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 20 of 29 for “"intestinal morphology"”.
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Delayed access to feed affects broiler small intestinal morphology and intestinal cell ontogeny
… to feed (DAF) has been found to inhibit small intestinal development, compromising growth of the chick. To further understand the impact of DAF on small intestines at the molecular level, many developmental genes that regulate intestinal development were investigated. The objective of this …
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Impact of Dietary Proteins on Growth Performance, Intestinal Morphology, and mRNA Abundance in Weanling Pigs
… blot results revealed significant diet by intestinal segment interactions (P < 0.05) for aminopeptidase A and aminopeptidase N. Aminopeptidase A was evenly distributed along the small intestine in the Peptiva® group, but decreased dramatically in the ileum in other groups. Aminopeptidase N …
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The effect of high-fiber diets on nutrient utilization and intestinal morphology of growing pigs
… effects of dietary fiber on mineral balance and intestinal.morphology of growing pigs. Fiber sources were added to corn-soybean meal diets at levels which increased neutral-detergent fiber levels by 6 to 8%. In experiment 1, 10% oat hulls (OH) decreased Ca (P<.06) and Zn (P<.01) balances of pigs …
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Effects of amylase supplementation upon the growth, endogenous amylase activity, and intestinal morphology of male turkey poults
… for amylase supplemented birds when compared to intestinal villi of either the control or xylanase fed poults. The fourth experiment was conducted to compare the effect on growth and feed utilization of the serial addition of various enzyme preparations to corn-soybean poult diets. In retrospect, …
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The effects of yeast derivatives and adult cecal droppings on growth parameters and intestinal morphology in commercial broilers
… or in combination effected performance or gut morphology of broilers during a mild coccidia challenge. Day-old Cobb 500 chicks were placed in floor pens on litter seeded with coccidia and fed diets with or without yeast products. The objectives of the second and third studies were to 1) …
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Orally Administered IGF -I Combined With Partial Enteral Nutrition Alters Intestinal Morphology and Disaccharidase Activity During Parenteral Nutrition in Neonatal Piglets
Our final study investigated the mechanism(s) by which IGF-I up-regulates LPH activity. The three treatment groups were: 100% TPN, 20% PEN with or without 1.0 mg/kg IGF-I. IGF-I increased LPH activity and LPH activity per unit mature LPH ∼2-fold over PEN alone, but did not affect LPH mRNA or …
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Effects of dietary enzyme supplementation on performance, bone ash, small intestinal morphology, and apparent ileal amino acid digestibility of broilers exposed to a live coccidia oocyst vaccine
… reduced (P ≤ 0.05) IAAD in EXP 3. Small intestinal morphology and goblet cell numbers were affected by enzyme supplementation and vaccination, which resulted in significant (P ≤ 0.05) interactions. In general, vaccination increased (P ≤ 0.05) small intestinal crypt depth and reduced (P ≤ …
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Route of Nutrient Administration Alters Intestinal Immune Cell Composition in Neonatal Piglets
… requirements and developmentally immature gastrointestinal function and are supported totally or partially on parenteral nutrition for several days to weeks postpartum. The use of total parenteral nutrition (TPN) is frequently associated with a myriad of complications, primarily due to the lack …
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Efficacy of exogenous phytase and protease enzymes on performance and gastrointestinal health in broiler chickens
… with AGP, zinc bacitracin on performance and intestinal morphology in broilers was tested. Broilers were fed a diet containing nutrients at recommended levels (positive control, PC) with no enzyme supplementation or a diet with lower nutrient density than PC, either without enzyme …
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Effect of probiotics or high incubation temperature on gene expression and cell organization of the small intestine and yolk sac of chicks
… and gut health including promotion of intestinal morphology. However, there are few studies that show the effect of probiotics on ontogeny of intestinal epithelial cells and antimicrobial peptides, or intestinal integrity in young healthy chicks. Heat stress during incubation was shown …
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Effect of chia (Salvia hispanica l.) on the bioavailability of minerals, lipid profile, inflammation, oxidative stress, and intestinal health
… of prebiotics extracted from chia on the morphology and functionality intestinal, on intestinal microbiota and on iron and zinc status are not known. In this sense, the objective of the study was to evaluate the effect of chia (Salvia hispanica L.) flour consumption on the bioavailability …
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Resposta de pintainhos de corte desafiados com salmonella enteritidis e alimentados com dois níveis de treonina
… the effect of two levels of threonine on the intestinal morphology, microbiology and cutting performance of chicks challenged with Salmonella Enteritidis. A total of 240 fertile eggs from Cobb 500. The eggs were weighed and randomly distributed into three artificial incubators with automatic …
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Effect of cereal type and commensal bacteria on availability of methionine sources and intestinal physiology in pigs
… to determine the contribution of the gastrointestinal microbiota to variation in bioefficacy of methionine sources and the interrelationship between intestinal microbiota and cereal grain type with respect to gastrointestinal physiology. Apparent gastrointestinal absorption of DL-methionine …
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The impact of whey protein isolate on energy balance regulation
… with an increased fat accumulation. WPI reduced intestinal weight and length, suggesting a potential functional relationship between WPI, gastro-intestinal morphology and insulin related signalling in the adipose. Extending the study to 15 weeks, did not affect adipose fat weight, but decreased …
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Thyroid in intestinal development during atlantic salmon smoltification
… present PhD thesis gives a novel insight into intestinal morphology, intestinal SW acquisition, and involvement of TH in intestinal development during the freshwater (FW) and the development of competence for the SW phase. Here we used a winter signal (Photoperiod manipulation) and functional …
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Assessment of a Nutritional Rehabilitation Model in Two Modern Broilers and Their Jungle Fowl Ancestor: A Model for Better Understanding Childhood Undernutrition
… villous atrophy, dysbiosis, and increased intestinal permeability. Inclusion of rye in poultry diets induces nutrient deficiencies and increases intestinal permeability, dysbiosis and decreases growth rates. The objective of this dissertation was to determine if chickens consuming a rye …
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Effects of Incubation Temperature and Transportation Stress on Yolk Utilization, Small Intestine Development, and Post-Hatch Performance of High-Yield Broiler Chicks
… transportation may have an effect on the gastrointestinal development of the broiler chick. The objective of the first study was to investigate the effects of elevated embryonic incubation temperature (IT) on post-hatch relative nutrient transporter gene expression, integrity of the intestinal …
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Follow your gut: Does AKR1D1 impact gastrointestinal health?
… species in the intestine, disrupt cytoprotective intestinal bile acid signalling and drive gut dysbiosis, impairing intestinal barrier function and inducing hepatic inflammation. We have previously shown that expression of the bile acid synthesis enzyme 5β-reductase (AKR1D1) is decreased in …
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Effects of high incubation temperature on the developing small intestine and yolk sac of broiler chicks with insight into goblet cell development in the small intestine early posthatch
… There was no difference in the expression of the intestinal stem cell marker olfactomedin 4 (Olfm4) and mucin 2, which is secreted by goblet cells and forms mucus. In the yolk sac, heat shock proteins (HSP) 70 and 90 were elevated at embryonic day 15, and HSP90 still remained elevated at embryonic …
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INVESTIGATION OF ACUTE STRESS IMPACT ON NURSERY PIG GASTROINTESTINAL FUNCTION AND ABILITY OF BIOACTIVE COMPONENTS OF GARLIC TO MITIGATE STRESS-INDUCED PHYSIOLOGICAL CHANGES
… on nursery pig growth performance, gastrointestinal function, and ability of garlic-derived diallyl disulfide (DADS) and diallyl trisulfide (DATS) to mitigate deprivation-induced effects. For the first experiment, the effects of a 24-h post-weaning feed, water, or feed + water deprivation …
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