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Derivation And Testing Of Nutrient Norms For White Clover, Marta J. Rodreiguez
Derivation And Testing Of Nutrient Norms For White Clover, Marta J. Rodreiguez
IGC Proceedings (1977-2023)
Foliar analysis has been practiced widely to diagnose the nutrient status of crops in order to give fertilizer recommendations. The changing nature of plant tissue mineral concentrations imposes limitations on the use of foliar analysis for diagnostic purposes. In this way, sampling of particular plant parts at particular stages of development is required to assess the nutrient status of crop and forage plants. The Diagnosis and Recommendations Integrated System (DRIS) was developed by Beaufils (1973), based on a holistic experimental approach, as a means of coping with the problems derived of the dynamic nature of foliar composition. Three concepts are …
Liming And Phosphate Fertilization On Forage Production, Mineral Composition And Nodulation On Pigeonpea (Cajanus Cajan (L.) Millsp.), V T. Paulino, N L. Costa, C.G S. Pedreira
Liming And Phosphate Fertilization On Forage Production, Mineral Composition And Nodulation On Pigeonpea (Cajanus Cajan (L.) Millsp.), V T. Paulino, N L. Costa, C.G S. Pedreira
IGC Proceedings (1977-2023)
For legume forage plant contribute effectively to grassland improvement, mainly through high herbage yields and fixation of atmospheric N, it is necessary to have a better knowledge of its nutritional requirements, since pigeonpea does not grow well on acidic soils with high levels of Al and poor in Ca, Mg and P. Ogunwale and Olaniyi (1978) reported a significant increase on forage production and P and Ca uptake for pigeonpea as a result of phosphate fertilization, while Abrufi.a et al., (1984) observed that lime improved growth, nodulation and P and Ca uptake, but with little effect on crude protein content. …
Effects Of Phosphogypsum, Phsophorus And Lime On Andropogon Gayanus Kunth, V T. Paulino, E Malavolta
Effects Of Phosphogypsum, Phsophorus And Lime On Andropogon Gayanus Kunth, V T. Paulino, E Malavolta
IGC Proceedings (1977-2023)
There are several factors which determine the low animal productivity in the tropics. Among these factors, inadequate nutrition is the most limiting one followed by the low natural fertility and high acidity of the soils in these regions. Previous findings have shown important soil nutrient deficiencies in some Brazilian cerrado soils. Malavolta (1952) demonstrated sulfur (S) deficiencies, while Werner et al. (1967) found plant response to S. Responses to phosphorus addition are very common in this kind of soil and in tropical America there are rates of phosphorus being applied, which sometimes are uneconomical for the formation and maintenance of …
An Effective P Application Method For Dactylis Glomerata, M Hojito, A Nishimune, M Noshiro
An Effective P Application Method For Dactylis Glomerata, M Hojito, A Nishimune, M Noshiro
IGC Proceedings (1977-2023)
There are two practical ways to apply phosphorus (P) fertilizer on cutting type grasslands in Hokkaido, Japan. The first one is to apply P at a rate of about I 00 kg P2Os/ha in the spring (April) in one application. Some reasons for this method have been explained (Hayakawa et al., 1951). However, in some cases, it is more convenient for practical management to apply three equal amounts of P, at three different times during the year (April, June and August) the same as other fertilizers such as nitrogen or potassium. That is a second way. Grassland soil is acidified …
Distribution Of Phosphorus And Aluminum In Acidic Pasture Soils And Effects On Growth Of Subterranean Clover, M J. Mclaughlin, T R. James
Distribution Of Phosphorus And Aluminum In Acidic Pasture Soils And Effects On Growth Of Subterranean Clover, M J. Mclaughlin, T R. James
IGC Proceedings (1977-2023)
In south-eastern Australia, pasture improvement and the use of superphosphate fertilizers have resulted in the gradual acidification of many soils under subterranean clover pastures (Williams, 1980). Despite high values of exchangeable and extractable aluminium (and low pH) recorded in many soils, there are few reports of significant responses of clover growth to lime application in the field. In this study we examined the vertical distribution of CaCb-extractable aluminium (Al) and available phosphorus (Bray P) in pasture topsoils. We also simulated the conditions in the field sites by investigating in solution culture the response of subterranean clover to various concentrations of …
Study Of Some Factors That Influence Upon P Fertilization On Pastures From Red Ferralitic Soil, Marta Hernandez, A R. Mesa
Study Of Some Factors That Influence Upon P Fertilization On Pastures From Red Ferralitic Soil, Marta Hernandez, A R. Mesa
IGC Proceedings (1977-2023)
The importance of P for vegetal nutrition has been a topic of study for several workers. However, results obtained have not always been positive using P fertilizer due to some factors such as the content of this nutrient in the soil and its fixation capacity. This study was conducted in order to evaluate the response of guinea grass cv. Likoni and buffel grass cv. Biloela to P fertilization. These pastures were selected due to their favourable behaviour and the different levels of exigency to P that they present.
Response Of Forage Oats To Nitrogen Fertilizer In High And Low Fertility Soils, N Moreira
Response Of Forage Oats To Nitrogen Fertilizer In High And Low Fertility Soils, N Moreira
IGC Proceedings (1977-2023)
Forage oats are used extensively as whole-crop in rainfed areas of Portugal as is traditional in Mediterranean areas. They are cropped with minimum inputs, and increasingly in mixtures with annual legumes such as Vivia sativa (Moreira, 1989). In addition to the fact that relatively low yields are obtained in these conditions, the oats harvested during grain filling have a very low crude protein content, which severely limits their nutritive value (Eagles et al., 1979; Abreu et al., 1982). The aim of the present study is to determine the effects of nitrogen fertilizer on whole-crop forage oats in terms of drymatter …
Rendement Des Prairies Dans Les Marais De L'Ouest De La France. Diagnostic Des Insuffisances Minerales, Y Pons, E Lafon
Rendement Des Prairies Dans Les Marais De L'Ouest De La France. Diagnostic Des Insuffisances Minerales, Y Pons, E Lafon
IGC Proceedings (1977-2023)
Situes sur la cote atlantique entre la Vilaine au Nord et la Gironde au Sud, !es Marais de l'Ouest s'etendent sur 250 000 ha environ. Ils resultent du comblement d'un golfe marin par des alluvions fluviomarines argileuses. La prairie est la production obligatoire lorsque !es contraintes hydrauliques ne sont pas maitrisables ou lorsque le cout d'amenagement est prohibitif. C'est le cas d'une part des marais "mouilles" qui sont soumis aux crues des rivieres (sols tourbeux et argileux) et d'autre part des marais desseches lorsque !es sols sont sodiques et done tres instables. L'objectif de l'etude est d'expliquer !es ecarts de …
Effects Of Short-Term Rotations Of Monocultures And Mixtures Of Legumes And Grasses With Rice In The Subtropical Zone Of South-Western China, S R. Zhou, Y G. Yu, K Mao, X M. Gan, Z L. Pu
Effects Of Short-Term Rotations Of Monocultures And Mixtures Of Legumes And Grasses With Rice In The Subtropical Zone Of South-Western China, S R. Zhou, Y G. Yu, K Mao, X M. Gan, Z L. Pu
IGC Proceedings (1977-2023)
Five short-term rotation systems of monocultures and mixtures of legumes and grasses with rice, i.e., Medicago hispida ➔ rice, Trifolium repens cv. Ladino ➔ rice, Astragalus sinicus + lolium multiflorum ➔ rice, Medicago hispida + Lolium multiflorum ➔ rice and Trifolium repens cv. Ladino + Lolium multiflorium ➔ rice, were selected from 8 evaluated in this study in the subtropical zone of south-western China. The average results for these rotational types per year were: forage dry matter 3,63 tlha, forage crude protein 727 .5 kg/ha, metabolisable energy 22.lx!03 MJ/ha, in vitro organic matter digestibility of forages 72.84%, rice yield 7.4 …
Potential Of Crotalaria Ochroleuca (Marejea) In Traditional Crop And Livestock Production Systems In Tanzania, S V. Sarwatt
Potential Of Crotalaria Ochroleuca (Marejea) In Traditional Crop And Livestock Production Systems In Tanzania, S V. Sarwatt
IGC Proceedings (1977-2023)
In experiments to study the role of Crolalaria ochrroleuca (marejea) in traditional farming systems, the plant was used in the following way: (l) broadcast alone at a rate of 10 kg/ha of seed to determine dry matter (DM) yield, nutritive value and kg N/ha it can fix at different stages of growth, i.e., 2, 4, 6, 8, IO, 12, 14 and 16 weeks. (2) sown under after 3 weeks on alternate ridges with maize and maize alone as control. (3) the leaves at 10 weeks were harvested and supplemented to young sheep grazing 8 h/day. 12 male sheep …
Sesbania Sesban: A Promising Forage Legume In Semi-Arid Central Tanzania, D N. Msariri, M L. Kusekwa
Sesbania Sesban: A Promising Forage Legume In Semi-Arid Central Tanzania, D N. Msariri, M L. Kusekwa
IGC Proceedings (1977-2023)
Seventy-four accessions of Sesbania sesban were evaluated alongside 7 of S. goetzel for forage production at Mpwapwa, In Tanzania. The former was promising while the latter was generally unsuccessful. For S. sesban, germination of scarified inoculated seed in nursery was 34%. Survival of the seedlings was 96% at transplanting at 8 weeks. Growth in the field, measured in terms of mean incremental height, was 2.9 m at l year of establishment. On average, 50% of the plants flowered and formed pods at 158 and 190 days, respectively. Seed yield averaged 348 g per plant, while forage yield averaged 4.5 t …
Analysis Of Growth Characteristics And Evaluation As Fodder Resources Of Tropical Leguminous Browses In Subtropical Area In Japan, Y Kawamoto, M Honma
Analysis Of Growth Characteristics And Evaluation As Fodder Resources Of Tropical Leguminous Browses In Subtropical Area In Japan, Y Kawamoto, M Honma
IGC Proceedings (1977-2023)
To evaluate the potential of several tropical leguminous browse species as fodder plants in the subtropical area of Japan, the dry matter yield and quality and resistance to clipping and drought in the first year were examined and compared in browse species. Species such as Deamodiwn tortuoaum, Desmodium discolor, Aeschynomene villosa and herbaceous Stylosanthes guianensis, had relatively high water stress tolerance, All the species were resistant to clipping. The species such as Desmodium tortuosum. Desmodium discolor among Desmodium genus have high potential for dry matter production and nutritive value in this region.
Agronomic Evaluation Of Centrosema Germplasm On Acid Utisol In The Humid Tropics Of Peru. Ii. Centrosema Tetragonolobum Schultze-Kraft & Williams, Gerhard Keller-Grein
Agronomic Evaluation Of Centrosema Germplasm On Acid Utisol In The Humid Tropics Of Peru. Ii. Centrosema Tetragonolobum Schultze-Kraft & Williams, Gerhard Keller-Grein
IGC Proceedings (1977-2023)
The agronomic potential of 11 accessions of Centrosema tetragonolobum was assessed In a small-plot clipping trial conducted near Pucallpa, Peru. These accessions were compared with 8 selected accessions of C. acutifolium, C, brasilianum and C. macrocarpum, and 3 accessions of the agronomically little-known C. brachypodum and C. capitatum. All C. tetragonolobum accessions were well adapted to an acid ultisol (pH 4.S, 80% Al saturation). Several of them produced dry matter and seed yields similar to those of promising lines of C. acutifolium and C. macrocarpum, The capacity to root at trailing stems was poor for C. tetragonolobum …
Advances In Research And Development With Sylosanthes And Other Tropical Pasture Legumes, D F. Cameron, C P. Miller, L A. Edye, J W. Miles
Advances In Research And Development With Sylosanthes And Other Tropical Pasture Legumes, D F. Cameron, C P. Miller, L A. Edye, J W. Miles
IGC Proceedings (1977-2023)
The last 20 years have seen major advances in research and development wilh tropical legumes. Research advances have been closely associated with substantial increases in the number and diversity of genetic resource collections, Release of a wide range of new cultivars has been based on selection for plant adaptation, persistence and productivity, screening for resistance to pest's and diseases, and the development of efficient seed production. Determination of fertiliser requirements and grazing management practices has resulted in sustainable animal production from legume-based pasture systems. Extensive pasture development has now occurred in both high and low input systems. Options vary from …
Growth And Mineral Nutrition In Dichanthium Aristatum Sward Shaded By Tress, P Cruz, N M. Munier-Jolain, R Tournebize, H Sinoquet
Growth And Mineral Nutrition In Dichanthium Aristatum Sward Shaded By Tress, P Cruz, N M. Munier-Jolain, R Tournebize, H Sinoquet
IGC Proceedings (1977-2023)
Gliricidia sepium is an important legume tree used in the silvopastoral systems of the Caribbean area and tropical America. In this work we analysed the effect of its alley cropping on the growth and mineral nutrition of a Dichanthium aristatum sward, Results show that nitrogen uptake and conversion efficiency of solar radiation were twice as high in the shaded grass. Phosphorus and potassium uptake of dichanthium were also improved by tree presence, Better mineral nutrition and growth of a shaded sward could be related to the better water status of the .. grass leaves throughout the day, This effect may …
Contribution Of Parkia Biglobosa To The Feeding Value Of Pasture Systems In West Africa, Elly N. Sabiiti, J Cobbina, J Lambourne
Contribution Of Parkia Biglobosa To The Feeding Value Of Pasture Systems In West Africa, Elly N. Sabiiti, J Cobbina, J Lambourne
IGC Proceedings (1977-2023)
Parkia (Parkia biglobosa) is an important traditional economic tree legume with several uses for the rural farmers in West Africa, although it has received only limited resenrch. Parkia is dominant in natural pastures or fallow fields that are used for livestock grazing. The tree provides shade to forage grasses and livestock, protects soil from heat and torrential tropical rains, resists fire damage and coppices very well after defoliation. Farmers grow several food crops under the canopy. The fruits, leaves and young seedlings, which are highly nutritious, form an important fodder for livestock in the dry season when natural …
Utilization Of Faba Bean (Vicia Faba L.) Fodder And Silage In Ruminants, P C. Gupta, M A. Akbar
Utilization Of Faba Bean (Vicia Faba L.) Fodder And Silage In Ruminants, P C. Gupta, M A. Akbar
IGC Proceedings (1977-2023)
Two feeding experiments were conducted to find out the nutritive value of faba bean (Vicia faba L.) green fodder and silage, In the first experiment, mixtures of faba bean and oat (Avena sativa) green fodders in proportions of 1:1, 1:2 and 2:1, respectively, were fed to lambs randomly divided in to 3 groups of 6 each for 50 days, The DM intake of lambs, change in their body weights and digestibility co-efficients of various nutrients did not differ (P>0.05) among the 3 groups. However, the values of DCP in different rations varied significantly (P<0.05) but not that of TDN. In the second experiment, pure faba bean was ensiled for 50 days and offered to sheep, which maintained their body weights. It was concluded that effective utilisation of green faba bean in sheep could be achieved either by ensiling or by mixing it with other forages like oat. Feeding of faba bean and oat mixture al 2:1 ratio gave optimum growth in lambs,
Harvesting And Processing Techniques Of Tropical Grass And Legume Seeds For Smallfarmers, Lumyai Kowithayakorn, Chaisang Phaikaew
Harvesting And Processing Techniques Of Tropical Grass And Legume Seeds For Smallfarmers, Lumyai Kowithayakorn, Chaisang Phaikaew
IGC Proceedings (1977-2023)
For smallfarmers of forage legumes and grasses in Thailand, manual harvesting and cleaning of leguminous seeds have been widely practised because of cheap and available labour. Tropical grasses produce more seeds than can be harvested; hence it is necessary to find means to improve harvesting and processing techniques in order to obtain high standards of both quality and quantity of seed. The main obstacles could be due to prolonged flowering nnd grain filling periods of individual seedheads resulting in the uneven ripening of seeds at harvest. Premature seeds cause low yields and low quality nt harvests in many species. Flowering …
Yield, Composition And In Vitro Digestibility Of Russell Lupin, S M. Kitessa, G D. Hill, A M. Nicol
Yield, Composition And In Vitro Digestibility Of Russell Lupin, S M. Kitessa, G D. Hill, A M. Nicol
IGC Proceedings (1977-2023)
Six harvests were made (at 3-weekly intervals) from spring regrowth of Russell lupin (Lupinus polyphyllus x Lupinus arboreus ) to evaluate changes in yield and nutritive value with plant maturity. Dry matter (DM) yield and neutral detergent fibre (NDF) concentration increased from 40 to 160 g/plant and 24 to 46%, respectively, while nitrogen concentration, in vitro cellulase DM and organic matter digestibility decreased from 4.5-2.4%, 77-56% and 81-55%, respectively, as the lupins matured from late vegetative to hard pod stage. Peak digestible DM (DDM) yields of Russell lupins, at about 90 g/plant, occurred at full bloom and dry pod, …
Ruzi Grass (Brachiaria Ruziziensis) Seed Production In North-East Thailand, Chaisang Phaikaew, Chanchai Manidool, Pimpaporn Devahuti
Ruzi Grass (Brachiaria Ruziziensis) Seed Production In North-East Thailand, Chaisang Phaikaew, Chanchai Manidool, Pimpaporn Devahuti
IGC Proceedings (1977-2023)
The recent expansion of beef and dairy production in Thailand has increased demand for pasture seed. Ruzi grass (Brachiaria ruziziensis) seed production has increased from 18 tin 1983 to 466 tin 1991. The; production sites are in the north east, where soils and climate are most suitable for seed production. 60% of all ruzi seed is being produced by smallfarmers; the rest is produced by government stations. Average farmer yield of rilzi is 400 kg • seed/h'a, with each farmer contracted 'to grow 0.32 h�� of ruzi grass, at a guaranteed price of US$2/kg; Abo·ut 2700 farmers are …
Winter Cold Temperate Rangelands: Improvement Strategies For Intensive Rangeland Ecosystems, B E. Allan, D Scott
Winter Cold Temperate Rangelands: Improvement Strategies For Intensive Rangeland Ecosystems, B E. Allan, D Scott
IGC Proceedings (1977-2023)
Transfer of developed grassland technologies to rangelands is discussed in terms of environmental gradients and the options and constraints they impose. Winier feed limitation can be overcome through conserved feeds and various in situ systems involving special purpose pastures and feed banks. General animal nutrition can be improved through intensive development, low input systems, better control of range utilisation and, where appropriate, correction of mineral deficiencies. The emphasis in seeking quick and easy solutions to rangeland management problems is questioned, A more informed, environmentally sound and sustainable approach to rangeland fanning atlitudes and management is proposed. A stepwise process to …
Achieving Potential Herbage Seed Yields In Species Of Temperate Regions, Franco Lorenzetti
Achieving Potential Herbage Seed Yields In Species Of Temperate Regions, Franco Lorenzetti
IGC Proceedings (1977-2023)
The potential seed yield (PSY) of a crop is represented by the total number of ovules present at anthesis in a unit area and is very high for nil forage species. However, seed yield or the agricultural realised seed potential (ARSP) is very low especially if compared with major grain crops (e.g., 15% vs 40% of PSY, respectively). The need for obtaining primarily high yield of high quality forage indicates that seed yield should be increased by improving the efficiency of the reproductive system rather than increasing its size. Seed setting and development and seed shattering are the characters to …
Productivity And Nutritive Value Of Coastal And Valley Bottom Plant Communities In The Falkland Islands, J A. Kerr, J H. Mcadam
Productivity And Nutritive Value Of Coastal And Valley Bottom Plant Communities In The Falkland Islands, J A. Kerr, J H. Mcadam
IGC Proceedings (1977-2023)
In the Falkland Islands, short dense grassland communities ("greens") in valley-bottoms, and in coastal areas often associated with dense populations of seabirds, are selectively grazed by livestock and wild geese within the extensive grazing systems. Annual and seasonal herbage productivity, botanical composition, digestibility and utilisation, of greens were experimentally assessed at 6 sites on Bast Falkland. Herbage productivity, digestibility and utilisation were higher than reported for the dominant Cortaderia communities and compared favourably with Improved pastures. Botanical composition of green types were similar. Despite their uneven distribution and low area, greens are an important forage resource and could be used …
Effect Of Nitrogen Fertilizer On Dairy Farm Productivity And Viability In The Subtropics, G K. Reason, J Chaseling
Effect Of Nitrogen Fertilizer On Dairy Farm Productivity And Viability In The Subtropics, G K. Reason, J Chaseling
IGC Proceedings (1977-2023)
Nitrogen fertiliser as urea was applied to dryland grass pastures in south east Queensland to improve the quantity and quality of feed on offer to grazing dairy cows. Milk production per cow and reproductive performance data suggest that the groups of cows that benefited most were the winter calvers, which calved at significantly higher live weights and were therefore better able to overcome short periods of nutritional stress due to feed shortages in winter. Whole farm input• output data suggests that a reasonable whole farm production model relating milk produced from paddock feed and nitrogen fertiliser use is feasible. The …
Intake Of South African Mutton Merino Ewes On Wheat Stubble Grazing, T S. Brand, J M. Van Heerden, F Franck
Intake Of South African Mutton Merino Ewes On Wheat Stubble Grazing, T S. Brand, J M. Van Heerden, F Franck
IGC Proceedings (1977-2023)
Wheat stubble was grazed continuously for 154 days during the summer (December-April) by reproducing and dry ewes (n-8) at 2 stocking rates ( 1 or 2 ewes/ha), Samples were collected for chemical analysis from oesophageally fistulated (OF) sheep. Intake was determined using controlled chromium-release devices. The mean CP, ADF and NDF contents and iii vitro OM digestibility of samples were respectively 16.1:t0.4%; 40.7:t0.8%, 59.0:tl.1% and 48.5±0.7% t 1 ewe/ha and 10.8±1.1%; 53.9±1.1%, 72.1±0.9% and 48.8:t0.7% at 2 ewes/ha. The mean CP intake of dry ewes was 202±7 g/day (I ewe/ha) and 113:t6 g/day (2 ewes/ha), while the CP intake of …
Monthly Changes In Plant Biomass, Net Primary Productivity And Transfer Dynamics Of A Tropical Grazing Land Ecosystem In Southern India, K.S T.K Karuniachamy, K Paliwal
Monthly Changes In Plant Biomass, Net Primary Productivity And Transfer Dynamics Of A Tropical Grazing Land Ecosystem In Southern India, K.S T.K Karuniachamy, K Paliwal
IGC Proceedings (1977-2023)
Monthly changes in plant biomass, net primary productivity and transfer dynamics of tropical grazing land of western Ghats region, southern India, are presented. The annual above- ground net production was 9.03 g/m2/day and the below-ground net production was 2.56 g/m2/day. Total annual net primary production was estimated at 4232 g/m2/day. Of the total input of 11.59 g/m2/day into the system, about 77.9% was channelled to above-ground and 22.1% to belowground, The rate of litter disappearance was 0.55 g/m2/day and l.14 g/ m2/day for below-ground disappearance. The total output was 1.69 g/ m2/day which was 14.6% of the total input. Thus, …
Effect Of A Legume (Arachis Pintoi) On The Regrowth And Mineral Nutrition Of Associated Pangola Grass (Digitaria Decumbens), P Cruz, H Sinoquet, O Sobesky
Effect Of A Legume (Arachis Pintoi) On The Regrowth And Mineral Nutrition Of Associated Pangola Grass (Digitaria Decumbens), P Cruz, H Sinoquet, O Sobesky
IGC Proceedings (1977-2023)
The effect of a companion legume (Arachis pintoi) on the growth and nitrogen nutrition of an associated grass (Di'gitaria decumbems) was studied during 2 regrowth periods. Digitaria growth was expressed as a function of the cumulative absorded PAR (photosynthetically active radiation) i.e., by using the radiation-use efficiency concept. For this purpose, PAR intercepted by both the pure and mixed swards was estimated by using a radiative transfer model. Nitrogen nutrition status of Digitaria was characterised by the relation between N uptake and dry matter production. Results show a close agreement between N nutrition level and radiation-use efficiency of the grass. …
Reserve Mobilization During Regrowth After Cutting Of Forage Species: Quantification And Physiological Mechanisms In Ryegrass And Lucerne, A Ourry, J Bigot, T Kim, J Boucaud, J Salette
Reserve Mobilization During Regrowth After Cutting Of Forage Species: Quantification And Physiological Mechanisms In Ryegrass And Lucerne, A Ourry, J Bigot, T Kim, J Boucaud, J Salette
IGC Proceedings (1977-2023)
Time course of remobilisation of reserves was studied during the regrowth of Loli11m perem1e and Medicago sativa by 15N labelling, carbohydrate analyses and by measuring time course of several enzymes activities. When photosynthesis decreased during early regrowth, and consequently reduced availability of carbon skeletons within the plant, both nitrogen (N) uptake (lolium perene) and N2 fixatlon (Medicago saliva) decreased. Nilrogenase, as well as nitrate reductase activities, decreased. Reduction of external N assimilation was compensated for by intensive mobilization of endogenous N in roots of lucerne and in stubble of ryegrass. In the same manner, some of …
Quantification Of Nutrients Consumed And Utilized By Holstein Cows Grazing Grass Pastures In The North-Eastern Usa, Lisa A. Holden, L D. Muller, G A. Varga, S L. Fales
Quantification Of Nutrients Consumed And Utilized By Holstein Cows Grazing Grass Pastures In The North-Eastern Usa, Lisa A. Holden, L D. Muller, G A. Varga, S L. Fales
IGC Proceedings (1977-2023)
Managing the nutrition of high producing dairy cows on pasture in the north-eastern USA is challenging owing to difficulty in accurately estimating intake and In determining nutrient utilisation by grazing dairy cows. In Trial 1, 16 lactating Holstein cows were used to estimate intake with an intensively grazed orchardgrass (Dactylis glomerata L.) pasture with 2 stocking rates of 2.S and 3,9 cows/ha in a 24 week grazing season. Cows were fed a grain supplement which comprised about 35% of the diet dry matter. Chromium oxide was used as an external marker in faeces, Results of Trial 1 indicated total …
Crop Processing And Fractionation As A Commercial Proposition To Forage-Based Animal Systems, H T. Ostrowski-Meissner
Crop Processing And Fractionation As A Commercial Proposition To Forage-Based Animal Systems, H T. Ostrowski-Meissner
IGC Proceedings (1977-2023)
The paper outlines crop processing and fractionation technology as it applies to an intensive forage-based operation with beef cattle, The benefits of forage processing prior to its feeding to cattle are described with an emphasis not only on the uniformity of the nutritive quality of the processed product but also on the extra financial benefits resulting from the wet fractionation process. The value-added primary products from the fractionation process ensure extra return to the. forage producers, crop processing installation and the feedlot operation. The characteristics of the fractionation products derived from lucerne and other crops are described.