Evaluation of an automated temperature control equipment for lactating sows
Resumo
The present study aimed to develop and evaluate an automated cooling control system (ATCE) for sows in the farrowing phase. The experiment was conducted at the Swine Production Unit, Federal Institute of Education, Science and Technology, Campus Machado, Machado, state of Minas Gerais. Sixteen sows and their offspring were evaluated, eight treated and eight controls, in a randomized block design, with eight replications. Surface temperature, body temperature and respiratory rate of the animals were evaluated, in addition to floor temperature and performance parameters. The use of ATCE decreased the floor temperature (12h) and neck temperature (12 and 16h) (p < 0.10). In addition, there was a reduction in rectal temperature (12h) and respiratory rate (12 and 16h) in ATCE animals (p < 0.10). No significant differences were detected in the coefficient of variation (CV) of birth weight, but at weaning the CV of piglet weight was 26.3% lower in animals subjected to the ATCE (p = 0.079). Furthermore, the difference in CV between birth and weaning was also lower with the use of ATCE (p = 0.015). It can be concluded that the use of ATCE has a positive influence on the thermal comfort of females, in addition to improving litter uniformity.
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Referências
Amavizca-Nazar, A., Montalvo-Corral, M., González-Rios, H., & Pinelli-Saavedra, A. (2019). Hot environment on reproductive performance, immunoglobulins, vitamin E, and vitamin A status in sows and their progeny under commercial husbandry. Journal of Animal Science and Technology, 61(6), 340-351. DOI: https://doi.org/10.5187/jast.2019.61.6.340
Black, J. L., Mullan, B. P., Lorschy, M. L., & Giles, L. R. (1993). Lactation in the sow during heat stress. Livestock Production Science, 35(1-2), 153-170. DOI: https://doi.org/10.1016/0301-6226(93)90188-N
Chen, J., Guo, J., Guan, W-T, Song, J.-J., Deng, Z.-X., Cheng, L., … Wang, C.-X. (2018). Effect of pad-fan cooling and dietary organic acid supplementation during late gestation and lactation on reproductive performance and antioxidant status of multiparous sows in hot weather. Tropical Animal Health and Production, 50(5), 973-982. DOI: https://doi.org/10.1007/s11250-018-1520-z
Ferreira, A. S., Costa, P. M. A., Pereira, J. A. A., & Gomes, J. C. (1988). Estimativas de produção de leite de porca. Revista Brasileira de Zootecnia, 17(3), 203-211.
Ferreira, R. A. (2016). Maior produção com melhor ambiente para aves, suínos e bovinos. Viçosa, MG: Aprenda Fácil.
Instituto Nacional de Meteorologia [INMET]. (2017). Banco de dados meteorológicos para ensino e pesquisa. In: Instituto Nacional de Meteorologia. Retrieved from
Kyriazakis, I., & Whittemore, C. T. (2006). Whittemore's science and practice of pig production: Oxford, UK: Blackwell publishing.
Manno, M. C., Oliveira, R. F. M., Donzele, J. L., Oliveira, W. P., Vaz, R. G. M. V., Silva, B. A. N., … Lima, K. R. S. J. (2006). Efeitos da temperatura ambiente sobre o desempenho de suínos dos 30 aos 60 kg. Revista Brasileira de Zootecnia, 35(2), 471-477. DOI: https://doi.org/10.1590/S1516-35982006000200019
Parois, S. P., Cabezón, F. A., Schinckel, A. P., Johnson, J. S., Stwalley, R. M., & Marchant-Forde, J. N. (2018). Effect of floor cooling on behavior and heart rate of late lactation sows under acute heat stress. Frontiers in Veterinary Science, 5(1), 223. DOI: https://doi.org/10.3389/fvets.2018.00223
Quiniou, N, & Noblet, J. (1999). Influence of high ambient temperatures on performance of multiparous lactating sows. Journal of Animal Science, 77(8), 2124-2134. DOI: https://doi.org/10.2527 / 1999.7782124x
Renaudeau, D., Noblet, J., & Dourmad, J. Y. (2003). Effect of ambient temperature on mammary gland metabolism in lactating sows. Journal of Animal Science and Technology, 81(1), 217-231. DOI: https://doi.org/10.2527 / 2003.811217x
Renaudeau, D., & Noblet, J. (2001). Effects of exposure to high ambient temperature and dietary protein level on sow milk production and performance of piglets. Journal of animal science and technology, 79(6), 1540-1548. DOI: https://doi.org/10.2527 / 2001.7961540x
Ribeiro, B. P. V. B., Lanferdini, E., Palencia, J. Y. P., Lemes, M. A. G., Abreu, M. L. T., Souza, C., … Ferreira, R. A. (2018). Heat negatively affects lactating swine: A meta-analysis. Journal of Thermal Biology, 74(1), 325-330. DOI: https://doi.org/10.1016/j.jtherbio.2018.04.015
Rostagno, H. S., Albino, L. F. T., Donzele, J. L., Gomes, P. C., Oliveira, R. T., Lopes, D. C., & Euclides, R. F. (2011). Brazilian tables for poultry and swine. composition of feedstuffs and nutritional requirements. Viçosa, MG: Universidade Federal de MInas Gerais.
Silva, B. A. N., Oliveira, R. F. M., Donzele, J. L., Fernandes, H. C., Lima, A. L., Renaudeau, D., & Noblet, J. (2009). Effect of floor cooling and dietary amino acids content on performance and behaviour of lactating primiparous sows during summer. Livestock Science, 120(1-2), 25-34. DOI: https://doi.org/10.1016/j.livsci.2008.04.015
Van Wagenberg, A. V., Van der Peet-Schwering, C. M. C., Binnendijk, G. P., & Claessen, P. J. P. W. (2006). Effect of floor cooling on farrowing sow and litter performance: field experiment under Dutch conditions. Transactions of the ASABE, 49(5), 1521-1527. DOI: https://doi.org/10.13031/2013.22044
Weihan, C. (2017). Estrus identification and sowing time of sow. Chinese Journal Animal Hus. Veterinary, 33(10), 71.
Whittemore, C. T., & Yang, H. (1989). Physical and chemical composition of the body of breeding sows with differing body subcutaneous fat depth at parturition, differing nutrition during lactation and differing litter size. Animal Science, 48(1), 203-212. DOI: https://doi.org/10.1017/S0003356100003913
Zhang, Z., Zhang, H., & Liu, T. (2019). Study on body temperature detection of pig based on infrared technology: a review. Artificial Intelligence in Agriculture, 1(1), 14-26. DOI: https://doi.org/10.1016/j.aiia.2019.02.002
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