Physical Sciences and Mathematics Commons^™

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 …

Herbage Mass, Forage Accumulation And Nutritive Value Of Brachiaria Decumbens In A Silvopastoral System, Domingos S. C. Paciullo, Carlos A. M. Gomide, Carlos R. T. Castro, Carlos A. B. Carvalho, Rogério M. Maurício, Mirton J. F. Morenz

IGC Proceedings (1997-2023)

The use of silvopastoral systems has been suggested to ensure sustainability in animal production systems because of their potential to increase soil fertility, improve forage quality, promote animal thermal comfort and provide income diversification for the producer (Paciullo et al. 2011). Nevertheless, the shade provided by trees may affect plant growth and nutritive value of forage (Sousa et al. 2010).

This study aimed to assess the impact of shading on the allocation pattern of dry matter and on herbage nutritive value, under various shading regimes, in a silvopastoral system, during both the dry and rainy seasons.

Forage Quality Indices Of Some Important Grass Species Of Iranian Rangelands, Hossein Arzani, Javad Motamedi, Mohammad Ali Zarechahouki

IGC Proceedings (1997-2023)

To be informed of the forage quality indices is one of the fundamental essentials for determination of the amount of forage sufficient for the daily requirements of animal in rangelands and wildlife habitats. This amount would be different depending on the vegetative composition and consequently the forage quality (Arzani, 2009). In this regard, grasses are considered one of the most important plants in the vegetative composition of rangelands in the country’s different climate zones that are grazed by the animals and meet a considerable amount of animal requirements (Arzani et al. 2010). Therefore, the values of forage quality indices …

Estimating Crude Protein Concentration Of A Grass Sward Using Spectral Measurements, Joseph L. Moyer, Chuyuan Wang, Bohua Ling, Kevin P. Price

IGC Proceedings (1997-2023)

While measurement of forage mass (FM) is fundamental to evaluating sward productivity, its forage quality determines the value for grazing. Optical sensing devices have varying potential for estimating forage characteristics. Instruments such as the Greenseeker®, which measures normalized difference vegetation index (NDVI) have been related to various characteristics, but are confounded with canopy traits (Biewer et al. 2009). Simultaneous readings of NDVI and FM were used to separate their contributions to sward crude protein CP using multiple regression (Moyer et al. 2010).

Relationships in swards of tall fescue (Lolium arundinacium Schreb.) were poorer than in other species, …

Forage Quality Characteristics Of Lotus Tenuis, Narrow-Leaf Birdsfoot Trefoil, Adam D. Langworthy, Peter A. Lane, David Parsons, Eric Hall

IGC Proceedings (1997-2023)

Narrow-leaf birdsfoot trefoil (Lotus tenuis Waldst. & Kit.) is a herbaceous perennial legume of Mediterranean origin, which can grow in saline and waterlogged environments (Teakle et al. 2010). If this species is to be cultivated in regions constrained by these abiotic factors, it is also vital that herbage produced has a forage quality acceptable for ruminant production. In addition, proanthocyanidin (PA) content is important, and legume species can cause animal production issues if PA content is low, (< 0.02%), e.g. fro-thy bloat, or high (> 5 %), e.g. decreased palatability and digestibility (Larkin et al. 1999). This study examined the PA content and …

Effect Of Defoliation Management On Expression Of The ‘High Sugar’ Cultivar Trait In Tasmania, Lydia R. Turner, Daniel J. Donaghy, Keith G. Pembleton, Richard P. Rawnsley

IGC Proceedings (1997-2023)

The proposed benefits of perennial ryegrass (Lolium perenne L.) cultivars with a high concentration of water soluble carbohydrates (WSC) for the dairy industry in Australia include enhanced rumen protein metabolism, and potential improvements in milk components (Stewart et al. 2009). Perennial ryegrass cultivars have been developed to express higher levels of WSC, and extensive trials have shown consistent trait expression in Europe (reviewed by Edwards et al. 2007a). In New Zealand and Australia, there has been less consistent expression of the high sugar trait (Smith et al. 1998; Parsons et al. 2004; Francis et al …