Ventura M R, Bastianelli D, Deniz S, Saavedra P, Rey L, Bonnal L, González-García E
Department of Animal Science, University of Las Palmas de Gran Canaria, Las Palmas, Spain.
CIRAD-UMR Systèmes d'élevage Méditerranéens et Tropicaux, Montpellier, France.
Trop Anim Health Prod. 2019 Jul;51(6):1757-1761. doi: 10.1007/s11250-019-01839-9. Epub 2019 Feb 7.
The objective of this study was to contribute to the characterization of nutritional potentials, with special attention to the total phenol and condensed tannins content and the effects on in vitro digestibility of some browsing shrub legumes traditionally used for ruminant feeding. The varieties selected were Bituminaria bituminosa var. bituminosa (BBB), Bituminaria bituminosa var. albormaginata (BBA), Chamaecytisus proliferus var. palmensis (CPP), Chamaecytisus proliferus var. canariae (CPC), and Adenocarpus foliosus (AF). Chemical composition, in vitro digestibility, and net energy for lactation (NE) were analyzed and compared among varieties; the effects of total phenol (TP) and condensed tannins (CT) compounds on digestibility were estimated. Condensed tannins ranged from 1 to 5 g/kg DM of tannins, while total phenols ranged from 9 to 32 g/kg DM of tannins. In vitro organic matter digestibility (OMD) ranged from 0.52 to 0.71, and estimated net energy for lactation (NE) ranged from 4.2 to 5.8 MJ/kg DM, with significant differences among all the varieties. This Chamaecytisus varieties (CPC, CPP) have higher feeding values, following CPC > CPP > AF > BBB > BBA in order. Although there were condensed tannins and total phenols in all the shrubs analyzed, total phenol contents differed significantly between the shrubs. The effect of the content of the total phenols and of the tannins condensed in the OMD of the varieties of shrubs analyzed, shows that the higher amounts of total phenols in some of the varieties of shrubs analyzed, increased the in vitro digestibility (OMD) of the shrubs but high amounts of CT decreased OMD.
本研究的目的是为营养潜力的特征描述做出贡献，特别关注总酚和缩合单宁的含量，以及对一些传统上用于反刍动物饲养的放牧灌木豆科植物体外消化率的影响。所选品种为Bituminaria bituminosa var. bituminosa（BBB）、Bituminaria bituminosa var. albormaginata（BBA）、Chamaecytisus proliferus var. palmensis（CPP）、Chamaecytisus proliferus var. canariae（CPC）和Adenocarpus foliosus（AF）。对各品种的化学成分、体外消化率和泌乳净能（NE）进行了分析和比较；评估了总酚（TP）和缩合单宁（CT）化合物对消化率的影响。缩合单宁含量为1至5 g/kg干物质单宁，而总酚含量为9至32 g/kg干物质单宁。体外有机物消化率（OMD）在0.52至0.71之间，估计泌乳净能（NE）在4.2至5.8 MJ/kg干物质之间，所有品种之间存在显著差异。这两种金雀花品种（CPC、CPP）具有较高的饲用价值，顺序为CPC＞CPP＞AF＞BBB＞BBA。虽然在所分析的所有灌木中都存在缩合单宁和总酚，但不同灌木之间的总酚含量差异显著。所分析的灌木品种中总酚和缩合单宁含量对体外消化率的影响表明，在所分析的一些灌木品种中，较高的总酚含量提高了灌木的体外消化率（OMD），但高含量的CT降低了OMD。
