Matches in SemOpenAlex for { <https://semopenalex.org/work/W8836807> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W8836807 abstract "The effect of high ambient temperature (35 vs 21°C) and acclimation during 5 and 6week of age on the bioavailability of protein and amino acids was investigated inbroilers. Two experiments were conducted to achieve the above objectives. In bothexperiments, equal numbers of chickens (90 birds: 45 Male, 45 Female) wereassigned to three groups namely 2 weeks heat stress (heat acclimated), I week heatstress (non-heat acclimated) and no-heat stress. During the 28-35 days, the 2 weeksheat stress group was challenged to heat stress for 180-min every day. During the35-43 days, the 1 week heat stress group was challenged to heat stress as well. Theno-heat stress group was kept in standard temperature (21 °C) as control. Basal dietwhich contained soybean meal as a sole source of protein was fed to all birds duringday 39-41 as adaptation period. Following this, the birds undergone 24 h fasting.Assay diet was then fed to all birds for one hour before starting the heat challenge.For Experiment I, Assay diet was the same with basal diet without methioninesuplimentation and for Experiment 2, it was a nitrogen free diet. Feed conversionratio (FCR) and deep body temperature (Tb) were measured and distal ileum contents were collected from birds killed by intravenous injection of sodiumpentobarbitone through wing vain, immediately after heat challenge. The assay dietfor second experiment was a nitrogen-free diet to investigate the endogenous proteinand amino acid (AA) output. FCR increased by heat stress (P < 0.05). Heatacclimation resulted in 20% improvement in FCR in 2wk heat stressed birds ascompare with non-heat acclimated birds (1 wk heat stress) at 3 5-43 days. Tb of bothheat stressed groups increased throughout the heat stress period. 2wk heat stressedbirds had significantly lower Tb than l wk heat stressed birds in day 35 and 37 (P <0.05), but there was no difference at day 39 (P > 0.05). Crude protein and totalamino acids apparent and true digestibility was significantly depressed by heat stress(P < 0.05) and this reduction failed to be improved by heat acclimation. Moreover,the reduction was found in all amino acid except for glutamic acid, aspartic acid,methionine, tryptophan, serine, alanine and proline. Acclimation and sex had noeffect on total AA availability. Also there was no interaction between sex and heatchallenge duration (P > 0.05). The mean AA availability of soybean meal observedin the present study was 82% in no-heat stress group and 78% in heat stressed birds.The relatively low values of AA availability in this study may be attributed to thesoybean meal quality which was suspected to be underprocessed. One of the strikingfindings of this study was the low availability value for tyrosine under heat stresscondition (11.9% less than no heat stress) which was the lowest among other AA.Analysis of endogenous excretion from the second experiment revealed thatglutamic acid, aspartic acid, serine, threonine, leucine and arginine were thepredominant endogenous amino acids present in ileal output. In addition, the lowestileal endogenous AA losses were tryptophan, methionine and cystine." @default.
- W8836807 created "2016-06-24" @default.
- W8836807 creator A5069925747 @default.
- W8836807 date "2006-08-01" @default.
- W8836807 modified "2023-09-23" @default.
- W8836807 title "Bioavailability of Amino Acids of Soybean Meal in Broilers Subjected to Heat Stress" @default.
- W8836807 hasPublicationYear "2006" @default.
- W8836807 type Work @default.
- W8836807 sameAs 8836807 @default.
- W8836807 citedByCount "0" @default.
- W8836807 crossrefType "dissertation" @default.
- W8836807 hasAuthorship W8836807A5069925747 @default.
- W8836807 hasConcept C119406331 @default.
- W8836807 hasConcept C140793950 @default.
- W8836807 hasConcept C178790620 @default.
- W8836807 hasConcept C181389837 @default.
- W8836807 hasConcept C185592680 @default.
- W8836807 hasConcept C206139338 @default.
- W8836807 hasConcept C2776371603 @default.
- W8836807 hasConcept C2778345441 @default.
- W8836807 hasConcept C2780912031 @default.
- W8836807 hasConcept C2987418964 @default.
- W8836807 hasConcept C31903555 @default.
- W8836807 hasConcept C515207424 @default.
- W8836807 hasConcept C55493867 @default.
- W8836807 hasConcept C59822182 @default.
- W8836807 hasConcept C60644358 @default.
- W8836807 hasConcept C86803240 @default.
- W8836807 hasConceptScore W8836807C119406331 @default.
- W8836807 hasConceptScore W8836807C140793950 @default.
- W8836807 hasConceptScore W8836807C178790620 @default.
- W8836807 hasConceptScore W8836807C181389837 @default.
- W8836807 hasConceptScore W8836807C185592680 @default.
- W8836807 hasConceptScore W8836807C206139338 @default.
- W8836807 hasConceptScore W8836807C2776371603 @default.
- W8836807 hasConceptScore W8836807C2778345441 @default.
- W8836807 hasConceptScore W8836807C2780912031 @default.
- W8836807 hasConceptScore W8836807C2987418964 @default.
- W8836807 hasConceptScore W8836807C31903555 @default.
- W8836807 hasConceptScore W8836807C515207424 @default.
- W8836807 hasConceptScore W8836807C55493867 @default.
- W8836807 hasConceptScore W8836807C59822182 @default.
- W8836807 hasConceptScore W8836807C60644358 @default.
- W8836807 hasConceptScore W8836807C86803240 @default.
- W8836807 hasLocation W88368071 @default.
- W8836807 hasOpenAccess W8836807 @default.
- W8836807 hasPrimaryLocation W88368071 @default.
- W8836807 hasRelatedWork W1518404449 @default.
- W8836807 hasRelatedWork W1991339360 @default.
- W8836807 hasRelatedWork W2018709548 @default.
- W8836807 hasRelatedWork W2044158756 @default.
- W8836807 hasRelatedWork W2055268289 @default.
- W8836807 hasRelatedWork W2118715346 @default.
- W8836807 hasRelatedWork W2136003043 @default.
- W8836807 hasRelatedWork W2157898327 @default.
- W8836807 hasRelatedWork W2260599220 @default.
- W8836807 hasRelatedWork W2268182716 @default.
- W8836807 hasRelatedWork W2278025750 @default.
- W8836807 hasRelatedWork W2292172795 @default.
- W8836807 hasRelatedWork W2315732072 @default.
- W8836807 hasRelatedWork W2319353311 @default.
- W8836807 hasRelatedWork W2513824607 @default.
- W8836807 hasRelatedWork W2546471396 @default.
- W8836807 hasRelatedWork W2599884205 @default.
- W8836807 hasRelatedWork W2615896239 @default.
- W8836807 hasRelatedWork W3048718856 @default.
- W8836807 hasRelatedWork W3197903694 @default.
- W8836807 isParatext "false" @default.
- W8836807 isRetracted "false" @default.
- W8836807 magId "8836807" @default.
- W8836807 workType "dissertation" @default.