Composição em ácidos graxos no leite de vacas e ovelhas suplementadas com extrato tanífero de acácia negra

Ciencia Rural

article

Kamila Maciel Dias¹  Marco Antônio Sundfeld da Gama²  Henrique Mendonça Nunes Ribeiro-Filho¹ 

[1] Universidade do Estado de Santa Catarina;Embrapa Pecuária Sudeste

关键词: Acacia mearnsii;    plant secondary compounds;    ruminant diets;    dairy fat.;   

DOI  :  10.1590/0103-8478cr20220095

学科分类：农业科学（综合）

来源: Universidade Federal de Santa Maria * Centro de Ciencias Rurais

【 摘 要 】

This study evaluated the effects of Acacia mearnsii tannin extract on milk fatty acid profile of dairy ewes and cows. In experiment 1, twenty-four Lacaune ewes received one of the following dietary treatments: control (no tannin extract added to the diet), T30 (30 g tannin extract/kg concentrate), and T40 (40 g extract/kg concentrate). In experiment 2, thirty Jersey cows received either a control diet (no tannin extract added to the diet) or the same diet containing 40 g tannin extract/kg concentrate (T40). Dry matter intake, milk production and milk solids content of ewes and cows were unaffected by tannin supplementation. The cis-9, trans-11 conjugated linoleic acid (CLA) content increased linearly by 21% in milk fat from ewes fed tannin extract, while the C18:2 n-6 (linoleic acid) content tended (P = 0.051) to increase by 13% in cows fed TE. The supplementation with black wattle tannin extract improves the nutritional quality of milk fat of ewes and cows to a small extent, with no adverse effects on performance or gross milk composition.

【 授权许可】

Unknown