Journal of Agricultural Science

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A comparison of feeding growing pigs once or twice daily
Journal of Agricultural Science - Tập 60 Số 3 - Trang 389-391 - 1963
R. Braude, M. Jill Townsend, G. Harrington, J. G. Rowell
1. A co-ordinated trial has been carried out at 17 centres to compare the effects on performance and carcass quality of feeding growing pigs once or twice daily.2. No significant differences were found between growth rate, efficiency of food conversion or length of pigs on the two treatments.3. Killing out percentage was on average 0·92% worse for the pigs...... hiện toàn bộ
Effects of different fat sources, technological forms and characteristics of the basal diet on milk fatty acid profile in lactating dairy cows – a meta-analysis
Journal of Agricultural Science - Tập 150 Số 4 - Trang 495-517 - 2012
A. STERK, A.M. van Vuuren, W.H. Hendriks, J. Dijkstra
SUMMARYA meta-analysis was conducted to study milk fatty acid (FA) profile in dairy cows in response to changes in dietary nutrient composition in relation to supplementation of fat sources, their technological form, addition of fish oil and main forage type in the basal diet. Data comprised 151 treatment means from 50 experiments, which were included in the databa...... hiện toàn bộ
The effect of soil acidity on potentially mobile phosphorus in a grassland soil
Journal of Agricultural Science - Tập 139 Số 1 - Trang 27-36 - 2002
R. W. McDowell, Philip C. Brookes, N. Mahieu, P. R. Poulton, A. E. Johnston, Andrew N. Sharpley
This study compared phosphorus (P) speciation and the relationship between bicarbonate extractable (Olsen) P and 0.01 M CaCl2 extractable P (a measure of potentially mobile P) in soils from plots of the Park Grass experiment started in 1856 at IACR-Rothamsted, UK and with and without nitrogen as (NH4)2SO... hiện toàn bộ
Diallel analysis of maize lines with contrasting responses to applied nitrogen
Journal of Agricultural Science - Tập 142 Số 5 - Trang 535-541 - 2004
Leonardo Oliveira Médici, Maurício Ballesteiro Pereira, Peter J. Lea, Ricardo Antunes Azevedo
Six S5 lines of maize, previously identified as having contrasting responses to nitrogen (N) supply, were used to carry out a complete series of diallel crosses. The resulting 15 hybrids were grown in a field at two N levels. The general combining ability (GCA) and specific combining ability (SCA) were estimated using the method 4, model I analysis of Griffing for grai...... hiện toàn bộ
Nitrogen metabolism in the ovine stomach: 3. Urea in the abomasal secretions
Journal of Agricultural Science - Tập 83 Số 2 - Trang 237-247 - 1974
CJF Harrop, A. T. Phillipson
SUMMARYThe effects of various stimuli on the secretion of urea and ammonia in gastric juice were examined in sheep with innervated pouches in the fundic and pyloric regions of the abomasum.Histamine, pentagastrin and feeding increased the rate of secretion and acidity of fundic juice, but had little or no effect on the concentration of urea and amm...... hiện toàn bộ
Voluntary intake and digestion of gorse (Ulex europaeus) by goats and sheep
Journal of Agricultural Science - Tập 111 Số 1 - Trang 107-114 - 1988
J.C. Howe, T. N. Barry, A.I. Popay
SummaryGorse (Ulex europaeus) was harvested in late spring, summer, autumn and winter and fed to six goats kept individually in metabolism cages for 21-day periods. The same gorse was also fed to sheep during the first two periods, but not in autumn and winter, as the hardness and sharpness of the needles caused total rejection by the she...... hiện toàn bộ
Maize yield response to a phosphorus-solubilizing microbial inoculant in field trials
Journal of Agricultural Science - Tập 153 Số 8 - Trang 1464-1478 - 2015
Mary Leggett, Nathaniel K. Newlands, David L. Greenshields, L. T. West, S. INMAN, Marja E. Koivunen
SUMMARYFindings from multi-year, multi-site field trial experiments measuring maize yield response to inoculation with the phosphorus-solubilizing fungus,Penicillium bilaiaeChalabuda are presented. The main objective was to evaluate representative data on crop response to the inoculant across a broad set of different soil, agronomic manag...... hiện toàn bộ
Effect of drought on growth and water use of sugar beet
Journal of Agricultural Science - Tập 109 Số 3 - Trang 421-435 - 1987
Kay F. Brown, A. B. Messem, R. J. Dunham, P. V. Biscoe
SummaryThe growth and water use of sugar beet affected by early (ED) and late (LD) drought was compared with that of irrigated (I) and unirrigated (NI) controls. Mobile shelters were used to exclude rain from ED plots during June and July, and LD plots during August and September, respectively, whereas outside these periods the ED and LD plots were irrigated as nec...... hiện toàn bộ
Aspects of rumen microbiology central to mechanistic modelling of methane production in cattle
Journal of Agricultural Science - Tập 146 Số 2 - Trang 213-233 - 2008
J.L. Ellis, J. Dijkstra, E. Kebreab, A. Bannink, N. E. Odongo, B.W. McBride, J. France
SUMMARYMethane, in addition to being a significant source of energy loss to the animal that can range from 0·02 to 0·12 of gross energy intake, is one of the major greenhouse gases being targeted for reduction by the Kyoto protocol. Thus, one of the focuses of recent research in animal science has been to develop or improve existing methane prediction models in ord...... hiện toàn bộ
Variability within cotton cultivars for yield, fibre quality and physiological traits
Journal of Agricultural Science - Tập 146 Số 4 - Trang 483-490 - 2008
Ioannis S. Tokatlidis, C. Tsikrikoni, J. T. Tsialtas, Anastasios Lithourgidis, Penelope J. Bebeli
SUMMARYSelection within elite cotton cultivars is ineffective; it is believed that they are genetically homogeneous. Research in other crops, however, has verified significant intra-cultivar variation based either on phenotypic differentiation or molecular analysis techniques. The present study primarily investigated possible intra-cultivar variation for seedcotton...... hiện toàn bộ
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