Data/hora: 15/06/2024 13:38:04

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)	
Exemplares: 	CTAA - (15047-1) - UPC - AP - DD -  -  -  - DIS
CNPGL - (25153-1) - UPC - AP - DD -  -  -  - DIS