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Galvão LTO, Vargas JAC, Mezzomo R, Oliveira LRS, Dos Santos PM, Maciel RP, Soares EA, Farias MLC, Caldas CS, Faciola AP, Alves KS. Effects of supplementing cassava root silage to grazing dairy cows on nutrient utilization, milk production and composition in the tropics. Trop Anim Health Prod 2024; 56:120. [PMID: 38607525 DOI: 10.1007/s11250-024-03962-8] [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: 09/04/2023] [Accepted: 03/22/2024] [Indexed: 04/13/2024]
Abstract
The current study evaluated the effects of supplementing cassava root silage (CRS) to dairy cows grazing on Megathyrsus maximus cv Mombasa on nutrient intake and digestibility, as well as on milk production and composition. Ten primiparous Girolando cows with average body weight ± (SEM) of 373.45 ± (63.55) kg were used in a replicated 5 × 5 Latin square. Animals were subjected to five treatments: (I) grazing cows without supplementation (WCS); (II) grazing cows provided with 5 kg DM of supplement without CRS (0 g/kg DM of CRS) or including (III) 260, (IV) 520, and (V) 780 g/kg DM of CRS. Statistical analyses were performed using the PROC MIXED of SAS with significance at P < 0.05. Intake of neutral detergent fiber (NDF) and ether extract decreased (P < 0.01), while intake of non-fiber carbohydrates increased (P < 0.01), with increased CRS in the diets. Total DM intake and digestibility of DM, and digestibility of nutritional components were lower (P < 0.03) in WCS animals compared to supplemented animals, except for intake and digestibility of NDF, which was the opposite. Milk yield (MY) and fat corrected milk (FCM), as well as all milk components were unaffected (P > 0.05) by CRS inclusion. In contrast, MY, FCM, protein, lactose, casein, and non-fat milk solids (NFMS) were greater for animals that received supplementation (P < 0.05), compared to animals WCS. Milk fat and total dry extract (TMS) did not differ (P > 0.11) between two groups. In conclusion, CRS may be a potential corn meal replacer in the supplement of dairy cows under tropical conditions.
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Affiliation(s)
| | | | - Rafael Mezzomo
- Department of Animal Science, Universidade Federal Rural da Amazônia, Parauapebas, Pará, 68515-000, Brazil
| | | | - Perlon Maia Dos Santos
- Department of Animal Science, Universidade Federal Rural da Amazônia, Parauapebas, Pará, 68515-000, Brazil
| | - Raylon Pereira Maciel
- Department of Animal Science, Universidade Federal Rural da Amazônia, Parauapebas, Pará, 68515-000, Brazil
| | - Emilly Araújo Soares
- Department of Animal Science, Universidade Federal Rural da Amazônia, Parauapebas, Pará, 68515-000, Brazil
| | - Maria Luiza Costa Farias
- Department of Animal Science, Universidade Federal Rural da Amazônia, Parauapebas, Pará, 68515-000, Brazil
| | - Cláudia Siqueira Caldas
- Department of Animal Science, Universidade Federal Rural da Amazônia, Parauapebas, Pará, 68515-000, Brazil
| | | | - Kaliandra Souza Alves
- Department of Animal Science, Universidade Federal Rural da Amazônia, Parauapebas, Pará, 68515-000, Brazil.
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Lima Maciel D, Castillo Vargas JA, Mezzomo R, Sundfeld da Gama MA, Leite LC, Rodrigues de Castro ÍR, Sampaio Oliveira LR, Costa Farias ML, dos Santos Luz WB, Alves KS. Physicochemical, nutritional, and sensory attributes of Minas frescal cheese from grazing cows fed a supplement containing different levels of babassu coconut (Orbignya speciosa). Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2021.105176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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