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de Souza ZWG, da Silva MGP, Neves AP, de Araújo TLAC, Siqueira NMC, Amaral WA, Montagner DB, Ítavo LCV, Júnior VB, Marson B, de Nadai Bonin M, da Costa Gomes R. Association of rainfall pattern with the disappearance of mineral mixtures fed cattle managed on tropical pastures. Trop Anim Health Prod 2024; 56:69. [PMID: 38319414 DOI: 10.1007/s11250-024-03919-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 01/30/2024] [Indexed: 02/07/2024]
Abstract
The objective of the present study was to evaluate the association between rainfall and the disappearance of mineral mixtures in the supplementation of cattle on pasture. Supplement consumption and rainfall data were obtained from five experiments carried out between 2016 and 2022. The experiments lasted from 84 to 126 days and had 12 to 18 paddocks formed by Brachiaria spp. under grazing by beef cattle (n = 544), receiving mineral supplementation. Supplement disappearance (SD), difference between the amount offered and leftovers (considering intake and losses) and precipitation (PR), was measured over periods of 14 to 21 days. The periods (n = 565) were classified as very dry, dry, normal, rainy, and very rainy, using the Quantis method. The number of rainy days (RD) and the average precipitation per RD (APRD) per period and the average body weight (BW) of the animals in the periods were also determined. Linear regression analyses assessed the association between BW, PR, RD, and APRD. The average PR in the periods studied was 68.5 mm, ranging from 0.00 to 160.3 mm. Each period had up to six RD, with up to 129.5 mm precipitated. The average BW was 270 kg, ranging from 208 to 335 kg and the average SD was 82.2 g/animal/day, ranging from 0.52 to 176.7 g/animal/day. Differences in RD and APRD are consistent across precipitation classes. In the regression analysis, the model with the highest coefficient of determination was the one that contained the linear and quadratic terms for the RD variable. Including linear and quadratic terms of all variables in a multiple regression represented more than half of the variation in the disappearance of the supplement (R2 = 0.5823). There is no clear relationship between the intensity of precipitation, reflected in the form of classes, and the disappearance of supplements offered to cattle on pasture since dry and very rainy periods can be equivalent. However, variables that characterize the precipitation pattern are more relevant than animal live weight to explain existing variations in supplement disappearance. Among them, the frequency with which precipitation occurs (number of rainy days in the period) seems to be more important than the precipitation rate itself, probably because it is related to the volume of precipitation accumulated in the period.
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Affiliation(s)
- Zey Welington Gomes de Souza
- Faculdade de Medicina Veterinária e Zootecnia (FAMEZ), Universidade Federal de Mato Grosso do Sul, Avenida Senador Felinto Muller, 2443, Pioneiros, Cidade Universitária, Campo Grande, MS, 79070-900, Brazil
| | - Manoel Gustavo Paranhos da Silva
- Faculdade de Medicina Veterinária e Zootecnia (FAMEZ), Universidade Federal de Mato Grosso do Sul, Avenida Senador Felinto Muller, 2443, Pioneiros, Cidade Universitária, Campo Grande, MS, 79070-900, Brazil.
| | - Andrei Pereira Neves
- Universidade Estadual de Londrina, Rodovia Celso Garcia Cid km 380, Londrina, PR, Brazil
| | | | | | - Wallyson Almeida Amaral
- Faculdade de Medicina Veterinária e Zootecnia (FAMEZ), Universidade Federal de Mato Grosso do Sul, Avenida Senador Felinto Muller, 2443, Pioneiros, Cidade Universitária, Campo Grande, MS, 79070-900, Brazil
| | | | - Luís Carlos Vinhas Ítavo
- Faculdade de Medicina Veterinária e Zootecnia (FAMEZ), Universidade Federal de Mato Grosso do Sul, Avenida Senador Felinto Muller, 2443, Pioneiros, Cidade Universitária, Campo Grande, MS, 79070-900, Brazil
| | | | - Bruno Marson
- Connan Comércio de Nutrição Animal Ltda., Av. Mário Pedro Vercellino, 877, Jardim América, Boituva, SP, Brazil
| | - Márcio de Nadai Bonin
- Connan Comércio de Nutrição Animal Ltda., Av. Mário Pedro Vercellino, 877, Jardim América, Boituva, SP, Brazil
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