acquisition of immunity in the calf, J Dairy Sci, 99, 3529, 10.3168/jds.2015-10598

NRC, 2001

Nardone, 1997, Composition of colostrum from dairy heifers exposed to high air temperatures during late pregnancy and the early postpartum period, J Dairy Sci, 80, 838, 10.3168/jds.S0022-0302(97)76005-3

Gavin, 2018, Low colostrum yield in Jersey cattle and potential risk factors, J Dairy Sci, 101, 6388, 10.3168/jds.2017-14308

Morin, 2010, Effect of colostral volume, interval between calving and first milking, and photoperiod on colostral IgG concentrations in dairy cows, J Am Vet Med Assoc, 237, 420, 10.2460/javma.237.4.420

Jones, 1988, Passive protection of calves against experimental infection with Salmonella typhimurium, Vet Rec, 123, 536, 10.1136/vr.123.21.536

Waltner-Toews, 1985, A field trial to evaluate the efficacy of a combined rotavirus-coronavirus Escherichia coli vaccine in dairy cattle, Can J Comp Med, 49, 1

Hodgins, 1996, Preparturient vaccination to enhance passive immunity to the capsular polysaccharide of Pasteurella haemolytica A1, Vet Immunol Immunopathol, 50, 67, 10.1016/0165-2427(95)05493-6

McNulty, 1987, Effect of vaccination of the dam on rotavirus infection in young calves, Vet Rec, 120, 250, 10.1136/vr.120.11.250

Dixon, 1961, Metabolism and mammary secretion of proteins in the cow, Lab Invest, 10, 216

Rastani, 2005, Reducing dry period length to simplify feeding transition cows: Milk production, energy balance and metabolic profiles, J Dairy Sci, 88, 1004, 10.3168/jds.S0022-0302(05)72768-5

Grusenmeyer, 2006, Shortening the dry period from 60 to 40 days does not affect colostrum quality but decreases colostrum yield by Holstein cows, J Dairy Sci, 89, 336

Pritchett, 1991, Management and production factors influencing Immunoglobulin G1 concentration in colostrum from Holstein cows, J Dairy Sci, 74, 2336, 10.3168/jds.S0022-0302(91)78406-3

Maunsell, 1999, Use of mammary gland and colostral characteristics for prediction of colostral IgG1 concentration and intramammary infection in Holstein cows, J Am Vet Med Assoc, 214, 1817, 10.2460/javma.1999.214.12.1817

Baumrucker, 2010, Colostrogenesis: Mass transfer of immunoglobulin G1 into colostrum, J Dairy Sci, 93, 3031, 10.3168/jds.2009-2963

Conneely, 2013, Factors associated with the concentration of immunoglobulin G in the colostrum of dairy cows, Animal, 7, 1824, 10.1017/S1751731113001444

Moore, 2005, Effect of delayed colostrum collection on colostral IgG concentration in dairy cows, J Am Vet Med Assoc, 226, 1375, 10.2460/javma.2005.226.1375

Pritchett, 1994, Evaluation of the hydrometer for testing immunoglobulin G1 concentrations in Holstein colostrum, J Dairy Sci, 77, 1761, 10.3168/jds.S0022-0302(94)77117-4

Chigerwe, 2014, Refractometer assessment of colostral and serum IgG and milk total solids concentrations in dairy cattle, BMC Vet Res, 10, 178, 10.1186/s12917-014-0178-7

Bielmann, 2010, An evaluation of Brix refractometry instruments for measurement of colostrum quality in dairy cattle, J Dairy Sci, 93, 3713, 10.3168/jds.2009-2943

Quigley, 2013, Evaluation of the Brix refractometer to estimate immunoglobulin G concentration in bovine colostrum, J Dairy Sci, 96, 1148, 10.3168/jds.2012-5823

Bartier, 2015, Evaluation of on-farm tools for colostrum quality measurement, J Dairy Sci, 98, 1878, 10.3168/jds.2014-8415

Morin, 1997, Effects of quality, quantity, and timing of colostrum feeding and addition of a dried colostrum supplement on immunoglobulin G1 absorption in Holstein bull calves, J Dairy Sci, 80, 747, 10.3168/jds.S0022-0302(97)75994-0

Edwards, 1979, The period between birth and first suckling in dairy calves, Res Vet Sci, 26, 255, 10.1016/S0034-5288(18)32930-8

Lateur-Rowet, 1983, The failure of the oesophageal groove reflex, when fluids are given with an oesophageal feeder to newborn and young calves, Vet Q, 5, 68, 10.1080/01652176.1983.9693874

Godden, 2009, Improving passive transfer of immunoglobulins in calves II: Interaction between feeding method and volume of colostrum fed, J Dairy Sci, 92, 1758, 10.3168/jds.2008-1847

Desjardins-Morrissette, 2018, The effect of tube versus bottle feeding colostrum on immunoglobulin G absorption, abomasal emptying, and plasma hormone concentrations in newborn calves, J Dairy Sci, 101, 4168, 10.3168/jds.2017-13904

Chigerwe, 2012, Comparison of colostrum feeding by nipple bottle versus oroesophageal tubing in Holstein dairy bull calves, J Am Vet Med Assoc, 241, 104, 10.2460/javma.241.1.104

Broughton, 1970, Electron microscopic studies of the jejunal epithelium from neonatal pigs fed different diets, J Nutr, 100, 445

Staley, 1972, The ultrastructure of neonatal calf intestine and absorption of heterologous proteins, Anat Rec, 172, 559, 10.1002/ar.1091720310

Besser, 1985, Effect of colostral immunoglobulin G1 and immunoglobulin M concentrations on immunoglobulin absorption in calves, J Dairy Sci, 68, 2033, 10.3168/jds.S0022-0302(85)81065-1

Fisher, 2018, Effect of delaying colostrum feeding on passive transfer and intestinal bacterial colonization in neonatal male Holstein calves, J Dairy Sci, 101, 3099, 10.3168/jds.2017-13397

Stott, 1979, Colostral immunoglobulin transfer in calves I. Period of absorption, J Dairy Sci, 62, 1632, 10.3168/jds.S0022-0302(79)83472-4

James, 1981, Influence of administered indigenous microorganisms on uptake of [iodine-125] gamma-globulin in vivo by intestinal segments of neonatal calves, J Dairy Sci, 64, 52, 10.3168/jds.S0022-0302(81)82528-3

Besser, 1990, Decreased colostral immunoglobulin absorption in calves with postnatal respiratory acidosis, J Am Vet Med Assoc, 196, 1239, 10.2460/javma.1990.196.08.1239

Vermorel, 1989, Energy metabolism and thermoregulation in the newborn calf; Effect of calving conditions, Can J Anim Sci, 69, 113, 10.4141/cjas89-014

Olson, 1980, The effects of cold stress on neonatal calves II. Absorption of colostral immunoglobulins, Can J Comp Med, 44, 19

Tyler, 1991, Hypoxia in neonatal calves: Effect on intestinal transport of immunoglobulins, J Dairy Sci, 74, 1953, 10.3168/jds.S0022-0302(91)78361-6

Drewry, 1999, Effect of high arterial carbon dioxide tension on efficiency of immunoglobulin G absorption in calves, Am J Vet Res, 60, 609, 10.2460/ajvr.1999.60.05.609

Murray, 2015, A field study to evaluate the effects of meloxicam NSAID therapy and calving assistance on newborn calf vigor, improvement of health and growth in pre-weaned Holstein calves, Bov Pract, 49, 1, 10.21423/bovine-vol49no1p1-12

Murray, 2016, The effect of Meloxicam NSAID therapy on the change in vigor, suckling reflex, blood gas measures, milk intake and other variables in newborn dairy calves, J Vet Sci Anim Husbandry, 3, 1

Godden S, Knauer W, Gapinski C, et al. Effect of implementing a novel calf vitality scoring system and early intervention program on pain management in newborn calves. ADSA Discover Conference: Effects of Stress on Health and Production of Dairy Cows. Chicago, IL, October 30–November 1, 2018.

Selman, 1971, Studies on dairy calves allowed to suckle their dams at fixed times post-partum, Res Vet Sci, 12, 1, 10.1016/S0034-5288(18)34230-9

Pletts, 2018, Effect of extended colostrum feeding on serum IgG in newborn calves, J Anim Sci, 96, 182, 10.1093/jas/sky404.396

Pyo, 2018, The effects of extended colostrum feeding on gastrointestinal tract growth of the neonatal dairy calf, J Anim Sci, 96, 170, 10.1093/jas/sky404.372

Berge, 2009, Evaluation of the effects of oral colostrum supplementation during the first fourteen days on the health and performance of preweaned calves, J Dairy Sci, 92, 286, 10.3168/jds.2008-1433

Chamorro, 2017, Evaluation of the effects of colostrum replacer supplementation of the milk replacer ration on the occurrence of disease, antibiotic therapy, and performance of pre-weaned dairy calves, J Dairy Sci, 100, 1378, 10.3168/jds.2016-11652

Streeter, 1995, Isolation of Mycobacterium paratuberculosis from colostrum and milk of subclinically infected cows, Am J Vet Res, 56, 1322, 10.2460/ajvr.1995.56.10.1322

Walz, 1997, Otitis media in preweaned Holstein dairy calves in Michigan due to Mycoplasma bovis, J Vet Diagn Invest, 9, 250, 10.1177/104063879700900305

Johnson, 2007, The effect of feeding heat treated colostrum on passive transfer of immune and nutritional parameters in dairy calves, J Dairy Sci, 90, 5189, 10.3168/jds.2007-0219

Godden, 2012, Heat-treated colostrum and reduced morbidity in preweaned dairy calves: Results of a randomized trial and examination of mechanisms of effectiveness, J Dairy Sci, 95, 4029, 10.3168/jds.2011-5275

Morrill, 2012, Nationwide evaluation of quality and composition of colostrum on dairy farms in the United States, J Dairy Sci, 95, 3997, 10.3168/jds.2011-5174

McMartin, 2006, Heat-treatment of bovine colostrum I: Effects of temperature on viscosity and immunoglobulin G, J Dairy Sci, 89, 2110, 10.3168/jds.S0022-0302(06)72281-0

Stewart, 2005, Preventing bacterial contamination and proliferation during the harvest, storage and feeding of fresh bovine colostrum, J Dairy Sci, 88, 2571, 10.3168/jds.S0022-0302(05)72933-7

Godden, 2006, Heat-treatment of bovine colostrum II: Effects of heating duration on pathogen viability and immunoglobulin G, J Dairy Sci, 89, 3476, 10.3168/jds.S0022-0302(06)72386-4

Donahue, 2012, Heat treatment of colostrum on commercial dairy farms decreases colostrum microbial counts while maintaining colostrum immunoglobulin G concentrations, J Dairy Sci, 95, 2697, 10.3168/jds.2011-5220

Kryzer, 2015, Heat-treated (in single aliquot or batch) colostrum outperforms non-heat-treated colostrum in terms of quality and transfer of immunoglobulin G in neonatal Jersey calves, J Dairy Sci, 98, 1870, 10.3168/jds.2014-8387

Malmuthuge, 2015, Heat-treated colostrum feeding promotes beneficial bacteria colonization in the small intestine of neonatal calves, J Dairy Sci, 98, 8044, 10.3168/jds.2015-9607

Bey R, Godden S, Lillegaard H, et al. Improving cleanliness and shelf-life of refrigerated colostrum using heat-treatment and chemical preservatives. Proc. Annu. Meet. Minnesota Dairy Health Management Conference. St. Paul, MN, May 15–17, 2007.

Pithua, 2009, Efficacy of feeding a plasma-derived commercial colostrum replacer for the prevention of transmission of Mycobacterium avium subsp. paratuberculosis in Holstein calves, J Am Vet Med Assoc, 234, 1167, 10.2460/javma.234.9.1167

Francisco, 1993, Serum immunoglobulin concentrations after feeding maternal colostrum or maternal colostrum plus colostral supplement to dairy calves, Am J Vet Res, 54, 1051, 10.2460/ajvr.1993.54.07.1051

USDA

USDA, 2018

Godden, 2009, Improving passive transfer of immunoglobulins in calves. I: Dose effect of feeding a commercial colostrum replacer, J Dairy Sci, 92, 1750, 10.3168/jds.2008-1846

Morrill, 2010, Anionic salts in the prepartum diet and addition of sodium bicarbonate to colostrum replacer, and their effects on immunoglobulin G absorption in the neonate, J Dairy Sci, 93, 2067, 10.3168/jds.2009-2622

Foster, 2006, Serum IgG and total protein concentrations in dairy calves fed two colostrum replacement products, J Am Vet Med Assoc, 229, 1282, 10.2460/javma.229.8.1282

Lago, 2018, Efficacy of colostrum replacer versus maternal colostrum on immunological status, health and growth of preweaned dairy calves, J Dairy Sci, 101, 1344, 10.3168/jds.2017-13032

Place N, Bents A, Leslie K, et al. Relationship between serum total protein and serum IgG in Holstein calves fed either a plasma- or lacteal-derived colostrum replacer. In Proceedings of the 43rd Annu Conf of the AABP. Albuquerque, NM, August 19–21, 2010. p. 193.

Priestley, 2013, Effect of feeding maternal colostrum, a plasma-derived, or a colostrum-derived colostrum replacer on passive transfer of immunity, health, and performance of preweaning heifer calves, J Dairy Sci, 96, 3247, 10.3168/jds.2012-6339

Buczinkski, 2018, Systematic review and meta-analysis of diagnostic accuracy of serum refractometry and Brix refractometry for the diagnosis of inadequate transfer of passive immunity in calves, J Vet Intern Med, 32, 474, 10.1111/jvim.14893

Elsohaby, 2019, Using serum and plasma samples to assess failure of transfer of passive immunity in dairy calves, J Dairy Sci, 102, 567, 10.3168/jds.2018-15070

Wilm, 2018, Technical note: Serum total protein and immunoglobulin G concentrations in neonatal dairy calves over the first 10 days of age, J Dairy Sci, 101, 6430, 10.3168/jds.2017-13553

Calloway, 2002, Comparison of refractometers and test endpoints in the measurement of serum protein concentration to assess passive transfer status in calves, J Am Vet Med Assoc, 221, 1605, 10.2460/javma.2002.221.1605

Elsohaby, 2015, Evaluation of digital and optical refractometers for assessing failure of transfer of passive immunity in dairy calves, J Vet Intern Med, 29, 721, 10.1111/jvim.12560

Deelen, 2014, Evaluation of a Brix refractometer to estimate serum immunoglobulin G concentration in neonatal dairy calves, J Dairy Sci, 97, 3838, 10.3168/jds.2014-7939

Hernandez, 2016, Brix refractometry in serum as a measure of failure of passive transfer compared to measured immunoglobulin G and total protein by refractometry in serum from dairy calves, Vet J, 211, 82, 10.1016/j.tvjl.2015.11.004

Godden, 2008, Colostrum management for dairy calves, Vet Clin North Am Food Anim Pract, 24, 19, 10.1016/j.cvfa.2007.10.005

Dewell, 2006, Association of neonatal serum immunoglobulin G1 concentration with health and performance in beef calves, J Am Vet Med Assoc, 228, 914, 10.2460/javma.228.6.914