Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 18 of 18 for “"P Digestibility"”.
-
Nutritional evaluation of conventional, high protein, reduced fiber, and reduced phosphorus corn co-products for poultry
… to measure TMEn and standardized amino acid (AA) digestibility. Corn fermented protein contained an average of 56% CP (DM basis), which was higher than 32% CP for conventional DDGS. The CFP also contained a higher (P < 0.05) TMEn of 3,556 kcal/kg DM compared with 2,767 kcal/kg for conventional …
-
Phosphorus bioavailability and digestibility in soybean meal, spray dried plasma protein and meat and bone meal determined by different methods in poultry
Six experiments were conducted to determine P digestibility or bioavailability for soybean meal (SBM), spray dried plasma protein (SDPP), and meat and bone meal (MBM) using different types of assays in poultry. Experiment 1 evaluated the precision-fed rooster assay and determined the effects of …
-
Effect of particle size on nutritional value of soybean meal for poultry
… retention (TMEn) and standardized amino acid digestibility in seven SBM samples that had a mean particle size of < 386, 466, 809, 1,174, 1,577, 2,026, or 2,321 μm. The TMEn of the SBMs were determined using conventional roosters while the standardized amino acid digestibility was determined …
-
Effects of diet on phosphorus digestion in dairy cattle
… fecal TP excretion, and total tract IPs-P digestibility (72.4 vs. 61.4%). Fecal IPs-P excretion tended to decrease as increasing forage content. Duodenal IPs-P and TP flow and apparent TP digestibility were unaffected by forage content. Increasing dietary NFC content increased IPs-P and TP …
-
Phosphorus bioavailability and digestibility in canola meals determined by different methods
… which evaluated the effect of phytase on P digestibility and (ileal) retention (excreta) values for CCM based on ileal and excreta contents, respectively. The chicks were fed a P - deficient cornstarch - dextrose CM basal diet (.13% available P) as Diet 1. Diets 2 and 3 were the basal diet …
-
Evaluation of the nutritional values of seven insect meals for inclusion in poultry diets
… composition, metabolizable energy content, P digestibility/bioavailability, and amino acid digestibility of different insect meals. The first six experiments were precision-fed rooster assays to determine TMEn in conventional roosters or amino acid digestibility in cecectomized roosters. The …
-
Efficacy and safety of a new genetically modified phytase for improving dietary phosphorus utilization of swine and poultry
… were collected for determination of Ca and P digestibility. At the end of all experiments animals were slaughtered, and 10th ribs or right foot for pigs, and both middle toes for turkeys were removed for bone analysis. In pigs performance, bone measurements, and digestibilities of P and Ca …
-
Effects of Calcium and Enzyme Supplementation on the Occurrence of Necrotic Enteritis
… intestinal morphology and pH, nutrient digestibility and bone mineralization during necrotic enteritis (NE). In each experiment, Cobb 500 broilers were obtained from a commercial hatchery and housed in floor pens at the Virginia Tech Turkey Research Center. Birds were placed on used …
-
Quantifying the Effects of Microbial Phytase and Diet Acidity on Ca and P Utilization by Weanling Pigs
… on performance, rib mineralization and P and Ca digestibility estimates, and to investigate the possible interactions of phytase and citric acid (Exp. 4 and 5). In Exp. 1, adding phytase to low P diets linearly increased ADG (P < .001), rib shear force (P < .01), shear energy (P < .02), ash …
-
The nutritional value of flaxseed meal for swine
… (5.3% of CP for pigs 20-50 kg). The apparent digestibility of DM, nitrogen, ash, EE and GE as well as determination of the DE and NE content of FSM was determined for both growing pigs (32 pigs, initial weight 70 ± 3 kg) and gestating sows (26 pigs, parities 2 – 4). Animals were fed …
-
The Interactive Effects of Phosporus and Calcium on Phosphorus Requirement, Utilization, and Phytase Efficacy in Poultry
… effects of P and Ca on P requirement, digestibility, utilization, and phytase efficacy. Each treatment had a minimum of 6 replications. One experiment with 3 trials was conducted to identify the nonphytate P (nPP) requirement of 0 to 14 d old broilers. The nPP levels fed ranged from …
-
Phosphorus Utilization in Lactating Dairy Cows Fed Increasing Amounts of Dried Distillers Grains with Solubles
… with SB diets, 28.9 and 25.8 g/d. Apparent P digestibility was similar to all diets, averaging 52.9%. Dietary P concentration and P source did not affect the water soluble P in feces. Data from this experiment suggest that DDG can be an effective source of P to sufficiently meet high producing …
-
The relationship between protein and phosphorus digestion and retention in growing pigs and broiler chickens
… chickens. The methodology of determining the digestibility of AA and P and the effect of dietary N and P on the digestion and retention of these two nutrients were investigated.</p> <p>An experiment was conducted in growing pigs to investigate the additivity of AID or SID of CP and AA in mixed …
-
Use of feed technology to improve the nutritional value of feed ingredients and diets fed to pigs
… objective of Exp. 1 and 2 was to determine the digestibility of CP, AA, and P, and the concentration of DE and ME, in corn ground to different particle sizes (i.e., 865, 677, 485, and 339 µm). Results of Exp. 1 and 2 indicated that the concentration of DE and ME increased (P < 0.05) linearly as …
-
Novel soybean products fed to weanling pigs
… to determine the impact of heat treatment on AA digestibility with an emphasis on the effect that trypsin inhibitors have on protein digestion. The apparent (AID) and standardized (SID) ileal digestibility were determined using low temperature and high temperature-processed full-fat soybeans …
-
Effects of dietary Ca concentration on the performance of broiler chicks fed various sources of dietary P with and without phytase supplementation
… was bird performance, tibia ash, Ca and P digestibility and duodenal P transporter mRNA abundance. Newly hatched broiler chicks were housed in raised-wire starter batteries (65.8 in2) for 16 d. Each experiment had 12 treatments were replicated 6 times using 8 chicks per cage that resulted …
-
Application of microbial phytase and its influencing factors in vivo and in vitro
… was effective in improving performance, P and Ca digestibility, bone mineralization, and in decreasing fecal P excretion by enhancing hydrolysis of phytate P for young pigs, broilers and turkey poults fed a corn-soybean meal diet. Maximum responses were achieved at supplemental phytase levels of …
-
The interaction of dietary phosphorus and exogenous phytase concentrations on nutrient metabolism of beef cattle
… and dietary P concentration on metabolism and digestibility of beef cattle fed starch-based diets. Six ruminally-fistulated steers (initial BW = 750 ± 61 kg) were fed in a 6 × 6 Latin square design with a 3 × 2 factorial arrangement of treatments: 1) 0 FTU phytase, 0.10% dietary P, 2) 500 FTU …