Nutritive Value of Pasture. VII. The Influence of the Intensity of Grazing on the Yield, Composition and Nutritive Value of Pasture Herbage (Part III).

1931 ◽  
Vol 21 (2) ◽  
pp. 267-321 ◽  
Author(s):  
H. E. Woodman ◽  
D. B. Norman ◽  
M. H. French
Keyword(s):  
Nutritive Value ◽  
Special Significance ◽  
Rotational Grazing ◽  
Stages Of Growth

The object of this series of investigations is to secure detailed information concerning the composition, digestibility and nutritive value of pasture herbage in its different stages of growth. The results which were obtained in these respects by cutting the herbage of the experimental pasture plot at weekly, fortnightly and 3-weekly intervals have been described in previous communications. During the seasons of the present investigations (1929 and 1930), the trials have been carried a stage further by the adoption of a system of cutting at monthly intervals. The results, therefore, are invested with special significance, in that a period of four weeks has been tentatively adopted in this country as the interval which is allowed to lapse, in rotational grazing practice, between successive grazings of pasture enclosures.

Mob and rotational grazing influence pasture biomass, nutritive value, and species composition

2020 ◽  
Vol 112 (4) ◽  
pp. 2866-2878
Author(s):  
Eric D. Billman ◽  
Jessica A. Williamson ◽  
Kathy J. Soder ◽  
Danielle M. Andreen ◽  
R. Howard Skinner
Keyword(s):  
Species Composition ◽  
Nutritive Value ◽  
Rotational Grazing

The effect of the pea to wheat ratio and harvest date on the voluntary feed intake,in vivodigestibility and nitrogen retention of pea-wheat bi-crop silages by sheep

2000 ◽  
Vol 2000 ◽  
pp. 81-81 ◽  
Author(s):  
A.T. Adesogan ◽  
M.B. Salawu ◽  
E.R. Deaville
Keyword(s):  
Feed Intake ◽  
Nutritive Value ◽  
Nitrogen Retention ◽  
Harvest Date ◽  
Apparent Digestibility ◽  
N Retention ◽  
Stages Of Growth ◽  
Voluntary Feed Intake ◽  
Two Stages

Pea-wheat bi-crop silages were reported to have moderate nutritive value when the proportion of peas in the sward was less than 200 g/kg (Adesoganet al., 1999). These authors also suggested that improvements in the digestibility, intake and nitrogen (N) balance of the forages may result from increasing the proportion of peas in the sward. This experiment was designed to examine this theory by determining thein vivoapparent digestibility, N retention and voluntary feed intake (VFI) in sheep of pea-wheat bi-crop silages containing different ratios of peas to wheat and harvested at two stages of growth.

The nutritive value of ensiled forages cut at three stages of growth

1989 ◽  
Vol 22 (3) ◽  
pp. 237-245 ◽  
Author(s):  
S.V. Sarwatt ◽  
M.A. Mussa ◽  
J.A. Kategile
Keyword(s):  
Nutritive Value ◽  
Stages Of Growth ◽  
Three Stages

CHEMICAL COMPOSITION AND IN VITRO DIGESTIBILITY OF RANGE FORAGE PLANTS OF THE STIPA-BOUTELOUA PRAIRIE

1967 ◽  
Vol 47 (2) ◽  
pp. 161-167 ◽  
Author(s):  
S. Smoliak ◽  
L. M. Bezeau
Keyword(s):  
Crude Protein ◽  
Nutritive Value ◽  
Calcium Content ◽  
Early Spring ◽  
In Vitro Digestibility ◽  
Native Grasses ◽  
Stages Of Growth ◽  
Artemisia Species ◽  
Shrubby Species

Five native grasses and one sedge of the Stipa-Bouteloua prairie, three introduced grasses collected at five stages of growth, and four shrubby species collected at three stages of growth were analyzed for proximate chemical constituents.The amounts of phosphorus and digestible and crude protein of all species decreased with maturity, while the cellulose increased. Introduced grasses generally contained more crude protein than native grasses. Shrubby species were higher in crude protein and phosphorus than native grasses. No consistent trend was observed in relative total ash and calcium content at progressive stages of development. The estimated nutritive value index was high for all grasses and low for two Artemisia species. The seasonal declines in crude protein and phosphorus suggest that protein and phosphorus supplements are desirable for range cattle during the fall, winter, and early spring.

Effect of stage of growth and urea addition on the preservation and nutritive value of whole crop wheat

1991 ◽  
Vol 1991 ◽  
pp. 150-150
Author(s):  
J. Hill ◽  
J.D. Leaver
Keyword(s):  
Dairy Cows ◽  
Dry Matter ◽  
Nutritive Value ◽  
Growth Stages ◽  
Temperature Changes ◽  
Stages Of Growth ◽  
Three Stages ◽  
Urea Addition ◽  
New Crop

Whole crop wheat (WCW) is a relatively new crop as a feed for dairy cows, and little information is available on its dry matter yield and nutritive value relative to stage of growth at harvest. Also, the role of urea (which hydrolyses to ammonia in the crop) addition in reducing fermentation and aerobic spoilage losses has not been investigated.The aim of this experiment was to examine three stages of growth at harvest for WCW, with and without urea.An area of winter wheat (cv Fortress) was cut (5 cm above ground) at three growth stages (GS 49, 71 and 87). The resultant forages were chopped through a precision-chop harvester and stored in air-tight barrels of 0.225 m3 capacity. Urea was added at 0 and 40 g/kgDM at each stage of growth and there were three replicates of each treatment. Thermocouples placed centrally were used to monitor temperature changes. The mini silos held approximately 100 kg of forages and they were opened after 90 days. Vertical cores were taken as samples and the mini silos were left open for a further 18 days to assess aerobic deterioration.

Nutritive value of Lucerne: IV. The Leaf-Stem Ratio.

1935 ◽  
Vol 25 (4) ◽  
pp. 578-597 ◽  
Author(s):  
H. E. Woodman ◽  
R. E. Evans
Keyword(s):  
Protein Content ◽  
Nutritive Value ◽  
Fibre Content ◽  
Stages Of Growth ◽  
Feeding Value ◽  
Early Flower

In this paper are brought together a number of data concerning the ratio of the amount of leaf to stem in the lucerne crop, at different stages of growth, and the separate composition of the leafy and stemmy fractions.It is shown that the proportion of leaf falls off as the crop advances in maturity, and that the rate of decrease of leafiness is greater before budding than during the period from the beginning of budding to early flower. The changes in the leaf-stem ratio largely account for the fall in protein content, the rise in fibre content and the running-off in digestibility and feeding value that take place as the crop passes through the successive stages of growth up to flowering.

The nutritional value of some tropical grasses

1965 ◽  
Vol 65 (3) ◽  
pp. 411-417 ◽  
Author(s):  
C. M. Grieve ◽  
D. F. Osbourn
Keyword(s):  
Crude Protein ◽  
Dry Matter ◽  
Nutritional Value ◽  
Nutritive Value ◽  
High Yield ◽  
Growth Stages ◽  
Tropical Grasses ◽  
Stages Of Growth ◽  
Pasture Grasses ◽  
Gross Energy

1. Twenty feeding and digestibility trials were carried out on seven tropical grasses to determine their nutritional value at different stages of growth, and to study their suitability as possible pasture grasses.2. Content of crude protein was relatively high at immature growth stages of the forages, and declined rapidly with the onset of flowering.3. Digestibility of dry matter and gross energy increased in most of the forages tested to the 5-week stage of regrowth but declined rapidly in mature stages of forages tested at 6 or 8 weeks of regrowth. Digestibility of crude protein declined with increasing maturity of the forages.4. The Nutritive Value Index of each forage was highest at four or five weeks of regrowth. The optimum time to graze the forages tested would occur between 4 and 5 weeks of regrowth, at the stage when flowering commences. This would combine high yield of forage with high nutritional value.

scholarly journals Nutritive value of Tanzania grass for dairy cows under rotational grazing

2014 ◽  
Vol 43 (8) ◽  
pp. 410-418 ◽  
Author(s):  
Alberto Magno Fernandes ◽  
Fermino Deresz ◽  
Douglas Sampaio Henrique ◽  
Fernando César Ferraz Lopes ◽  
Leonardo Siqueira Glória
Keyword(s):  
Dairy Cows ◽  
Nutritive Value ◽  
Rotational Grazing

Evaluation of the nutritive value of grass hays for growing sheep

1991 ◽  
Vol 71 (4) ◽  
pp. 1135-1147 ◽  
Author(s):  
J. R. Seoane ◽  
Ch. Beaulieu ◽  
J. Florez ◽  
G. Dupuis
Keyword(s):  
Key Words ◽  
Energy Intake ◽  
Predictive Value ◽  
Crude Protein ◽  
Dry Matter ◽  
Nutritive Value ◽  
Fiber Content ◽  
Independent Variables ◽  
Stages Of Growth ◽  
Acid Detergent Lignin

Data collected during 2 years on four grasses (three cultivars of timothy and one cultivar of bromegrass) harvested at four stages of growth were analyzed to identify variables that affect the nutritive value of grass hays for sheep. From 11 June, the day of the first harvest, to July 25, the percentage of crude protein (CP) decreased 0.17 unit/d (r2 = 0.86, P < 0.001) and the percentage of acid detergent lignin (ADL) increased 0.06 units/d (r2 = 0.74, P < 0.001). Over this period, dry matter (DM) intake decreased at a rate of 0.41 g kg−0.75 d−1 (r2 = 0.54, P < 0.001) and was negatively correlated with fiber content (P < 0.001). Delay of harvest caused a decrease in percent digestibility of 0.39 unit/d for DM (r2 = 0.86, P < 0.001), 0.38 unit/d for energy (r2 = 0.85, P < 0.001), 0.54 unit/d for CP (r2 = 0.77, P < 0.001) and 0.63 unit/d for NDF (r2 = 0.93, P < 0.001). Total digestible nutrients (TDN) decreased 0.35 unit/d (r2 = 0.86, P < 0.001). Date of harvest and %ADL were used to estimate energy value of hays. Digestible energy intake and TDN intake values decreased by 122.4 kJ kg−0.75 (r2 = 0.87, P < 0.001) and 6.6 g kg−0.75 (r2 = 0.89, P < 0.001), respectively, for each 1% increase in ADL of the hays. Equations were developed to estimate digestible DM intake and TDN intake, using NDF and ADF as independent variables. The predictive value of the equations was good when applied to data obtained from previous experiments (r2 = 0.87–0.91, n = 11, P < 0.001). Key words: Nutritive value, forages, sheep

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