Evaluation of Pasture Quality of Elevit Plateau (Rize-Çamlıhemşin)

With the decline in pasture quality in southern Australia, the development of management strategies to improve nutrient supply for grazing animals is essential and requires a clear understanding of the interaction between animals and plants. The impact of grazing intensity on the morphology of subterranean clover was previously examined. This paper reports the effect of grazing intensity on the nutritive value of subterranean clover, and the variation in quality of cultivars during the growing season. Grazing intensity influenced nutritive value and interacted with cultivar maturity. Heavy grazing depressed dry matter digestibility (DMD) by 5 percentage units in October for early maturity cultivars but increased DMD by 3 percentage units in September for mid maturity cultivars. The influence of grazing intensity on nitrogen content was small. Heavy grazing did not affect acid detergent fibre for the early maturity group, but depressed it for the mid maturity group throughout the season. Acid detergent lignin remained comparable for all cultivars during the season. Mineral content of subterranean clover showed variable response to grazing treatments. Nutritive value varied among cultivars within each maturity group. DMD ranged over 53–64%, 44–62%, and 45–53% for early, mid, and late maturity groups, respectively, at the end of the growing season. The cultivar rank in all nutritional parameters changed with the progress of the season. The large ranges in the decline rate of DMD within each maturity group during the last 8 weeks of growth gave an indication of the potential quality of the cultivars during late spring and early summer. Despite the variation in mineral content there were no cultivars in which the concentration of minerals was below the minimum requirements of sheep. These results indicate that there is a potential for the selection of high quality cultivars within a breeding program, and that indicative targets of grazing intensity need to be further developed with a focus on pasture quality.

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Annual dry matter, metabolisable energy and nitrogen yields of six dryland pastures six and seven years after establishment

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.2010.72.2805 ◽

2010 ◽

pp. 177-184 ◽

Cited By ~ 8

Author(s):

A. Mills ◽

D.J. Moot

Keyword(s):

White Clover ◽

Dry Matter ◽

Subterranean Clover ◽

Trifolium Subterraneum ◽

Pasture Quality ◽

N Yield ◽

Nitrogen Yields ◽

Metabolisable Energy ◽

Lincoln University

Dry matter (DM) yields, botanical composition, liveweight production and pasture quality of six grazed dryland pastures established in 2002 at Lincoln University, Canterbury, are reported for Years 6 (2007/08) and 7 (2008/09). Lucerne (Medicago sativa) yielded 14.0 t DM/ha/yr and sheep liveweight (LW) production totalled 903 (2007/08) and 1 141 kg/ha/yr (2008/09). Metabolisable energy (ME) on offer (~134 GJ/ha/yr) and N yield (>500 kg/ha/yr) from the lucerne exceeded those of grass-based pastures. Yields (9.8- 11.2 t DM/ha/yr) and liveweight production (814-912 kg/ha/yr) from cocksfoot (Dactylis glomerata) pastures established with subterranean (Trifolium subterraneum) clover were greater than all other grass-based pastures. Annual ME was 79-96 GJ/ha and N yield was 269- 316 kg/ha from the cocksfoot, subterranean clover and volunteer white clover (T. repens) components. For Year 7, the contribution of unsown weeds and grasses in cocksfoot-based pastures was ~28% of total annual yield compared with 55% in ryegrass (Lolium perenne)/ white clover pastures. Consequently, the ME and N yields from sown pasture components in ryegrass/white clover pastures were lower than those from cocksfootbased pastures. These results indicate dryland farms with lucerne and/or cocksfoot/sub clover pastures can produce higher DM yields from more persistent pasture species. Persistence led to more ME and N on offer to grazing livestock, which resulted in higher liveweight production than from the ryegrass pastures. Keywords: balansa clover, Caucasian clover, growth rates, pasture quality, T. ambiguum, T. michelianum

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Effect of date and length of closure and post grazing residual on pasture quality for silage

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.1998.60.2298 ◽

1998 ◽

pp. 259-264

Author(s):

J.M. Mcgrath ◽

J.W. Penno ◽

K.L. Davis ◽

R. Wrenn

Keyword(s):

Dairy Cows ◽

Dry Matter ◽

Nutritional Value ◽

Farming Systems ◽

Botanical Composition ◽

Pasture Quality ◽

Lactating Dairy Cows ◽

Metabolisable Energy ◽

Made In

The nutritional value of pasture silage made in New Zealand is often sub-optimal for lactating dairy cows. As farming systems require more pasture silage to be used in an attempt to increase lactation lengths and milksolids production per cow, the quality of this silage becomes more important. In spring 1995, pastures were closed for silage at weekly intervals from 11 September to 17 October, representing six distinct closure dates, to determine the effect that date and length of closure has on pasture quality. In spring 1997 pastures were grazed to different residuals (1.2- 1.4, 1.8-2.0, 2.1-2.4 and 2.5-2.9 t DM/ha) and then closed for silage to determine the effect that post grazing residual has on pasture quality. In both experiments pasture dry matter (DM) yield and chemical and botanical composition was monitored over the 63 day closure. Pasture closed on 11 or 17 September had higher metabolisable energy (ME) (P

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Improving summer and autumn feed quality in New Zealand hill country

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.2014.76.2956 ◽

2014 ◽

Vol 76 ◽

pp. 145-148

Author(s):

G.M. Rennie ◽

W.Mcg King ◽

T.L. Knight ◽

B. Devantier ◽

C.J. Hoogendoorn

Keyword(s):

Early Summer ◽

Late Spring ◽

Hill Country ◽

Pasture Quality ◽

Herbage Quality ◽

Dead Material ◽

Hill Farming ◽

Cutting Height ◽

Clover Content

Abstract Management of late spring surpluses to restrict reproductive growth can increase the quality of hillcountry pastures during summer and autumn. This occurs through a reduction in accumulated stem and dead material and an increase in clover content. However, there is little information on the magnitude and longevity of these effects. This trial investigated the effects of four late spring defoliation intensities on herbage quality, measured at the end of spring and during summer. Treatments were applied through regular cutting of hill pastures in areas of medium fertility and slope on two aspects in each of four geo-climatically different hill-farming regions over two years. Pasture herbage quality at the end of spring followed expected trends: defoliation to low residual pasture height led to higher quality herbage. The maximum difference in quality between the lowest cutting height and nil cutting at this time was nearly 2 MJME/kg DM. With a change to uniform cutting height across all plots in early summer, these pasture quality differences reduced and disappeared. Keywords: Pasture quality, hill country, grazing management

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Assessing the Wall-To-Wall Spatial and Qualitative Dynamics of the Brazilian Pasturelands, between 2010 and 2018, Based on the Analysis of the Landsat Data Archive

10.20944/preprints202112.0467.v1 ◽

2021 ◽

Author(s):

Claudinei Oliveira-Santos ◽

Vinicius Vieira Mesquita ◽

Leandro Leal Parente ◽

Alexandre de Siqueira Pinto ◽

Laerte Guimaraes Ferreira

Keyword(s):

Temporal Dynamics ◽

Spatial Dynamics ◽

Limited Resource ◽

Change Scenario ◽

The North ◽

Pasture Quality ◽

Spatio Temporal ◽

Pasture Area ◽

Degraded Pastures

The Brazilian livestock is predominantly extensive, with approximately 90% of the production being sustained on pasture, which occupies around 20% of the territory. In the current climate change scenario and where cropland is becoming a limited resource, there is a growing need for a more efficient land use and occupation. It is estimated that more than half of the Brazilian pastures have some level of degradation; however there is still no mapping of the quality of pastures on a national scale. In this study, we mapped and evaluated the spatio-temporal dynamics of pasture quality in Brazil, between 2010 and 2018, considering three classes of degradation: Absent (D0), Intermediate (D1), and Severe (D2). There was no variation in the total area occupied by pastures in the evaluated period, in spite of the accentuated spatial dynamics, with a retraction in the center-south and expansion to the north, over areas of native vegetation. The percentage of non-degraded pastures increased ~12%, due to the recovery of degraded areas and the emergence of new pasture areas as a result of the prevailing spatial dynamics. However, about 44 Mha of the pasture area is currently severely degraded. The dynamics in pasture quality were not homogeneous in property size classes. We observed that in the approximately 2.68 million properties with livestock activity, the proportion with quality gains was twice as low in small properties compared to large ones, and the proportion with losses was three times greater, showing an increase in inequality between properties with more and less resources (large and small, respectively). The areas occupied by pastures in Brazil present an unique opportunity to increase livestock production and make available areas for agriculture, without the need for new deforestation in the coming decades.

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The Management of Pastures for Grazing

Outlook on Agriculture ◽

10.1177/003072709502400307 ◽

1995 ◽

Vol 24 (3) ◽

pp. 167-177 ◽

Cited By ~ 3

Author(s):

Michael L. Smetham

Keyword(s):

Green Leaf ◽

Rotational Grazing ◽

Pasture Management ◽

Seasonal Differences ◽

Maximum Productivity ◽

Pasture Quality ◽

Dead Material ◽

Animal Feeding ◽

Temperate Climates

This article examines pasture management in moist temperate climates, and looks at the reasons why putting the findings into practice has been so difficult. Many factors affect the behaviour of the animal-pasture system, including whether continuous or rotational grazing is practised, the intensity of grazing, and seasonal differences in climate and grass reproduction. Pasture quality is defined in terms of green leaf and dead material: the amount of green leaf present in a pasture is of prime importance in determining the productivity of the canopy and its value for animal feeding, while the presence of dead material can interfere with herbage productivity and also reduce the quality of the sward for animals. Pastures and grazing animals interact strongly with each other, and maximum productivity depends on achieving a balance.

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Estimating pasture quality of Mediterranean grasslands using hyperspectral narrow bands from field spectroscopy by Random Forest and PLS regressions

Computers and Electronics in Agriculture ◽

10.1016/j.compag.2021.106614 ◽

2022 ◽

Vol 192 ◽

pp. 106614

Author(s):

Jesús Fernández-Habas ◽

Mónica Carriere Cañada ◽

Alma María García Moreno ◽

José Ramón Leal-Murillo ◽

María P. González-Dugo ◽

...

Keyword(s):

Random Forest ◽

Pasture Quality ◽

Field Spectroscopy ◽

Mediterranean Grasslands ◽

Narrow Bands

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Pasture quality of Panicum maximum cv. Tanzania subjected to different rest periods for milk production

African Journal of Agricultural Research ◽

10.5897/ajar2018.13252 ◽

2018 ◽

Vol 13 (40) ◽

pp. 2173-2182

Author(s):

Chambela Neto Alberto ◽

Fernando Coelho da Silva Jose ◽

Borges Deminicis Bruno ◽

Ramalho Haddade Ismail ◽

Haddad Souza Vieira Gustavo ◽

...

Keyword(s):

Milk Production ◽

Panicum Maximum ◽

Pasture Quality ◽

Rest Periods

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Estimating Pasture Quality of Fresh Vegetation Based on Spectral Slope of Mixed Data of Dry and Fresh Vegetation—Method Development

Remote Sensing ◽

10.3390/rs70608045 ◽

2015 ◽

Vol 7 (6) ◽

pp. 8045-8066 ◽

Cited By ~ 11

Author(s):

Rachel Lugassi ◽

Alexandra Chudnovsky ◽

Eli Zaady ◽

Levana Dvash ◽

Naftaly Goldshleger

Keyword(s):

Method Development ◽

Mixed Data ◽

Spectral Slope ◽

Pasture Quality

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EVALUATION OF PASTURE QUALITY UNDER NEW ZEALAND CONDITIONS

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.1970.32.1296 ◽

1970 ◽

pp. 61-68

Author(s):

M.J. Ulyatt

Keyword(s):

New Zealand ◽

Perennial Ryegrass ◽

Nutritive Value ◽

High Quality ◽

Pasture Quality ◽

Medium Quality ◽

Suitable Index

Pasture quality has been defined as a function of both intake and nutritive value. Results of New Zealand work on the quality of individual pasture species is collated. All grasses studied were of higher quality than perennial ryegrass and the legumes were higher again than the grasses. Possible reasons for these differences are considered. The role of digestibility in defining pasture quality has been examined and 'it was concluded that digestibility is a useful index for low and medium quality herbage, but is of limited use for high quality herbage. Consideration is given to the choice of a suitable index for high quality herbages.

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