scholarly journals Introduction and Economical Value of Some Species of the Malvaceae Family in the Republic of Moldova

2018 ◽  
Vol 1 (1) ◽  
pp. 126-133
Author(s):  
Victor Ţîţei ◽  
Alexandru Teleuță
Keyword(s):  
Organic Matter ◽  
Medicago Sativa ◽  
Nutritive Value ◽  
Ethanol Yield ◽  
Botanical Garden ◽  
Metabolizable Energy ◽  
The Family ◽  
Biomethane Production ◽  
Digestible Protein ◽  
Theoretical Ethanol Yield

Abstract The family Malvaceae includes about 243 genera and at least 4 225 species of herbs, shrubs and trees. They are widely varied and include several important crops, which are mainly used as sources of fibre, food and beverages, medicines, timber. The species of the family Malvaceae: annual, Malva crispa and Malva meluca, native to East Asia, and perennial, Sida hermaphrodita, from North America, grown in monoculture in the experimental land of the Botanical Garden (Institute), served as subjects of the research, and the traditional crop Medicago sativa was used as control. The importance of the studied species of the family Malvaceae consists in their very rapid emergence and fast growth. The analysis of the chemical composition suggested that the dry matter of the studied species, at the 1st mowing contained 15.67-21.67 % raw protein, 2.15-4.46 % raw fats, 8.35-11.53 % minerals and 34.74-40.66 % nitrogen free extract, Medicago sativa - 17.03 %, 2.30 %, 33.31 %, 8.01 % and 39.41 % respectively, making them good candidates for use as livestock feed and for biomethane production. The nutritive value of 100 kg fresh mass of the studied Malvaceae species was 14.9-16.6 nutritive units and 153-173 MJ metabolizable energy, a nutritive unit contained 154.2-191.0 g digestible protein with high concentrations of limiting amino acids, the control - 21 nutritive units, 228 MJ and 164.3 g digestible protein, respectively. The calculated capacity of biomethane production of the studied Malvaceae species can reach 231-267 l/kg organic matter, Medicago sativa - 248 l/kg organic matter. The theoretical ethanol yield from structural carbohydrates of the dry biomass of stalks averaged 437-527 L/t in Malvaceae species, as compared to 485 L/t in corn. The best results were achieved by Sida hermaphrodita, due to its high amount of structural carbohydrates. These species may serve as feed for livestock, but also as multi-purpose feedstock for biorefinery in Moldova.

The estimation of the nutritive value of feeds as energy sources for ruminants and the derivation of feeding systems

1978 ◽  
Vol 90 (1) ◽  
pp. 47-68 ◽  
Author(s):  
K. L. Blaxter ◽  
A. W. Boyne
Keyword(s):  
Organic Matter ◽  
Nutritive Value ◽  
Metabolizable Energy ◽  
Crude Fibre ◽  
Mitscherlich Equation ◽  
Energy Retention ◽  
Gross Energy ◽  
Biological Concepts ◽  
Two Parameters ◽  
Feeding Systems

SUMMARYThe results of 80 calorimetric experiments with sheep and cattle, mostly conducted in Scotland, were analysed using a generalization of the Mitscherlich equation R = B(l–exp(–pG))–l, where R is daily energy retention and G daily gross energy intake, both scaled by dividing by the fasting metabolism. The relations between gross energy and metabolizable energy were also examined. Methods of fitting the Mitscherlich equation and the errors associated with it are presented.It is shown that the gross energy of the organic matter of feed can be estimated from proximate principles with an error of ±2·3% (coefficient of variation) and that provided different classes of feed are distinguished, the metabolizable energy of organic matter can be estimated from gross energy and crude fibre content with an error of ±6·9%. Parameters of the primary equation made with cattle agreed with those made with sheep and there was no evidence of non-proportionality of responses on substitution of feeds in mixtures.The efficiency of utilization of gross energy for maintenance and for body gain of energy was related to the metabolizability of gross energy and, in addition, to fibre or to protein content. Prediction equations are presented which describe these relationships.It is shown that the primary equation can be manipulated to express a number of biological concepts and that its two parameters B and p can be simply derived from estimates of the two efficiency terms for maintenance and production.The results are discussed in relation to the design of feeding systems for ruminant animals and to the derivation of optima in their feeding.

The nutritive value for ruminants of a complete processed diet based on barley straw

1970 ◽  
Vol 74 (2) ◽  
pp. 311-314 ◽  
Author(s):  
F. W. Wainman ◽  
K. L. Blaxter ◽  
J. D. Pullar
Keyword(s):  
Organic Matter ◽  
Research Council ◽  
Nutritive Value ◽  
Agricultural Research ◽  
Nitrogen Retention ◽  
Metabolizable Energy ◽  
Barley Straw ◽  
Energy Value ◽  
Agricultural Research Council

SUMMARYCalorimetric experiments were made with a complete extruded diet for ruminants, ‘Ruminant Diet A’ prepared by Messrs U.K. Compound Feeds Ltd. Twelve determinations of energy and nitrogen retention were made using sheep and it was found that the diet had a metabolizable energy value of 2–32 kcal/g organic matter, and the net availabilities of its metabolizable energy were 42–7 % for fattening and 68–0 % for maintenance. These values agreed well with those predicted from equations published by the Agricultural Research Council. On a dry basis the starch equivalent was 38–3 %.

scholarly journals Rejuvenation affects nutritive value of long-established tame forages

2002 ◽  
Vol 82 (4) ◽  
pp. 621-626 ◽  
Author(s):  
H. A. Lardner ◽  
S. B. M. Wright ◽  
R. D. H. Cohen ◽  
P. Curry ◽  
L. MacFarlane
Keyword(s):  
Organic Matter ◽  
Nutritive Value ◽  
Energy Content ◽  
Practical Method ◽  
Black Soil ◽  
Metabolizable Energy ◽  
Burn Treatment ◽  
Animal Data ◽  
Digestible Organic Matter ◽  
Soil Site

Rejuvenation of forage stands is probably the most economic and practical method to improve production and quality of forage stands. Animal data are ultimately needed to validate the viability of the rejuvenation technique. This study determined animal responses to changes in forage nutrient composition following three methods of rejuvenation. Smooth bromegrass (Bromus inermis L.) and alfalfa (Medicago sativa L.) hay was harvested from rejuvenated plots on Black Chernozemic and Gray Luvisolic soils in Saskatchewan and fed to 24 ram lambs. The hay was harvested at two stages of maturity from plots that underwent the following rejuvenation techniques, selected to provide a range of responses: deep-banded liquid plus broadcast granular fertilizer (providing 200 kg N ha-1, 90 kg P2O5 ha-1, 46 kg K2O ha-1, 24 kg S ha-1), spring burn, and control. As maturity advanced, digestible organic matter intake (DOMI) (g d-1 kg-0.75) decreased (P < 0.05) for all diets harvested from burn and fertilizer plots. DMI (g d-1) and DOMI were always greater (P < 0.05) for hay (both early or late harvest) from the rejuvenated plots than from control plots. Grass-legume hay harvested early from spring burn treatment from the Gray Luvi solic soil site had a greater (P < 0.05) voluntary intake, (85.4 g d-1 kg-0.75) as compared with forage from control plots (76.2 g d-1 kg-0.75). Apparent digestibilities of DM and organic matter were greater (P < 0.01) for early harvested forage from control plots at the Gray Luvisolic soil site than early harvested hay from the fertilized plots. Metabolizable energy content was higher (P < 0.05) for early harvested hay from burn and fertilized plots at the Black soil site than hay from control plots. These results suggest that existing forage species, if harvested early, can be responsive to rejuvenation, resulting in improved animal performance. Key words: Rejuvenation, fertilizer, burn, lamb, grass-legume hay

Palatability,in situandin vitronutritive value of dried sainfoin (Onobrychis viciifolia)

2010 ◽  
Vol 148 (6) ◽  
pp. 723-733 ◽  
Author(s):  
H. KHALILVANDI-BEHROOZYAR ◽  
M. DEHGHAN-BANADAKY ◽  
K. REZAYAZDI
Keyword(s):  
Organic Matter ◽  
Dry Matter ◽  
Nutritive Value ◽  
Nutrient Content ◽  
Gas Production ◽  
Metabolizable Energy ◽  
Acid Detergent Fibre

SUMMARYThe current study was conducted to determine chemical composition, nutrient content and availability, metabolizable energy (ME) content and nutritive value of sainfoin hay for ruminants. Three ruminally cannulated Holstein cows were used forin situandin vivoexperiments, to determine rumen degradability and digestibility of sainfoin hay. Apparent total tract digestibility of nutrients was determined with feeding of sainfoin hay as the sole diet to achieve 10% more than maintenance energy requirements. Six Zandi ewes were used in the palatability experiment. Means for dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF) and condensed tannins (CTs) of sainfoin hay were: 940·4 g/kg and 93·43, 12·13, 47·87, 43·33 and 2·13 g/kg DM, respectively.In situeffective degradability of CP and DM were 0·38 and 0·54 g/g with a ruminal outflow rate of 0·05/h, respectively. OM apparent digestibility was in the range of 0·592–0·689, respectively, for Tilley & Terry and total faecal collection assays. ME content of sainfoin hay, according to different methods (gas production,in vitroandin vivodetermined digestible organic matter in dry matter (DOMD)) was in the range 6·87–10·11 MJ/kg DM. Metabolizable protein (MP) content was 483·4 g/kg CP. Sainfoin was more palatable than alfalfa for sheep. It was concluded that sainfoin has a potential use in ruminant rations, especially if environmental conditions are not suitable for alfalfa production.

scholarly journals THE EFFECT OF STAGE OF MATURITY ON THE NUTRITIVE VALUE OF KOCHIA

1989 ◽  
Vol 69 (4) ◽  
pp. 1111-1114 ◽  
Author(s):  
J. E. KNIPFEL ◽  
J. A. KERNAN ◽  
E. C. COXWORTH ◽  
R. D. H. COHEN
Keyword(s):  
Organic Matter ◽  
Protein Intake ◽  
Crude Protein ◽  
Nutritive Value ◽  
Saline Soil ◽  
Kochia Scoparia ◽  
Full Bloom ◽  
Digestible Organic Matter ◽  
Digestible Crude Protein ◽  
Digestible Protein

A trial was conducted to determine the nutritive value for sheep of kochia (Kochia scoparia L. Schrad) grown on saline soil and harvested at the early seed stage and the full bloom stage of maturity. There was a significant decrease in digestible organic matter intake (DOMI) and digestible crude protein intake (DCPI) with increasing kochia maturity (31.6 vs. 23.2 g DOMI kg−0.75 (SE = 0.6; P < 0.05) and 4.22 vs. 1.41 g DCPI kg−0.75 (SE < 0.001; P < 0.05)). Early cut kochia appears to be at least equivalent in digestible energy to alfalfa, but lower in digestible protein. Key words: Kochia, maturity, nutritive value, sheep

The nutritive value for sheep of ruminant Diet AA6, a complete cobbed diet containing 30% barley straw

1975 ◽  
Vol 84 (1) ◽  
pp. 109-111 ◽  
Author(s):  
F. W. Wainman ◽  
J. S. Smith ◽  
P. J. S. Dewey
Keyword(s):  
Organic Matter ◽  
Nutritive Value ◽  
Nitrogen Retention ◽  
Metabolizable Energy ◽  
Barley Straw ◽  
Energy Value

SUMMARYSeven determinations of energy and nitrogen retention using four adult wether sheep were made when they were fed a complete cobbed diet. The diet contained 30% of barley straw and had a metabolizable energy value of 10·9 kJ/g organic matter and the net availabilities of its metabolizable energy were 52·8% for fattening and 72·8% for maintenance. The starch equivalent on a dry basis was 53.

scholarly journals Effects of different nitrogen sources on yield, chemical composition and nutritive value of Dal grass (Hymenachne amplexicaulis)

1970 ◽  
Vol 25 (2) ◽  
pp. 75-81
Author(s):  
MJ Khan ◽  
MA Hannan ◽  
S Islam ◽  
MN Islam
Keyword(s):  
Organic Matter ◽  
Chemical Composition ◽  
Dry Matter ◽  
Nutritive Value ◽  
Poultry Manure ◽  
Nitrogen Sources ◽  
Metabolizable Energy ◽  
Control Group ◽  
Significant Difference ◽  
Rabbit Manure

The effects of different sources of nitrogen on yield, chemical composition and nutritive value of Dal grass (Hymenachne amplexicaulis) were measured. Control (T0) had no fertilizer; T1 was treated with urea - 240 kg N/ha; T2 with cow manure-25.8 tonnes (t)/ha; T3 with goat manure-13.2 t/ha; T4 with rabbit manure-7.6 t/ha and T5 with poultry manure-5.9 t/ha. All treatments provided the same amount of nitrogen. Experiment was conducted following completely randomized design (CRD) with four replications in each treatment. In the first cutting maximum green forage (33.3 & 31.1), dry matter (7.7 & 7.1) and organic matter (7.1 & 6.5) MT/ha were obtained (p<0.01) for the treatments of urea and poultry droppings. In second cutting, poultry manure showed higher value (p<0.01) than other treatments for green forage (27.8), dry matter (DM; 5.3), organic matter (OM; 4.9) and crude protein (CP; 0.6). In first cutting, urea showed higher DM (23.0) and EE (2.1) than other nitrogen sources. On the other hand, rabbit manure showed higher nitrogen free extract (NFE) (46.8) than other treatments. For crude fibre (CF) and ash, no significant difference was observed between treatments. In second cutting, poultry manure showed higher DM (19.1) and EE (3.7). In both cuttings, urea gave higher CP (11.2 and 12.1) than other nitrogen sources. CF was not significantly different (p>0.05) for second cutting. Control group showed higher (9.9) and NFE (48.2) than other treatments. There was no significant (p>0.05) difference in organic matter digestibility and metabolizable energy content of Dal grass between treatments. It is suggested that poultry manure may be recommended as a source of nitrogen fertilizer for Dal grass production in Bangladesh. DOI: 10.3329/bvet.v25i2.4621 Bangl. vet. 2008. Vol. 25, No. 2, 75-81

scholarly journals Biological Characteristics and Fodder Value of Some Species of Plants of the Genus Polygonum L. Under the Conditions of the Republic of Moldova

2013 ◽  
Vol 70 (1) ◽  
pp. 258-264
Author(s):  
Alexandru TELEUŢĂ ◽  
Victor Å¢áŽÅ¢EI1 ◽  
Sergiu COȘMAN
Keyword(s):  
Nutritive Value ◽  
Energy Content ◽  
Botanical Garden ◽  
Metabolizable Energy ◽  
Forage Crops ◽  
Fodder Plants ◽  
The Republic ◽  
Giant Knotweed ◽  
Polygonum Sachalinense ◽  
Academy Of Sciences

Giant knotweed Polygonum sachalinense, weyrich's knotweed Polygonum weyrichii and spread wide knotweed P. divaricatum species from the collection of nontraditional fodder plants, Botanical Garden (Institute) of Academy of Sciences of Moldova, as objects of study have been served. The annual productivity of P. sachalinense was 12.42 kg/m2 of fresh mass or 3.09 kg/m2 of absolutely dry matter, P. weyrichii - 7.70 kg/m2 or  2.15 kg/m2 and P. divaricatum - 5.35 kg/m2 and 1.45 kg/m2 respectively. The species P. sachalinense is characterized by a protein (16.48%) and fat content (2.53%) at the level of fodder legumes. The content of these substances is lower in the species P. weyrichii and P. divaricatum compared with P. sachalinense but higher than in traditional forage crops: corn, sudan grass and sunflower. The nutritive value of natural fodder of species of the genus Polygonum is characterized by 0.20 to 0.23 nutritive units with a metabolizable energy content for cattle of 2.43 - 2.87 MJ / kg. The species P. sachalinense has a higher nutritional value of the natural fodder and is used in the production of quality silage.

scholarly journals Assessing the nutritive value of waterweeds to livestock production via in vitro

2020 ◽  
Vol 42 (1) ◽  
pp. 207-216
Author(s):  
D. A. Ekunseitan ◽  
A. O. Yusuf ◽  
O. E. Odesanmi ◽  
M. A. Ogun ◽  
T. O. Bawala ◽  
...  
Keyword(s):  
Organic Matter ◽  
Fatty Acid ◽  
Nutritive Value ◽  
Short Chain Fatty Acid ◽  
Gas Production ◽  
Chain Fatty Acid ◽  
Metabolizable Energy ◽  
Short Chain ◽  
Organic Matter Digestibility

The predominant increase in the price of feedstuffs and the consistent shift in climate have increased the cost of producing animal protein and an attendant increase in the search of available and valuable plant options in combating this problem. The study aimed to evaluate the nutritive value of ten identified water weeds (Polygonum lanigerum, Nymphaea lotus, Paspalum scrobiculatum, Ascroceras zizanioides, Ipomea aquatica, Panicum sulbabidum, Sacciolepis africana, Leersia hexandra, Heteranthera callifolia and Dicksonia antartica) via in vitro digestibility studies. The gas production was measured by incubating samples in buffered ruminal fluid from goats for 96hr. Cumulative gas production was recorded at 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 60, 66, 72, 84 and 96 hour of incubation periods and the organic matter digestibility (OMD), short chain fatty acid (SCFA) and metabolizable energy (ME) were also estimated. Results indicated that the total gas production varied significantly (P<0.05) at 24 and 48 hours incubation. Gas production ranged between 4.67 ml and 14.00 ml with least and highest obtained in Sacciolepis Africana and Ipomea aquatic, respectively. The Metabolizable energy (MJ/KgDM) recorded in all weeds differed (P<0.05) in all hours of incubation. Paspalum scrobiculatum and Dicksonia antartica recorded the least value at 24 and 48 hours incubation while Nymphaea lotus and Dicksonia antartica had the least value at 72 and 96 hours incubation. Heteranthera callifolia had the highest organic matter digestibility (%) while the least short chain fatty acid (μmol) was observed in Dicksonia antartica at 24, 48 and 96 hours incubation. Based on the results of this study, these plants had the potentials of being fed to livestock especially during the dry season when forage feeds are generally scarce.

Energy values of whole lucerne (Medicago sativa) and of its stem and leaf fractions in immature and fully grown sheep

1985 ◽  
Vol 25 (4) ◽  
pp. 783 ◽  
Author(s):  
DE Margan ◽  
NM Graham ◽  
TW Searle
Keyword(s):  
Cell Wall ◽  
Organic Matter ◽  
Medicago Sativa ◽  
Crude Protein ◽  
Dry Matter ◽  
Energy Content ◽  
Metabolizable Energy ◽  
Published Data ◽  
Digestible Energy ◽  
Ad Libitum

Chopped lucerne hay (Medicago sativa) and a stem fraction derived from it were fed to two adult and two immature wethers ad libitum and at a level near maintenance. Energy, nitrogen, and carbon balances were measured during feeding and fasting. The hay contained 17% crude protein and 46% cell wall constituents (dry matter basis) and the stem, which was 53% of the total, contained 10% crude protein and 64% cell wall. Voluntary dry matter consumption rates of the hay (per kg 3/4) were 103 and 145 g/day by the adults and immatures, respectively; the corresponding values for the stem were 73 and 100 g/day. Maximum daily energy balances were 290-3 16 kJ/kg3/4 for the hay and approximately maintenance for the stem. With both ad libitum and restricted feeding, energy digestibility was higher for the hay (56- 63%) than for the stem fraction (45-51%). The metabolizable fraction of digestible energy was 78% at the low and 82% at the high level of feeding and tended to be greater with the stem than with the hay. At the lower feed intake, metabolizable energy was about 10 and 8 MJ/kg organic matter for whole lucerne and stem respectively. Net availability of metabolizable energy was 64 and 49% for maintenance and gain on the hay, compared with 53 and 34% on the stem. As estimated by difference, the energy values of leaf were: digestible energy, 76%; metabolizable energy, 77% of digestible energy or 12.4 MJ/kg organic matter; net availability of metabolizable energy, 78% for maintenance and 60% for gain. All these figures are for the adult sheep; the immature animals gave values that were lower to various degrees. Consideration of the present results together with published data for other samples of lucerne suggests that the use of equations based on study of grasses to predict the energy values of lucerne is likely to introduce significant bias. Equations for this limited set of data on lucerne are given, gross energy being related to crude protein content, metabolizable energy to crude fibre and net availability of metabolizable energy to metabolizable energy content.

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