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  • 1
    Electronic Resource
    Electronic Resource
    The estimation of herbage mass of perennial ryegrass swards: a comparative evaluation of a rising-plate meter and a single-probe capacitance meter calibrated at and above ground level (1983)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 38 (1983), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A rising-plate meter and a single-probe capacitance meter were calibrated on perennial ryegrass swards (cultivars S23, Endura, Melle) over the spring and summer (13 March to 14 September 1981). The swards were rotationally grazed by cattle and from mid-June onwards they were irrigated and cut at 5 cm after grazing to remove rejected herbage. Linear regressions were calculated relating meter readings to herbage dry matter mass as measured by cutting 0–2 m2 quadrats to either 18 mm above ground or to ground level.The regression for the rising-plate meter was constant over the spring (slope 275 kg DM ha−1 cm−1) and again over the summer (slope 385 kg DM ha−1 cm−1). The regression for the capacitance meter changed slightly over the spring (slope 11.2 to 14.0 kg DM ha−1 unit reading−1) and was also constant over the summer (slope 20.3 kg DM ha−1 unit reading −1). Correlation coefficients were always above 09 and residual standard deviations ranged from 258–525 in Spring up to 636–918 kg DM ha−1 in summer. Residual standard deviations were lower with the plate meter than with the capacitance meter and were lower with the above-ground cutting height. Neither meter was able to give accurate results with tall rejected herbage containing a build-up of senescent material.Herbage mass below 18 mm was greater on summer than spring swards. When compared with a ground level cut. cutting above ground underestimated herbage mass on summer relative to spring swards; there was also a tendency to underestimate herbage mass on tall pastures relative to short pastures.There was no evidence of a curved relationship between herbage mass and meter reading with either meter and both meters gave readings related to herbage dry matter mass rather than mass of green herbage or water.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1983.tb01652.x
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  • 2
    Electronic Resource
    Electronic Resource
    NUTRITION OF THE LAMB (1959)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 14 (1959), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1959.tb01018.x
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  • 3
    Electronic Resource
    Electronic Resource
    SIDEWAYS CREEP GRAZING FOR INTENSIVE LAMB PRODUCTION (1959)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 14 (1959), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: An experiment is described in which folding and sideways creep-grazing was compared with a rotational grazing management for lamb production at pasture.The experiment was carried out in two years (1957 and 1958) using a stocking-rate of 7 ewes and 12 lambs per acre from the birth of the lambs until they had all been sent for slaughter.The folding management produced more liveweight gain per acre (955 and 983 Ib.) than the rotational management (870 and 926 Ib.) and the mean carcass-weights were higher.The biggest differences, in favour of the sideways creep-grazing system, were in tbe quality of the carcass produced. Folding produced 74% and 77% grade A carcasses and the rotational management 43% and 53%, respectively, in 1957 and 1958.Worm-infestation was considerably less under the folding management and parasite control appeared to be more efFective where the area reserved for lambs only was not expanded to include ewe-grazed pasture as the season progressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1959.tb00990.x
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  • 4
    Electronic Resource
    Electronic Resource
    A POINT-QUADRAT METHOD FOR THE DESCRIPTION OF PASTURE IN TERMS OF HEIGHT AND DENSITY (1957)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 12 (1957), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The definition of pasture height is discussed and it is suggested that a meaningful and objective measurement of height must be related to the distribution of density. A point-quadrat method for determining such a “height index” is described and the uses and limitations of the method are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1957.tb00977.x
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  • 5
    Electronic Resource
    Electronic Resource
    THE GROWTH OF LAMBS AT PASTURE (1957)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 12 (1957), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: A preliminary experiment was carried out to investigate methods of maintaining short and long swards, and to measure the effect of height of sward on the growth of lambs. Differences in sward height did not occur until mid-June: no marked differences in lamb growth, due to sward height, were observed. The effects of stocking rate and worm infection are discussed and conclusions are drawn concerning the design of experiments of this nature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1957.tb00978.x
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  • 6
    Electronic Resource
    Electronic Resource
    THE GROWTH OF LAMBS AT PASTURE (1964)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 19 (1964), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Two groups of ewes, each containing single and twin lambs, were folded over a ‘worm-free’ pasture, with a creep provided for the lambs, allowing them to graze ahead of the ewes. The lambs of one group received supplementary feeding. Higher growth rates of the Iambs were recorded than those previously reported by other workers. The growth rates of twin lambs were improved more than those of singles and the lambs receiving supplementary feeding gained at a significantly faster rate than those on pasture only. Faecal egg counts indicated that worm infestation in the lambs was maintained at a very low level.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1964.tb01195.x
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  • 7
    Electronic Resource
    Electronic Resource
    THE GROWTH OF LAMBS AT PASTURE (1965)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 20 (1965), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Data on the growth rates of ‘worm-free’ Iambs were collected at different seasons over 4 years. In 1959 and 1960 the Iambs were set-stocked on a perennial ryegrass/white-clover sward, and in 1961 and 1962 lambs were rotationally grazed on a pure S23 perennial rye-grass sward. Although significant differences were obtained between seasons, there was no correlation between lamb growth rate and any one factor of herbage quality or environment.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1965.tb00407.x
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  • 8
    Electronic Resource
    Electronic Resource
    THE GROWTH OF LAMBS AT PASTURE (1964)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 19 (1964), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: The two years' experiments described compared the growth of suckling lambs on ‘long’ and ‘short’ ryegrass swards. The animals were carried at a moderate stocking rate. Differences in sward height were established before grazing began and were maintained throughout each season. There were no significant differences in lamb growth between treatments. The structures of the swards are discussed in relation to the results, and the possible effect of differences in parasitic infestation on ‘long’ and ‘short’ swards is considered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1964.tb01171.x
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  • 9
    Electronic Resource
    Electronic Resource
    An investigation into the use of ranked set sampling on grass and grass-clover swards (1985)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 40 (1985), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Four experiments were conducted to assess the performance of ranked set sampling relative to random sampling for the estimation of herbage mass and clover content in grazed swards. The expected theoretical efficiencies were not observed due to the method of selection of quadrats and the nature of the distribution of herbage mass. Nevertheless there should be worthwhile improvement in precision over random sampling, provided that the quadrats within a set are as well spaced as possible, allowing, if necessary, for visual comparison.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1985.tb01753.x
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  • 10
    Electronic Resource
    Electronic Resource
    LAMB PRODUCTION FROM TWO SIMPLE MIXTURES UNDER TWO METHODS OF MANAGEMENT (1956)
    Oxford, UK : Blackwell Publishing Ltd
    Grass and forage science 11 (1956), S. 0 
    Details
    ISSN: 1365-2494
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2494.1956.tb00077.x
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