Physical Sciences and Mathematics Commons^™

Chlorophyll Concentration (Spad Values) As An Indicator Of Crude Protein Content And As A Selection Criterion In Grass Breeding, N. Gáborèík

IGC Proceedings (1997-2023)

The main aim of the study was to analyse chlorophyll a + b content (SPAD values) determined by portable chlorophyllmeter (SPAD- 502, Minolta, Japan) and crude protein content in leaves of timothy, coocksfoot, perennial ryegrass and meadow fescue (total 24 cultivars). Differences between both parameters were confirmed and a close relationship between chlorophyll content (SPAD values) and crude protein concentration was found. Correlation coefficient between SPAD and crude protein varied from 0.541⁺⁺ for ryegrass to 0.906⁺⁺ for timothy. This fact should be used for selection of grasses with higher crude protein content and/or better use of mineral soil …

Nitrogen Fertiliser Effects On Perennial Ryegrass Nutritive And Nitrate Content During The Cool Season, Joseph L. Jacobs, Frank R. Mckenzie

IGC Proceedings (1997-2023)

A study was undertaken to determine the effects of differing levels of nitrogen (N) application (0 (N1), 25 (N2), 50 (N3) and 75 kgN/ha (N4)) during late autumn (T1), early (T2) and late winter (T3) on the nutritive characteristics and nitrate content of perennial ryegrass. Changes in crude protein (CP) for all treatments at each application time were similar irrespective of level of N application. At the commencement of all treatments, the existing CP content was highest in N3, followed by N2, N1 and N0. Nitrate content decreased throughout T1 primarily due to dry conditions, whilst during T2, levels for …

Seasonal Variation Of Brachiaria Spp. Quality In The Pantanal Of Mato Grosso Do Sul, Brazil, S. M. A. Crispim, E. L. Cardoso, F. Fernandes

IGC Proceedings (1997-2023)

This study aims to evaluate the dry matter yield and the crude protein (CP) of Brachiaria decumbens and Brachiaria humidicola and soil covering by these species, considering stand lasting age and hydrologic cycle periods in the Pantanal, from November 1996 to November 1997. Dry matter yield presented differences between hydrologic cycle periods and age, and their interactions. B. decumbens and B. humidicola over 10 years comparison yielded the largest amount of dry matter yield, observed in February. B. humidicola growth rate was slower than B. decumbens. Pastures stand ages did not cause differences in crude protein, but differences have …

Sources And Rates Of Phosphorus In Improving Degraded Pasture In Brazilian West Amazon, Valdinei T. Paulino, N. L. Costa, C. R. Townsend, J. A. Magalhães, R. G. A. Periera

IGC Proceedings (1997-2023)

The effects of phosphorus sources (triple superphosphate – TSP, single superphosphate – SSP and partially acidulated rock phosphate – PARP) and rates (0, 50 and 100 kg/ha of P₂O₅ on dry matter (DM) yields and chemical composition of a degraded Brachiaria brizantha cv. Marandu pasture were evaluated in a cutting trial. Phosphorus fertilization, irrespective of sources and rates, showed an effective agronomic technique for pasture recuperation. The grass DM yields and potassium contents were significantly improved by phosphorus application, while weed DM yields were depressed. Irrespective of sources and rates, crude protein, phosphorus, and calcium contents were …

Nitrogen Response Efficiencies From Grazed Dairy Pastures Under Dry Conditions, Frank R. Mckenzie, Joseph L. Jacobs

IGC Proceedings (1997-2023)

Experiments were conducted within a long-term nitrogen (N) fertiliser experiment under grazing. The objective was to examine N response efficiencies (kg dry matter (DM)/kg N) and herbage crude protein (CP) content to fertiliser N applied under dry soil conditions (gravimetric soil moisture content of 17% at 10cm; soil field capacity = 38% and wilting point = 11%) during autumn (April 1999) and late spring (November 1999) in southeastern Australia. Visually, N treated plots were greener in colour than control (no N) plots. No differences were recorded in primary or residual DM yields, N response efficiencies, and pasture growth rates between …

Effect Of Phosphatic Fertilizer Rates Level On Growth, Crude Protein Content And Nitrogen Fixation Ability Of Alfalfa At Sowing Year, Chang-Ho Kim, Hyo-Won Lee

IGC Proceedings (1997-2023)

The experiment was conducted to determine effects of phosphate fertilizers on growth characteristics, crude protein content and nitrogen fixation ability of alfalfa (Medicago sativa L) in the sowing year. Two rates of phosphate (200 and 400 kg/ha P) were applied to phosphorus -deficient native soil in Korea and samples were taken every 7 days from the 30th to the 93rd day. Number of branches, root length and dry matter weight at phosphate fertilizer level of 400kg in sowing year more increased than those at 200kg/ha. The number of nodules did not differ due to phosphate fertilizer rate. The crude …

Comparison Of Nitrate Contents For Reed Canarygrass And Orchardgrass In Large Amounts Of Compound Fertilization, A. Fushimi, Y. Tamura, K. Matoba

IGC Proceedings (1997-2023)

Reed canarygrass (Phalaris arundinacea L.) could be an ideal candidate for manure application. We compared its growth, crude protein (CP) and nitrate N (NO³-N) content to that of orchardgrass (Dactylis glomerata L.) on different levels of nitrogen fertilization (3,10,15 and 20g N m^-2, applied from May 15 to September 15 after each monthly cutting. The dry weight (DW) of reed canarygrass increased significantly with increasing amounts of N nitrogen on July, August and September. However, orchardgrass only showed a significant increase in yield on September. The concentration of CP of reed canarygrass was significantly …

Compatibility Of Kura Clover And Cool Season Grass Mixtures In Michigan, P. Jeranyama, R. H. Leep, T. Dietz

IGC Proceedings (1997-2023)

Kura clover (Trifolium ambiguum Bieb.) is an alternative forage legume for rotational grazing in cool-season grass mixtures. However, compatibility with cool-season grasses is unknown. Seven cool-season perennial grasses were seeded into Kura clover in a rotational grazing experiment. The objectives of this study were to evaluate botanical composition, forage yield and quality of binary mixtures of cool-season grass with Kura clover. Field studies were conducted on a Nester (fine sandy loam) soil at Lake City Experiment Station, Lake City, MI. Botanical compositions in the first year of the study heavily favored grasses (avg. 74%) and Kura clover accounted for …

Forage Quality Of Five Important Grasses At Sar‐Aliabad Summer Rangelands In Golestan Province, Iran, S. A. Hosseini, M. Mesdaghi

IGC Proceedings (1997-2023)

No abstract provided.

Investigation On Effects Of Phenological Stages And Species On Forage Quality Of Rangelands (Iran), Marzieh Mosayyebi, Hossein Arzani, Mohsen Maleki

IGC Proceedings (1997-2023)

No abstract provided.

Dynamic Analysis Of Nutrient Composition And Digestibility Of Cichorium Intybus In Hohhot, Bingzhe Fu, Fugui Mi, Risu Na, Hongmei Ning

IGC Proceedings (1997-2023)

No abstract provided.

Nutritive Value And Voluntary Intake Of Beef Cattle Females In Pampa Biome, Southern Brazil, Teresa C. M. Genro, M. G. Orqis, L. Oliveira, Alexandre C. Varella, L. R. Milano, A. K. Freitas, T. S. Palma

IGC Proceedings (1997-2023)

No abstract provided.

Variation In Forage Quality Of Three Rangeland Species In Different Phenological Stages, S. A. Javadi, H. Arzani

IGC Proceedings (1997-2023)

No abstract provided.

Implications Of Excess Nitrogen For Intake, Diet Choice And Production Of Sheep Fed Temperate Pastures, Garry C. Waghorn, G. P. Cosgrove

IGC Proceedings (1997-2023)

No abstract provided.

Bromatological Characteristics Of Sugarcane Silages Inoculated With Lactobacillus Buchneri, José C. Pinto, Carla Luiza Da Silva Ávila, H. C. P. Figueiredo, A. R. Morais, Odilon G. Pereira, R. F. Schwan

IGC Proceedings (1997-2023)

No abstract provided.

Study On Quality Of 22 Alfalfa Varieties In Hebei Lowland Plain, Yuan Li, Haiming Zhao, Nan Xie, Guibo Liu

IGC Proceedings (1997-2023)

No abstract provided.

Companion Crops For Pasture Establishment In The State Of Minas Gerais, Brazil, I. F. Andrade, P. Schmidt

IGC Proceedings (1997-2023)

No abstract provided.

Effects Of Animal Grazing On Quality Of Grass And Forb Forages In Mazandaran Province Of Iran, Ghasem Ali Dianati Tilaki

IGC Proceedings (1997-2023)

No abstract provided.

Study Of Phenological Stages Effect On Nutritive Values Of Twelve Species In Hamadan Rangelands, Iran, M. R. Sadeghimanesh, Hossein Arzani, Hossein Azarnivand, E. Shahriary

IGC Proceedings (1997-2023)

No abstract provided.

Pasture Grass And Fodder Evaluation And Selection For Dry Season Feeding In Nakuru, Kenya, N. Ondabu, R. Kenana, J. Mwangi

IGC Proceedings (1997-2023)

No abstract provided.

Genetic Evaluation Of Sweet Potato Vine Genotypes, N. Ondabu, J. K. Kitilit, K. R. G. Irungu, R. Kenana, J. Mwangi

IGC Proceedings (1997-2023)

No abstract provided.

The Results Of Breeding Perennial Grasses: The Evaluation Of Developed Dactylis Glomerata Hybrids, Sarmite Rancane, P. Berzins, B. Jansone, Vija Stesele, I. Dzene, A. Jansons

IGC Proceedings (1997-2023)

Perennial grasses are high yielding, pest resistant and less demanding in terms of soil (Peeters, 2008), they are the most important source of roughage. Each species has certain valuable features that make it unique among others and which are desirable to be highlighted for ensuring high productivity, good forage quality, plasticity, strength of various stress conditions, as well as winter hardiness, which is particularly important characteristic of northern latitudes. It is the main task of breeders, as far as possible to combine all the aforesaid properties into one breed. In order to create such a universal variety the breeders of …

Quality Of Fodder Cowpea Varieties As Influenced By Soil Moisture Stress Levels, S. Lakshmi, M. R. Anita

IGC Proceedings (1997-2023)

A serious drawback of sustainable livestock production system in Kerala is the inadequate seasonal distribution of fodder production. The quantity and quality of herbage available in the lean dry months from January to May is very low. Therefore it is imperative to develop a fodder production system that increases the availability and improves the quality of herbage in the dry summer months. Fodder cowpea (Vigna unguiculata L. Walp) is a legume inherently more tolerant to drought than other fodder legumes (Fatokun et al., 2009) and considered as a crop capable of improving sustainability of livestock production through its …

Forages Improve Livelihoods Of Smallholder Farmers With Beef Cattle In South Central Coastal Vietnam, Ba Xuan Nguyen, Peter A. Lane, David Parsons, Huu Van Nguyen, Phi Khanh Ho Le, Jeff P. Corfield, Tri Tuan Duong

IGC Proceedings (1997-2023)

In South Central Coastal Vietnam, on-farm research and farmer experience demonstrated the benefits of growing improved forages as a means of improving the year round quantity and quality of feed available for beef cattle. In Binh Dinh, Phu Yen and Ninh Thuan provinces, five new forage species (Panicum maximum, cv. TD58, Brachiaria hybrid cv. Mulato II, Pennisetum purpureum cv.VA06, Paspalum atratum cv. Terenos and Stylosanthes guianensis cv. CIAT 184) were evaluated for yield and crude protein concentration. There was not a consistent yield difference between locations for the forage grasses, but in Binh Dinh province P. maximum TD58 …

Effect Of Cutting Intervals On Yield And Nutritive Value Of Stylosanthes Seabrana, Nandini Nimbkar, Sharad Choudhari, Ketaki Kanbargi

IGC Proceedings (1997-2023)

In India natural pastures do not meet the nutritional needs of grazing ruminants, and supplementary feeding of crop residues and concentrates is necessary for profitable animal production (Phaikaew et al., 2004). Stylo has a long history of research and development in India and has been used in many production systems including as a fodder crop, in ley farming and intercropping in agroforestry and silvipasture and for wasteland development and soil conservation (Ramesh et al., 1997).

Recent developments in the commercial utilization of stylo as a fodder crop have mostly been in the peninsular Indian states of Maharashtra, Karnataka, …

Winter Forage Yield Of Signal Grass (Brachiaria Brizantha (Hochst. Ex. A. Rich) R.D. Webster) At Different Cutting Frequency And N Fertilization, Pedro Arturo Martínez Hernández, Erick A. López Rojas, Rogelio Montero Rodríguez, Enrique Cortés Díaz, Iban Mendoza Pedroza, José L. Zaragoza Ramírez

IGC Proceedings (1997-2023)

Signal grass (Brachiaria brizantha (Hochst. Ex. A. Rich) R.D. Webster) is widely grown in sub-humid tropical environments. In winter, shorter photoperiod and lower rainfall and temperatures reduce grass forage yield. Cutting frequency and N fertilization might reduce this negative effect (Whitehead, 1995; Pereira et al., 2014). The objective of the study was to determine winter forage yield total and by components of Signal grass under different cutting frequency and N fertilization.

Nitrate Accumulation And Utilization In Fodder Oats Varieties As Affected By Different Nitrogen Levels, Gurjeet Kaur, Meenakshi Goyal, Pritpal Singh

IGC Proceedings (1997-2023)

Importance of fodder crops in agriculture needs no emphasis because of the fact that regular fodder availability is basic requirement for livestock production. The area under fodder in Punjab is 2.03 million hectares with total production of 45 million tons, which is not sufficient to meet the maintenance requirements of livestock. To improve the quality of milk production it is important that animals are fed with good quality of fodder. Nitrogen is an essential primary nutrient for plant growth and plays an important role in productivity of forage crops. The application of N at various growth stages is one of …

Quality Of Grass Fodder Cowpea Mixtures As Influenced By Row Ratio, S. Lakshmi, M. R. Anita

IGC Proceedings (1997-2023)

A serious drawback of sustainable livestock production system in Kerala is the inadequate seasonal distribution of fodder production. The quantity and quality of herbage available in the lean dry months from January to May is very low. Therefore it is imperative to develop a fodder production system that increases the availability and improves the quality of herbage in the dry summer months. Intensive fodder production systems based on grasses are increasingly becoming important to the dairy farmers of Kerala. Development of compatible persistent grass legume mixtures could alleviate acute seasonal livestock feed deficiency in dry seasons (Njarui et al., 2004). …

Effects Of Tropical Legume (Stylosanthes Cv. Campo Grande) Silage And Dietary Protein Levels On Animal Performance Of Finishing Beef Cattle, Leandro Diego Da Silva, Odilon G. Pereira, Thiago C. Da Silva, Sebastião De C. Valadares Filho, Karina G. Ribeiro

IGC Proceedings (1997-2023)

Recently, the interest in legume silage for livestock systems has increased in tropical countries (Heinritz et al., 2012) because of the high inclusion of the protein sources in the concentrate used in feedlot diets, like soybean meal. Stylosanthes cv. Campo Grande was developed in Brazil and this cultivar has a good adaptation to tropical conditions, as soils with low fertility and high acidity (Fernandes et al., 2005). Recently, this legume has been indicated for silage making because of its nutritional value and previous results with beef cattle have showed similar performance and digestibility in comparison with corn silage (Souza …

Nutritive Value And Cattle Preferences In An Old Boer Lovegrass Stand Treated With Biosolids In Cananea, Sonora, México, Salomón M. Moreno, Martha R. Martin, Fernando Ibarra, Roque Martínez, Agustín Cabral Martell, Francisco B. Denogean, Rafael Retes

IGC Proceedings (1997-2023)

Boer lovegrass (Eragrostis curvula var. conferta) is an introduced species planted to increase productivity on deteriorated rangelands in northern Mexico. Forage production with Boer lovegrass achieves an increase of two to three fold when compared to native grasses, however, as stands became old, pasture productivity and forage quality declines due to a reduction in available nutrients causing a reduction in grazing capacity and beef production. Previous studies have shown that biosolids enhance seedling establishment, plant growth and increases forage production in the species, but no data is available to measure changes in forage quality and animal performance. This …