Nutritive Value of Ozone Sensitive and Resistant Ladino White Clover Clones after Chronic Ozone and Carbon Dioxide Exposure1

2015 ◽  
pp. 153-167 ◽  
Author(s):  
J. C. Burns ◽  
Allen S. Heagle ◽  
Dwight S. Fisher
Keyword(s):  
Carbon Dioxide ◽  
White Clover ◽  
Nutritive Value

Effect of Free Air Carbon dioxide Enrichment (FACE) on the chemical composition and nutritive value of wheat grain and straw

2009 ◽  
Vol 149 (3-4) ◽  
pp. 322-332 ◽  
Author(s):  
F. Porteaus ◽  
J. Hill ◽  
A.S. Ball ◽  
P.J. Pinter ◽  
B.A. Kimball ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Chemical Composition ◽  
Nutritive Value ◽  
Carbon Dioxide Enrichment ◽  
Wheat Grain ◽  
Free Air

scholarly journals Milksolids production from different combinations of perennial ryegrass and white clover cultivars: II Milksolids production and farm profitability

2001 ◽  
pp. 97-102 ◽  
Author(s):  
S.L. Woodward ◽  
K.A. Macdonald ◽  
W.A. Carter ◽  
J.P.J. Eerens ◽  
J.R. Crush
Keyword(s):  
Perennial Ryegrass ◽  
White Clover ◽  
Nutritive Value ◽  
Block Design ◽  
Previous Season ◽  
Farm Profitability ◽  
Dry Conditions ◽  
The Difference ◽  
Clover Content ◽  
Friesian Cows

1999/2000 and 2000/2001 were the first two complete seasons of a replicated farm systems trial designed to measure the effects on whole farm profitability (Economic Farm Surplus (EFS) of mixtures of ryegrasses and white clovers released on to the market recently, or at least 15 years ago, and rotationally grazed by dairy cows. All the pastures were sown in late autumn 1998. There were four treatments with all combinations of 1980s (80R), and late 1990s (98R) ryegrasses, and 1960s (60C)and late 1990s (98C) white clovers, each replicated 3.0 times in a randomised block design giving twelve 4-ha, self-contained farmlets stocked with three Friesian cows/ha. Milksolids production was unaffected by either ryegrass or clover cultivar age, but there was a significant ryegrass x clover cultivar interaction reflected as higher milksolids production on the 80R/98C treatment than the 98R/98C treatment in 1999/2000. This was a result of a higher clover content in the 80R/98C pastures compared with other treatments. Although the difference in clover content was still present in 2000/2001, the wetter summerÂ-autumn meant the ryegrass maintained a higher nutritive value than in the previous season under dry conditions, so clover content did not affect milksolids production in 2000/2001. There were no main treatment effects on EFS in either season, but there was a significant ryegrass x clover interaction in 1999/2000 shown as a higher EFS on the 80R/98C treatment than on the 98R/98C treatment. Keywords: cultivars, dairying, Economic Farm Surplus, milksolids, perennial ryegrass, white clover

Temperature and Carbon Dioxide Effects on Nutritive Value of Rhizoma Peanut Herbage

Crop Science ◽  
2005 ◽  
Vol 45 (1) ◽  
pp. cropsci2005.0316 ◽  
Author(s):  
Y. C. Newman ◽  
L. E. Sollenberger ◽  
K. J. Boote ◽  
L. H. Allen ◽  
J. C. V. Vu ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Nutritive Value ◽  
Rhizoma Peanut

Autumn-Grazed Orchardgrass-White Clover Pasture: Nutritive Value of Herbage and Lamb Performance

jpa ◽  
1998 ◽  
Vol 11 (1) ◽  
pp. 85-91 ◽  
Author(s):  
K. E. Turner ◽  
D. P. Belesky ◽  
J. M. Fedders ◽  
M. B. Solomon
Keyword(s):  
White Clover ◽  
Nutritive Value ◽  
Clover Pasture

Productivity of S. 59 red fescue with and without S. 184 white clover under hill conditions: 2. Herbage measurements in relation to animal performance

1975 ◽  
Vol 84 (2) ◽  
pp. 273-280 ◽  
Author(s):  
D. A. Davies
Keyword(s):  
White Clover ◽  
Nutritive Value ◽  
Live Weight ◽  
Early Spring ◽  
Animal Performance ◽  
Red Fescue ◽  
Rapid Fall ◽  
Herbage Quality ◽  
Weight Gains ◽  
Digestible Organic Matter

SUMMARYHerbage availability, intake and nutritive value were recorded on swards of S. 59 red fescue (Festuca rvbra L.) and S. 23 perennial ryegrass (Lolium perenne L.), with and without S. 184 white clover (Trifolium repens L.), and correlated with animal performance. Intake of dry matter was similar on all treatments. Animal live-weight gains during 1969 were positively correlated with digestible organic matter intake (DOMI).Poor animal performance from red fescue swards in mid-summer was attributed to the rapid fall in digestibility at this time which affected DOMI.Differences between treatments in efficiency of conversion of DOMI into live-weight gains were observed. Superior conversion ratios in swards containing clover could not be related to any of the herbage quality measurements recorded.Better animal productivity from red fescue swards in early spring and in late autumn were related to the longer growing season of this grass.The merits and demerits of red fescue as a grass for hill conditions and the possibility of reducing its limitations by breeding are discussed.

Degradability of crude protein from clover herbages used in irrigated dairy production systems in northern Victoria

2001 ◽  
Vol 52 (3) ◽  
pp. 415 ◽  
Author(s):  
D. C. Cohen
Keyword(s):  
Protein Content ◽  
White Clover ◽  
Crude Protein ◽  
Nutritive Value ◽  
Subterranean Clover ◽  
Trifolium Subterraneum ◽  
Crude Protein Content ◽  
Persian Clover ◽  
Protein Supply ◽  
In Sacco

An in sacco (nylon bag) technique was used to estimate the degradability of dry matter (DM) and crude protein, and to estimate the effective rumen degradability of protein (ERDP), for 3 irrigated clover herbages. Pasture characteristics (nutritive values and leaf: stem ratios) were also described, and relationships to ERDP established. The nutritive value characteristics and degradabilities of white clover (Trifolium repens L.), Persian clover (Trifolium resupinatum L.), and subterranean clover (Trifolium subterraneum L.) were also compared for various regrowth periods (of 3, 4, 6, and 12 weeks). Nutritive value characteristics of clover herbages varied from 9.9 to 11.9 MJ/kg DM for metabolisable energy, 153 to 304 g/kg DM for crude protein, and 209 to 377 g/kg DM for neutral detergent fibre. The leaf: stem ratio correlated well with the crude protein content of the clovers, with herbages consisting of more leaf generally having superior crude protein content (R2 = 0.64, P < 0.001). The effective rumen degradability of protein for clover herbages ranged from 60 g/kg DM for mature (12 week regrowth) subterranean clover to 195 g/kg DM for vegetative (3 weeks regrowth) Persian clover. For clover herbages with a 3-week regrowth period, after initial cutting to 5 cm, and at ruminal outflow rates of 0.08/h, the effective rumen degradability of protein varied from 136 to 195 g/kg DM. A positive relationship between crude protein and ERDP (R2 = 0.82) suggested that ERDP could be estimated for clover herbages that have been previously assessed for crude protein content, obviating the need for in sacco studies. Calculated degradabilities were lower for all clovers when higher ruminal outflow rates were assumed. Using the metabolisable protein system, metabolisable protein supply and metabolisable protein in excess of animal requirements were calculated. Ruminal losses of nitrogen were also estimated for cows consuming white clover of varying regrowth periods in both early and late lactation. It was concluded that metabolisable protein supply is unlikely to limit production in these examples. At regrowth periods of 3 weeks, metabolisable protein contributions from microbial and dietary sources were similar, and twice that required by the animal. Ruminal losses of nitrogen were substantial and amounted to 66—23% of nitrogen intake. In the experiments reported here, if all of the energy required to excrete excess protein (as urea) could instead be used for the production of milk, cows may have produced 0.5mp;mdash;2.0 kg more milk per day. Such losses could potentially be reduced if the protein content and/or degradabilities of clover herbages were reduced, and/or energy rich supplements were offered.

Sign in / Sign up

Export Citation Format

Share Document