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Articles 541 - 570 of 3746
Full-Text Articles in Entire DC Network
Protein Degradability Effect And Supplementation Level On Pasture Utilization, A.V M. Franco, P De Andrade, G L. Franco
Protein Degradability Effect And Supplementation Level On Pasture Utilization, A.V M. Franco, P De Andrade, G L. Franco
IGC Proceedings (1977-2023)
The objective was to determine the effect of protein degradability and supplement level on forage degradation. Steers fistulated were utilizated in brachiaria (Brachiaria brizantha) pasture. A randomized block design was used with a control treatment and supplements according to a factorial scheme combining low, medium and high protein degradability with supplementation levels: low, medium and high analysed as principal treatments and incubation time as splitplot by SAS. Nylon bags were incubated at 4; 8; 12; 24; 48; 72; 96 and 120 hours to determine DM, CP and NDF degradation. There was no effect (P>0.05) of protein degradability …
Energetic Feed Value Of Grassland Products In Ruminants, A Chudy
Energetic Feed Value Of Grassland Products In Ruminants, A Chudy
IGC Proceedings (1977-2023)
A method for calculating the energetic feed value, based on the digestible nutrients and on the relations of the utilisation of the energy of the nutrients (carbohydrates = 100) for ATP syntheses is described. This relative scale is a nominal feed value (NFV). It characterises the ATP potential of the feedstuffs and is therefore equivalent to the efficiency of utilisation of the feed energy in the catabolic metabolism (non-thermal maintenance, muscular work (movement)) and energy costs for syntheses as well as the productive performance as energy retention in animal products. Therefore this scale secures a precise precognition of the animal …
Symbiotic Potential And N Returns In Forage And Grain Legumes For Improving The N Economy Of Tropical Cropping Systems, F D. Dakora, J A. Abdogoba
Symbiotic Potential And N Returns In Forage And Grain Legumes For Improving The N Economy Of Tropical Cropping Systems, F D. Dakora, J A. Abdogoba
IGC Proceedings (1977-2023)
There were marked cultivar and species differences in the amounts of N fixed and potential N returns in five forage legumes and ten groundnut (Arachis hypogaea L.) cultivars evaluated for symbiotic performance in both Guinea and Sahel savanna environments. Of the forage legumes, the Crotalaria and Lablab species accumulated greater symbiotic N and therefore showed higher potential N returns for improving the N economy of soils in both Guinea and Sahel savanna in Africa. However, Lablab appeared to be better adapted to the drier Sahel environment compared to the other species. When nutrient imbalances in the Guinea savanna soil …
Integration Of Forage Legumes Into Maize/Elephant Grass Systems For Dairy Farming, E N. Sabiiti, J S. Mugerwa, P Ngategize, G Kyeyune
Integration Of Forage Legumes Into Maize/Elephant Grass Systems For Dairy Farming, E N. Sabiiti, J S. Mugerwa, P Ngategize, G Kyeyune
IGC Proceedings (1977-2023)
The livestock sector contributes about 30% of the total value of agricultural production but the sector does not meet the demand for milk. Currently, there is serious migration of the rural population to urban centres and this will lead to high demand for milk and milk products. Therefore, the development of peri-urban dairy production by the small scale farmers appears a promising option to solve the problems of malnutrition, increase household incomes and improve the quality of life of these farmers. The dominant production system practised is zero-grazing using improved dairy breeds and feeding elephant grass (Pennisetum purpureum) …
Arachis Pintoi: A Multipurpose Legume For Sustainable Land Use, P J. Argel, P C. Kerridge, E A. Pizarro
Arachis Pintoi: A Multipurpose Legume For Sustainable Land Use, P J. Argel, P C. Kerridge, E A. Pizarro
IGC Proceedings (1977-2023)
Perennial peanut (A. pintoi) is a multiple-use tropical legume that can be used in association with a grass or as a cover crop in tree plantations. As a forage plant it has high forage quality and persistence under heavy grazing. As a cover crop and for erosion control it forms a dense cover under shade, excludes weeds and contributes to soil improvement.
A Model To Determine The Optimum Forage Combination And Level Of Concentrate For Dairy Cows, E Jahn, G Gutierrez, R Velasco, M Silva
A Model To Determine The Optimum Forage Combination And Level Of Concentrate For Dairy Cows, E Jahn, G Gutierrez, R Velasco, M Silva
IGC Proceedings (1977-2023)
A model was developed to simulate a milk production system. The program determines the milk production based on energy nutrition, calving date, cow potential and defines grazing sequence and harvesting dates. It can simulate different stocking rates, paddock sizes, levels of production according to pasture quality, seasonal production and concentrate intake. The output of the model is used for an economical analysis which evaluates costs and returns; for some of the most sensitives factors that affect economic returns like prices of milk and concentrate, pasture production and others. The program makes an analysis of sensitivity where these factors are varied …
Small Grains In Cropping Systems To The Brazilian Southern Regions, R S. Fontanelo, L De J.A Del Duca, R S. Fontaneli
Small Grains In Cropping Systems To The Brazilian Southern Regions, R S. Fontanelo, L De J.A Del Duca, R S. Fontaneli
IGC Proceedings (1977-2023)
Winter cereals genotypes (oats, wheat, rye, barley, and triticale) were evaluated for forage and grain yield at the experimental area of the Wheat National Research Center (EMBRAPA/CNPT) and Agronomy College of the Universidade de Passo Fundo (UPF/FA), in Passo Fundo, RS state, southern Brazil, during the years 1992-94. Three cutting frequencies were applied: no cutting, one and two cuttings. A completely random block design with split-plots and three replicates was used. The crops were established under conventional tillage. The fertilization was 200- 300 kg/ha 5-25-25 , plus 22.5-30.0 kg/ha of N (urea) during tiller period (before 45 days after planting …
Constraints To Production Of Annual Medic (Medicago Spp.) Pastures In Southern Australia, M D. Denton, W D. Bellotti, C R. Hill, S P. Taylor
Constraints To Production Of Annual Medic (Medicago Spp.) Pastures In Southern Australia, M D. Denton, W D. Bellotti, C R. Hill, S P. Taylor
IGC Proceedings (1977-2023)
A field experiment was used to determine the effects of the root lesion nematode (Pratylenchus neglectus) and phospate and zinc nutrition on the production of annual medic pastures. Elimination of nematodes (nematicide increased shoot and seed production significantly and zinc and nematicide in combination significantly reduced numbers of nematodes present in roots.
Tropical Corn For Silage In Multiple Cropping Systems, J C. Burns, D S. Fisher
Tropical Corn For Silage In Multiple Cropping Systems, J C. Burns, D S. Fisher
IGC Proceedings (1977-2023)
This study compared the yield potential and inherent nutritive value and quality of tropical corn (Zea mays L.) with temperate corn and two forage sorghums [Sorghum bicolor (L.) Moench] for use in multiple cropping systems. Tropical corn showed high dry matter yield potential (19.3 Mg ha-1) compared with a selected temperate corn (14.7 Mg ha-1) or with an intermediate (8.5 Mg ha-1) or taller growing forage-type sorghum (10.3 Mg ha-1). Neutral detergent fiber concentration (g kg-1) was lower for temperate corn (330) than for tropical (548) corn which had a concentration similar to the intermediate (497) and forage-type …
Common Toadflax (Linaria Vulgaris) A Persistent Weed In Alfalfa (Medicargo Sativa) Hay Fields, J R. King, L Zaychuk
Common Toadflax (Linaria Vulgaris) A Persistent Weed In Alfalfa (Medicargo Sativa) Hay Fields, J R. King, L Zaychuk
IGC Proceedings (1977-2023)
The spread and persistence of common toadflax (Linaria vulgaris) when growing alone and in competition with alfalfa (Medicargo sativa) maintained as a hay crop in central Alberta Canada was monitored over a four year period. Competition from alfalfa reduced the rate of spread of the weed, and multiple harvests of the crop prevented toadflax seed set. The presence of the weed did not significantly affect the yield of alfalfa.
The Beneficial Effects Of Short-Term Rotation Systems Of Winter Forage Crops With Maize On Dry Farming Land Of Southwestern China, S R. Zhou, U Simon, K Mao
The Beneficial Effects Of Short-Term Rotation Systems Of Winter Forage Crops With Maize On Dry Farming Land Of Southwestern China, S R. Zhou, U Simon, K Mao
IGC Proceedings (1977-2023)
The objective of this study was to sift out the suitable and better short-term rotation systems of winter forage mixture with maize on dry farming land for the local farmers in Southwestern China. Four species of legume, Italian ryegrass and maize were used to organize six treatments for this experiment. The result showed that the three rotation systems of Astragalus sinicus (80%) + Lolium multiflorum (20%) ’ Zea mays, Medicago hisida (70%) + Lolium multiflorum (30%) ’ Zea mays and Vicia villosa (75%) + Lolium multiflorum (25%) ’ zea mays obtained good forage values (TDOM 4.06-4.36 t/ ha, CP 1.10-1.58 …
The Comparison Of Different Short-Term Rotation Systems Of Winter Forage Crops With Rice In Subtropical Plain Region Of Southwestern China, U Simon, S R. Zhou, K Mao
The Comparison Of Different Short-Term Rotation Systems Of Winter Forage Crops With Rice In Subtropical Plain Region Of Southwestern China, U Simon, S R. Zhou, K Mao
IGC Proceedings (1977-2023)
The objective of this study was to explore the possibility of growing winter forage crops in the present farming system with simple grain production only in subtropical plain region of southwestern China. The result showed that the four rotation systems i.e. Astragalus sinicus (70%) + Lolium multiflorum (30%) rice, Medicago hispida (75%) + Lolium multiflorum (25%) rice, Lolium multiflorum (20%) + Vicia villosa (80%) rice and Astragalus sinicus (80%) + Brassica napus (20%) rice obtained good forage values (TDOM 3.35-4.12 t/ha, CP 1.12-1.31 t/ha, ME 2.53-3.19 X 104 MJ/ha), at the same time, obtained better rice yields (DW 6.35-7.17 t/ha) …
Intake, Growth And Feed Preference By Steers Fed Combinations Of Alfalfa And Annual Ryegrass Silage, E Charmley
Intake, Growth And Feed Preference By Steers Fed Combinations Of Alfalfa And Annual Ryegrass Silage, E Charmley
IGC Proceedings (1977-2023)
Nutritive value and intake of legumes is generally considered superior to grasses when ensiled at similar digestibility. The objectives of this experiment were to determine the optimum combination of annual ryegrass (Lolium multiflorum) and alfalfa (Medicago sativa) silages to maximize growth rate of steers fed silage, determine chemical components which influenced performance, and to determine if steers selected the optimum mixture when given a choice. Both silages contained similar concentrations of dry matter, acid detergent fibre and organic acids, but alfalfa silage had higher concentrations of nitrogen (N), soluble N and ammonia N. Annual ryegrass contained …
Storage Losses In Large Round Bale Using Various Storage Methods For Six And Eighteen Months, R C. Reeder, D H. Samples, H M. Bartholomew, S L. Boyles
Storage Losses In Large Round Bale Using Various Storage Methods For Six And Eighteen Months, R C. Reeder, D H. Samples, H M. Bartholomew, S L. Boyles
IGC Proceedings (1977-2023)
Grass hay was baled with a variety of balers and tying materials in June, 1994 and 1995, at Jackson, Ohio. The bales were prepared and stored several ways. Waste hay accounted for less than ten percent of the dry matter after storage for six and eighteen months in all cases except one (a plastic wrap system intended for use with haylage). Bales stored inside had no waste. The best outdoor storage system, with less than one percent waste, used a ‘bale bonnet’ (top half covered with a plastic sheet) with the bale on a slatted pallet. One group of bales …
Effect Of The Ammoniation On Brachiaria Decumbens Hays, B Rosa, R A. Reis, K T. Resende, L.R De A. Rodrigues, C C. Jobim
Effect Of The Ammoniation On Brachiaria Decumbens Hays, B Rosa, R A. Reis, K T. Resende, L.R De A. Rodrigues, C C. Jobim
IGC Proceedings (1977-2023)
The effect of the ammoniation on B. decumbens hay obtained during the phase of seed maturation were studied as follows: hay not treated and hay treated with 2 or 3% of NH3, or 3.6 or 5.4% of urea. Ammoniation reduced the contents (g/kg DM) of NDF, hemicellulose, ADF, and lignin and increased the contents of total N, and ADIN; the IVDMD; the IVOMD; the “in situ” degradability of DM and OM and the apparent digestibility (g/kg nutrient) of DM, OM, and CP, as well increased the daily voluntary intake (g/kg0.75) of DM, the digestible DM, OM, the digestible OM, the …
Influence Of Drying Method And Temperature Of Ruminal Degradable Protein Of Switchgrass, D E. Farnham, K J. Moore, J R. George
Influence Of Drying Method And Temperature Of Ruminal Degradable Protein Of Switchgrass, D E. Farnham, K J. Moore, J R. George
IGC Proceedings (1977-2023)
The nutritional value of herbage protein fed to ruminant livestock can be influenced greatly by the extent to which it is degraded in the rumen. This study was conducted to determine if drying method and temperature alters measurements of in situ ruminal escape protein (EP) of switchgrass herbage. Switchgrass harvested at the pre-heading stage was either air dried, freeze dried, or oven dried at 38, 49, 60, or 71° C. Samples from each of the six drying treatments were digested in situ in Dacron bags for 4, 8, 12, or 16 h. Drying treatment had a significant impact on EP …
Ensilage For Low Resources Farmers 2. Poultry Litter As Cheap Additive, F.H K. Asiedu, C A. Alexander, G Proverbs
Ensilage For Low Resources Farmers 2. Poultry Litter As Cheap Additive, F.H K. Asiedu, C A. Alexander, G Proverbs
IGC Proceedings (1977-2023)
The effect of poultry litter (15% wet basis) additive on the quality of king grass (Pennisetum purpureum x P. americanum) silage was studied in a randomized block design experiment (8 replications). Compared with grass silage (G), grass + poultry litter (G+P) caused significant (P<0.05) reduction in moisture (G, 716 v G+P, 670 g/ kgDM), pH (5.41 v 4.72) and butyric acid (9.6 v 5.5 g/kgDM). Crude protein (CP, Nx6.25, g/kgDM), in vitro digestibility (IVOMD, g/ kgDM) and metabolizable energy (ME, MJ/kgDM) increased from (G)104, 536 and 8.00 to (G+P) 127, 613 and 9.19. In a feeding trial using St. Elizabeth x Barbados Blackbelly lambs G+P gave significantly (P<0.05) higher daily gain (182 v 149 for G). This was related to significantly (P<0.05) higher intake of CP and ME from G+P (71.9 v 55.1 g/d and 5.20 v 4.24 MJ/d).
Additives As Preservatives For Wrapped Round Bales Silage Made Under Tropic Climate, J M. Paillat, G Mandret
Additives As Preservatives For Wrapped Round Bales Silage Made Under Tropic Climate, J M. Paillat, G Mandret
IGC Proceedings (1977-2023)
In tropical highlands it is difficult to conserve harvested forage as silage. Tests with molasses as an additive, or using ammonium tetraformiate (ATF) or inoculants have been conducted to find out more about the fermentation process in these conditions. Sugar additives are not the primary factor in the fermentation process. Nevertheless, they are essential to make up for the small amounts of water soluble carbohydrates (WSC) in the forages, but only if the dry matter (DM) content is high enough (27% for temperate species, 40 % for the kikuyu grass). Even at high rates such as 5 l t-1 of …
Effect Of Storage On Quality Of Cowpea Haulm Hay Under Warm Humid Conditions, S O. Apori
Effect Of Storage On Quality Of Cowpea Haulm Hay Under Warm Humid Conditions, S O. Apori
IGC Proceedings (1977-2023)
The effect of four months storage on chemical composition of hay prepared from cowpea haulm was monitored in a Coastal savanna environment in Cape Coast, Ghana. The average hydrometeorological conditions during the experimental period were 27.1oC of temperature, 30.1mm of rainfall, 80.4% of relative humidity and 0.80 water activity. Parameters measured were dry matter (DM%), crude protein (CP%), metabolisable energy for ruminants [MEr, MJME/KgDM], protein to energy ratio (p/E, g/MJME), pH, and rumen degradable nitrogen (RDN,%). The CP, MEr, P/E, pH and RDN values of 13.04%, 7.17 MJME kg-1DM, 18.18g/MJME, 6.35 and 58.83% of freshly prepared hay changed to 12.05%, …
Intake, Digestion And Performance Comparisons For Cattle Fed Macerated Vs. Roller-Conditioned Alfalfa (Medicago Sativa L.) Forage, Suwarno, K M. Wittenberg, W P. Mccaughey
Intake, Digestion And Performance Comparisons For Cattle Fed Macerated Vs. Roller-Conditioned Alfalfa (Medicago Sativa L.) Forage, Suwarno, K M. Wittenberg, W P. Mccaughey
IGC Proceedings (1977-2023)
The objective of this study was to determine whether maceration of alfalfa forage at the time of harvest will have a positive impact on intake, digestibility and performance in beef cattle. A performance trial conducted with 24 growing beef calves resulted in a 7% and 10% increase (P<0.05) in dry matter intake (kg/d) and daily gain (kg), respectively, when animals were fed alfalfa silage harvested with a macerator vs. a mower conditioner. Feed efficiency was not affected by treatment. Four steers assigned to alfalfa hay harvested with a macerator vs. mower conditioner showed no differences in dry matter intake, however, dry matter digestibility for the macerated hay was higher.
Dry Matter Yield And Nutritive Value Of Coast-Cross N1 Preserved As Hay, Silage, And Haylage, J B. Andrade, E Ferrari Jr, W Lavezzo, V T. Paullino, J R. Nogueira, G Braun, F B. Castro
Dry Matter Yield And Nutritive Value Of Coast-Cross N1 Preserved As Hay, Silage, And Haylage, J B. Andrade, E Ferrari Jr, W Lavezzo, V T. Paullino, J R. Nogueira, G Braun, F B. Castro
IGC Proceedings (1977-2023)
Dry matter yield and nutritive value of coast-cross n° 1 (Cynodon dactylon (L.) Pers preserved as hay, silage and haylage were studied. The forage was harvested after 28, 35, 42 and 49 days of growth. Fertilization was completed with 400 kg/ha single superphosphate and 500 kg/ha 20-0-20 at the beginning of the experiment. The experimental design for dry matter yield (2 x 2 m plots) was a randomized block with four replications. Nutritive value was also analyzed in a randomized block design being the treatments arranged in a 3 x 4 factorial (three preservation methods and four ages). Dry …
Evolution Of The Nutritional Quality During Big Bale Ensilage Of Temperate Multispecies Pastures, L M. Gutierrez, E M. Viviani Rossi
Evolution Of The Nutritional Quality During Big Bale Ensilage Of Temperate Multispecies Pastures, L M. Gutierrez, E M. Viviani Rossi
IGC Proceedings (1977-2023)
The objective of this work was to assess the evolution of the nutritive quality of big bales composed of multispecifies pastures (Phalaris acuática, Festuca arundinacea, Lolium perenne and Medicago sativa). Ten big bales were analysed after 90 and 120 days for the following: dry matter (%DM); crude protein (CP, %DM); pH; neutral detergent fibre (NDF, %DM); digestibility in vitro of DM (IVDMD, %DM); ammonia nitrogen (NH3-N/%TN); soluble protein (SP, %NT) and non structural carbohydrates (WSC, %DM).The results were analyzed through variance of the means and significant differences (p<0.05) were found in percentages of DM (32.9% and 27.8%); CP (12.1% and 8.6%); pH (4.6 and 6.7); IVDMD (61.1% and 53.2%); N-NH3/TN (11.8% and 36.0%); SP (8.6% and 12.6%) and no differences were found in NDF (60.2% and 61.6%) and WSC (2.8% and 1.9%) (p>0.05).
Medicinal Plants As Indicators Of Grassland Biodiversity, G Nagy, I Vinczeffy, K Peto
Medicinal Plants As Indicators Of Grassland Biodiversity, G Nagy, I Vinczeffy, K Peto
IGC Proceedings (1977-2023)
A study has been made to identify the medicinal plants on the existing Hungarian grasslands. Sixty-three plants have been found to possess medicinal effects. Twenty-six, 15 and 22 species are for internal, internal or external and external use, respectively. This result reflects the low management intensity of grasslands in the country, as well as the species richness of semi-natural grasslands. It is suggested that the number of medical plants on the grassland, - in general - can also be used as an indicator of grassland biodiversity.
Mineral Contents Of White Clover Grass And Nitrogen Fertilized Grass Pastures For Lambs, R Sormunen-Cristian, P Nykänen-Kurki, J Peltola
Mineral Contents Of White Clover Grass And Nitrogen Fertilized Grass Pastures For Lambs, R Sormunen-Cristian, P Nykänen-Kurki, J Peltola
IGC Proceedings (1977-2023)
The mineral contents (Ca, P, Mg, K, Na, Fe, Cu, Zn, and Mn) of white clover grass without nitrogen and grass-only pastures with annual nitrogen rates of 0, 120 and 250 kg ha-1 were studied in 1994 and 1995. The pastures were grazed twice per season by growing lambs. The white clover contents averaged 25% and 42%, respectively. The Ca and Mg contents and the Ca/P ratio were higher, and the K/(Ca+Mg) equivalent ratio lower in white clover grass than in grass-only swards. The P content of white clover grass was similar to that of grass, and the K content …
Collection And Evaluation Of The Section Platycarpe From The Peoples Republic Of China, T A. Cambell, G Bao, Z L. Xia
Collection And Evaluation Of The Section Platycarpe From The Peoples Republic Of China, T A. Cambell, G Bao, Z L. Xia
IGC Proceedings (1977-2023)
The Peoples Republic of China is the center of origin of several species of the section Platycarpae, which could contain genes for drought and cold tolerance that would be of significant benefit to cultivated alfalfa (Medicago sativa L.) Of particular interest are Medicago archiducis-nicolai Sirjaev, M. edgeworthii Sirjaev, and M. ruthenica (L.) Ledebour. Of 105 M. ruthenica accessions collected from 15 diverse environments in Inner Mongolia, 50 were evaluated in the field at Beltsville MD (USA) in 1993 and 1994 on an acid soil (pH 6.4) deficient in boron and potassium. Significant variation was noted for stand retention, reaction to …
Assessing The Impact Of Dietary Addition Of Lignin On Growth Performance, Nitrogen Balance And Faecal Microorganisms In Grain-Fed Veal Calves, L E. Phillip, E S. Idziak
Assessing The Impact Of Dietary Addition Of Lignin On Growth Performance, Nitrogen Balance And Faecal Microorganisms In Grain-Fed Veal Calves, L E. Phillip, E S. Idziak
IGC Proceedings (1977-2023)
A study was conducted with ALCELLR - lignin (A-lignin) to evaluate its impact on performance of grain- fed veal calves. Thirty two male calves (avg. initial wt, 190 kg) were fed for 13 weeks grain corn and a protein supplement with added A-lignin to supply 0, 1.25%, 2.5% or 5.0% of diet. Eight other calves were used to study nitrogen balance, and grab samples of faeces were analyzed for anaerobic, aerobic and coliform bacteria. A-lignin at 1.25% of diet increased (p<.01) weight gain by 12%. Addition of A-lignin also decreased (p< 0.01) organic matter digestion, increased (p<.01) faecal N excretion but did not significantly alter N balance. A-lignin reduced (p< 0.01) faecal ammonia concentration but increased (p <.01) DM content of grab samples of faeces; there were no significant effects on populations of faecal microorganisms. The study revealed a beneficial effect of A-lignin on calf growth but the reason for the response was not uncovered.
Seed Proteinase Inhibitors From Annual Medics Active Against Insect Pests, M Odoardi, A Tava, F Ceciliani
Seed Proteinase Inhibitors From Annual Medics Active Against Insect Pests, M Odoardi, A Tava, F Ceciliani
IGC Proceedings (1977-2023)
Several different species of annual medics have been tested for the occurrence and concentration of trypsin inhibitors in the seed. Trypsin Inhibitory Activity (TIA) has been in fact related to the level of resistance to biotic and abiotic stresses. Wide variation was found for TIA among species, with the highest values shown by the snail medic (Medicago scutellata). After a simple and rapid procedure of chromatographic purification, the Trypsin Inhibitor (TI) from snail medic has been tested towards the trypsin-like proteinases extracted from larvae of different phytophagous insects, showing high levels of Inhibitory Activity. The complete amino acid …
The Effect On Intake Palatability And Digestibility Of Phenolic Compounds In Tagasaste (Chamaecytisus Proliferus), N J. Edwards, J C. Mailey, D M. Mcneill, J B. Lowry, C S. Mcsweeney, D A. Henry, C M. Oldham
The Effect On Intake Palatability And Digestibility Of Phenolic Compounds In Tagasaste (Chamaecytisus Proliferus), N J. Edwards, J C. Mailey, D M. Mcneill, J B. Lowry, C S. Mcsweeney, D A. Henry, C M. Oldham
IGC Proceedings (1977-2023)
The major secondary metabolites currently identified in tagasaste (Chamaecytisus proliferus) belong to the phenolic group of compounds. The principal phenolic compounds are the flavones, apigenin and luteolin, but low concentrations of condensed tannins, the isoflavonoid daidzein and the alkaloid sparteine have also been detected in some samples. No flavonols have been detected. There is a strong relationship between the concentration of phenolic compounds in tagasaste and its palatability. Furthermore, digestibility of tagasaste is relatively high throughout the year, thereby implicating intake as the major factor influencing the seasonality of liveweight performance of livestock grazing tagasaste. Despite confirmation of …
Feeding Strategies To Optimize Reproductive Performance Of Cattle Grazing High Protein Pastures In Uruguay, H R. Tosi, K M. Wittenberg
Feeding Strategies To Optimize Reproductive Performance Of Cattle Grazing High Protein Pastures In Uruguay, H R. Tosi, K M. Wittenberg
IGC Proceedings (1977-2023)
Alternative feeding strategies were investigated for Holstein heifers grazing a vegetative red, Trifolium pratense L., and white clover, Trifolium repens L., pasture. A total of 474 grazing heifers were supplemented varying amounts of corn silage, Zea mays, during the breeding season in an effort to improve reproductive performance. Animal response to supplementation, whether on spring or winter pasture, was similar. Corn silage supplemented at 18.8 or 28.8% DM basis of total diet, for winter and spring pastures, respectively, resulted in animal weight gains similar to that of heifers receiving legume pasture only. Serum urea nitrogen and reproductive performance for heifers …
Strategies For Improving Efficiency Of Beef Cattle In Tall Fescue Pasture Systems, J C. Waller, H A. Fribourg
Strategies For Improving Efficiency Of Beef Cattle In Tall Fescue Pasture Systems, J C. Waller, H A. Fribourg
IGC Proceedings (1977-2023)
A beef (Bos taurusL.) cattle producer must allocate land and forage resources to meet nutrient needs of the entire herd. Using 20 yr of calving and grazing data, templates of herd composition, associated Total Digestible Nutrients (TDN) requirements over the whole year, and forage TDN production were developed for a typical herd and land area. The monthly energy needed by the entire herd was relatively constant. Forage productivity varied monthly, indicating the need to plan for efficiently using surplus TDN from some seasons to meet needs at other times. This approach could be expanded to include more definitive …