Journal of Agricultural Science

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A revised model for the estimation of protein degradability in the rumen
Journal of Agricultural Science - Tập 96 Số 1 - Trang 251-252 - 1981
I. McDonald
Estimates of the degradability of protein in the rumen are essential for the application of new systems which have been suggested for the evaluation of the protein requirements of ruminants (Agricultural Research Council, 1980). The effective percentage degradability (P) of protein supplements in the rumen is dependent not only on the course of degradation of the protein particles in the rumen, bu... hiện toàn bộ
Species, climate and fertilizer effects on grass fibre and protein in tropical environments
Journal of Agricultural Science - Tập 147 Số 5 - Trang 555-568 - 2009
H. TRAN, P. SALGADO, P. LECOMTE
The prediction of pig carcass composition from measurements of carcass density
Journal of Agricultural Science - Tập 61 Số 1 - Trang 9-18 - 1963
D. W. Holme, W. E. Coey, K. L. Robinson
1. Two cuts, the leg and the loin, were taken from the right sides of 102 pig carcasses. Their densities were determined by weighing in air and in water and the cuts were dissected into fat, muscle, bone, skin and connective tissue. Samples of the muscular and fatty tissues were taken to obtain a measure of the analytically determined fat content. The weights of each tissue were expressed as a per... hiện toàn bộ
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 fed once daily, a significant effect, pro... hiện toàn bộ
Utilization of fish protein hydrolysates in milk substitutes for lambs
Journal of Agricultural Science - Tập 93 Số 1 - Trang 37-46 - 1979
H. S. Soliman, E. R. Ørskov, Ian Mackie
SUMMARYMale and female (Suffolk × (Finnish Landraee × Dorset Horn)) lambs were used in three experiments to examine the replacement of milk by undried and dried fish protein hydrolysates (FPH), a mixture of lard and coconut fat, and partially hydrolysed starch (Protamyl 110). The animals received the experimental diets from 1 week of age in Expts 1 and 2, and from 4 weeks of age in Expt 3. They we... 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 database when diet composition, nutrien... 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)2SO4 and with and without calcium carbonate (CaCO3, lime). A point, termed the change point, was n... hiện toàn bộ
The effect of genetic merit and concentrate proportion in the diet on nutrient utilization by lactating dairy cows
Journal of Agricultural Science - Tập 132 Số 4 - Trang 483-490 - 1999
C.P. Ferris, F. J. Gordon, D.C. Patterson, M. G. Porter, T. Yan
Sixty Holstein/Friesian dairy cows, 28 of high genetic merit and 32 of medium genetic merit, were used in a continuous design, 2 (cow genotypes)×4 (concentrate proportion in diet) factorial experiment. High and medium merit animals had Predicted Transmitting Abilities for milk fat plus protein yield, calculated using 1995 as the base year (PTA95 fat plus protein), of 43·3 kg and 1·0 kg respectivel... hiện toàn bộ
Cold-hardiness of olive (Olea europaeaL.) cultivars in cold-acclimated and non-acclimated stages: seasonal alteration of antioxidative enzymes and dehydrin-like proteins
Journal of Agricultural Science - Tập 147 Số 1 - Trang 51-61 - 2009
Asuman Cansev, Hatice Gülen, A. Eri̇ş
SUMMARYSeasonal patterns of antioxidative enzymes and proteins and their relations to cold-hardiness of nine olive (Olea europaeaL.) cultivars (Ascolona, Domat, Gemlik, Hojoblanca, Lecquest, Manzanilla, Meski, Samanli and Uslu) are documented in the current study. Fully expanded, uniformly sized leaves from 2-year-old shoots of the cultivars were collected from 20-year-old trees in cold-acclimated... 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 grain yield kernel weight, grain ... hiện toàn bộ
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