Data/hora: 10/06/2024 02:40:59

Biblioteca(s): | Embrapa Agroindústria de Alimentos; Embrapa Gado de Leite.
Data corrente: | 03/11/2020
Data da última atualização: | 20/09/2021
Autoria: | GAMA, M. A. S. da; PAULA, T. A. de; VERAS, A. S. C.; GUIDO, S. I.; BORGES, C. A. V.; ANTONIASSI, R.; LOPES, F. C. F.; NEVES, M. L. M. W.; FERREIRA, M. DE A.
Afiliação: | MARCO ANTONIO SUNDFELD DA GAMA, CNPGL; TALITA A. DE PAULA, North Carolina Central University; ANTÔNIA S. C. VÉRAS, Universidade Federal Rural de Pernambuco; SEBASTIAO I. GUIDO, Instituto Agronômico de Pernambuco; CRISTIANO AMANCIO VIEIRA BORGES, CNPGL; ROSEMAR ANTONIASSI, CTAA; FERNANDO CESAR FERRAZ LOPES, CNPGL; MARIA L. M. W. NEVES, Universidade Federal Rural de Pernambuco; MARCELO DE A. FERREIRA, Universidade Federal Rural de Pernambuco.
Título: | Partially replacing sorghum silage with cactus (Opuntia stricta) cladodes in a soybean oil-supplemented diet markedly increases trans-11 18:1, cis-9, trans-11 CLA and 18:2 n-6 contents in cow milk.
Ano de publicação: | 2021
Fonte/Imprenta: | Journal of Animal Physiology and Animal Nutrition, v. 105, p. 232-246, 2021.
DOI: | https://doi.org/10.1111/jpn.13466
Idioma: | Inglês
Conteúdo: | Based on low 18:0 contents observed in milk fat of cows fed cactus cladodes (CC), we hypothesized that including Opuntia stricta cladodes in a soybean oil (SO)-supplemented diet would promote incomplete rumen biohydrogenation of supple-mental PUFA, leading to increased trans-11 18:1 and cis-9, trans-11 CLA contents in milk. Twelve Holstein cows were used in a two-period study: (a) Baseline: all cows received a total mixed ration (TMR) composed of sorghum silage (SS) and a concen-trate containing no SO for 14 days; (b) Treatment: cows received one of the follow-ing SO-supplemented diets for 21 days: (1) SS-TMR: a TMR composed of SS and a SO-enriched concentrate, (2) CC-TMR: a TMR containing CC as a partial substitute for SS plus the SO-enriched concentrate, and (3) CC-PMR: same diet as in treatment 2, but CC were mixed with the SO-enriched concentrate and fed as a partial mixed ration (PMR). Both CC diets increased relative abundances of trans-11 18:1, cis-9, trans-11 CLA, and 18:2 n-6 in milk fat, whereas opposite effects were observed on 18:0 and cis-9 18:1. Proportion of 18:2 n-6 increased, and cis-9, trans-11 CLA tended to increase with CC-PMR as compared to CC-TMR, whereas 18:3 n-3 was higher with CC-PMR than with SS-TMR. Proportions of several odd- and branched-chain fatty acids, certain 18:1 isomers, and trans-9, cis-11 CLA changed with CC diets, nota-bly with CC-PMR. Milk yield and intake of most nutrients (except fibre) increased or tended to increase with the CC diets, whereas gross milk composition was unaltered. Stearoyl-CoA desaturase-1 index for C18 (SCD18) was higher with CC-PMR than with SS-TMR, and milk n-6:n-3 FA ratio and apparent transfer of 18:2 n-6 to milk increased with CC diets. These results indicate that Opuntia stricta cladodes can be a valuable feed ingredient for improving the nutraceutical value of milk fat.
Palavras-Chave: | Cladódios; Nutraceutical value.
Thesagro: | Ácido Graxo; Ruminante; Silagem; Sorgo.
Thesaurus Nal: | Food technology; Milk fatty acids; Ruminants.
Categoria do assunto: | F Plantas e Produtos de Origem Vegetal
Registro original: | Embrapa Gado de Leite (CNPGL)

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