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.
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Showing 1 to 13 of 13 for “"endogenous losses"”.
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Comparative Amino Acid Digestibilities in Growing Pigs and Sows
… sows. By correcting AIDs for the non-specific endogenous losses of amino acids estimated after feeding a nitrogen-free diet, standardized ileal amino acid digestibility coefficients (SIDs) were calculated. There were no differences (P $>$.05) between lactating sows and growing pigs in SIDs, but …
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Aspects of calcium digestibility in pigs
Two experiments were conducted to determine endogenous losses of Ca and determine the effects of phytase, phytate, source of dietary Ca, and Ca level on Ca digestibility. The first objective of Exp. 1 was to test the hypothesis that endogenous Ca is lost from the gastrointestinal tract of growing …
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Duodenal and ileal digestibility of dietary nutrients and endogenous protein losses in pre- and post-weaning young dairy calves
… of AA bioavailability. Because the synthesis of endogenous proteins is dependent on many physiological and dietary factors, flows of AA and CP at the ileum need to be determined in order to obtain accurate estimates of nutrient ileal digestibilities. Soy protein remains one of the most studied …
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Effects of microbial phytase on the standardized total tract digestibility of phosphorus in soybean meal, corn, and corn co-products
… diet was also formulated to measure the basal endogenous P losses (EPL) from pigs. Addition of phytase improved (P < 0.01) the STTD of P in SBM and corn, but did not improve the STTD of P in DDGS. Values measured for the STTD of P in Exp. 1 were used to formulate diets that were used in Exp. 2 …
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Nutritional evaluation of fermented soybean meal fed to weanling pigs
… A P-free diet that was used to estimate basal endogenous losses of P was also formulated. The ATTD and STTD of P were greater (P < 0.01) in FSBM than in SBM-CV if no phytase was used, but that was not the case if phytase was added to the diet (soybean meal × phytase interaction: P < 0.01). The …
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Digestible indispensable amino acid scores for meat products
… A N-free diet was formulated to determine basal endogenous losses of CP and AA, enabling the calculation of standardized ileal digestibility (SID) of AA. The DIAAS values were calculated using the determined concentration of digestible indispensable AA (IAA) in each meat product and 2 reference …
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Digestibility of energy and nutrients in distillers dried grains with solubles fed to growing pigs
… and an N-free diet was used to determine basal endogenous losses of CP and AA. Results indicated that the SID of AA in maize DDGS produced in Europe is greater than in European wheat DDGS and DDGS produced from mixtures of wheat and maize. The objective of the second experiment was to determine …
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Aspects of phosphorus nutrition in swine
… was a P-free diet that was used to determine endogenous P losses (EPL). Two additional diets in which DCP or DDGS was the sole source of P were also formulated. Results showed that the ATTD of P in DCP and DDGS were 86.1 and 58.8%, respectively. The EPL was determined to be 174 mg/kg DMI and …
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Amino acid digestibility and concentration of energy in processed soybean and rapeseed products fed to pigs
… A N-free diet was prepared to calculate basal endogenous losses of CP and AA and this diet was fed to 2 groups of pigs. The SID of Arg, His, Ile, Leu, Met, and Phe were greater (P < 0.05) in ESBM-1 than in SPC, and the SID of Lys was greater (P < 0.05) in SBM-CV than in ESBM-2. The SID of total …
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Digestibility and Energetic Utilization of Lipids by Pigs
… of dietary NDF on ileal and total tract endogenous losses of fat (ELF), on true ileal (TID) and true total tract digestibility (TTTD) of fat by growing pigs were determined. Results showed the estimates of ELF were lower (P < 0.05) for liquid fat than for intact fat at the end of the …
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The nutritional value of hybrid rye fed to growing pigs
… and a N-free diet was used to determine basal endogenous losses of CP and AA. Wheat and barley contained more CP and indispensable AA than hybrid rye, but hybrid rye contained more indispensable AA compared with corn. The SID of CP and most indispensable AA was greater (P < 0.05) in barley, …
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Fermentation and energetic value of fiber in feed ingredients and diets fed to pigs
… characteristics of the diet. Correcting for endogenous losses does not increase additivity of digestibility values for dietary fiber in mixed diets. Dietary pentoses are mostly absorbed prior to the end of the small intestine of pigs and may reduce energy utilization, but they do not affect …
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Digestible indispensable amino acid scores for food proteins
… A N-free diet was formulated to determine basal endogenous losses of amino acids and crude protein (CP) and to enable the calculation of standardized ileal digestibility (SID) of amino acids. The remaining diets were formulated with each test ingredient as the sole source of amino acids. Using …