晒干大黑山薏苡全株在生长肉兔上的营养价值评定

发布时间：2018-12-14 13:21

【摘要】：为拓展家兔的粗饲料来源,本研究评定了由四川农业大学玉米研究所选育的大黑山薏苡(Coix lacryma-jobi cv.Daheishan)全株(晒干)对生长肉兔营养价值的影响。在分析化学组成的基础上,将24只42日龄遗传背景相同、体重相近(1 107.00±98.42)g的健康法国伊拉商品兔随机分为两组(每组12只),单笼饲养在粪尿分开的金属网笼(60cm×60cm×45cm)中,分别饲喂基础饲料(100%)和试验饲粮(85%基础饲粮+15%大黑山薏苡全株),进行体内消化试验,试验期11d(预试期7d,收集期4d)。结果显示,大黑山薏苡全株的干物质(dry matter,DM)含量为88.46%。以DM计,总能(gross energy,GE)、粗蛋白质(crude protein,CP)、粗纤维(crude fiber,CF)、中性洗涤纤维(neutral detergent fiber,NDF)、酸性洗涤纤维(acid detergent fiber,ADF)、酸性洗涤木质素(acid detergent lignin,ADL)、无氮浸出物(nitrogen free extract,NFE)、粗脂肪(ether extract,EE)、粗灰分(crude ash,Ash)、钙(calcium,Ca)和总磷(total phosphorus,TP)含量分别为16.94 MJ·kg~(-1)、13.46%、29.58%、62.57%、42.05%、7.01%、31.20%、1.02%、13.19%、1.21%和0.20%,精氨酸(arginine,Arg)、组氨酸(histidine,His)、异亮氨酸(isoleucine,Ile)、亮氨酸(leucine,Leu)、蛋氨酸(DL-Methionine,Met)、赖氨酸(lysine,Lys)、苯丙氨酸(phenylalanine,Phe)、苏氨酸(L-Threonine,Thr)和缬氨酸(valine,Val)含量分别为0.47%、0.15%、0.37%、0.74%、0.14%、0.41%、0.46%、0.45%和0.49%。对于生长肉兔,大黑山薏苡全株的DM、GE、CP、CF、NDF、ADF、ADL、EE、Ash、Ca和TP全肠表观消化率分别为31.67%、30.02%、60.09%、4.55%、10.26%、0.80%、29.21%、54.68%、38.17%、58.84%和6.25%,消化能(digestible energy,DE)为5.69 MJ·kg~(-1) DM;Arg、His、Ile、Leu、Met、Lys、Phe、Thr和Val全肠表观消化率分别为89.98%、87.16%、82.54%、84.31%、72.40%、83.77%、83.63%、75.81%和83.84%。综上可知,晒干大黑山薏苡全株的营养物质尤其是粗蛋白质和钙含量较高,纤维组分构成较合理,且其营养物质尤其是氨基酸在生长肉兔上的消化率较高。因此,从化学组成和营养物质消化利用角度看,大黑山薏苡全株可作为粗饲料用于家兔生产。
[Abstract]:In order to expand the forage source of rabbits, this study evaluated the effect of the whole plant of Coix lacryma-jobi cv.Daheishan (dried in the sun) on the nutritional value of growing meat rabbits, which was selected by the Corn Research Institute of Sichuan Agricultural University. Based on the composition of analytical chemistry, 24 healthy French Eira rabbits with the same genetic background and similar body weight (1 107.00 卤98.42) g were randomly divided into two groups (12 rabbits in each group). Single cage was fed in 60cm 脳 60cm 脳 45cm, fed with basic feed (100%) and experimental diet (85% basal diet, 15% Coix lachryma L.) respectively. The digestion test was carried out in vivo. The experimental period was 11 days (7 days). The collection period is 4 d). The results showed that the content of dry matter (dry matter,DM) was 88.46. In terms of DM, total energy (gross energy,GE), crude protein (crude protein,CP), crude fiber (crude fiber,CF), neutral detergent fiber (neutral detergent fiber,NDF), acid detergent fiber (acid detergent fiber,ADF), acid detergent lignin (acid detergent lignin,ADL), The contents of nitrogen-free extract (nitrogen free extract,NFE), crude fat (ether extract,EE), crude ash (crude ash,Ash), calcium (calcium,Ca) and total phosphorus (total phosphorus,TP) were 16.94 MJ kg~ (-1), 13.46% and 29.58, respectively. 62.57 and 7.01, including 1.21% and 0.20%, and 1.21% and 0.20%, arginine,Arg, histidine,His, isoleucine,Ile, leucine,Leu, The contents of methionine (DL-Methionine,Met), lysine (lysine,Lys), phenylalanine (phenylalanine,Phe), threonine (L-Thr) and valine (valine,Val) were 0.470.15 and 0.370.74, respectively. 0.14 0.41% 0.46% and 0.49%. For growing meat rabbits, the apparent digestibility of DM,GE,CP,CF,NDF,ADF,ADL,EE,Ash,Ca and TP in the whole plant of Coix was 31.67 and 30.02 and 60.09, respectively. 29.21 54.68 and 38.17%, and the digestible energy,DE is 5.69 MJ kg~ (-1) DM;. The apparent digestibility of Arg,His,Ile,Leu,Met,Lys,Phe,Thr and Val were 89.98 and 87.16, respectively, and 84.31 and 82.54, and 72.40 and 83.77 and 83.63% and 85.81% and 83.84%, respectively. It can be seen that the nutrient, especially the content of crude protein and calcium, is higher, the composition of fiber is reasonable, and the digestibility of nutrient, especially amino acid, in growing meat rabbit is higher. Therefore, from the point of view of chemical composition and nutrient digestion and utilization, the whole Coix seed strain can be used for the production of rabbits.
【作者单位】：四川农业大学动物营养研究所动物抗病营养教育部重点实验室;四川农业大学玉米研究所;
【基金】：四川省科技支撑项目(2016NZ0002) 四川农业大学“双支计划”项目
【分类号】：S829.1

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