A Comparison Of A Full Time Grazing And A Partial Storage Feeding System, For Dairy Cows,
2023
Agricultural Research Institute of Northern Ireland
A Comparison Of A Full Time Grazing And A Partial Storage Feeding System, For Dairy Cows, C. P. Ferris, D. C. Patterson
IGC Proceedings (1997-2023)
Partial storage feeding has been adopted by a number of Northern Ireland dairy farmers in recent years. This is due in part to increasing cow numbers, and as such, insufficient pasture close to the milking parlour to permit full time grazing. Partial storage feeding may also have environmental benefits, as well as reducing labour requirements associated with 'droving' and pasture management. In view of this, a study was undertaken to examine animal performance with either a full-time grazing, or a partial storage feeding regime.
Effect Of A Summer Period At Pasture On The Performance Of Young Bulls Offered Concentrates Ad Libitum,
2023
Teagasc, Ireland
Effect Of A Summer Period At Pasture On The Performance Of Young Bulls Offered Concentrates Ad Libitum, R. J. Fallon, M. G. Keane
IGC Proceedings (1997-2023)
Holstein bull calves can produce a 250 kg carcass at 11 to 12 months of age on indoor feeding of ad libitum concentrates. An outdoor period at pasture would reduce housing costs. Two experiments were undertaken to determine the effect of an outdoor period at pasture on concentrate intake, liveweight gain and selected carcass traits of Holstein young bulls.
Spring Calving Suckler Beef Systems: Influence Of Grassland Management System On Herbage Availability, Utilisation, Quality And Cow And Calf Performance To Weaning,
2023
Teagasc, Grange Research Centre, Ireland
Spring Calving Suckler Beef Systems: Influence Of Grassland Management System On Herbage Availability, Utilisation, Quality And Cow And Calf Performance To Weaning, M. J. Drennan, M. Mcgee, S. Kyne, B. O'Neill
IGC Proceedings (1997-2023)
Suckler beef systems in Ireland are primarily based on grass. Suckler systems vary in intensity but many operate low input systems and participate in REPS (Rural Environmental Protection Scheme). As there is a considerable cost associated with second-cut silage this research compared a two-cut system with a simplified low input one-cut system.
Effect Of Time Spent On Pasture On Milk Production And Quality In Latxa Dairy Sheep,
2023
NEIKER, Spain
Effect Of Time Spent On Pasture On Milk Production And Quality In Latxa Dairy Sheep, A. Garcia-Rodriguez, N. Mandaluniz, L. M. Oregui
IGC Proceedings (1997-2023)
Dairy sheep production systems in the Basque country are pasture based. Forage resources are managed by shepherds who match herbage, forage and supplement availability with production requirements. This is achieved through a part-time grazing system, where ewes spend 3 to 7 hours grazing. The aim of this study was to evaluate the effect of restricted access to pasture on milk production and quality.
Animal Unit Of Sheep (Zel Breed) Grazing In Mazandaran Grasslands In Iran,
2023
University of Tehran, Iran
Animal Unit Of Sheep (Zel Breed) Grazing In Mazandaran Grasslands In Iran, Hossein Arzani, Reza Erfanzadeh, S. Farazmand
IGC Proceedings (1997-2023)
Animal unit equivalents (AUEs), provide a means of summarising grazing capacity, calculating stocking rates and other stocking variables (Scarnecchia, 1990). Animal units (AU) are often defined in relation to the dominant animal type in an area In Iran there are 27 sheep breeds which are classified into three main body size classes, namely: small, medium and large. The objective of this experiment was to define animal units, animal and forage requirements for sheep grazing in Mozandaran grasslands.
Mixed Fattening Of Steers And Lambs On Improved Grasslands In Uruguay: I. Pasture Performance,
2023
INIA, Uruguay
Mixed Fattening Of Steers And Lambs On Improved Grasslands In Uruguay: I. Pasture Performance, D. F. Risso, Fabio Montossi, E. J. Berretta, R. Cuadro, I. De Barbieri, R. San Julián, A. Dighiero, A. Zarza
IGC Proceedings (1997-2023)
The use of P fertilisers together with legume broadcasting is a low cost and high impact technology for improving native grassland (Risso et al., 2001). Its use is increasing in Uruguay, although not for mixed grazing, even though this management is a common practice on native grasslands. Good pasture response may occur under mixed grazing when it is adequately managed (Nolan & Connolly, 1989). The following trials characterise pasture response with such management, in Uruguayan conditions.
Mixed Fattening Of Steers And Lambs On Improved Grasslands In Uruguay: Ii. Animal Performance And Productivity,
2023
INIA, Uruguay
Mixed Fattening Of Steers And Lambs On Improved Grasslands In Uruguay: Ii. Animal Performance And Productivity, D. F. Risso, Fabio Montossi, E. J. Berretta, R. Cuadro, I. De Barbieri, R. San Julián, A. Dighiero, A. Zarza
IGC Proceedings (1997-2023)
In cow-calf operations in Uruguay, mixed cattle and sheep grazing on rangelands is predominant, while fattening is a specialised process. Within certain limits of the lamb/steer ratio and stocking rate, a complementary grazing effect occurs under mixed grazing, improving net results (Nolan & Connolly, 1977; Risso et al., 2002). These trials characterise animal performance under such management.
The Rostock Energetic Feed Evaluation On The Base Of Net Energy,
2023
Oskar-Kellner-Institute of Animal Nutrition, Germany
The Rostock Energetic Feed Evaluation On The Base Of Net Energy, W. Jentsch, A. Chudy, M. Beyer, S. Kuhla
IGC Proceedings (1997-2023)
Feed evaluation was an emphasis of research from the foundation of the "Oskar-Kellner-Institute of Animal Nutrition" in 1953 at Rostock by Prof. Kurt Nehring. The aim of the research work was the elaboration of a feed evaluation system containing reference numbers of feed values and requirements of farm animals. The approach and the present system are outlined in this paper.
Constraints On Dairy Cattle Production From Locally Available Forages In Bangladesh,
2023
Bangladesh Agricultural University, Bangladesh
Constraints On Dairy Cattle Production From Locally Available Forages In Bangladesh, M. A. S. Khan
IGC Proceedings (1997-2023)
The productivity of milk producing animals in Bangladesh is low because of low individual yield and poor fertility. The reasons for the low productivity are complex but, in order of priority, appear to be (a) the imbalanced nature of the nutrients that arise from the digestion of the forage resources, (b) the incidence of disease/parasitism, and (c) the often harsh climatic circumstances. Thus, the purpose of this study was to find out the practical constraints on dairy cattle production from locally available forages under small holding village conditions of Bangladesh.
Effects Of Supplementary Concentrate Level And Separate Or Mixed Feeding Of Grass Silage And Concentrates On Rumen Fluid Composition In Steers,
2023
Teagasc, Ireland
Effects Of Supplementary Concentrate Level And Separate Or Mixed Feeding Of Grass Silage And Concentrates On Rumen Fluid Composition In Steers, J. Caplis, M. G. Keane, F. P. O'Mara
IGC Proceedings (1997-2023)
The effects of dietary concentrate level and method of feeding (separate or mixed) on performance and carcass traits of steers may be mediated through changes in rumen fluid composition. The objectives of this study were to determine the effects on rumen fluid composition of (1) supplementary concentrate level with grass silage, and (2) separate or mixed feeding of silage and concentrates,
Body Temperature In Free-Roaming Beef Cattle,
2023
University of Nebraska
Body Temperature In Free-Roaming Beef Cattle, T. L. Mader, S. L. Colgan
IGC Proceedings (1997-2023)
Body temperature (BT) measurements are traditionally used in diagnosing sick animals, but may also be used as an indicator of stress or activity. Based on results of metabolism studies, Mader et al. (1999) reported that BT can vary as much as 0.9oC and can depend on metabolisable energy (ME) of the diet consumed. Acceptable measures of BT can be obtained from the rectum, vagina, or ear canal. Technologies are also being developed for continuously monitoring BT via radio-telemetry. The objectives of this study were to determine the effect of high concentrate (low fibre) versus high fibre diets on …
Yield And Quality Parameters Of An Interspecific Hybrid Pennisetum Purpureum Schum. (Elephant-Grass) X Pennisetum Glaucum (L.) R. Br. Stuntz (Pearl Millet),
2023
Campinas Agronomic Institute, Brazil
Yield And Quality Parameters Of An Interspecific Hybrid Pennisetum Purpureum Schum. (Elephant-Grass) X Pennisetum Glaucum (L.) R. Br. Stuntz (Pearl Millet), J. A. Usberti Jr., R. Usberti, P. B. Alcantara, V. B. G. Alcantara, R. A. Possenti, M. A. C. Lucena
IGC Proceedings (1997-2023)
Elephant-grass is a tropical forage grass used either as a supplement fodder or for direct grazing. It usually shows regular nutritive value (6-13% crude protein, CP, and 55-60% forage digestibility) (Alcantara et al., 1981). Most of the available cultivars produce no viable seeds. On the other hand, pearl millet has high seed yielding potential along with high quality forage (>15% CP and 70% forage digestibility). However, it shows poor forage production, low field persistence under grazing and low regrowth potential after cutting or grazing. During the 90's, an interspecific hybrid between the two species was developed, trying to …
Characterizing A Vertebrate Microsite In The Late Cretaceous Hell Creek Formation,
2023
Winona State University
Characterizing A Vertebrate Microsite In The Late Cretaceous Hell Creek Formation, Anna L. Luessman
Research & Creative Achievement Day
The Late Cretaceous Hell Creek Formation, located in Eastern Montana and parts of North and South Dakota, represents a tidally-influenced fluvial environment that was home to a thriving ecosystem 66 million years ago. Today the formation is made of mudstones and sandstones that contain many vertebrate fossil microsites. Microsites are concentrations of fossilized vertebrate bones and teeth ranging in size from fractions of a millimeter to several centimeters. These sites frequently contain many different species of animals and plants, allowing us to paint a picture of what that environment was like in the Late Cretaceous Period. For this study, I …
Development And Evaluation Of Pennisetum Purpureum Mutants Through Irradiation With 60Co,
2023
Instituto de Ciencia Animal, Cuba
Development And Evaluation Of Pennisetum Purpureum Mutants Through Irradiation With 60Co, R. S. Herrera, M. García, R. Tuero, A. M. Cruz, A. Romero, N. Fraga
IGC Proceedings (1997-2023)
The development of plant mutants is a commonly used procedure nowadays. One way of obtaining mutant plants has been seed irradiation with gamma rays. As these studies are not common in tropical pasture species (Micke et al., 1993, Herrera, 2001), the objective of this study was the development and evaluation of Pennisetum purpureum mutants through irradiation with 60Co.
Small Leaf Mid-Rib Xylem Related To Leaf Freeze Tolerance Trait In Bahia (Paspalum Notatum Flugge) Grass Lines,
2023
Union County Extension Office
Small Leaf Mid-Rib Xylem Related To Leaf Freeze Tolerance Trait In Bahia (Paspalum Notatum Flugge) Grass Lines, J. W. Breman, A. R. Blount, T. R. Sinclair
IGC Proceedings (1997-2023)
Controlled freeze (-60o C) trials of 31 bahiagrass selections from a breeding program for cold tolerance by Blount et al. (2001) showed diverse genotype Leaf Tissue Cold Damage (LTCD). Breman et al. (2003) defined LTCD on a rating scale (1 = no damage to 9 = 100% leaf damage). Unique midrib damage was observed as part of LTCD in bahiagrass under transpiration stress after a freeze trial. Small xylem conduit diameter and area has been strongly correlated with reduced cavitation caused by freeze thaw cycles which maintain leaf tissue in evergreen temperate woody plants; further shown in …
Assessment Of Inter-Specific Diversity Of The Hedysarum Genus In Tunisia,
2023
Faculté des Sciences de Tunis, Tunisia
Assessment Of Inter-Specific Diversity Of The Hedysarum Genus In Tunisia, S. Marghali, H. Chennaoui, M. Marrakchi, N. Trifi-Farah
IGC Proceedings (1997-2023)
In Tunisia, many grassland and pasture species were menaced by genetic erosion. Thus, we were interested in the Hedysarum species which constitute a very important phytogenetic patrimony able to produce forage and restore destroyed pasture land especially in arid and semi-arid areas. In order to facilitate fodder improvement, we investigated the phenetic relationships among Hedysarum species using rDNA intergenic spacer (IGS) polymorphism.
Breeding A Psyllid-Resistant Interspecific Hybrid Leucaena For Beef Cattle Production In Northern Australia,
2023
The University of Queensland, Australia
Breeding A Psyllid-Resistant Interspecific Hybrid Leucaena For Beef Cattle Production In Northern Australia, Scott A. Dalzell, F. Lemos De Moraes, G. Solis Pasos
IGC Proceedings (1997-2023)
Production of the valuable fodder tree legume Leucaena leucocephala (leucaena) is limited to the subhumid (600-800 mm annual rainfall) areas of northern Australia by the psyllid insect pest Heteropsylla cubana. Defoliation caused by severe psyllid infestations can suppress forage yields of commercial leucaena varieties by 50-80%. Susceptibility to psyllid damage is a major impediment to grazier adoption of leucaena pastures in the more humid tropical areas of Australia. A comprehensive international agronomic evaluation of the entire Leucaena genus (Mullen et al., 2003) revealed that the artificial interspecific F1 hybrid of L. pallida x L. leucocephala ssp. glabrata …
Physical And Quality Seed Traits Observed In New Pigeon Pea (Cajanus Cajan) Hybrids,
2023
Plant Protection Agency, Brazil
Physical And Quality Seed Traits Observed In New Pigeon Pea (Cajanus Cajan) Hybrids, R. Usberti, J. A. Usberti Jr., R. H. Aguiar, F. C. Simoes, F. N. Cavalcante, M. Harris, Maria T. Colozza, J. C. T. Freitas
IGC Proceedings (1997-2023)
Pigeon pea seed production may be affected by factors such as % of pure seeds, mean seed weight, incidence of pests and diseases and environmental stresses. Harvested seeds from different cultivars may also vary in germination %, hardseededness and germination speed. Hardseededness (seed coat impermeability to water) commonly occurs in forage legume species (Hopkinson, 1993). There is considerable variation among different entries for seed characters but this is not considered within genetic materials. This research analysed harvested seeds of selected individuals of two segregating F2 pigeon pea populations for the above cited traits and assessed the range of variation …
Genetic Variability Of Yield And Its Components In Winter Forage Pea Cultivars,
2023
Institute of Field and Vegetable Crops, Serbia and Montenegro
Genetic Variability Of Yield And Its Components In Winter Forage Pea Cultivars, V. Mihailović, A. Mikić, Đ. Karagić, S. Katić, I. Pataki
IGC Proceedings (1997-2023)
The genus Pisum (peas) is rich in variability of morphological traits. It provides an excellent basis for breeding, but is also one of the reasons for the still undefined status of Pisum taxons (Mihailović et al., 2004a). The majority of forage pea cultivars used belongs to subspecies sativum and variety arvense (Maxted & Ambrose, 2000). The objective of our study was to determine genetic variability of yield and its components in six winter forage pea cultivars of different origin and to evaluate their breeding potential.
Agronomic Characteristics Of Novi Sad Winter Vetch Cultivars,
2023
Institute of Field and Vegetable Crops, Serbia and Montenegro
Agronomic Characteristics Of Novi Sad Winter Vetch Cultivars, V. Mihailović, A. Mikić, B. Ćupina, S. Vasiljević, D. Milić
IGC Proceedings (1997-2023)
Genus Vicia. contains important annual food and forage species such as field bean, V. faba., narbon vetch, V. narbonensis, and common vetch, V. sativa (Maxted, 1995), while Hungarian V. pannonica Crantz and hairy vetch V. villosa also play an important role in the Balkans. Winter vetches are excellent forage catch crops useful for sustainable agriculture and organic farming (Ċupina et al., 2004). Our study was aimed at determining the agronomic characteristics of the winter vetch cultivars developed in Novi Sad, assessing thus their ability for successful growing in the prevailing conditions of Serbia and Montenegro.
