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Factors affecting mineral availability from ingredients of animal origin with the chickBulbul, Syed M. January 1980 (has links)
Chicks were utilized in a study to estimate mineral (Ca, P, Mg, Mn, Cu and Zn) availability of 10 meat meal samples processed in 10 consecutive days. A balance procedure was used to determine availability in which a correction for endogenous mineral was utilized.
Results of this study indicate that calcium and phosphorus are highly available from meat meals with values of 90% and 93.4% respectively. Magnesium, manganese, zinc and copper are also well utilized with an average of 83.9%, 73.1%, 79.4% and 74%, respectively. Variations in availability of minerals particularly phosphorus, copper and zinc were observed among meat meal samples tested. This indicates that raw material used in day to day manufacturing of the meals are different; also, phosphorus might exist in different forms from one meal to another. Availability values observed in this study indicate that meat meal is an excellent source of available minerals.
The important mineral (Ca, P, Mg, Mn, Cu and Zn) content was determined in blood meal, feather meal, fish meal and meat meal. These availability studies utilized the broiler chick (three weeks of age) in a mineral balance procedure. Results of mineral content showed a wide range in Ca (2.1-84.0 mg/g), P (1.9-54.0 mg/g), Mg (12.5-68.0 mg/kg), Cu (8.3-22.4 mg/kg) and Zn (22.7-1 50 mg/kg). The range in concentration of Mg among samples was narrow (1.3-2.7 mg/g). Blood meal was the lowest in all minerals except Cu. Fish meal #1 and fish meal #2 or meat meal were the highest in these minerals. Significant variation was observed in availability of each mineral among animal protein concentrates tested.
Average availability of Ca, P, Mg, Mn, Cu and Zn was 88.3, 87.6, 80.8, 71.7, 73.2 and 76.8, respectively.
Studies were conducted with broiler chicks to compare the availability of phosphorus from feather meal, blood meal, meat meal and fish meal using different assay techniques. A standard curve was drawn by plotting the growth rate and percentage of tibia ash obtained at various levels of added dicalcium phosphate (Reference diet). The biological availability of phosphorus for animal protein concentrates was calculated from the standard graph. When body weight was used as a criteria the comparative availability of phosphorus from feather meal, blood meal, meat meal (L), meat meal (H) and fish meal was found to be 91%, 112%, 118%, 123% and 125%, respectively. The comparative availability of phosphorus from feather meal, blood meal, meat meal (L), meat meal (H) and fish meal when percentage of tibia ash was used as a criteria was found to be 84%, 98%, 112%, 121%, 121%, respectively. The percentage of tibia ash obtained with test phosphate was divided by the percentage of tibia ash obtained with standard phosphate. When this method was used to calculate the comparative availability of phosphorus from feather meal, blood meal, meat meal (L), meat meal (H) and fish meal, the calculated values were found to be 85%, 90.5%, 94.7%, 97.3% and 97.3%, respectively. The availability of phosphorus from feather meal, blood meal, meat meal (L), meat meal (H) and fish meal was calculated using mineral balance procedure and was found to be 72.5%, 88%, 92%, 95%, 95.3%, respectively. This study indicates that variation in the procedure used to determine phosphorus availability from animal protein sources may influence data. / Land and Food Systems, Faculty of / Graduate
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Nutrient availability of wheat feed screenings in broiler dietWolde-Tsadick, Maheteme Selassie January 1982 (has links)
Content and availability of nutrients in ten wheat feed screening samples were determined using day old broiler chicks.
The metabolizable energy (ME) value of wheat feed screenings (WFS)in a balanced diet was significantly (P > 0.05) higher than wheat which was used as a control diet. Growth performance of all WFS samples were higher than control diet. Diets one, two, four, seven, ten and eleven had feed efficiency ratipswhich were significantly (P > 0.05) higher than the control diet.
The total average availability of sixteen amino acids in these feedstuffs ranged from 66% (control) to 84% (diet three). Among limiting essential amino acids, lysine was significantly (P > 0.05) higher (83%) in availability followed by threonine (67%) and methionine (64%).
The average availability of the studied chemical elements (Ca, P, Mg, Mn, Cu, Zn) ranged from 59% (Zn) to 84% (Cu). Among the chemical nutrients tested, copper (84.28%) was the highest to be followed by manganese (76.57%) and phosphorus (74.14%) and the least was zinc (59%) in availability value.
The results of these studies indicated that WFS has an acceptable potential to replace wheat with reasonable margin of profit to the producer. / Land and Food Systems, Faculty of / Graduate
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Evaluation of kale as a feedstuff for ruminants.Pelletier, Ghislain Gérald January 1972 (has links)
No description available.
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Studies on the utilization of some B-vitamins in chick diets supplemented with fermentation residues.Karunajeewa, Hector. January 1966 (has links)
No description available.
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Proportional growth and carcass quality in swine.Linton, John Herbert. January 1971 (has links)
No description available.
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Effect of different levels of dietary riboflavin, niacin, and pantothenic acid upon their content in whole eggs.Martin, Jacques J. January 1972 (has links)
No description available.
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Weaning of male holstein calves after feeding milk replacer for 3 or 5 weeks with different types of commercial grain mixtures.Stephens, Christian A. January 1975 (has links)
No description available.
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Effects of protein and energy supplements on the growth of dairy bulls and steers fed a corn silage ration.Ositelu, Gabriel Segun. January 1971 (has links)
No description available.
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The effect of varying energy levels in a complete blended rations on the performance of dry and lactating dairy cows.Kettleson, Ken C. A. January 1977 (has links)
No description available.
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Comparison of post-prandial plasma-free amino acid concentrations with growth and nitrogen retention forevaluating the protein quality of swine diets.Sparling, Robert J. January 1967 (has links)
No description available.
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