Effect Of Feeding L-Carnitine And Sunflower Seeds On Cla Content Of Pasture-Fed Beef,
2023
Agriculture and Agri-Food, Canada
Effect Of Feeding L-Carnitine And Sunflower Seeds On Cla Content Of Pasture-Fed Beef, S. L. Scott, W. P. Mccaughey, K. E. Buckley
IGC Proceedings (1977-2023)
Pasture finishing enhances levels of conjugated linoleic acids (CLA) in beef lipids (Shanta et al. 1997). CLA (e.g., C18:2 c9, t11), formed during biohydrogenation of polyunsaturated fatty acids (PUFA) in the rumen, can reduce the incidence of heart disease, cancer and obesity in humans. However, pasture finishing cattle can reduce carcass grade. Feeding pasture-fed cattle a high-grain diet for a short finishing period (~60 d) improves grades but may reduce lipid CLA levels. A feeding regime is required that maintains the positive nutritional attributes of pasture-fed beef and improves the meat grade. The objective of this study was to investigate …
Content, Pattern And Esterification Of Fatty Acids In Fresh Grass In Relation To Extraction Solvents And Sample Storage Conditions,
2023
Ghent University, Belgium
Content, Pattern And Esterification Of Fatty Acids In Fresh Grass In Relation To Extraction Solvents And Sample Storage Conditions, Marta Lourenço, Veerle Fievez
IGC Proceedings (1977-2023)
The relatively high content of linolenic acid (C18:3 n-3) in forages has lead to research on the role of forage based feeding strategies in the production of healthier milk. In these studies, forage samples are often stored, although analysis immediately after harvest has been considered to avoid oxidative deterioration and transformation of unsaturated fatty acids (FA) (Christie, 1993; Frankel, 1998). In the current study, we evaluated the effect of different storage conditions (fresh grass samples under liquid nitrogen (liq.N2) or in a cool box during 3h or at -20ºC, -80ºC or in the extraction solvent at -20°C, during …
Traditional Cattle Feeding Stuffs: Fatty Acid Profile,
2023
Escola Superior Agrária de Bragança, Portugal
Traditional Cattle Feeding Stuffs: Fatty Acid Profile, A. M. Peres, L. Dias, J. Sá Morais, F. Sousa, J. M. Pires
IGC Proceedings (1977-2023)
Dietary polyunsaturated fatty acids (PUFA) are perceived to be healthier than saturated fatty acids. Therefore, in order to be able to manipulate the fatty acid profile of meat and/or milk, to respond to the consumer demands, knowledge of the fatty acid profile of feeding stuffs for cattle is of major importance (LeDoux et al., 2002; Petit, 2002). In this work a preliminary study was made of the fatty acid profile of the cow's diet in a traditional farm production system.
Finishing Effect On Fatty Acid Profile Of Intramuscular Fat In Extensively Reared Steers,
2023
SERIDA, Spain
Finishing Effect On Fatty Acid Profile Of Intramuscular Fat In Extensively Reared Steers, N. Aldai, B. E. Murray, A. I. Nájera, K. Osoro
IGC Proceedings (1977-2023)
Both the amount and the composition of fat depots in beef may be influenced by several factors i.e. feeding system. Related to this factor, extensively reared cattle may produce beef with a more desirable fatty acid (FA) composition in terms of beneficial effect on human health, especially in relation to the content of n-3 type FAs. However, concentrate finishing improves some carcass traits and meat quality. In this sense, the objective of this work was to study the effect of concentrate finishing on intramuscular (IM) FA profile of Longissimus thoracis (LT) muscle in pasture fed steers.
Effect Of Perennial Ryegrass Cultivars On The Fatty Acid Composition In Milk Of Stall-Fed Cows,
2023
University of Ghent, Belgium
Effect Of Perennial Ryegrass Cultivars On The Fatty Acid Composition In Milk Of Stall-Fed Cows, Anjo Elgersma, H. J. Smit, G. Ellen, S. Tamminga
IGC Proceedings (1977-2023)
Herbage provides bulk feed for ruminants and plant lipids, especially C18:3, are a major source of benefical fatty acids (FA) in milk. There are very few direct comparisons allowing a precise evaluation of the effects of the basal forage diet on milk FA composition. Grass quality differences can affect rumen metabolism and there could be opportunities to change the composition of ruminant products through choice of grass cultivar. To test this hypothesis, six cultivars were fed to dairy cows in a stall-feeding trial with fresh grass to evaluate the effect of grass cultivar on rumen VFA and milk FA composition …
Quantitative And Qualitative Characteristics Of The Loin Of Grazing Lambs From Different Production Systems,
2023
Universidade Federal do Paraná, Brazil
Quantitative And Qualitative Characteristics Of The Loin Of Grazing Lambs From Different Production Systems, Alda L. G. Monteiro, C. H. E. C. Poli, G. J. Bosquetto, T. D. M. Ribeiro, O. R. Prado, Maria Angela M. Fernandes, C. Gasperin
IGC Proceedings (1977-2023)
The international sheep market is supplied mainly from New Zealand and Australia, where there are advanced production systems and marketing organisations, and where the product is exported mainly in the form of carcasses and cuts. In Brazil, the farmers should aim to produce a younger animal, with an adequate fat level at an optimum stage of muscle development, in order to gain market share The proportions of muscle, bone and fat largely determine the value of the carcass, and the breed and age of animal, in addition to other factors such as feeding systems, cause variation in the proportions (Purchas …
Processing Quality Of Organic And Conventional Milks From Irish Pasture Based Systems,
2023
Teagasc, Ireland
Processing Quality Of Organic And Conventional Milks From Irish Pasture Based Systems, B. O'Brien, P. Murphy, N. Culleton, P. O'Connor
IGC Proceedings (1977-2023)
The maintenance of white clover in the pasture sward is essential to viable organic farming in Ireland. Thus, the diet of the organically and conventionally managed cow is different. It is well documented that milk composition is affected by cow diet (Kefford et al., 1995). This study addresses the issue of technological quality differences between conventionally and organically produced milks.
Utilizing Forages To Program Steer Growth Patterns To Achieve Consistent Quality Beef,
2023
Texas Agriculture Experiment Station
Utilizing Forages To Program Steer Growth Patterns To Achieve Consistent Quality Beef, B. G. Warrington, J. W. Holloway, R. K. Miller, H. Lippke
IGC Proceedings (1977-2023)
Many options are available for programming stocker cattle growth patterns through forage selection. In semi-arid south Texas rapid growth rates can be achieved by grazing irrigated small grains (oats, wheat and ryegrass) and slow growth rates are possible grazing native range pastures. Ryegrass (RG) nutrient quality indicates potential gains greater than 1.0 kg/d for steers, while typical winter native range (NR) pasture indicates gains of 0.45 kg/d or less. The purpose of this experiment was to quantify the impact of different programmed growth patterns on beef retail product especially size, marbling and tenderness.
The Effect Of Post-Weaning Management On The Physico-Chemical And Textural Quality Of Beef From Bulls And Steers,
2023
SERIDA, Spain
The Effect Of Post-Weaning Management On The Physico-Chemical And Textural Quality Of Beef From Bulls And Steers, M. Oliván, P. García, M. J. Martínez, M. Mocha, A. Martínez, P. Castro, K. Osoro
IGC Proceedings (1977-2023)
There is an increasing interest for extensification in Europe due to environmental and animal welfare concerns. Furthermore, forage-fed beef may present benefits for human health. However, animals fed at pasture produce in some cases darker and tougher meat. It has been shown that castration or a grain-finishing period before slaughter could improve some sensory traits of beef from pasture. The objective of this work was to study the impact of castration and four feeding systems (grazing, grazing + 70 days concentrate, grazing + 100 days concentrate, 200 days concentrate) on the quality of beef from yearling bulls and steers.
Effects Of Supplementary Concentrate Level And Separate Or Mixed Feeding Of Grass Silage And Concentrates On Carcass Tissue Colour Traits In Steers,
2023
Teagasc, Ireland
Effects Of Supplementary Concentrate Level And Separate Or Mixed Feeding Of Grass Silage And Concentrates On Carcass Tissue Colour Traits In Steers, J. Caplis, M. G. Keane, A. P. Moloney, F. P. O'Mara
IGC Proceedings (1977-2023)
The level of supplementary concentrates fed with grass silage and the method of feeding (separate or mixed) may affect carcass tissue colour in steers. The objectives were to determine the effects of (1) supplementary concentrate level with grass silage, and (2) separate or mixed feeding of silage and concentrates, on muscle and fat colour.
Growth Characteristics Of Ecotype Superior Line Of Bermudagrass And Development Of Its Rdna Markers,
2023
National Livestock Research Institute, South Korea
Growth Characteristics Of Ecotype Superior Line Of Bermudagrass And Development Of Its Rdna Markers, Y. W. Rim, K. Y. Kim, M. J. Kim, B. R. Sung, Y. C. Lim, E. S. Chung
IGC Proceedings (1977-2023)
Interest in turfgrass has steadily increased in Korea since the 2002 Korea-Japan World Cup . Use of zoysiagrass (Zoysia japonica L.) has been limited due to its slow recovery, low shoot density, short green period and low wear tolerance during dormancy (Lee et. al., 1999). Bermudagrass has high quality and fast recovery, but has low cold tolerance (Richardson et. al., 1978). This research compared the growth characteristics of a superior line of bermudagrass, named as Joyspy with other standard cultivars and to develop its rDNA markers.
Effects Of Supplementary Concentrate Level And Separate Or Mixed Feeding Of Grass Silage And Concentrates On Carcass Tissue Composition In Steers,
2023
Teagasc, Ireland
Effects Of Supplementary Concentrate Level And Separate Or Mixed Feeding Of Grass Silage And Concentrates On Carcass Tissue Composition In Steers, J. Caplis, M. G. Keane, F. P. O'Mara
IGC Proceedings (1977-2023)
Supplementary concentrate level may affect carcass composition in steers. Feeder wagons facilitate feeding and management. The objectives were to determine the effects of (1) supplementary concentrate level with grass silage, and (2) separate or mixed feeding of silage and concentrates, on ribs joint composition.
Lipid Oxidation And Sensory Characteristics Of Grass-Fed Beef: Effect Of Duration Of Grazing Prior To Slaughter,
2023
Teagasc, Ireland
Lipid Oxidation And Sensory Characteristics Of Grass-Fed Beef: Effect Of Duration Of Grazing Prior To Slaughter, A. P. Moloney, F. Noci, F. J. Monahan, G. E. Nute, R. I. Richardson
IGC Proceedings (1977-2023)
Beef from cattle produced from grass has a higher concentration of fatty acids considered to be beneficial to human health than beef produced from more intensive production systems and this increase in fatty acid concentration is dependant on the duration at pasture prior to slaughter (Noci et al., 2003). Improvements in the fatty acid composition of beef must not impair other quality characteristics of beef. Little information is available on the pattern of change of quality characteristics in grazing animals. The objective of this study was to determine the shelf-life and eating quality of beef from cattle produced from …
Antioxidative Activities Of Alfalfa And Timothy Varieties,
2023
National Livestock Research Institute, South Korea
Antioxidative Activities Of Alfalfa And Timothy Varieties, J. K. Lee, H. S. Park, J. G. Kim, B. H. Paek, J. H. Fike
IGC Proceedings (1977-2023)
The term "functional foods" is often used as a generic description for the beneficial effects of ingested foods that go beyond their traditional nutritive value (Bauman et al., 2001). Milk and dairy products are important dietary sources of nutrients, providing energy, high quality protein, and a variety of vitamins and minerals. Recent research has focused on altering the fat and protein content of milk and other dairy products in order to improve their nutrient content to more aptly reflect current dietary recommendations and trends. As a result, additional focus is being given to designing foods that have beneficial effects …
Forage Yield And Nutritive Value Of 30 Cultivars Of Maize For Silage In The Highland Valleys Of Central Mexico,
2023
INIFAP, Mexico
Forage Yield And Nutritive Value Of 30 Cultivars Of Maize For Silage In The Highland Valleys Of Central Mexico, G. Tovar, J. L. Arellano, M. E. Sosa, C. Sánchez, H. P. Pérez, E. Vera, U. M. Vera, J. I. Vázquez
IGC Proceedings (1977-2023)
In Mexico, the selection of maize cultivars for forage has mainly been based on dry matter (DM) yields, not considering nutritional quality as an important evaluation parameter. The objective of this study was to assess forage yield and nutritive value of Highland and Subtropical maize cultivars for silage in the Highland Valleys of Central México.
Grazing Effects On The Seed Pool Of Stipa Krylovii And Its Genetic Diversity In Relationship To The Plant Population On A Typical Steppe Community In Inner Mongolia,
2023
Inner Mongolia Agricultural University, Inner Mongolia
Grazing Effects On The Seed Pool Of Stipa Krylovii And Its Genetic Diversity In Relationship To The Plant Population On A Typical Steppe Community In Inner Mongolia, B. Han, M. Zhao, Walter D. Willms
IGC Proceedings (1977-2023)
Stipa krylovii is an important tufted forage species on the typical steppe in Inner Mongolia and is sensitive to heavy grazing pressure. Vegetative recovery of plant density is dependent on the seed bank, which is a genetic reservoir that supports the vegetative expression of the species thus enhancing its resilience (McCue and Holtsford 1998). The ability of the seed bank to support the Stipa krylovii population is dependent on its size and genetic diversity. Therefore, we conducted a study to determine the effects of heavy grazing pressure on its seed reserves and examine its genetic diversity in relation to surviving …
Grazing Effects On Genetic Diversity Of Festuca Campestris Rydb. And Stipa Grandis L. On The Native Grasslands In Canada And China, Respectively,
2023
Inner Mongolia Agricultural University, Inner Mongolia
Grazing Effects On Genetic Diversity Of Festuca Campestris Rydb. And Stipa Grandis L. On The Native Grasslands In Canada And China, Respectively, M. Zhao, Walter D. Willms, B. Han, G. Han
IGC Proceedings (1977-2023)
Genetic drift or selectively neutral mutation in finite populations may result in genetic diversity within a natural population (Kimura, 1986). Genetic diversity influences the resilience of a species to survive perturbations or adapt to changes in its environment. Grazing by livestock may affect genetic diversity by exerting selection pressure on grazing sensitive species. In this study, we examine the effects of heavy sustained grazing pressure on the genetic diversity of Festuca campestris Rydb. and Stipa grandis L. These species are found on the Canadian Plains and the steppes of Inner Mongolia, respectively. Each is an important forage species that dominates …
Hybrids Between Meadow And Smooth Bromegrass: A New Forage Crop For Canada,
2023
Saskatoon Research Centre, Canada
Hybrids Between Meadow And Smooth Bromegrass: A New Forage Crop For Canada, B. E. Coulman, Y. S. N. Ferdinandez
IGC Proceedings (1977-2023)
Smooth bromegrass (Bromus inermis Leyss.) has been an important hay grass in the agricultural regions of western Canada for approximately 50 years. Meadow bromegrass (B. riparius Rehm.) has become the most important pasture species in this region over the last 15 years. It is possible to produce hybrids between these species, which could lead to the development of a type of bromegrass which would be useful for both hay and pasture purposes.
The Evaluation Of Kikuyu Oversown With Ryegrass And Clover In Terms Of Milk Production,
2023
Western Cape Department of Agriculture, South Africa
The Evaluation Of Kikuyu Oversown With Ryegrass And Clover In Terms Of Milk Production, Robin Meeske, Philip R. Botha, Hennie A. Snyman
IGC Proceedings (1977-2023)
Kikuyu (Pennisetum clandestinum) comprises the greater part of irrigated summer and autumn pasturage for milk production in the Southern Cape. Milk production per cow is limited by low forage quality. The aim of the study was to determine the milk production from kikuyu (K), kikuyu oversown with annual ryegrass (Lolium multiflorum spp. cv Energa) (KR), kikuyu oversown with a mixture of perennial ryegrass (Lolium perenne cv Yatsyn, Dobson) and perennial white clover (Trifolium repens cv Haifa, Waverley) and red clover (Trifolium pratense cv Kenland, Cherokee) (KRC) and kikuyu oversown with a mixture of perennial …
The Seasonal Nutritional Value Of Kikuyu Oversown With Ryegrass And Clover,
2023
Western Cape Department of Agriculture, South Africa
The Seasonal Nutritional Value Of Kikuyu Oversown With Ryegrass And Clover, Robin Meeske, Philip R. Botha, Hennie A. Snyman
IGC Proceedings (1977-2023)
To overcome the seasonality and relatively low forage quality of kikuyu (Pennisetum clandestinum), annual ryegrass (Lolium multiflorum spp.), perennial white (Trifolium repens) and red clover (Trifolium pratense) can be incorporated into an existing kikuyu stand to improve pasture quality and spring production. The aim of this study was to determine the quality of kikuyu (K), kikuyu oversown with annual ryegrass (KR), kikuyu oversown with a mixture of perennial ryegrass (Lolium perenne) and perennial white and red clover (KRC) and kikuyu oversown with a mixture of white and red clover (KC), in …
