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Estimating Pasture Intake By Dairy Cows, Dennis R. Cosgrove, D. P. Cooper Jun 2023

Estimating Pasture Intake By Dairy Cows, Dennis R. Cosgrove, D. P. Cooper

IGC Proceedings (1977-2023)

Proper nutrient management planning minimizes the environmental impact of manure from dairy farms. Manure output from dairy cows can be predicted from feed intake (Wilkerson et al., 1997). Weighing feed and refusals each day can determine accurately the feed intake of dairy cows in confinement. Intake determination is more difficult for dairy cows on pasture (Vasquez & Smith, 2000). As part of a larger study aimed at estimating manure production of dairy cows on pasture, this study compares 3 methods for estimating pasture yield and feed intake.

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An Evaluation Of The N-Alkane Technique For Determining Diet Composition In Animals Grazing Complex Swards, M. D. Fraser, J. M. Moorby, V. J. Theobald, R. Jones Jun 2023

An Evaluation Of The N-Alkane Technique For Determining Diet Composition In Animals Grazing Complex Swards, M. D. Fraser, J. M. Moorby, V. J. Theobald, R. Jones

IGC Proceedings (1977-2023)

The n-alkane profiles of epicuticular waxes derived from different plant species are sufficiently distinct to allow assessment of the proportions of different herbages in two-component mixtures including perennial ryegrass/white clover, heather/hill grass and rush/perennial ryegrass (Dove & Mayes, 1996). Evidence suggests the reliability of such estimates declines as the number of different dietary components increases. However, recent studies have shown analysis of additional compounds, including long-chain fatty alcohols, may improve discrimination between different dietary components. The aim of this experiment was to quantify the accuracy of such methods for determining the diet composition of animals grazing complex swards.

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Estimating Pasture Intake By Cattle Using Alkanes And A Known Amount Of Supplement, E. Charmley, J. L. Duynisveld, H. Dove Jun 2023

Estimating Pasture Intake By Cattle Using Alkanes And A Known Amount Of Supplement, E. Charmley, J. L. Duynisveld, H. Dove

IGC Proceedings (1977-2023)

The alkane ratio method for estimating pasture intake involves calculating the fecal ratio of plant (endogenous) and exogenous alkanes. This method is effective for sheep, although the delivery mechanism for the exogenous alkanes has presented challenges in cattle (Charmley et al. 2003). Dove et al. (2003) have shown that the relative concentration of components in a mixed diet can be estimated from fecal alkane concentrations using least squares methods. Further, if the amount of one dietary component is known, then the amount of all components, and hence intake, can be determined. In this trial beeswax was added to …

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Using The N-Alkane Technique To Estimate The Herbage Intake And Diet Composition Of Cattle Grazing A Miscanthus Sinensis Grassland, Y. J. Zhang, Y. Togamura, K. Otsuki Jun 2023

Using The N-Alkane Technique To Estimate The Herbage Intake And Diet Composition Of Cattle Grazing A Miscanthus Sinensis Grassland, Y. J. Zhang, Y. Togamura, K. Otsuki

IGC Proceedings (1977-2023)

Plant wax alkanes are now widely used as marker substances (Dove & Mayes 1991) for the estimation of forage intake and diet composition of grazing herbivores. The objective of this study was to evaluate this method with cattle grazing a M. sinensis grassland in Japan.

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Rich Information In The Acoustic Signals From Feeding And Grazing In Ruminants, Montague W. Demment, J. R. Galli, Carlos A. Cangiano, Emilio A. Laca Jun 2023

Rich Information In The Acoustic Signals From Feeding And Grazing In Ruminants, Montague W. Demment, J. R. Galli, Carlos A. Cangiano, Emilio A. Laca

IGC Proceedings (1977-2023)

Because of their impact on productivity and the environment, feeding behaviour, ingestion and rumination are critical to understand intake in grazing ruminants. Many systems, mainly mechanical, have been developed to measure ingestive behaviour. However, these systems have problems, including mechanical failure and the inability to distinguish between the complex jaw movements of prehension and ingestion (Laca et al., 1994). The sounds generated by these behaviours are rich in information that holds potential not only to distinguish and count behaviours, but also identify aspects of the nature of the foods ingested.

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The Sound Of Chewing, J. R. Galli, Carlos A. Cangiano, Emilio A. Laca, M. W. Demment Jun 2023

The Sound Of Chewing, J. R. Galli, Carlos A. Cangiano, Emilio A. Laca, M. W. Demment

IGC Proceedings (1977-2023)

Acoustic biotelemetry has been proposed as a way to count ingestive bites and chews of grazing animals. Recent work has indicated the possibility that detailed analysis of 'sounds of chewing' contains information about other characteristics of the ingestive process that can be used to study grazing behaviour of free ranging animals (Laca & Wallis DeVries, 2000), or to monitor stall-fed animals in more detail.

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Development Of A 2-Dimensional Video-Acoustic Tool For Monitoring Bite Placement, Wendy Griffiths, V. Alchanatis, R. Nitzan, V. Ostrovsky, E. Ben-Moshe, R. Yonatan, S. Brenner, H. Baram, E. D. Ungar Jun 2023

Development Of A 2-Dimensional Video-Acoustic Tool For Monitoring Bite Placement, Wendy Griffiths, V. Alchanatis, R. Nitzan, V. Ostrovsky, E. Ben-Moshe, R. Yonatan, S. Brenner, H. Baram, E. D. Ungar

IGC Proceedings (1977-2023)

Studies of grazing behaviour conducted at the spatial scale of a feeding station demonstrate that intake rate declines with increasing depletion, a response attributed to an increase in bite overlap (Ginnett et al., 1999; Ungar et al., 2001). In order to understand the rules that govern bite placement, a methodology is required that can map the sequential placement of bites on the sward surface. We developed a video-acoustic tool to achieve this and report the findings of using the tool on small uniform patches of herbage.

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Spatial Heterogeneity Of Seasonal Grazing Pressure Created By Herd Movement Patterns On Hilly Rangelands Using Gps And Gis, A. I. Arnon, E. D. Ungar, T. Svoray, A. Perevolotsky, M. Shachak, H. Baram, R. Yonatan, E. Ben-Moshe, S. Brenner, D. Barkai Jun 2023

Spatial Heterogeneity Of Seasonal Grazing Pressure Created By Herd Movement Patterns On Hilly Rangelands Using Gps And Gis, A. I. Arnon, E. D. Ungar, T. Svoray, A. Perevolotsky, M. Shachak, H. Baram, R. Yonatan, E. Ben-Moshe, S. Brenner, D. Barkai

IGC Proceedings (1977-2023)

The spatial heterogeneity of grazing pressure on extensive rangelands has management implications (Adler et al., 2001) but it has traditionally been difficult to quantify. Combination of technologies based on GPS (Global Positioning System) and GIS (Geographic Information Systems) is a quantum leap in our ability to address this issue. These tools were used to estimate the spatial heterogeneity of grazing pressure at a farm scale, and examine the relation between local landscape features and local grazing pressure.

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Chew-Bites, Jaw Movement Allocation And Bite Rate In Grazing Cattle As Identified By Acoustic Monitoring, E. D. Ungar, N. Ravid, T. Zada, E. Ben-Moshe, R. Yonatan, S. Brenner, H. Baram, A. Genizi Jun 2023

Chew-Bites, Jaw Movement Allocation And Bite Rate In Grazing Cattle As Identified By Acoustic Monitoring, E. D. Ungar, N. Ravid, T. Zada, E. Ben-Moshe, R. Yonatan, S. Brenner, H. Baram, A. Genizi

IGC Proceedings (1977-2023)

Bite rate derives from the time budget of the biting and chewing processes of intake, which are both performed by jaw movements. A new type of jaw movement was revealed by acoustic monitoring in cattle - the "chew-bite" -which chews herbage already in the mouth and harvests fresh herbage with the same jaw movement (Laca et al., 1992). Chew-biting should enable the animal to reduce the total number of jaw movements performed per bite without reducing the number of chews per bite. We examined the variation among individuals in the allocation of jaw movements between the three types, and …

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P3 And Nia-Pro Of Turnip Mosaic Virus Are Independent Elicitors Of Superinfection Exclusion, Haritha Nunna, Feng Qu, Satyanarayana Tatineni Jun 2023

P3 And Nia-Pro Of Turnip Mosaic Virus Are Independent Elicitors Of Superinfection Exclusion, Haritha Nunna, Feng Qu, Satyanarayana Tatineni

Department of Plant Pathology: Faculty Publications

Superinfection exclusion (SIE) is an antagonistic interaction between identical or closely related viruses in host cells. Previous studies by us and others led to the hypothesis that SIE was elicited by one or more proteins encoded in the genomes of primary viruses. Here, we tested this hypothesis using Turnip mosaic virus (TuMV), a member of the genus Potyvirus of the family Potyviridae, with significant economic consequences. To this end, individual TuMV-encoded proteins were transiently expressed in the cells of Nicotiana benthamiana leaves, followed by challenging them with a modified TuMV expressing the green fluorescent protein (TuMV-GFP). Three days after …

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P3 And Nia-Pro Of Turnip Mosaic Virus Are Independent Elicitors Of Superinfection Exclusion, Haritha Nunna, Feng Qu, Satyanarayana Tatineni Jun 2023

P3 And Nia-Pro Of Turnip Mosaic Virus Are Independent Elicitors Of Superinfection Exclusion, Haritha Nunna, Feng Qu, Satyanarayana Tatineni

Department of Plant Pathology: Faculty Publications

Superinfection exclusion (SIE) is an antagonistic interaction between identical or closely related viruses in host cells. Previous studies by us and others led to the hypothesis that SIE was elicited by one or more proteins encoded in the genomes of primary viruses. Here, we tested this hypothesis using Turnip mosaic virus (TuMV), a member of the genus Potyvirus of the family Potyviridae, with significant economic consequences. To this end, individual TuMV-encoded proteins were transiently expressed in the cells of Nicotiana benthamiana leaves, followed by challenging them with a modified TuMV expressing the green fluorescent protein (TuMV-GFP). Three days after …

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Assessment Of Human Health Risk Of Zinc And Lead By Consuming Food Crops Supplied With Excessive Fertilizers, Kafeel Ahmad, Asma Ashfaq, Zafar Iqbal Khan, Shahzad Akhtar, Sana Rani, Farzana Siddique, Shamayem Aslam, Ghulam Mustafa, Rana Muhammad Zubair, Hafsa Memona, Aima Iram Batool, Muhammad Nadeem, Javed Shoukat, Shahzadi Mahpara, Mumtaz Akhtar, Muhammad Umer Farooq Awan, Ilker Ugulu, Hamid Raza, Muhammad Ameer Hamza Jun 2023

Assessment Of Human Health Risk Of Zinc And Lead By Consuming Food Crops Supplied With Excessive Fertilizers, Kafeel Ahmad, Asma Ashfaq, Zafar Iqbal Khan, Shahzad Akhtar, Sana Rani, Farzana Siddique, Shamayem Aslam, Ghulam Mustafa, Rana Muhammad Zubair, Hafsa Memona, Aima Iram Batool, Muhammad Nadeem, Javed Shoukat, Shahzadi Mahpara, Mumtaz Akhtar, Muhammad Umer Farooq Awan, Ilker Ugulu, Hamid Raza, Muhammad Ameer Hamza

Journal of Bioresource Management

For the study of heavy metals impact on human beings, areas in Sargodha city that were supplied with various types of fertilizers were chosen. The three industrial areas; (Bhalwal, Sillanwali, and Sahiwal) of this city were explored for research reasons. The researchers wanted to know how much heavy metal was in the soil, food crops, and human. Excess fertilizer use contributes to global pollution. Farmyard manure, urea, and potassium chloride were used on Site 1; urea phosphate, manure, and ammonium sulphate were used on Site 2; and super phosphate, ammonium phosphate, and nitrate phosphate were used on Site 3. Samples …

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Chlorophyll A Predictions In A Piedmont Lake In Upstate South Carolina Using Machine-Learning Approaches, Ibrahim O. Busari, Debabrata Sahoo, Raghavendra Jana, Charles Privette Jun 2023

Chlorophyll A Predictions In A Piedmont Lake In Upstate South Carolina Using Machine-Learning Approaches, Ibrahim O. Busari, Debabrata Sahoo, Raghavendra Jana, Charles Privette

Journal of South Carolina Water Resources

Freshwater systems are often breeding grounds for harmful algal blooms (HABs), although they are more dominant in ponds and lakes due to the prevailing conditions in those bodies of water. Therefore, the monitoring, modeling, and management of HABs requires knowledge of the complex interrelationship between factors that influence HABs and their detrimental effect on the ecosystem. High concentrations of chlorophyll a are often used to measure algal blooms in bodies of water. Generally, water samples are collected from the field and the concentration of chlorophyll a is measured in a laboratory and compared to water quality standards in order to …

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Animal Communication And Sentience, Catia Correia-Caeiro, Katja Liebal Jun 2023

Animal Communication And Sentience, Catia Correia-Caeiro, Katja Liebal

Animal Sentience

Segundo-Ortin & Calvo (S&C) argue for sentience in plants on the basis of several studies of what they describe as "cognitive abilities" in plants. As other commentaries (e.g., Brooks Pribac, 2023; Damasio & Damasio, 2023; ten Cate, 2023) have pointed out, however, there is some misuse of several concepts, and a lack of evidence for sentience. We try to clarify three questions in S&C’s discussion: (1) How is communication defined and conceptualised in animal research? (2) Is plant communication comparable to animal communication? (3) Is communication (or the process we see in plants) a good basis for inferring sentience in …

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The Effect Of Harvesting Strategy Of Grass Silage On Milk Production, K. Kuoppala, M. Rinne, J. Nousiainen, P. Huhtanen Jun 2023

The Effect Of Harvesting Strategy Of Grass Silage On Milk Production, K. Kuoppala, M. Rinne, J. Nousiainen, P. Huhtanen

IGC Proceedings (1977-2023)

Timing of harvest in primary growth of grass is a major factor affecting D-value (digestible organic matter, g/kg DM) of silage and dry matter (DM) consumption and milk production of dairy cows (Rinne, 2000). The objective of this research was to investigate whether there is a similar pattern in regrowths of grass.

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The Effect Of Harvesting Strategy Of Grass Silage On Milk Production, K. Kuoppala, M. Rinne, J. Nousiainen, P. Huhtanen Jun 2023

The Effect Of Harvesting Strategy Of Grass Silage On Milk Production, K. Kuoppala, M. Rinne, J. Nousiainen, P. Huhtanen

IGC Proceedings (1977-2023)

Timing of harvest in primary growth of grass is a major factor affecting D-value (digestible organic matter, g/kg DM) of silage and dry matter (DM) consumption and milk production of dairy cows (Rinne, 2000). The objective of this research was to investigate whether there is a similar pattern in regrowths of grass.

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The Effects Of Offering Hay, Pit-Stored Grass Silage Or Big-Bale Silage To Pregnant Ewes On Ewe And Lamb Performance, T. F. Crosby, P. J. Quinn, J. J. Callan, T. Mcgrane Jun 2023

The Effects Of Offering Hay, Pit-Stored Grass Silage Or Big-Bale Silage To Pregnant Ewes On Ewe And Lamb Performance, T. F. Crosby, P. J. Quinn, J. J. Callan, T. Mcgrane

IGC Proceedings (1977-2023)

Hay and pit silage have been used extensively for feeding sheep over the winter period, but in recent years, especially on smaller farms, big-bale silage has become increasingly popular. However, there is limited comparative information on the use of big-bale silage for sheep, especially in relation to the effects of chopping and growth stage at harvest. This study compared the performance of ewes offered hay, pit silage, or big-bale grass silage made from either chopped or unchopped grass and cut from the same field at the same time.

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Moisture Control, Inoculant And Particle Size In Tropical Grass Silages, S. F. Paziani, L. G. Nussio, D. R. S. Loures, L. J. Mari, José Leonardo Ribeiro, P. Schmidt, M. Zopollatto, M. C. Junqueira, A. F. Pedroso Jun 2023

Moisture Control, Inoculant And Particle Size In Tropical Grass Silages, S. F. Paziani, L. G. Nussio, D. R. S. Loures, L. J. Mari, José Leonardo Ribeiro, P. Schmidt, M. Zopollatto, M. C. Junqueira, A. F. Pedroso

IGC Proceedings (1977-2023)

Decreased fermentation and spoilage losses with improved aerobic stability during feed out can be accomplished by several strategies, such as wilting, addition of microbial additives and moisture absorbents. Particle size reduction may increase bulk density and improve the fermentation. The objective of this trial was to evaluate the effects of particle size, moisture content and a microbial additive on chemical-physical parameters and losses in silages made from Tanzania grass.

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Effect Of A New Microbial Strain As An Inoculant On The Quality Of Maize Silage, J. G. Kim, J. S. Ham, E. S. Chung, S. Seo, J. K. Lee Jun 2023

Effect Of A New Microbial Strain As An Inoculant On The Quality Of Maize Silage, J. G. Kim, J. S. Ham, E. S. Chung, S. Seo, J. K. Lee

IGC Proceedings (1977-2023)

Lactic acid bacteria play a key role in making silage from forage, and lactic acid bacteria selected from good silage could be expected to be suitable inocula for making good silage. Thus, the purpose of this study was to examine the such novel lactic acid bacteria for making high quality maize silage.

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A New System For The Evaluation Of The Fermentation Quality Of Silages, E. Kaiser, K. Weiß Jun 2023

A New System For The Evaluation Of The Fermentation Quality Of Silages, E. Kaiser, K. Weiß

IGC Proceedings (1977-2023)

Depending on the content of nitrate in green forage, the pattern of fermentation products in silages differ significantly (Weiß & Kaiser, 2001). The systems, which are now common in practice for evaluating the quality of silage fermentation, characterise fermentation quality incorrectly because the evaluation is influenced by the chemical composition of green forage. The aim of this work was to derive an evaluation system for fermentation quality, which is independent from the chemical composition of green forage.

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Nutrient Composition Of Napier Grass (Pennisetum Purpureum) And Napier Grass Silages Made With Different Additives, A. A. Aganga, U. J. Omphile, J. C. Baitshotlhi Jun 2023

Nutrient Composition Of Napier Grass (Pennisetum Purpureum) And Napier Grass Silages Made With Different Additives, A. A. Aganga, U. J. Omphile, J. C. Baitshotlhi

IGC Proceedings (1977-2023)

Forage contributes about 73% and 95% of the diets of ruminants fattened on grain supplements and on natural ranges respectively (Sarwar & Nisa, 1998). Napier grass is one of the highest yielding tropical forage grasses and was shown to provide a good quality silage when it was supplemented with molasses, as the fermentation quality was not affected by the high storage temperature (40oC). The objectives of this study were to determine the chemical composition of silages when ensiled alone or mixed with additives.

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A Modified Forage System For Stocker Production In The Southern Great Plains, Usa, B. K. Northup, H. S. Mayeux, W. A. Phillips Jun 2023

A Modified Forage System For Stocker Production In The Southern Great Plains, Usa, B. K. Northup, H. S. Mayeux, W. A. Phillips

IGC Proceedings (1977-2023)

Putting low-cost gain on yearling cattle with forages is an important agricultural activity in the Southern Great Plains. The primary forage system within the area incorporates two forages: winter wheat (Triticum aestivum) for grazing in fall through spring, and warm- season grasses in the summer (Fig. 1). These systems have significant gaps in time when high-quality forage is not available. This study tested the function of introduced cool-season perennial grasses in filling the spring gap, and their capacity as large-scale replacements for winter wheat.

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An Evaluation Of Grazing Value Of Maize And Companion Crops For Wintering Lactating Ewes, E. A. Van Zyl, C. S. Dannhauser Jun 2023

An Evaluation Of Grazing Value Of Maize And Companion Crops For Wintering Lactating Ewes, E. A. Van Zyl, C. S. Dannhauser

IGC Proceedings (1977-2023)

Northwestern KwaZulu-Natal (KZN), in South Africa, is well known for its sheep production from natural rangeland in summer (October to May). During winter, however, the nutritional value of the rangeland cannot maintain young growing sheep or pregnant and lactating ewes. With this in mind, Lyle (1991) suggested the use of planted pastures for the winter. Crichton et al (1998) and Esterhuizen & Niemand (1989) suggested the use of maize crop residues for both cattle and sheep during winter, whereas Moore (1997) evaluated grazing (not harvested) maize for this purpose. He found that the crude protein content of the crop was …

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An Agronomic Evaluation Of Grazing Maize Combined With Companion Crops For Sheep In Northwestern Kwazulu-Natal, South Africa, C. S. Dannhauser, E. A. Van Zyl Jun 2023

An Agronomic Evaluation Of Grazing Maize Combined With Companion Crops For Sheep In Northwestern Kwazulu-Natal, South Africa, C. S. Dannhauser, E. A. Van Zyl

IGC Proceedings (1977-2023)

Northwestern KwaZulu-Natal (KZN), in South Africa, is well known for its sheep production from natural rangeland in summer (October to May). During winter however, the nutritional value of the rangeland cannot maintain young growing sheep or pregnant and lactating ewes. With this in mind Lyle (1991) suggested the use of planted pastures for the winter. Crichton, Gertenbach & Henning (1998) and Esterhuizen & Niemand (1989) suggested maize crop residues for both cattle and sheep during winter, whereas Moore (1997) evaluated grazing maize (not harvested) for this purpose. He found that the protein content of the crop was inadequate and for …

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The Use Of Forage Supplements To Overcome Seasonal Shortages Of Grazed Herbage In Dairy Production Systems, A. Hameleers, D. J. Roberts Jun 2023

The Use Of Forage Supplements To Overcome Seasonal Shortages Of Grazed Herbage In Dairy Production Systems, A. Hameleers, D. J. Roberts

IGC Proceedings (1977-2023)

In most dairy production systems, grazed herbage is potentially the cheapest forage resource. However, while the availability is affected by seasonal changes in herbage growth, and/or between year variations in climatic conditions, the requirements of dairy production systems tend to remain constant throughout the season. This paper summarises five experiments that examined the effect of the characteristics of the forage supplement (dry matter, DM; metabolisable energy, ME, content; Type) and the effect of stage of lactation and access method to the supplement on animal performance.

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Year-Round Forage Systems For Beef Cows And Calves, J. P. Fontenot, W. M. Clapham, W. S. Swecker, Jr. D. Fiske, J. B. Hall, J. H. Fike, G. Scaglia Jun 2023

Year-Round Forage Systems For Beef Cows And Calves, J. P. Fontenot, W. M. Clapham, W. S. Swecker, Jr. D. Fiske, J. B. Hall, J. H. Fike, G. Scaglia

IGC Proceedings (1977-2023)

Beef cow systems in the USA are based on forages with little or no concentrates fed. Tall fescue (Festuca arundinacea Schreb. L.) is one of the important pasture forages in the lower Northeast and upper South (Allen et al., 2001). Limited research has been conducted on year-round all forage systems based on cool season forages. Stockpiling tall fescue in late summer-early fall provides good quality forage that is usually grazed rather than harvested. Forage systems including tall fescue and clover (Trifolium repens L.) produced excellent performance in beef cows and calves, with minimum inputs (Allen et al …

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Seasonality Of Forage Production Of Coastcross-1 With Different Sources And Applications Of Phosphorus, José C. Pinto, Í. P. A. Santos, A. E. Furtini Neto, A. R. Morais, E. E. Mesquita, D. J. G. Faria, I. F. Andrade Jun 2023

Seasonality Of Forage Production Of Coastcross-1 With Different Sources And Applications Of Phosphorus, José C. Pinto, Í. P. A. Santos, A. E. Furtini Neto, A. R. Morais, E. E. Mesquita, D. J. G. Faria, I. F. Andrade

IGC Proceedings (1977-2023)

Brazil presents high potential for meat production from pastures. However, the feeding of ruminants depends on the conditions and the climate. Approximately 80% of the annual production of dry matter (DM) occurs in the period October to March (spring - summer). In the autumn and winter production is low associated with high humidity and low temperatures in the south and low rainfall in the tropical north. The situation is exacerbated by inadequate management practices and low soil fertility, particularly low levels of phosphorus (P). The objective of this experiment was to evaluate the seasonality of production of DM of coastcross-1 …

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Study On Re-Growth And Nutritional Potentials Of Eleusine Indica L In Chitwan, Nepal, P. R. Regmi, Naba R. Devkota, M. Sapkota, M. P. Sharma Jun 2023

Study On Re-Growth And Nutritional Potentials Of Eleusine Indica L In Chitwan, Nepal, P. R. Regmi, Naba R. Devkota, M. Sapkota, M. P. Sharma

IGC Proceedings (1977-2023)

The efforts to use exotic fodder species to solve the problem of green roughage scarcity in Nepal, have had only limited success because the species are not persistent. Use of local forage species, such as Eleusine indica, which is widely adapted and tolerant of repeated cutting (Lowry et al., 1992), could be possible solution to the problem. The objective of this study was to understand the re-growth potential of E. indica with respect to nitrogen fertiliser application and cutting management and to determine its feeding value in the dry season.

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The Use Of Multivariate Analysis In Tropical Grass And Legume Seed Production In Cuban Regions, G. Febles, R. Baños, S. Yáñes, V. Torres, T. Ruiz, F. Funes Jun 2023

The Use Of Multivariate Analysis In Tropical Grass And Legume Seed Production In Cuban Regions, G. Febles, R. Baños, S. Yáñes, V. Torres, T. Ruiz, F. Funes

IGC Proceedings (1977-2023)

Seed production is an important activity in developing countries where pastures are the main source for animal feeding (Febles et al. 2003). Another outstanding aspect is the mathematical analysis used when a large number of species, varieties and ecotypes are used in the same study. The objective of this paper was to examine the use of multivariate analysis in studies on the effects of edaphoclimatic factors on seed production from tropical grasses and legumes.

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Dry Matter Production And Nutritive Quality Of Wild Guinea Grass (Panicum Maximum) Grown Along Roadsides In Sri Lanka, Sujatha Premaratne, G. G. C. Premalal Jun 2023

Dry Matter Production And Nutritive Quality Of Wild Guinea Grass (Panicum Maximum) Grown Along Roadsides In Sri Lanka, Sujatha Premaratne, G. G. C. Premalal

IGC Proceedings (1977-2023)

Wild Guinea grass (Panicum maximum) was introduced into Sri Lanka in the 1820s for forage purposes and has now naturalised in most ecological zones, ecosystems and habitats including roadsides with the exception of hilly and semi-arid parts of the country. The enormous distribution of the grass throughout the country has contributed much to supplying livestock feeds, soil erosion control, and improvement of soil fertility. The objective of this study was to investigate the growth, dry matter (DM) production and nutritive quality of wild Guinea grass along roadsides in different ecological zones.

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