Ingestive behavior of beef cows submitted to different nutritional levels in the final third of pregnancy
DOI:
https://doi.org/10.33448/rsd-v10i7.16555Keywords:
Grazing station; Grazing time; Native pasture; Rumination; Supplementation.Abstract
The objective of this work was evaluate the ingestive behavior of beef cows submitted to different nutritional levels in the final third of gestation. Eighteen pregnant cows of the Charolais and Nellore breeds were used, divided into treatments: Low (exclusively on natural pasture); Medium (supplementation to meet maintenance requirements); High (supplementation to meet 150% of maintenance requirements). The randomized complete experimental design was used with six replicates per treatment and three evaluation periods. The time spent in other activities increased with pregnancy advancement and as the nutritional level in this period also increased, with values of 0.96; 1.86 and 3.24 hours day-1 for the Low, Medium and High treatments respectively. High treatment cows proved to be more selective, since they had less time per station (6.96 vs 9.18 and 10.19 seconds) and went through a higher number of stations per minute (9.51 vs 7.06 and 7 , 31) in relation to the Low and Medium cows, respectively. Shortest time per bite (1.45 seconds) and consequently a greater number of bite rate (41.86 bites/min) was obtained in the Low cows compared to Medium and High cows. Greater selectivity and grazing efficiency occurred at pregnancy end, with less displacement between stations (1.03 steps) and less time per station (6.42 seconds) resulting in a greater number of stations / minute (10.01 stations). Low-level cows are more efficient in apprehending pasture, while supplemented cows are more selective. As gestation advances, cows increase the selectivity of material ingested to meet greater metabolic demands associated with less consumption capacity.
References
Alvares, C. A., Stape, J. L., Sentelhas, P. C., Gonçalves, J. L. M., & Sparovek, G. (2013). Köppen’s climate classification map for Brazil. Meteorologische Zeitschrift, 22, 711-728. 10.1127/0941-2948/2013/0507
Barcellos, J. O. J. & Oaigen, R. P. I. (2014). Cadeia produtiva da carne bovina e os sistemas de produção na bovinocultura de corte. In: Oaigen, R.O. (Coord.). Gestão na Bovinocultura de Corte. Guaíba: Agro livros, 21–41.
Bauman, D. E. & Currie, B. (1980). Partitioning of nutrients during pregnancy and lactation: a review of mechanisms involving homeostasis e homeorhesis. Journal of Dairy Science, 63, 1514-1529. doi:10.3168/jds.S0022-0302(80)83111-0
Bohnert, D. W., Stalker, L. A., Nyman, A., Falck, S. J., & Cooke, R. F. (2013). Late gestation suplementation of beff cows differing in body condition score: Effects on cow and calf performance. Journal of Animal Science, 91, 5485-5491. 10.2527 / jas.2013-6301
Braga, G. J., Pedreira, C. G. S., Herling, V. R., & Luz, P. H. C. (2007). Eficiência de pastejo de capim-marandu submetido a diferentes ofertas de forragem. Pesquisa Agropecuária Brasileira, 42, 1641-1649. 10.1590/S0100-204X2007001100017
Du, M., Tong, J., Zhao, J., Underwood, K. R., Zhu, M., Ford, S. P., & Nathanielsz, P. W. (2010). Fetal programming of skeletal muscle development in ruminant animals. Journal Animal Science, 88, 51-60. 10.2527 / jas.2009-2311
Goularte, S. R., et al. (2011). Comportamento ingestivo e digestibilidade de nutrientes em vacas submetidas a diferentes níveis de concentrado. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 63(2), 414-422. 10.1590/S0102-09352011000200020
Hodgson, J. (1982). Infuence of sward characteristics on diet selection and herbage intake by the grazing animal. In: HACKER, J.B. (ed.) Nutritional limits to animal production from pastures. Queensland, 153-166.
Hodgson, J. (1990). Grazing management: science into practice. Longman Handbooks in Agriculture, 203.
Hodgson, J., Clark, D. A., & Mitchell, R. J. (1994). Foraging behavior in grazing animals and its impact on plant communities. In: FAHEY Jr, G.C. (Ed). Forage quality, evaluation and utilization. Nacional Conference on Forage Quality. American Society of Agronomy, 796-827.
Laca, E. A., Ungar, E. D., Seligman, N. G., & Demment, M. W. (1992). Effects of sward height and bulk density on bite dimensions of cattle grazing homogeneous swards. Grass and Forage Science, 47, 91-102. 10.1111/j.1365-2494.1992.tb02251.x
Lee, C., Fisher, A. D., Colditz, I. G., Lea, J. M., & Ferguson, D. M. (2013). Preference of beef cattle for feedlot or pasture environments. Applied Animal Behaviour Science, 145, 53-59. 10.1016/j.applanim.2013.03.005
Martini, P. M., Brondani, I. L., Alves Filho, D. C., Viana, A. F. P., Adams, S. M., Klein, J. L., Rodrigues, L. S., & Cattelam, J. (2017). Comportamento ingestivo de bovinos jovens mantidos em pasto de sorgo ou milheto. Boletim da Indústria Animal, 74, 308-318. 10.17523/bia.v74n4p308
Mello, J. C. C. B. S., Gomes, E. G., Abreu, U. G. P., Carvalho, T. B., & Zen, S. (2013). Análise de desempenho de sistemas de produção modais de pecuária de cria no Brasil. Produção, 23(4), 877-886. 10.1590/S0103-65132013005000010
Missio, R. L., Brondani, I. L., Alves Filho, D. C., Silveira, M. F., Freitas, L. S., & Restle, J. (2010). Comportamento ingestivo de tourinhos terminados em confinamento, alimentados com diferentes níveis de concentrado na dieta. Revista Brasileira de Zootecnia, 39, 1571-1578. 10.1590/S1516-35982010000700025
National Research Council. (1998). Nutrient requirements of beef cattle. Oklahoma State University: Division of Agricultural Sciences and Natural Resources.
Pereira, C. H., Patino, H. O., Hoshide, A. K., Abreu, D. C., Rotz, C. A., & Nabinger, C. (2018). Grazing supplementation and crop diversification benefits for southern Brazil beef: A case study. Agricultural Systems, 62, 1-9. 10.1016 / j.agsy.2018.01.009
Prache, S. & Peyraud, J. (2001). Foraging behavior and intake in temperate cultivated grassland. In: International Grassland Congress, 309-319.
Sas Institute Inc. (2016). Statistical Analysis System. User’s guide version 3.5 SAS® Studio University Edition. Cary, North Carolina.
Silveira, M. F., et al. (2014). Suplementação com gordura protegida para vacas de corte desmamadas precocemente mantidas em pastagem natural. Arquivo Brasileiro de Medicina Veterinária e Zootecnia, 66, 809-817. 10.1590/1678-41625366
Sniffen, C. J., Beverly, R. W., Mooney, C. S. Roe, M. B., & Skidmore, A. L. (1993). Nutrient requirement versus supply in dairy cow: Strategies to account for variability. Journal of Dairy Science, 76, 3160-3178. https://www.journalofdairyscience.org/article/S0022-0302(93)77655-9/pdf
Wilm, H. G., Costello, D. F., & Klipple, G. E. (1944). Estimating forage yield by the double-sampling methods. Journal of American Society of Agronomy, 36, 194-203. 10.2134/agronj1944.00021962003600030003x
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Copyright (c) 2021 Sander Martinho Adams; John Lenon Klein; Diego Soares Machado; Leonel da Silva Rodrigues; Ivan Luiz Brondani; Dari Celestino Alves Filho; Joziane Michelon Cocco; Fabiana Moro Maidana; Gabriele Amaro de Oliveira; Matheus Dutra Teixeira; Raíssa Lixinski de Souza
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