M. «Invited review: Effects of group housing of dairy calves on behavior, cognition, performance and health». Journal of Dairy Science, 2016; 99(4):2453-2467.
[33] Hedegaard, C. J. y Heegaard, P. M. H. «Passive immunisation, an old idea revisited: Basic principles and application to modern animal production systems». Veterinary Immunology and Immunopathology, 2016; 174:50-63.
[34] Paranhos da Costa, M. J. R., Galvão de Albuquerque, L., Eler, J. P., y de Vasconcelos, J. A. «Suckling behaviour of Nelore, Gir and Caracu calves and their crosses». Applied Animal Behaviour Science, 2006; 101(3-4):276-287.
[35] [35b] Bharti, P., et al. «Effect of weaning age on growth measurements and sero-biochemical parameters in Murrah buffalo calves». Indian Journal of Animal Sciences, 2018; 88:1305-1309.
[36] Bharti, P., et al. «Effect of lactation order on morphological traits of teat and udder in Murrah buffaloes». Journal of Animal Research, 2015; 5(3):561-565.
[37] Bharti, P. K., et al. «Impact of weaning age on post-partum reproductive performance and stress level in Murrah buffaloes». Indian Journal of Animal Sciences, 2017; 87(4):432-434.
[38] Napolitano, F., Rosa, G. y Sevi, A. «Welfare implications of artificial rearing and early weaning in sheep». Applied Animal Behaviour Science, 2008; 110(1-2):58-72.
[39] Grandinson, K. «Genetic background of maternal behaviour and its relation to offspring survival». Livestock Production Science, 2005; 93(1):43-50.
[40] [40b] [40c] Cruz-Cruz, L. A. de la, et al. «Effects of weaning on the stress responses and productivity of water buffalo in different breeding systems: A review». Livestock Science, 2019; 226:73-81.
[41] [41b] Alvez, P., Quintans, G., Hötzel, M. J. y Ungerfeld, R. «Two-step weaning in beef calves: permanence of nose flaps for 7 or 21 days does not influence the behaviour response». Animal Production Science, 2016; 56(5):866-870.
[42] [42b] [42c] [42d] Chen, Y., Arsenault, R., Napper, S. y Griebel, P. «Models and methods to investigate acute stress responses in cattle». Animals, 2015; 15(4):1268–1295.
[43] Tilbrook, A. J. y Ralph, C. R. «Hormones, stress and the welfare of animals». Animal Production Science, 2018; 58(3):408-415.
[44] [44b] O’Loughlin, A., McGee, M., Doyle, S. y Earley, B. «Biomarker responses to weaning stress in beef calves». Research in Veterinary Science, 2014; 97(2):458-463.
[45] Fazio, F., et al. «Evaluation of secondary stress biomarkers during road transport in rabbit». Livestock Science, 2015; 173:106-110.
[46] [46b] Acevedo, N. et al. «Effect of restricted suckling or temporal weaning on some physiological and behavioural stress parameters in Zebu cattle (Bos indicus)». Asian-Australasian Journal of Animal Sciences, 2005; 18(8):1176-1181.
[47] Bharti, P. K., et al. «Effect of weaning age on health of Murrah buffalo calves». Indian Journal of Animal Sciences, 2015; 85(12):1370-1374.
[48] [48b] López, J. R., Elías, A. y Delgado, D. «El sistema de alimentación de bucerros. Su influencia en la eficiencia de la especie». Revista Cubana de Ciencia Agrícola, 2008; 42:229-234.
[49] Grasso, F., et al. «Welfare of buffalo heifers in relation to feeding and space allowance». Italian Journal of Animal Science, 2003; 2:148-150.
[50] [50b] Gudev, D., Ralcheva, S., Yanchev, I. y Moneva, P. «Effect of weaning on some plasma metabolites in buffalo calves fed diets with or without supplemental chromium picolinate». Italian Journal of Animal Science, 2007; 6(sup2):547-550.
[51] Fagiolo, A., et al. «Haematochemical and hormonal parameters related to buffalo calves welfare». Buffalo Bulletin, 2013; 32:1131-1135.
[52] [52b] Kumar, A. Influence of Weaning on the Performance and Behaviour of Calves and their Dams in Murrah Buffaloes. [Ph. D. Thesis]. National Dairy Research Institute (NDRI). Deemed University, Karnal, 2014.
[53] Singh, P. K., et al. «Influence of weaning on growth, health and behaviour of Buffalo (Bubalus bubalis) calves». Indian Journal of Animal Research, 2018; 3546:1-5.
[54] Vecchio, D., et al. «Effects of milk feeding, frequency and concentration on weaning and buffalo (Bubalus bubalis) calf growth, health and behaviour». Tropical Animal Health and Production, 2013; 45(8):1697-1702.
[55] Kamboj, M. y Kumar, A. «Effect of weaning on performance and behaviour of calves and their dams in dairy cows - A review». Indian Journal of Animal Sciences, 2013; 83:991-997.
[56] Khan, Z., Khan, S., Ahmad, N. y Raziq, A. «Investigation of mortality incidence and managemental practices in buffalo calves at commercial dairy farms in Peshawar city». Journal of Agricultural, Biological and Environmental Statistics, 2007; 2:16-22.
[57] Weary, D., Jasper, J. y Hötzel, M. J. «Understanding weaning stress». Applied Animal Behaviour Science, 2008; 110:24-41.
[58] Solano, J., Orihuela, A., Galina, C. S. y Aguirre V. «A note on behavioral responses to brief cow-calf separation and reunion in cattle (Bos indicus)». Journal of Veterinary Behavior, 2007; 2(1):10-14.
[59] Pérez-Torres, L.