10 results on '"James Eugene Pettigrew"'
Search Results
2. Soy Lecithin Supplementation Promotes Growth and Increases Lipid Digestibility in GIFT Nile Tilapia Raised at Suboptimal Temperature
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Rosana Oliveira Batista, Bianca Leticia Richter, Jorge Filipe Banze, Delano Dias Schleder, Maria Salhi, Renata Oselame Nobrega, Maria Fernanda Oliveira da Silva, Bruna Mattioni, James Eugene Pettigrew, and Débora Machado Fracalossi
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Oreochromis niloticus ,nutrition ,suboptimal temperature ,phospholipids ,soy lecithin ,Biology (General) ,QH301-705.5 ,Genetics ,QH426-470 - Abstract
Soy lecithin (SL) is a source of phospholipids, which play a crucial role in determining cell membrane structure, fluidity, and functionality. This study investigated the effects of dietary SL on the performance, nutrient digestibility, and body composition of Nile tilapia juveniles (average initial weight 12.2 g) raised at 22 °C. The experimental diets contained increasing levels of SL (0.0, 21.0, 43.0, and 64.0 g kg−1). The best weight gain and feed efficiency occurred with 42.2 and 49.8 g kg−1 of SL inclusion, respectively, estimated through quadratic regression after 90 days of feeding. The body composition of the fish was also affected by feeding with SL, with a decrease in total body lipids and viscerosomatic and hepatosomatic indices but an increase in polyunsaturated fatty acids. A digestibility trial using only two diets (0SLD and 43SLD) revealed increased lipid and fatty acids digestibility in fish fed with 43SLD. In addition, the consumption of digestible nutrients was the highest in fish fed the diet 43SL. Therefore, SL supplementation is beneficial in fall/spring diets for Nile tilapia juveniles as it can improve growth, lipid digestibility, and body composition when supplemented within the range of 42 to 50 g kg−1 diet.
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- 2023
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- View/download PDF
3. In-feed organic and inorganic manganese supplementation on broiler performance and physiological responses
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Bruno Reis de Carvalho, Hélvio da Cruz Ferreira, Gabriel da Silva Viana, Warley Junior Alves, Jorge Cunha Lima Muniz, Horácio Santiago Rostagno, James Eugene Pettigrew, and Melissa Izabel Hannas
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mineral excretion ,organic trace minerals ,poultry nutrition ,tibia mineralization ,Zoology ,QL1-991 - Abstract
Objective A trial was conducted to investigate the effects of supplemental levels of Mn provided by organic and inorganic trace mineral supplements on growth, tissue mineralization, mineral balance, and antioxidant status of growing broiler chicks. Methods A total of 500 male chicks (8-d-old) were used in 10-day feeding trial, with 10 treatments and 10 replicates of 5 chicks per treatment. A 2×5 factorial design was used where supplemental Mn levels (0, 25, 50, 75, and 100 mg Mn/kg diet) were provided as MnSO4·H2O or MnPro. When Mn was supplied as MnPro, supplements of zinc, copper, iron, and selenium were supplied as organic minerals, whereas in MnSO4·H2O supplemented diets, inorganic salts were used as sources of other trace minerals. Performance data were fitted to a linear-broken line regression model to estimate the optimal supplemental Mn levels. Results Manganese supplementation improved body weight, average daily gain (ADG) and feed conversion ratio (FCR) compared with chicks fed diets not supplemented with Mn. Manganese in liver, breast muscle, and tibia were greatest at 50, 75, and 100 mg supplemental Mn/kg diet, respectively. Higher activities of glutathione peroxidase and superoxide dismutase (total-SOD) were found in both liver and breast muscle of chicks fed diets supplemented with inorganic minerals. In chicks fed MnSO4·H2O, ADG, FCR, Mn balance, and concentration in liver were optimized at 59.8, 74.3, 20.6, and 43.1 mg supplemental Mn/kg diet, respectively. In MnPro fed chicks, ADG, FCR, Mn balance, and concentration in liver and breast were optimized at 20.6, 38.0, 16.6, 33.5, and 62.3 mg supplemental Mn/kg, respectively. Conclusion Lower levels of organic Mn were required by growing chicks for performance optimization compared to inorganic Mn. Based on the FCR, the ideal supplemental levels of organic and inorganic Mn in chick feeds were 38.0 and 74.3 mg Mn/kg diet, respectively.
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- 2021
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- View/download PDF
4. Selenium source and level on performance, selenium retention and biochemical responses of young broiler chicks
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Pedro Righetti Arnaut, Gabriel da Silva Viana, Lucimauro da Fonseca, Warley Junior Alves, Jorge Cunha Lima Muniz, James Eugene Pettigrew, Fabyano Fonseca e Silva, Horácio Santiago Rostagno, and Melissa Izabel Hannas
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Glutathione peroxidase ,Organic trace minerals ,Selenium balance ,Selenium yeast ,Tissue mineralization ,Veterinary medicine ,SF600-1100 - Abstract
Abstract Background Selenium (Se) has been recognized as an essential micronutrient for nearly all forms of life. In recent decades, broiler responses to dietary Se supplemental levels and sources have received considerable attention. On environmental grounds, organic trace mineral utilization in practical broiler feeds has been defended due to its higher bioavailability. In such feeds, trace minerals are provided simultaneously in the same supplement as inorganic salts or organic chelates, a fact commonly ignored in assays conducted to validate organic trace mineral sources. The current assay aimed to investigate growth and biochemical responses, as well as Se retention of growing chicks fed diets supplemented with organic and inorganic Se levels and where the trace minerals (zinc, copper, manganese, and iron) were provided as organic chelates or inorganic salts according to Se source assessed. In so doing, a 2 × 5 factorial arrangement was used to investigate the effects of sodium selenite (SS) and selenium-yeast (SY) supplemented in feeds to provide the levels of 0, 0.08, 0.16, 0.24, and 0.32 mg Se/kg. Results Chicks fed selenium-yeast diets had body weight (BW), and average daily gain (ADG) maximized at 0.133 and 0.130 mg Se/kg, respectively. Both Se sources linearly increased (P
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- 2021
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5. Aurantiochytrium sp. Meal Improved Body Fatty Acid Profile and Morphophysiology in Nile Tilapia Reared at Low Temperature
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Rosana Oliveira Batista, Renata Oselame Nobrega, Delano Dias Schleder, James Eugene Pettigrew, and Débora Machado Fracalossi
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Aurantiochytrium sp. ,docosahexaenoic acid ,histology ,Oreochromis niloticus ,physiology ,temperature ,Biology (General) ,QH301-705.5 ,Genetics ,QH426-470 - Abstract
Aurantiochytrium sp. is a heterotrophic microorganism that produces docosahexaenoic acid (DHA), thus being considered as a possible replacement for fish oil in aquafeeds. We investigated the effect of Aurantiochytrium sp. meal (AM) dietary levels (0, 5, 10, 20, and 40 g kg−1) on Nile tilapia body and hepatopancreas fatty acid (FA) profile, body FA retention, somatic indices, and morphophysiological changes in the intestine and hepatopancreas, after feeding Nile tilapia juveniles (average initial weight 8.47 g) for 87 days at 22 °C. The 10AM diet was compared to a control diet containing cod liver oil (CLO), since their DHA concentration was similar. Within fish fed diets containing increasing levels of AM, there was a linear increase in n-3 FA content, especially DHA, which varied in the body (0.02 to 0.41 g 100 g−1) and hepatopancreas (0.15 to 1.05 g 100 g−1). The morphology of the intestines and hepatopancreas was positively affected in AM-fed fish. Fish fed 10AM showed less accumulation of n-3 FAs in the body and hepatopancreas when compared to fish fed CLO. Therefore, AM is an adequate substitute for fish oil in winter diets for Nile tilapia, with the supplementation of 40AM promoting the best results regarding intestine and hepatopancreas morphophysiology.
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- 2021
- Full Text
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6. Feeding amylolytic and proteolytic exogenous enzymes: Effects on nutrient digestibility, ruminal fermentation, and performance in dairy cows
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Milena Bugoni, Caio S. Takiya, Nathalia T.S. Grigoletto, Paulo Cesar Vittorazzi Júnior, Alanne T. Nunes, Rodrigo G. Chesini, Guilherme G. da Silva, Thomer Durman, James Eugene Pettigrew, and Francisco P. Rennó
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Genetics ,Animal Science and Zoology ,Food Science - Published
- 2023
7. In-feed organic and inorganic manganese supplementation on broiler performance and physiological responses
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Melissa Izabel Hannas, Helvio da Cruz Ferreira Júnior, Horacio Santiago Rostagno, Bruno Reis de Carvalho, James Eugene Pettigrew, Gabriel da Silva Viana, Jorge Cunha Lima Muniz, and Warley Junior Alves
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Tibia Mineralization ,Antioxidant ,Physiology ,medicine.medical_treatment ,chemistry.chemical_element ,Feed conversion ratio ,Mineralization (biology) ,Article ,Poultry Nutrition ,Animal science ,Genetics ,medicine ,Organic Trace Minerals ,chemistry.chemical_classification ,General Veterinary ,Glutathione peroxidase ,Broiler ,Factorial experiment ,Nonruminant Nutrition and Feed Processing ,chemistry ,QL1-991 ,Mineral Excretion ,Animal Science and Zoology ,Mineral balance ,Zoology ,Selenium ,Food Science - Abstract
Objective A trial was conducted to investigate the effects of supplemental levels of Mn provided by organic and inorganic trace mineral supplements on growth, tissue mineralization, mineral balance, and antioxidant status of growing broiler chicks. Methods In total, 500 8-d-old male chicks were used in 10-day feeding trial, with 10 treatments and 10 replicates of 5 chicks per treatment. A 2 x 5 factorial design was used where supplemental Mn levels (0, 25, 50, 75, and 100 mg Mn/kg diet) were provided as MnSO4.H2O or MnPro. When Mn was supplied as MnPro, supplements of zinc, copper, iron, and selenium were supplied as organic minerals, whereas in MnSO4.H2O supplemented diets, inorganic salts were used as sources of other trace minerals. Performance data were fitted to a linear-broken line regression model to estimate the optimal supplemental Mn levels. Results Manganese supplementation improved body weight (BW), average daily gain (ADG) and feed conversion ratio (FCR) compared with chicks fed diets not supplemented with Mn. Manganese in liver, breast muscle, and tibia were greatest at 50, 75, and 100 mg supplemental Mn/kg diet, respectively. Higher activities of glutathione peroxidase (GSH-Px) and superoxide dismutase (total-SOD) were found in both liver and breast muscle of chicks fed diets supplemented with inorganic minerals. In chicks fed MnSO4.H2O, ADG, FCR, Mn balance, and concentration in liver were optimized at 59.8, 74.3, 20.6, and 43.1 mg supplemental Mn/kg diet, respectively. In MnPro fed chicks, ADG, FCR, Mn balance, and concentration in liver and breast were optimized at 20.6, 38.0, 16.6, 33.5, and 62.3 mg supplemental Mn/kg, respectively. Conclusion Lower levels of organic Mn were required by growing chicks for performance optimization compared to inorganic Mn. Based on the FCR, the ideal supplemental levels of organic and inorganic Mn in chick feeds were 38.0 and 74.3 mg Mn/kg diet, respectively.
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- 2021
8. Selenium source and level on performance, selenium retention and biochemical responses of young broiler chicks
- Author
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Fabyano Fonseca e Silva, Jorge Cunha Lima Muniz, P. R. Arnaut, Melissa Izabel Hannas, Horacio Santiago Rostagno, Gabriel da Silva Viana, James Eugene Pettigrew, Lucimauro Fonseca, and Warley Junior Alves
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Selenium yeast ,chemistry.chemical_element ,Biological Availability ,Zinc ,chemistry.chemical_compound ,Selenium ,Animal science ,Animals ,chemistry.chemical_classification ,Tissue mineralization ,lcsh:Veterinary medicine ,General Veterinary ,Dose-Response Relationship, Drug ,Glutathione peroxidase ,0402 animal and dairy science ,Broiler ,04 agricultural and veterinary sciences ,General Medicine ,Micronutrient ,040201 dairy & animal science ,Animal Feed ,Bioavailability ,Diet ,Trace Elements ,Inorganic salts ,chemistry ,040102 fisheries ,0401 agriculture, forestry, and fisheries ,lcsh:SF600-1100 ,Animal Nutritional Physiological Phenomena ,Selenium balance ,Chickens ,Research Article ,Organic trace minerals - Abstract
Background Selenium (Se) has been recognized as an essential micronutrient for nearly all forms of life. In recent decades, broiler responses to dietary Se supplemental levels and sources have received considerable attention. On environmental grounds, organic trace mineral utilization in practical broiler feeds has been defended due to its higher bioavailability. In such feeds, trace minerals are provided simultaneously in the same supplement as inorganic salts or organic chelates, a fact commonly ignored in assays conducted to validate organic trace mineral sources. The current assay aimed to investigate growth and biochemical responses, as well as Se retention of growing chicks fed diets supplemented with organic and inorganic Se levels and where the trace minerals (zinc, copper, manganese, and iron) were provided as organic chelates or inorganic salts according to Se source assessed. In so doing, a 2 × 5 factorial arrangement was used to investigate the effects of sodium selenite (SS) and selenium-yeast (SY) supplemented in feeds to provide the levels of 0, 0.08, 0.16, 0.24, and 0.32 mg Se/kg. Results Chicks fed selenium-yeast diets had body weight (BW), and average daily gain (ADG) maximized at 0.133 and 0.130 mg Se/kg, respectively. Both Se sources linearly increased (P P P P P Conclusions Based on performance traits, the supplemental level of organic Se as SY in organic trace minerals supplement to support the maximal growth of broiler chicks is 0.133 mg Se/kg.
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- 2021
9. Sources and levels of zinc affect relative gene expression related to protein metabolism in broilers
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James Eugene Pettigrew, M.I. Hannas, Bruno Reis de Carvalho, S.E.F. Guimaraes, Horacio Santiago Rostagno, D.L. Silva, H.C. Ferreira Júnior, H.C. Oliveira, and C.R. Ferreira
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chemistry.chemical_compound ,chemistry ,Biochemistry ,Gene expression ,Protein metabolism ,chemistry.chemical_element ,Zinc ,Affect (psychology) - Published
- 2019
10. Sources and levels of zinc affect the expression of genes involved in broiler lipid metabolism
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H.C. Ferreira Júnior, Bruno Reis de Carvalho, Horacio Santiago Rostagno, James Eugene Pettigrew, S.E.F. Guimaraes, L. F. T. Albino, H.C. Oliveira, D.L. Silva, and M.I. Hannas
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chemistry ,Biochemistry ,Broiler ,chemistry.chemical_element ,Lipid metabolism ,Zinc ,Biology ,Affect (psychology) ,Gene - Published
- 2019
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