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Search Results: 1 - 10 of 330201 matches for " Horacio Santiago;Sá "
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Changes in body composition in lactating adolescent mothers
González,Horacio F; Malpeli,Agustina; Mansur,José L; De Santiago,Soledad; Etchegoyen,Graciela S;
Archivos Latinoamericanos de Nutrición , 2005,
Abstract: we assessed changes in body composition in lactating adolescent mothers living under unfavorable socioeconomic and sanitary conditions. a total of 17 healthy primiparous adolescents under 17 years of age attending the maternity hospital of the city of la plata, argentina, were followed at 4 time points (15 days and 3, 6 and 12 months postpartum) to assess, a) dietary intake, b) practice of physical activity, c) nutritional condition (weight, height, body mass index; bmi; according to age, and body composition by the sum of skinfold measurements), d) characteristics of lactation, and e) growth parameters of the child. the mean age of adolescents was 15.06 ± 0.66 years (mean menarchal age, 11.59 ± 0.80 years). all adolescents breastfed up to 12 months postpartum, and maternal milk covered above 80% the baby intake (mean 7.06 ± 2.54 breast feeds/day). while the daily intake of nutrients by adolescent mothers was constant up to 6 months postpartum, there was a modest decrease in that of proteins, carbohydrates and lipids 15 days and 12 months postpartum. the decrease in energetic intake during the same period was significant (p< 0.05). the practice of physical activity was classified as moderate during the follow-up period. whereas mean basal percent of fat body mass (fbm) was 29.85 ± 2.87, and decreased significantly at 6 (27.2% ± 3.9%; p= 0.02) and 12 (26.1% ± 3.9%; p=0.002) months postpartum, changes in lean body mass (lbm) were not significant. in conclusion, lactating adolescents maintained lbm, whereas weight, fbm and bmi decreased markedly from 3 months postpartum.
Valores de composi??o química e energética de alguns alimentos para aves
D'Agostini, Priscila;Gomes, Paulo Cezar;Albino, Luiz Fernando Teixeira;Rostagno, Horacio Santiago;Sá, Luciano Moraes;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000100017
Abstract: the experiment was carried out to determine the chemical and the energetic values of eight feedstuffs (corn grain, corn pre-cooked i and ii, canola meal, spray-dried plasma, poultry by-product meal, glucose and corn starch) for birds. to determine the apparent metabolizable energy (ame) and nitrogen corrected apparent (amen) values, the traditional method of total excreta collection was used, with 400 broiler chicks, male and female, 21 days old. a completely randomized design, with ten treatments (eight feedstuffs and two reference diets), and five replications of eight birds per experimental unit, was used. the corn grain and pre-cooked i and ii replaced 40%, and the starch and glucose 20% of the reference diet containing 26% crude protein (cp); the canola meal replaced 40%, and spray-dried plasma and poultry by-products meal 20% of the reference diet containing 18% cp. dry matter - dm (%), cp (%), ame (kcal/kg) e amen (kcal/kg) values were, respectively, for corn grain: 87.72, 7.33, 3,246, and 3,235; for pre-cooked i: 87.75, 7.14, 3,385, and 3,379; for pre-cooked ii: 87.88, 7,34, 3.187 and 3.179; for canola meal: 87,53, 37,89, 1,793 and 1,778; for spray-dried plasma: 90,67, 74,24, 3.503 and 3.474; and for poultry by-product meal: 90.35, 64.98, 4,293 and 4,268. for the glucose and corn starch, only the values of dm (%), ame (kcal/kg) and amen (kcal/kg) were determined, and for the glucose the values were 99.12, 3,170, and 3,168 and for corn starch, 85.52, 3,203, and 3201, respectively.
Exigência nutricional de treonina digestível para galinhas poedeiras no período de 34 a 50 semanas de idade
Sá, Luciano Moraes;Gomes, Paulo Cezar;Cecon, Paulo Roberto;Rostagno, Horacio Santiago;D'Agostini, Priscila;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000800018
Abstract: with the objective to establish the nutritional requirement of threonine for light and semi-heavy laying hens in the period from 34 to 50 weeks old, 580 laying hens (half lohmann and half lohmann brown) submitted to a basal ration containing 2.850 kcal me/kg, 14.0% cp, supplemented of five levels (0.00, 0.035, 0.07, 0.105, and 0.140%) of l-threonine, in order to provide 0.410, 0.445, 0.480, 0.515, and 0.550% of digestible threonine in the rations. a 5 x 2 (threonine level and laying hen strain) factorial arrangement, with six replications per treatment and six hens per experimental unit in a completely randomized design was used. egg production (%), egg mass and average egg weight (g), feed intake (g/hen.day), feed conversion (kg feed/egg dozen), body weight change (g) and internal egg quality (haugh units, albumen and yolk index) were evaluated. the threonine levels did not affect the body weight change, feed intake, egg weight and internal egg quality in both laying hen strains. feed conversion, egg production, egg mass and haugh units were positive influenced by the threonine level. the digestible threonine requirement, estimated by the quadratic model, for the light and the semi-heavy laying hens, was 0.510 and 0.517% in the diet, corresponding to the daily intake per hen of 583 and 575 mg lysine/day, respectively.
Exigência nutricional de cálcio e sua biodisponibilidade em alguns alimentos para frangos de corte, no período de 1 a 21 dias de idade
Sá, Luciano Moraes;Gomes, Paulo Cezar;Albino, Luiz Fernando Teixeira;Rostagno, Horacio Santiago;D'Agostini, Priscila;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000100020
Abstract: one experiment was carried to determine the nutritional requirement of calcium for broilers in the starting phase (1 to 21 days) and to evaluate the availability of this mineral in dicalcium phosphate, calcitic limestone and dolomitic limestone. seven hundred and twenty 1-day old avian farm broiler chicks (360 from each sex) were used. the experiment lasted 21 days. a completely randomized design, with 12 treatments, six replications and 10 birds per experimental box (five males and five females) was used. a basal diet was formulated to meet the birds nutritional requirements, except for the calcium, that remained deficient at the level of 0.161%. the basal diets were supplemented with 0.01, 0.25, 0.50, 0.75, 1.00 and 1.25% calcium levels from calcium carbonate and two levels of calcium (0.50 and 0.75%) from each source in test: dicalcium phosphate, calcitic limestone and dolomitic limestone. the first six treatments were used to estimate the calcium requirements of broilers. to determine the calcium availability in the studied sources, the treatments with 0.25, 1.00 and 1.25% of calcium were not considered. at the end of experiment, 144 birds were sacrificed by cervical dislocation for the purpose of determining the tibia breaking strength, calcium and ash levels in their tibias. according to the biological values observed for the chickens, the estimated calcium requirements were of 1.02% for broilers from 1 to 21 days old. however, according to the tibia breaking strength, the calcium requirement suggested for broilers from 1 to 21 days of age would be 1.20%. the average values of relative calcium availability were 99.99% for dicalcium phosphate, 84.67% for calcitic limestone and 75.28% for dolomitic limestone.
Exigência nutricional de lisina digestível para galinhas poedeiras no período de 34 a 50 semanas de idade
Sá, Luciano Moraes;Gomes, Paulo Cezar;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;D'Agostini, Priscila;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000800016
Abstract: with the objective to establish the nutritional requirement of lysine for light and semi-heavy laying hens, in the period from 34 to 50 weeks old, 360 laying hens (half lohmann and half lohmann brown) were submitted to a basal ration containing 2.850 kcal me/kg, 15.0% cp, supplemented with five levels (0.00, 0.05, 0.10, 0.15 and 0.20%) of l-lysine, to provide 0.584, 0.634, 0.684, 0.734, and 0.784% of digestible lysine in the rations. a 5 x 2 (lysine level and laying hen strain) factorial arrangement, with six replications per treatment and six hens per experimental unit in a completely randomized design was used. egg production (%), egg mass and average egg weight (g), feed intake (g/hen.day), feed conversion (kg feed /egg dozen), body weight change (g) and internal egg quality (haugh unit, albumen and yolk index) were evaluated. the lysine levels did not affect the body weight change, feed intake and egg quality in both laying hen strains. feed conversion and egg production, average egg weight and egg mass were positive influenced by the lysine level, in light and the semi-heavy. the digestible lysine requirement estimated by quadratic model, for the light and the semi-heavy laying hens, was 0.732 and 0.715% in the ration, corresponding to the daily intake per hen of 893 and 804 mg lysine/day, respectively.
Exigência de fósforo disponível para frangos de corte machos e fêmeas de 22 a 42 e de 43 a 53 dias de idade
Gomes, Paulo Cezar;Runho, Richard Cesar;D'Agostini, Priscila;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;Lopes, Paulo Sávio;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000700012
Abstract: eight hundred and sixty-four and 720 broilers, 50% of each sex, from 22 to 42 and from 43 to 53 days of age, respectively, were used to determine the available phosphorus requirement for male and female broilers in the growing and finishing phases. six supplementary levels of available phosphorus were added to available phosphorus deficient basal diets. the levels of available phosphorus added in (.0, .09, .18, .27, .36 and .45%) for the growing and (.0, .07, .14, .21, .28 and .35%) for finishing phases. body weigth gain, feed intake, feed: gain ratio, ashes and phosphorus in the bone and bone fracture resistance were evaluated from 22 to 42 and from 43 to 53 days of age. it was suggested that available phosphorus requirements for the growing phase (22 - 42 days of age) are .442% or .142% of available phosphorus/mcal of me and .454% or .146% of available phosphorus/mcal of me, and finishing phase (43 - 53 days of age) are .310% or .098% of phosphorus/mcal of me and .240% or .076% of phosphorus/mcal of me, for males and females, respectively.
Exigência nutricional de cálcio para frangos de corte, nas fases de crescimento e termina??o
Sá, Luciano Moraes;Gomes, Paulo Cezar;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;Cecon, Paulo Roberto;D'Agostini, Priscila;
Revista Brasileira de Zootecnia , 2004, DOI: 10.1590/S1516-35982004000200017
Abstract: two experiments were carried out to determine the nutritional requirement of calcium for broilers in growing (22 to 42 days), and finishing (43 to 53 days) phases. three hundred and sixty avian farm broiler chicks (180 from each sex) were used in both trails. the first experiment lasted 21 days and the second one, 10 days. a completely randomized design was used in both experiments, with six treatments, six replications and 10 birds per experimental unity (five males and five females). two basal diets were formulated to meet the birds nutritional requirements, except for the calcium, that remained deficient at the level of 0.16%. the basal diets in each experiment were supplemented with 0.0, 0.25, 0.50, 0.75, 1.00, and 1.25% calcium from calcium carbonate, resulting in the levels of 0.16, 0.41, 0.66, 0.91, 1.16 and 1.41% of calcium, and the treatments were used to estimated the calcium requirements of broilers. at the end of each experiment, 72 birds were sacrificed by cervical dislocation for the purpose of determining the tibia breaking strength and tibia obtained calcium and ash. weight gain, feed:gain ratio, tibia calcium contents (percentage and gram), tibia breaking strength (kgf), ashes contents in the tibia (percentage and gram) were the evaluated variables. the calcium requirements were estimated using the quadratic regression model. according to the biological values observed for the chickens were suggested the calcium requirements estimates of 1.02 and 1.01% for broilers from 22 to 42 and 43 to 53 days old, respectively. however, according to the tibia breaking strength, the calcium requirement suggested for broilers from 22 to 42 and 43 to 53 days old would be 1.28 and 1.18% respectively.
Rela??es metionina mais cistina digestível: lisina digestível em dietas suplementadas com ractopamina para suínos em termina??o
Pena, Sérgio de Miranda;Lopes, Darci Clementino;Rostagno, Horacio Santiago;Silva, Francisco Carlos de Oliveira;Donzele, Juarez Lopes;
Revista Brasileira de Zootecnia , 2008, DOI: 10.1590/S1516-35982008001100012
Abstract: the experiment was carried out to determine digestible methionine + cystine: digestible lysine (met + cys/lys) ratio for barrows selected for deposition of lean meat in the carcass supplemented with ractopamine (rac) in the finishing phase. sixty-four barrows with 84.68 ± 1.34 kg bw was allotted to an experimental randomized block design, fed diets containing four met + cys/lys ratio (0.54, 0.58, 0.62 and 0.66) supplemented with ractopamine, eight replications, during a period of 28 days. met + cys/lys did not affect feed intake, average daily gain, feed conversion, fat thickness, lean meat amount, carcass weight, lean meat percentage and carcass yield of pigs. met + cys/lys ratio influence quadraticaly the concentrations of total cholesterol in the loin and linearly the cholesterol concentrations in the subcutaneous fat. the lowest levels of total cholesterol were observed in pigs fed diet with 0.66 met + cys/lys ratio. in pigs from 85 to 109 kg supplemented with ractopamine, the 0.54 met + cys/lys ratio meets the requirement for better performance and better carcass traits, while to lower the cholesterol levels in the loin and subcutaneous fat the requirement is 0.66 met + cys/lys ratio.
Exigência nutricional de metionina + cistina digestível para galinhas poedeiras no período de 34 a 50 semanas de idade
Sá, Luciano Moraes;Gomes, Paulo Cezar;Albino, Luiz Fernando Teixeira;Rostagno, Horacio Santiago;Nascif, Carla Cristina Cardoso;
Revista Brasileira de Zootecnia , 2007, DOI: 10.1590/S1516-35982007000800017
Abstract: with the objective to establish the nutritional requirement of methionine + cystine for light and semi-heavy laying hens, in the period from 34 to 50 weeks old, 360 laying hens (half lohmann and half lohmann brown) were submitted to a basal ration containing 2.850 kcal me/kg, 15.0% cp, supplemented with five levels (0.00, 0.052, 0.107, 0.162, and 0.217%) of dl-methionine, to provide 0.517, 0.569, 0.624, 0.679, and 0.734% of digestible methionine + cystine in the rations. a 5 x 2 (methionine + cystine level and laying hen strain) factorial arrangement, with six replications per treatment and six hens per experimental unit in a completely randomized design was used. egg production (%), egg mass and average egg weight (g), feed intake (g/hen.day), feed conversion (kg feed /egg dozen), body weight change (g) and internal egg quality (haugh units, albumen and yolk index) were evaluated. the methionine + cystine levels did not affect the body weight change, feed intake and egg quality in both laying hen strains. feed conversion and egg production were positive influenced by the methionine + cystine level, as well as average egg weight and egg mass that presented a quadratic effect, exception for average eggs weight of semi heavy laying hens that presented linear effect. the digestible methionine + cystine requirement, estimated by quadratic model, for the light and the semi-heavy laying hens, was 0.693 and 0.692% in the ration, corresponding to the daily intake per hen of 825 and 793 mg lysine/day, respectively.
Composi??o química, valores energéticos e aminoácidos digestíveis verdadeiros de farinhas de vísceras para aves
Eyng, Cinthia;Nunes, Ricardo Vianna;Rostagno, Horacio Santiago;Albino, Luiz Fernando Teixeira;Nunes, Christiane Garcia Vilela;Bruno, Luís Daniel Giusti;
Revista Brasileira de Zootecnia , 2010, DOI: 10.1590/S1516-35982010000400012
Abstract: it was aimed to determine energetic and amino acidic composition, coefficients of metabolizity of energy and digestibility of viscera meal for poultry. the method of forced feeding with cecectomized adult cockerel was used. a completely randomized design was used, with 4 different viscera meals (3 of poultry, one from swine, and one in fast), six replications and one cecectomized cockerel per experimental unit. the apparent metabolizable energy values were the following: 2,878; 3,179; 3,005 and 2,145; the values of aparent metabolizable energy corrected for nitrogen balance were the following: 3,017; 3,487; 3,155; and 2,414 kcal/kg of natural matter, the values of aparent metabolizable energy corrected were: 3,720, 4,016, 3,840 and 2,981kcal/kg of natural matter and the values of aparent metabolizable energy corrected for nitrogen balance were 3,239, 3,367, 3,350 and 2,372 kcal/kg of natural matter. according to energetic values and gross energy, the apparent metabolizable coefficients were 53.65; 61.96; 60.20 and 46.13; for the correct apparent metabolizability they were 56.22; 67.96; 63.22 and 51.91; for the real metabolizity they were 69.33; 78.28; 76.94 and 64.1; and the values for corrected real metabolizability were 60.36; 65.62; 67.12 and 51.01, for poultry and swine viscera meal. the real digestibility average coefficients of essential and non essential amino acids for poultry and swine viscera meal are 81.20 and 74.55; 75.73 and 67.15; 88.45 and 85.20; 89.27 and 84.35, respectively.
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