Results 321 to 330 of about 1,089,204 (358)
Some of the next articles are maybe not open access.
Grass and Forage Science, 1993
AbstractTwo 1·0 ha plots of a late‐heading diploid perennial ryegrass (var. Contender) and a late‐heading tetraploid ryegrass (var. Condesa), and two 1·4 ha plots of the tetraploid with Aberystwyth S184 small‐leaved white clover, were direct sown in May 1987.
Swift, G +5 more
openaire +2 more sources
AbstractTwo 1·0 ha plots of a late‐heading diploid perennial ryegrass (var. Contender) and a late‐heading tetraploid ryegrass (var. Condesa), and two 1·4 ha plots of the tetraploid with Aberystwyth S184 small‐leaved white clover, were direct sown in May 1987.
Swift, G +5 more
openaire +2 more sources
Research Note:Precision and accuracy of sward height distributions
African Journal of Range and Forage Science, 2007Double normal distributions can be used to resolve many sward height frequency distributions into two components representing the 'short' (patches) and 'tall' (non-patches)areas in the sward. The effect of sample size on the precision and accuracy of parameters of sward height distributions was examined by drawing sub-samples (n = 10) of increasing ...
Morris, CD, Zacharias, PJK
openaire +1 more source
The fitting of frequency distributions to height measurements on grazed swards
Grass and Forage Science, 1986AbstractHerbage height was measured in ryegrass/white clover (Lolium perenne/Trifolium repens) swards grazed by cattle using the rising plate meter or the sward stick. Ordinary single normal and double normal distributions were fitted to the data obtained. After the first 6 weeks of continuous grazing the double normal distributions fitted data for the
M. J. GIBB, M. S. RIDOUT
openaire +1 more source
The Effect of Sward Surface Height on Ewe and Lamb Performance
Proceedings of the British Society of Animal Production (1972), 1987Sward Surface Height (SSH) can be used as a guide for grazing control and recommendations are available for target SSH at various times of the year and at different levels of performance (Hodgson et al 1986).188 mule ewes with Suffolk cross lambs were allocated to 2 target SSH, 1-6 cm and 6-8 cm. Each treatment was replicated twice and balanced for ewe
B J Keeling +3 more
openaire +1 more source
SWARD PRODUCTIVITY WITHIN MICRO‐PATTERNS OF HEIGHT AND FREQUENCY OF DEFOLIATION
Grass and Forage Science, 1975ABSTRACTAn experiment is described in which 10 cutting treatments were applied to plots of perennial ryegrass. In 4 treatments the swards were cut uniformly using one of the following regimes: cut to 15 cm every 2 weeks (regime hf); cut to 15 cm every 6 weeks (hi); cut to 5 cm every 2 weeks (If); cut to 5 cm every 6 weeks (li).
A. Smith, J. R. Macauley
openaire +1 more source
Behavioural strategies of dairy cows grazing swards of different surface heights
Proceedings of the British Society of Animal Science, 1997Sward surface height (SSH) has a significant effect on bite mass in dairy cows grazing continuously stocked pastures (Gibb et al., 1995). To compensate for this, cows must either attempt to maintain intake rate by increasing bite rate, or increase the total time spent eating.
M.J. Gibb +3 more
openaire +1 more source
Canopy Characteristics of Continuously Stocked Limpograss Swards Grazed to Different Heights
Agronomy Journal, 2003Vertical heterogeneity in herbage bulk density, plant‐part proportion, and nutritive value is common in canopies of C4 grasses. Changes from top to bottom of the canopy affect performance of cattle (Bos ssp.) grazing limpograss [Hemarthria altissima (Poir.) Stapf & Hubb.], but this variation has not been described under continuous stocking.
Yoana C. Newman +2 more
openaire +1 more source
Variation of pecking rate with sward height in wild wigeon Anas penelope
Journal of Ornithology, 2006We examined how pecking rate changed with sward height in wintering European wigeon Anas penelope in a nature reserve of the French Atlantic coast. Pecking rates were recorded as the time taken to perform 10 or 50 pecks. We found a negative correlation between pecking rate and sward height over a range of heights from 1.0 to 3.5 cm, but no sex effect ...
Durant, Daphné, Fritz, Hervé
openaire +3 more sources
Proceedings of the British Society of Animal Production (1972), 1987
Experiments designed to test animal responses to sward manipulation suggest that ewe performance and lamb growth are positively related to herbage mass and thus sward height (1,2,3,). From this component research, it is suggested that to maximise herbage production and animal performance during the main grazing season, sward heights should be ...
M. Lloyd +4 more
openaire +1 more source
Experiments designed to test animal responses to sward manipulation suggest that ewe performance and lamb growth are positively related to herbage mass and thus sward height (1,2,3,). From this component research, it is suggested that to maximise herbage production and animal performance during the main grazing season, sward heights should be ...
M. Lloyd +4 more
openaire +1 more source
Grass and Forage Science, 1997
An experiment was carried out to compare the effects of two compressed sward height treatments, each at two fertilizer nitrogen (N) treatments (0 and 50 kg ha−1 in spring), on the date of turnout and liveweight gain of steers grazing a perennial ryegrass/white clover (Lolium perenne/Trifolium repens) sward sited on clay loam in south‐west England.
R. H. Johnson, J. Morrison
openaire +1 more source
An experiment was carried out to compare the effects of two compressed sward height treatments, each at two fertilizer nitrogen (N) treatments (0 and 50 kg ha−1 in spring), on the date of turnout and liveweight gain of steers grazing a perennial ryegrass/white clover (Lolium perenne/Trifolium repens) sward sited on clay loam in south‐west England.
R. H. Johnson, J. Morrison
openaire +1 more source