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首页> 外文期刊>Journal of Agriculture of the University of Puerto Rico >Chemical composition, in vitro degradability, and intake and digestibility by goats of pigeon pea (Cajanus cajan cv. Guerrero) and Guinea-grass hay mixtures.
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Chemical composition, in vitro degradability, and intake and digestibility by goats of pigeon pea (Cajanus cajan cv. Guerrero) and Guinea-grass hay mixtures.

机译：化学成分，体外可降解性，以及鸽子豌豆山羊的摄入和消化率（ Cajanus cajan Cv。Guerrero）和几内草干草混合物。

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摘要

This experiment was designed to determine the chemical composition, in vitro degradability, and intake and digestibility by goats of pigeon pea (PP) and guinea grass (Panicum maximum, GG) hay mixtures. Samples of the hays were taken and ground through a 2.5 mm screen, then manually mixed at five different proportions: 100:0; 75:25; 50:50; 25:75; and 0 w/w. Triplicate samples from each combination were analysed to determine contents of organic matter (OM), inorganic matter (IM), crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF), lignin, hemicellulose (as the differences NDF-ADF) and cellulose (as the difference ADF-lignin-IM), using standard procedures. Samples from each combination were analysed in a commercial laboratory to determine in vitro dry matter degradability (IVDMD), crude protein degradability (CPD) as percentage of DM, and NDF degradability (NDFD) as percentage of total cell-wall content after 48 h of incubation. For all five forage mixtures, OM and IM contents were similar. IVDMD was higher in mixtures containing 75 and 100% PP than in GG alone, and CPD increased as PP was increasingly includes in the grass-legume mixtures. The total DM and NDF intakes were lower but CP intake was higher in goats fed the 60:40 GG:PP mixture than in those receiving GG alone. In summary, the chemical composition and CPD improved as percentage of PP increased in the mixtures with GG; however, inclusion of PP in proportions higher than 25% decreased NDFD. A diet containing 40% PP also decreased forage intake and in vivo digestibility as compared with that of GG fed alone.
机译：该实验旨在确定化学成分，体外可降解性和鸽子（PP）和豚草（胰岛最大，GG）干草混合物的山羊的进气和消化率。将HAY的样品进行并研磨通过2.5mm屏幕，然后在五种不同的比例下手动混合：100：0; 75:25; 50:50; 25:75;和0 w / w。分析来自各组合的三重样品以确定有机物质（OM），无机物质（IM），粗蛋白（CP），中性洗涤剂纤维（NDF），酸洗涤剂纤维（ADF），木质素，半纤维素（作为差异NDF-ADF）和纤维素（作为差异ADF-lignin-IM），使用标准程序。在商业实验室分析来自每种组合的样品，以确定体外干物质降解性（IVDMD），粗蛋白质可降解性（CPD）作为DM的百分比，并且NDF可降解性（NDFD）作为48小时后的总细胞壁含量的百分比孵化。对于所有五种牧草混合物，OM和IM内容是相似的。 IVDMD在含有75和100％PP的混合物中较高，而不是单独的GG，并且随着PP越来越多地增加CPD，包括在草豆类混合物中。总DM和NDF摄入量较低，但CP Intake在山羊喂养60:40 GG：PP混合物仅在接受GG的那些中。总之，化学成分和CPD改善为PP在与GG的混合物中增加的百分比;然而，将PP以高于25％的比例降低了NDFD。含有40％PP的饮食也降低了饲料摄入量和体内消化率，与单独的GG相比。

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