[Show abstract][Hide abstract] ABSTRACT: Avaliou-se o efeito do balanço eletrolítico (BE) em rações com diferentes níveis de eletrólitos para suínos na fase de crescimento criados em alta temperatura. Foram utilizados 200 suínos machos castrados, com peso inicial de 25,3±1,3 kg e final de 68,8±3,4 kg, distribuídos em delineamento experimental inteiramente casualizado com cinco tratamentos e quatro repetições com dez animais por unidade experimental, para a fase de crescimento T1(testemunha) ração sem suplementação de eletrólitos 191 mEq/kg; T2 (NaHCO3) ração suplementada bicarbonato de sódio (NaHCO3) 250 mEq/kg; T3 (NaHCO3+KCl) ração suplementada NaHCO3 e cloreto de potássio (KCl) 250 mEq/kg; T4 (NaHCO3) ração suplementada NaHCO3 300 mEq/kg; e T5 (NaHCO3+KCl) ração suplementada com NaHCO3 e KCl 300 mEq/kg. As variáveis avaliadas foram consumo de ração, ganho de peso, consumo de nitrogênio, consumo de lisina, eficiência de utilização de nitrogênio para ganho, eficiência de utilização de lisina para ganho, conversão alimentar e os parâmetros fisiológicos, frequência respiratória e temperatura retal. Foi coletado sangue para mensurar as concentrações sorológicas de Na, Cl e K. A temperatura média foi 29,65±3,80º C com UR do ar 69,6±10,4%, Temperatura do Globo Negro de 31,95±1,98º C e Índice de Temperatura do Globo Úmido em 80,51±2,44. Os níveis de BE reduziram (P<0,05) consumo de ração e melhoram o consumo de nitrogênio. Os demais parâmetros de desempenho avaliados não foram afetados pelos diferentes balanços eletrolíticos (P>0,05). A correção do BE não influenciou o desempenho dos suínos.
Ciência e Agrotecnologia 02/2011; 35(1):186-194. DOI:10.1590/S1413-70542011000100024 · 0.73 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: The aim of this study was to evaluate performance and egg quality of Japanese quails (Coturnix japonica) fed rations with low-tannin sorghum replacing corn. Two hundred and ten 65-d female Japanese quails were distributed in a complete random design with five experimental rations (0, 25, 50, 75 and 100% replacement of corn by sorghum) and six replicates with seven birds. There was no significant effect of sorghum levels in the diets on any of the production characteristics in this experiment, which lasted for 112 days. As the levels of sorghum in the ration increased, yolk color and ration cost were reduced. Low-tannin sorghum can completely replace corn in rations for laying Japanese quails.
Revista Brasileira de Zootecnia 12/2010; 39(12):2697-2702. DOI:10.1590/S1516-35982010001200021 · 0.56 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Was carried an experiment with the objetive to evaluate the use of five levels of sugar (0, 4, 8, 16 and 32%) in substitution to the corn in the feed of broilers in the finishing phase. 320 chickens with 22 days of age, were randomly distributed for 20 box. The birds received water and feed ad libitum in all experimental period. The diets were isonetrogenous an isocaloric. The performance of the birds was evalueted. The birds were weigthed at 42 days of age and four birds of each experimental unit, two males and two females, were kept without food for a 12 hours. After this period the birds were slaughtered and eviscerated and carcass weight and yield as wells cuts yield were collected. Water, protein and body fat were observed. There was quadratic effect or the ration consumption, being 20.73 the point of maximum intake. The sugar influenced in a positive lineal way the weight and abdominal fat of the males. In the females negative lineal effect was for chest yield. With relations to the fat deposition and protein in the carcass, the levels of sugar didn´t influence in the males, in the females they caused positive linear effect for the fat body deposition. Fue realizado un experimento con el objetivo evaluar la utilización de cinco niveles de azúcar (0, 4, 8, 16 y 32%) en substitución del maíz en la alimentación de pollos asaderos en fase de terminación. 320 pollos con 22 días de edad, fueron distribuidos al acaso en 20 lotes. Las aves recibieron agua y alimento a voluntad durante toda la fase experimental, las raciones fueron isoprotéicas e isocalóricas. Fueron evaluadas las características de desempeño; a los 42 días de edad las aves fueron pesadas y retiradas 4 de cada unidad experimental, dos machos y dos hembras, que posteriomente fueron sometidas a ayuno de 12 horas y luego sacrificadas y evisceradas, para evaluar peso y rendimiento de canal y de cortes nobles. Tambien fueron observados los contenidos de agua, proteína y grasa corporal. Hubo efecto cuadrático para consumo de ración, siendo 20.73 el punto de maxima ingestión. El azúcar influyó de forma lineal positiva sobre el peso y rendimiento de grasa abdominal en los machos. En la hembras hubo efecto lineal negativo para rendimiento de pechuga. Los niveles de azúcar no influenciaron los contenidos de grasa y proteína en la canal de machos, en la hembras causaron efecto lineal positivo en la cantidad de gordura corporal.
[Show abstract][Hide abstract] ABSTRACT: Um experimento foi realizado com 200 frangos de corte machos da linhagem Cobb, a fim de avaliar desempenho, características de carcaça e teores de colesterol em tecidos e soro quando alimentados com rações compostas por milho e farelo de soja suplementadascom diferentes níveis de semente e casca de maracujá. Os tratamentos foram: 4% de casca, 8% de casca, 4% semente e 8% semente. O delineamento experimental utilizado foi o inteiramente casualizado em modelo fatorial 2x2, com um tratamento adicional, quatrorepetições e dez aves por unidade experimental. Foram utilizados contrastes ortogonais com dois níveis de suplementação e dois subprodutos. As aves foram criadas com as rações experimentais a partir de 22 dias e abatidas aos 42 dias de idade para a coleta de dados. A utilização de subprodutos de maracujá modificou os teores de colesterol nos tecidos sem afetar a maior parte das características de desempenho das aves. A semente e casca de maracujá reduziram o conteúdo de colesterol presente nos músculos do peito e da perna.
A trial was performed using two hundred male Cobb broilers to evaluate the performance, carcass characteristics and cholesterollevels in the tissue and serum, when fed diets based on corn and soybean meal supplemented with different levels of passion fruit seed and peel. The following treatments were evaluated: blank treatment, 4% of peel, 8% of peel, 4% of seed and 8% of seed. A completely randomized experimental design was used with a 2 x 2 factorial scheme with an additional treatment, four repetitions and ten birds per experimental unit. A model of orthogonal contrast was used, withtwo levels of supplementation and two kinds of byproducts. The birds were raised with the experimental diets from 22 to 42 days of age; they were then slaughtered for collection of data. The use of passion fruit by-products modified the cholesterol levels without affecting the majority of the performance characteristics of the broilers. The seeds and peel of passion fruit reduced the cholesterol contents in the breast and leg.
[Show abstract][Hide abstract] ABSTRACT: The fatty acids composition of broiler tissue was evaluated using two hundred male Cobb chicks. They were raised from 22 days of age with experimental diets based on corn and soybean meal supplemented with 4 or 8% of passion fruit peel and 4 or 8% of passion fruit seed. A completely randomized experimental design was used with a 2 x 2 factorial arrangement with an additional treatment (Control, 0% of passion fruit byproducts), with four replications and ten birds per experimental unit. A orthogonal contrast with two levels of supplementation and two types of byproducts., The birds were slaughtered at 42 days of age for fatty acids composition analyses. The use of passion fruit seed reduced the content of palmitic C16:0, estearic C18:0 and docosahexaenoic acid C22:6 in the breast. In the leg, passion fruit byproducts increased the content of linoleic C18:2, linolenic C18:3 and palmitic acid C16:0 and reduced the content of estearic acid C18:0.
Revista Brasileira de Zootecnia 11/2007; 36(6):2063-2068. · 0.56 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: One aimed in this work to evaluate, weekly, the egg yolk colour grade of japanese quails fed on diets with different levels of spice (163.8 mg bixin/100 g), in course of four weeks. Two hundred and forty japanese female quails (Coturnix japonica) were used in a completely randomized block outline, with eight treatments, five replicates and six quails per experimental unit. The treatments, consisted of eight experimental diets resultant from the combination of four spice levels in the diets (0, 1.5, 3.0 a 4.5%) and two energetic sources (corn and broken rice grains), were allotted to the plots, while the four experimental days (7(th), 14(th), 21(st) a 28(th)) consisted the splitplots. The estimated regression equation with the use of logarithmic model explained 96% of the variation of yolk colour scores data. At the 7(th) and 14(th) experimental days, the estimated spice levels that promoted yolk colour scores with free-range pattern (8.5 to 9.0 points) were 1.5%, for corn based rations, and 3.0%, for broken rice grains based rations. At the 21(st) and 28(th) experimental day, the estimated values were 0.75% (diets with corn) and 2.25% (diets with broken rice grains). In diets with 46% of corn or broken rice grains, the use of upper levels to 3.0% of spice increased the pigment losses by excreta and consequent capacity decrease of store yolk pigments.
Ciência e Agrotecnologia 09/2007; 31(5):1525-1531. · 0.73 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: In a study to establish total lysine requirement for growing japanese quails, 400 female quails 7.3 g +/- 0.3 g mean body weight were used from one to 42 days of age. A completely randomized experimental design was adopted, with five treatments and four replicates, with 20 birds per experimental unit. The treatments were five total lysine levels in the diet (0.90%; 1.05%; 1.20%; 1.35% and 1.50%). The evaluated data were: daily feed intake (g/ bird/ day); total feed intake (g/ bird/ period); body weight (g/ bird); total body weight gain (g/ bird/ period); feed conversion rate (g of feed intake / g of weight gain); mortality (% / period) and uniformity (% / period). The growing curve of the quails fed each total lysine level studied was also described. There was no statistical significant effect for all the evaluated data (P > 0.05). The level of 0.90% total lysine in 20.70% crude protein diet met the requirement of japanese quails during growing period, equivalent to a daily total lysine intake of 96.9 mg/ bird.
Ciência e Agrotecnologia 07/2007; 31(4):1191-1196. · 0.73 Impact Factor
[Show abstract][Hide abstract] ABSTRACT: Apparent metabolizable energy (AME) and apparent metabolizable energy corrected for nitrogen retention (AMEn) were determined in seven foodstuffs tested in japanese quail feedings. Two hundred and eighty japanese female quails (Coturnix japonica), twenty-six-days-old were used in a completely randomized experimental design, with five replicates and seven quails per experimental unit. The treatments consisted on seven experimental diets and one reference diet. Each experimental diet was constituted, as fed basis, of 70% of the reference diet and 30% of food in test, except for the diet containing soy bean oil without phospholipid, which replaced 10% of the reference diet, as fed basis. The values of AME and AMEn (kcal/kg of fed basis) were: 3.124 and 3.122 (ground corn), 3.152 and 3.102 (spice), 2.980 and 2.947 (broken rice grains), 8.065 and 7.940 (soy bean oil without phospholipids), 2.633 and 2.651 (soybean meal), 2.477 and 2.492 (linseed meal) and 1.323 and 1.274 (peel and pulp of pineapple), respectively.
Arquivo Brasileiro de Medicina Veterinária e Zootecnia 02/2007; 59(1):210-217. · 0.20 Impact Factor