The Output of Pasture and Its Measurement

Linehan, Peter; Lowe, J.

doi:10.1111/j.1365-2494.1946.tb00377.x

Cited by 32 publications

(22 citation statements)

References 5 publications

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“…In order to determine the accuracy of the cutting technique and of the estimation of herbage consumption, full errors were calculated from the cutting and sampling data in 1950, Variation within the individual plot samples expressed as the coefficient of variation averaged 22*5 per cent for the pre-entry samples and 5O-5 per cent for the residue samples. Increasing variability in mean yield was found in swards of decreasing output; a result in general agreement with those of BOYD (4), GREEN (7) and LINEHAN et al (12). " Error percentages " (standard error of mean X 100-^mean) for the data of the entire season were, pre-entry samples 80 per cent, residue samples 17*8 per cent, and apparent consumption of dr>' matter 13"5 per cent.…”

Section: Herbage Productionsupporting

confidence: 87%

“…Increasing variability in mean yield was found in swards of decreasing output; a result in general agreement with those of BOYD (4), GREEN (7) and LINEHAN et al (12). " Error percentages " (standard error of mean X 100-^mean) for the data of the entire season were, pre-entry samples 80 per cent, residue samples 17*8 per cent, and apparent consumption of dr>' matter 13"5 per cent.…”

Section: Herbage Productionsupporting

confidence: 74%

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Grassland Production and Its Measurement. Using the Dairy Cow

Castle¹

1953

Grass and Forage Science

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The experiment to be described in this paper was designed with a twofold purpose in view. Firstly, to test on a field scale an original method of using milking cattle for measuring the productivity of grassland, and secondly to make an attempt at determining the potential milk producing capacity of well managed grassland, under practical conditions.The recording of the output of milk from grassland in critical field trials has not been widely practised in Great Britain, and DAVIES and WILLIAMS (6) stress the urgent need for a simple method of assessment. The difficulties of using milk as a yardstick in measuring ihe production of grassland have been discussed previously by the author (5). EXPERIMENTAL DESIGN AND METHODS The grasslandThe experimental field, situated at Shinfield, Reading had a free-draining soil of light to medium loam overlying gravel with a series of London clays commencing at a depth of 16 ft. Patches of gravel extended almost to the surface in parts of the field and were vtry evident in dry weather. Tbe results of analyses of soil samples taken on 28 April 194.S and 21 March 1950 respectively, were pH, 5-7 and 7-5, lime requirement 28 cwt. CaO per ac,re and nil, available P^Os, 0-036 and 0'043, and available K2O,0-0I0 and O'OH.

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Section: Herbage Productionsupporting

confidence: 87%

Section: Herbage Productionsupporting

confidence: 74%

Grassland Production and Its Measurement. Using the Dairy Cow

Castle¹

1953

Grass and Forage Science

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“…Herbage production in SS pastures was estimated using the movable-cage technique (Brown, 1954). Calculations were based on Linehan et al (1952) as suggested by Sharrow and Motazedian (1983):…”

Section: Methodsmentioning

confidence: 99%

Set stocking, rotational grazing and forward rotational grazing by sheep on western Oregon hill pastures

Warner

Sharrow

1984

Grass and Forage Science

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Data on sheep live weights, herbage standing crop and herbage quality are presented from a 3-year grazing management study comparing set stocking, four-paddock rotational grazing and four-paddock forward rotational grazing systems. In both rotational grazing and forward rotational grazing systems, sheep were sequentially moved from one paddock to the next every 5 days. Lambs were weaned at 12-15 weeks of age in the forward rotationally grazed system and from then on grazed one paddock ahead of the ewes. Herbage mass was consistently greater on the rotationally grazed system than on the setstocked system, averaging 38-4% more herbage in 1978, 328% more in 1979 and 527% more in 1980. No differences were observed in ewe live weights at the end of the grazing year between the rotationally grazed and the set stocked systems. Live weights of rotationally grazed lambs were superior to set-stocked lambs only when herbage allowance was low; otherwise no dilTerence existed between these two systems. The forward rotationally grazed lambs generally had lower liveweights than did the rotationally grazed lambs, perhaps due to weaning stress.

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“…Segundo Walter & Evans (1979), a taxa de desaparecimento de forragem, em alguns casos, pode proporcionar estimativas acuradas do consumo de bovinos em pastejo. Todavia, Linehan & Lowe (1946), usando gaiolas e com equações diferentes da utilizada neste experimento, afirmam que o consumo de forragem pode ser superestimado quando baseado na taxa de desaparecimento da pastagem.…”

Section: Resultsunclassified

Produção de cordeiros em pastagem de azevém e trevo-branco sob diferentes níveis de resíduos de forragem

Canto

Moojen

Carvalho

et al. 1999

Pesq. agropec. bras.

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RESUMO -Na presente pesquisa, objetivou-se analisar os efeitos de diferentes níveis de resíduos de forragem na produção de cordeiros. O experimento foi estabelecido em Tupanciretã, região do Planalto Médio do Estado do Rio Grande do Sul, em uma pastagem de azevém cv. Estanzuela 284 (Lolium multiflorum Lam) + trevo-branco cv. Yi (Trifolium repens L.), submetida a diferentes níveis de resíduo de matéria seca (RMS). O delineamento experimental utilizado foi o completamente casualizado, estudando-se os níveis de RMS mantidos na pastagem de 1.119, 1.320, 1.477, 1.695, 2.146, 2.166, 2.410 e 2.483 kg de matéria seca por hectare (MS/ha). O período experimental foi de 30/09 a 08/12/1992 e os animais utilizados foram cordeiros cruza Ile de France x Corriedale desmamados aos 80 dias. Foram avaliados o ganho de peso médio diário (GMD), ganho de peso vivo/ha (GPV/ha), carga animal, animais dia/ha e a eficiência de conversão de MS em kg de peso vivo de cordeiros. Os resultados obtidos mostraram uma relação linear positiva entre o GMD e GPV/ha com o aumento nos níveis de RMS/ha, observando-se nos níveis de RMS superiores a 2.400 kg um GMD de 0,12 kg/cordeiro/dia e um GPV/ha médio de 497 kg. Não houve relação quanto à carga animal e animais.dia/ha; verificou-se uma relação linear negativa entre a eficiência de conversão de MS com os níveis de RMS estudados. Os resultados demonstram o efeito dos níveis de RMS na resposta animal.Termos para indexação: ganho de peso médio diário, ganho de peso vivo, pastejo, resíduo de matéria seca. LAMB PRODUCTION IN A MIXTURE OF ITALIAN RYEGRASS AND WHITE CLOVER UNDER DIFFERENT FORAGE MASS LEVELSABSTRACT -The objective of this research was to analyse the effects of different forage mass levels on lamb production. The experiment was conducted in Tupanciretã, Planalto Médio region at the State of Rio Grande do Sul, Brazil, in a mixture of italian ryegrass cv. Estanzuela 284 (Lolium multiflorum Lam.) + white clover cv. Yi (Trifolium repens L.), under different forage mass (FM) levels. The experimental design used was completely randommized, and the FM levels studied were: 1,119, 1,320, 1,477, 1,695, 2,146, 2,166, 2,410 and 2,483 kg/ha of dry matter (DM -kg/ha). The experimental period was from September 30 to December 8, 1992 and the animals used were cross lamb Ile de France x Corriedale early weaned (mean ± 80 days). Were evaluated the daily liveweight gain (DLG), gain per hectare (G/ha), stocking rate carryed, animals.day/ha and the DM of conversion efficience in kg of lamb liveweight. The results showed a positive linear relationship between DLG and G/ha with increased of FM levels. The FM levels higher to 2,400 kg of DM/ha reached 497 kg of total lamb liveweight gain/ha, and DLG/lamb of 0.12 kg/day. There was no FM levels effect at the stocking rate and animals.day/ha; there was a negative linear relationship between DM of conversion efficience with FM levels studied. The results show the effect of FM levels on animal response.

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The Output of Pasture and Its Measurement

Cited by 32 publications

References 5 publications

Grassland Production and Its Measurement. Using the Dairy Cow

Grassland Production and Its Measurement. Using the Dairy Cow

Set stocking, rotational grazing and forward rotational grazing by sheep on western Oregon hill pastures

Produção de cordeiros em pastagem de azevém e trevo-branco sob diferentes níveis de resíduos de forragem

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