Navegando por Assunto "growth"

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    Densidade de estocagem do híbrido pintado amazônico (Pseudoplatystoma tigrinum fêmea x Leiarius marmoratus macho) em viveiros escavados
    (Universidade Federal de Goiás, 2011-08-01) GOMIDES, Pedro Fellipe Vieira; MASCARENHAS, Alessandra Gimenez; http://lattes.cnpq.br/9082632592936909; GUIMARÃES, Igo Gomes; http://lattes.cnpq.br/1959358415883904; LEANDRO, Nadja Susana Mogyca; http://lattes.cnpq.br/3136809931691012
    In order to determine the stocking density for hybrid amazon pintado (Pseudoplatystoma tigrinum female x Leiarius marmoratus male) were distributed in 12 ponds, 570 juveniles with initial average weight of 82 g. The ground ponds of 50 m2 has minimum and maximum depth of 0.9 and 1.3 m. Different stocking densities were studied 0.5; 0.8; 1.1 e 1.4 fish/m2 during 270 days. The completely randomized design with four treatments and three replicates, each pond was an experimental unit, and the number of fish per pond varied according to treatments. The variables studied were: water quality, productive performance, biometric indices, glucose and economic evaluation. For statistical analysis, data were subjected to analysis of variance with the statistical program SAS ® (2000), in case of statistical difference was used the Tukey test (5%). Was performed polynomial regression for the different densities. The greatest total weight and weight gain was obtained for the lower density. There was a negative linear regression for body weight, weight gain and feed intake with increasing density. Water quality and physiological characteristics of the amazon pintado were not affected by stocking density. It can be concluded, based on performance and economic profitability , the best stocking density for hybrid Amazon pintado that was 0.8 fish/m2.
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    RAÇÕES COM DIFERENTES NÍVEIS DE INCLUSÃO DE ÁGUA PARA SUÍNOS NA FASE DE CRECHE
    (Universidade Federal de Goiás, 2009-03-03) SILVA, Juliana Luís e; STRINGHINI, José Henrique; http://lattes.cnpq.br/8505634095383289; SILVA, Paulo César; http://lattes.cnpq.br/4162443606090063; LOPES, Eurípedes Laurindo; http://lattes.cnpq.br/9481015142857768
    The objective was to evaluate the use of feeds with different levels of inclusion of water for pigs during the weaning phase. Two experiments were conducted, one of digestibility and other of performance, developed in the Division of Suinoculture of the Department of Animal Production, of the School of Veterinary Medicine of the Federal University of Goiás (DPA / EV / UFG). The treatments in both experiments consisted of physical forms of the experimental feed. The treatment 1 (T1) was a basal dry and mashed feed. Treatment two (T2) and treatment three (T3) consisted of basal feed with the dilution ratio of 1:1 (1 kg of water for 1 kg of ration) and basal feed with the dilution ratio of 2:1 (2 kg water for 1 kg of ration) respectively, mixed and homogenized at the time of suplly and immediately provided to the animals. In the metabolism experiment 12 animals were used, castrated males, with average of 19.09 ± 2.88 kg of live weight. The experimental design suitable for the metabolism testing was the completely randomized, with three treatments and four replication. In the performance test were used 36 crossbred pigs of commercial line, with initial weight of 12.32 ± 1.4 kg, with 18 females and 18 castrated males. It was used the completely randomized design with three treatments and six replication, completing 18 experimental units, where each one was composed by a castrated male and a female. No significant differences were found for the digestibility coefficients of dry matter, crude energy, crude protein, ether extract, the mineral matter in the coefficient of metabolizability of the dry matter and crude energy. However, the rate of metabolism of crude protein was significantly higher for the T2. Diets with different levels of inclusion of water did not affect the animals performance, as well as the initial and final weight, daily and total weight gain, total and daily feed consumption and feed conversion of pigs during the weaning phase