Data/hora: 08/06/2024 00:43:31

Biblioteca(s): | Embrapa Gado de Leite.
Data corrente: | 31/08/2021
Data da última atualização: | 31/08/2021
Autoria: | CASTRO, I. R. R. de; MACIEL, D. L.; VARGAS, J. A. C.; GOMES, D. I.; MACIEL, R. P.; MEZZOMO, R.; GAMA, M. A. S. da; OLIVEIRA, L. R. S.; GALVÃO, L. T. O.; PEREIRA, K. da S.; ALVES, K. S.
Afiliação: | ÍCARO RAINYER RODRIGUES DE CASTRO, Universidade Federal Rural da Amazônia; DAYANA LIMA MACIEL, Universidade Federal Rural da Amazônia; JULIÁN ANDRÉS CASTILLO VARGAS, Universidade Federal Rural da Amazônia; DAIANY IRIS GOMES, Universidade Federal Rural da Amazônia; RAYLON PEREIRA MACIEL, Universidade Federal Rural da Amazônia; RAFAEL MEZZOMO, Universidade Federal Rural da Amazônia; MARCO ANTONIO SUNDFELD DA GAMA, CNPGL; LUIS RENNAN SAMPAIO OLIVEIRA, Universidade Federal Rural da Amazônia; LUCKAS THIAGO OLIVEIRA GALVÃO, Universidade Federal Rural da Amazônia; KARIANE DA SILVA PEREIRA, Universidade Federal Rural da Amazônia; KALIANDRA SOUZA ALVES, Universidade Federal Rural da Amazônia.
Título: | Nutrient utilization, performance, and milk fatty acid composition of grazing cows fed supplements with babassu coconut.
Ano de publicação: | 2021
Fonte/Imprenta: | Tropical Animal Health and Production, v. 53, 433, 2021.
DOI: | https://doi.org/10.1007/s11250-021-02869-y
Idioma: | Inglês
Conteúdo: | This study evaluated the effects of dietary inclusion of cracked babassu coconut (CBC) in the supplement on nutrient utilization, performance, and milk fatty acid (FA) composition of dairy cows grazing Megathyrsus maximus cv. Mombasa. Five multiparous Holstein × Zebu mid-lactation cows (125 ± 16.5 days in milk) were assigned to five dietary treatments (replacement of 0%, 20%, 40%, 60%, and 80% of ground corn with CBC, on a dry matter (DM) basis) in a 5 × 5 Latin square design. The intake of DM from the supplement, crude protein (CP), non-fiber carbohydrate (NFC), fat (ether extract (EE)), and total digestible nutrients (TDNs) decreased linearly (P < 0.05), while the intake of DM from forage increased linearly (P < 0.05), with the increase in CBC inclusion in the supplement. Conversely, total DM intake was unaffected (P > 0.05). The DM, NFC, EE, and TDN digestibility decreased linearly (P < 0.05), while organic matter (OM) digestibility decreased in a quadratic fashion (P < 0.05), as CBC inclusion in the supplement increased. Nevertheless, digestibility of CP was unaffected (P > 0.05). Milk yield and composition (lactose, fat, protein, casein, and majority of FA) showed a linearly decreasing pattern (P < 0.05) with the increasing of CBC inclusion. However, proportions of trans-vaccenic acid, rumenic acid, total monounsaturated FA, and odd- and branched-chain FAs increased linearly (P < 0.05). On the opposite, total saturated FA (SFA) and the n-6:n-3 FA ratio in milk fat decreased linearly (P < 0.01). Hence, replacement of corn meal with CBC up to 80% in the supplement decreases nutrient intake and digestibility, as well as milk yield response in grazing dairy cows. However, CBC inclusion may enhance the nutritional properties of milk fat.
Palavras-Chave: | Lauric acid; Milk nutritional quality; Tropical pasture.
Thesagro: | Babaçu; Bovino; Gado Leiteiro; Orbignya Speciosa; Palmeira Oleaginosa.
Thesaurus Nal: | Dairy cows.
Categoria do assunto: | --
Registro original: | Embrapa Gado de Leite (CNPGL)
Exemplares: | CNPGL - (25267-1) - UPC - AP - DD -  -  -  - DIS