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首页> 外文期刊>Canadian Journal of Animal Science >Pasture productivity, cattle productivity and metabolic status following fertilization of a grassland with liquid hog manure: A three-year study
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Pasture productivity, cattle productivity and metabolic status following fertilization of a grassland with liquid hog manure: A three-year study

机译：草地猪肥液施肥后的牧场生产力，牛生产力和代谢状况：一项为期三年的研究

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Wilson, C., Undi, M., Tenuta, M., Wittenberg, K. M., Flaten, D., Krause, D. O., Entz, M. H., Holley, R. and Ominski, K. H. 2010. Pasture productivity, cattle productivity and metabolic status following fertilization of a grassland with liquid hog manure: A three-year study. Can. J. Anim Sci. 90: 233-243. Forage yield and quality, cattle and pasture productivity, and enteric methane (CH4) emissions were determined from grass pastures receiving liquid hog manure. Three treatments were evaluated: grass pastures receiving no manure (Control), grass pastures receiving liquid hog manure applied as a single application of 142 +/- 20 kg available N ha(-1) in the spring (Single) or a split application of 70 +/- 6 kg available N ha(-1) in both the spring and autumn (Split). Each treatment was represented by two paddocks. The study was carried out over three grazing seasons, from 2004 to 2006, with each grazing season divided into three, 28-d periods. Growing steers (338 +/- 32 kg) were introduced into pastures in early summer (May June) of each year. Standing biomass, measured using quadrats, averaged 1.2, 2.6, and 2.0 +/- 0.44 t dry matter (DM) ha(-1) for Control, Split and Single pastures, respectively, and was not influenced (P = 0.13) by liquid hog manure application. Liquid hog manure application caused a shift in pasture grasses resulting in a predominance of quackgrass [Elytrigia repens (L.) Nevski]. Nutrient profiles of forage samples collected by hand plucking showed no treatment response for forage gross energy (GE; P =0.18) and neutral detergent fibre (NDF; P =0.19), but forage crude protein (CP) (P =0.027) as well as ash (P =0.002), K (P =0.001), P (P =0.001), and Mg (P =0.001) concentrations increased with manure application. Liquid hog manure application did not influence dry matter intake (DMI) (P = 0.56), GE intake (P =0.58), and NDF intake (P = 0.79) of grass forages. Higher CP intake of steers on Split and Single pastures resulted in higher (P =0.001) serum urea N (5.7 and 5.9 +/- 0.42 mmol L-1, respectively) compared with steers grazing Control pastures (2.5 +/- 0.42 mmol L-1). Enteric CH4 emissions (L d(-1)) tended to be lower (P =0.09) in cattle grazing the Split pasture treatment. Though application of liquid hog manure did not improve individual animal gains, pasture carrying capacity increased (P =0.001) from 89 to 324 grazing days ha(-1) and liveweight gain increased (P =0.001) from 100 to 329 kg ha(-1) in Control and manured pastures, respectively. Application of liquid hog manure to grasslands generated significant benefits through improved forage quality and pasture productivity measured as carrying capacity and liveweight gain. Split liquid hog manure application may have a further benefit in terms of improved carrying capacity and lower enteric CH4 emissions.
机译：威尔逊，乌迪，马萨诸塞州，特努塔，马萨诸塞州维滕贝格，弗拉滕，特拉华州克劳斯，恩茨，MH，霍利河和奥明斯基，KH2010。牧场生产力，牛生产力和代谢状况在用猪肥液施肥的草原上进行的一项为期三年的研究。能够。 J.动漫科学90：233-243。从接受液态猪粪的草场中确定草料的产量和质量，牛和牧场的生产力以及肠内甲烷（CH4）的排放量。评估了三种处理方法：不施肥的草场（对照），在春季施肥（单次施用142 +/- 20 kg N N a（-1）时单独施用液态猪粪的草场，或单独施肥）。春季和秋季（分割）均提供70 +/- 6 kg N ha（-1）。每种处理均以两个围场为代表。该研究在2004年至2006年的三个放牧季节中进行，每个放牧季节分为三个28天的时期。每年初夏（6月5月）在牧场上引入越来越多的公牛（338 +/- 32千克）。常规牧场，常规牧场和单一牧场的静置生物量平均使用干重（DM）ha（-1）分别为1.2、2.6和2.0 +/- 0.44 t干物质（DM）ha（-1），并且不受液体的影响（P = 0.13）猪粪施用。液体猪粪肥的施用引起了牧草的转移，从而导致了魁克草的出现[Elytrigia repens（L.）Nevski]。手工采食的饲料样品的营养成分显示，对饲料总能量（GE; P = 0.18）和中性洗涤剂纤维（NDF; P = 0.19）没有处理反应，但对饲料粗蛋白（CP）（P = 0.027）也无反应随着施肥量的增加，灰分（P = 0.002），钾（P = 0.001），磷（P = 0.001）和镁（P = 0.001）升高。施用液态猪粪肥不会影响草料的干物质摄入量（DMI）（P = 0.56），GE摄入量（P = 0.58）和NDF摄入量（P = 0.79）。与放牧对照牧场（2.5 +/- 0.42 mmol L）相比，分割牧场和单一牧场的ste牛皮的CP摄入量更高（P = 0.001），血清尿素氮更高（分别为5.7和5.9 +/- 0.42 mmol L-1）。 -1）。放牧斯普利特牧场的牛的肠内CH4排放量（L d（-1））较低（P = 0.09）。虽然应用液态猪粪肥不能提高个体动物的增重能力，但牧场的承载能力从89放牧天ha（-1）增加了（P = 0.001）ha（-1），而活重增加了（P = 0.001）从100 kg到329 kg ha（- 1）分别在对照牧场和牧场中。通过提高草料质量和牧场生产力（以承载力和活体增重衡量），液态猪粪肥在草地上的应用产生了巨大的收益。在提高承载能力和降低肠内CH4排放方面，采用分液猪粪肥施用可能会进一步受益。

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