RESUMO -O estudo foi conduzido com o objetivo de avaliar os efeitos da inclusão de farelo de trigo (FT) na ração sobre o desempenho de frangas semipesadas nas fases de recria 1 (7 a 14 semanas de idade) e recria 2 (15 a 19 semanasde idade) e seu efeito residual durante a fase inicial de produção de ovos. Foram utilizadas 160 frangas Lohmann Brown distribuídas em delineamento inteiramente casualizado, com quatro níveis de FT na ração: 0 (controle), 10, 20 e 30%, que resultaram em quatro tratamentos, com cinco repetições de oito aves na fase de recria 1. Ao completarem 14 semanas, as aves foram transferidas para gaiolas de arame galvanizado, redistribuídas em seis repetições de seis aves. Utilizaram-se 144 aves e descartaram-se, aleatoriamente, quatro aves por tratamento, constituindo a fase de recria 2. A adição de FT diminuiu linearmente o peso vivo final e o ganho de peso, resultando em reduções de 1,15 e 0,03 g, respectivamente, para cada 1% de inclusão de FT na ração.O consumo de água aumentou de forma quadrática e cresceu, em valores absolutos, com o aumento de 0 a 30% de farelo de trigo. A cada aumento de 1% de FT na ração, a idade das aves ao primeiro ovo elevou aproximadamente 0,6 dia e o peso do ovo em 0,22 g. A inclusão de farelo de trigo na ração reduz a taxa de crescimento de frangas, atrasa o início da postura, mas melhora o peso inicial dos ovos em relação a dietas à base de milho e de farelo de soja. Palavras-chave: alimento alternativo, desempenho, idade ao primeiro ovo Wheat bran in growing phase laying hens feedingABSTRACT -This study aimed to evaluate the effect of the inclusion of the wheat bran (WB) in the ration on egg brown chicken (Lohmann Brown) performance in the growing phase 1 (7 to 19 week of age) and growing phase 2 (15 to 19 week of age) and its residual effects on initial egg production. One hundred-sixty chickens were allotted to a completely randomized design with four level of WB in the ration: 0 (control), 10, 20 and 30%, that resulted in four treatments, with five replicates of eight birds in the growing phase 1. At the 14 th week, the birds were transferred to galvanized wire cages and reallocated in six replicates of six birds each. A total of 144 birds were used and, randomly, four birds per treatment were discarding per treatment, constituting the growing phase 2. The addition of the WB linearly decreased the final body weight and the weight gain, resulting in decreasing of 1.15 g and 0.0 3g, respectively for each 1% of WB inclusion in the ration. Water intake show a quadratic effect and increased in absolute values with the addition of WB from 0 to 30%. The birds age at the first egg production and egg weight increased 0.6 day and 0.22 g, respectively for each 1% of WB in the ration. The inclusion of WB reduces chickens growth rate, delays posture starting and improves egg initial weight when compared to corn and soybean meal based diets.
RESUMO -O estudo foi conduzido com o objetivo de avaliar os efeitos da inclusão de farelo de trigo (FT) na ração com ou sem a suplementação de um complexo enzimático (CE) sobre o desempenho e a produção de ovos de frangas semipesadas na fase de produção. Foram utilizadas 288 frangas Lohmann Brown, distribuídas em delineamento inteiramente casualizado, em esquema fatorial 4 × 2, composto de quatro níveis de farelo de trigo (0, 3, 6 e 9%) na ração e da suplementação de complexo enzimático (0 ou 100 g/100 kg de ração), com oito tratamentos e seis repetições de seis aves. O complexo enzimático continha as enzimas β-galactosidase, galactomananase, xilanase e α-glucanase. O consumo de ração, o peso vivo final, a produção de ovos, o peso e a massa de ovos e a conversão por massa e por dúzia de ovos não foram afetados pela inclusão do farelo de trigo nas rações. A gravidade específica da casca dos ovos piorou com o aumento dos níveis de farelo de trigo nas dietas. Nenhuma característica foi afetada pela adição do complexo enzimático na ração, com exceção do peso do ovo, que melhorou de 62,74 para 64,28 g. Recomenda-se o uso de até 9% de farelo de trigo em rações para poedeiras em produção. A adição de α-galactosidase, galactomananase, xilanase e α-glucanase aumenta o peso dos ovos.Palavras-chave: alimento alternativo, enzimas exógenas, produção de ovos Wheat bran and enzymatic complex in the feeding of laying hens in the production phase ABSTRACT -The study was carried out with the objective to evaluate the effects of the inclusion of the wheat bran (WB) with or without supplementation of an enzymatic complex (EC) on the performance of semi-heavy hens in the eggproduction phase. A total of 288 Lohmann Brown pullets were used, distributed to a completely randomized design in 4 × 2 factorial arrangement, composed by four WB levels (0, 3, 6 and 9%) in the ration and enzymatic complex supplementation (0 or 100g/100 kg diet), with eight treatments and six replicates of six birds. The enzymatic complex contained the enzymes β-galactosidase, galactomananase, xilanase and α-glucanase. Feed intake, final body weight, egg production, egg weight, egg mass, egg mass feed conversion or egg dozen feed conversion was not affected by WB inclusion in the diets. Egg shell specific gravity deteriorated as WB levels increase in the diets. None of the characteristics was affected by the enzymatic complex supplementation, except for egg weight, that improved from 62.74 to 64.28 g. Then, the use up to 9.0% of wheat bran in the ration is recommended for semi-heavily chickens in the production phase. The supplementation of α-galactosidase, galactomannanase, xylanase and α-glucanase improve egg weight.
RESUMO -Dois experimentos foram realizados para determinar o valor nutricional do ovo desidratado (OD), o efeito do tempo de jejum pós-eclosão (TJPe) e a inclusão do ovo desidratado em rações para frangos de corte. No primeiro experimento, 120 pintos de corte machos, linhagem Ross-308, foram alojados em delineamento inteiramente casualizado, com três tratamentos e cinco repetições de oito aves. As coletas de excretas foram realizadas no período de 24 a 29 dias de idade, pela manhã e à tarde. No segundo experimento, um lote misto de 810 pintos da linhagem Cobb-500, com peso vivo inicial 33,41 ± 0,53, foi alojado em boxes de 1,0 × 1,5 m. O delineamento experimental utilizado foi o inteiramente casualizado com 9 tratamentos e 6 repetições de 15 aves, em esquema fatorial 3 × 3, com três níveis de ovo desdratado (0, 2 e 4%) e três tempos de jejum pós-eclosão (28, 40 e 52 horas), correpondentes a 0, 12 e 24 horas de jejum pós-alojamento, respectivamente.O ovo desidratado apresentou 51,54% de PB e 4.278 kcal EMAn. Na fase de 1 a 7 dias, o peso vivo, o ganho de peso e o consumo de ração entre as aves submetidas a jejum de 40 e 52 horas foram inferiores aos daquelas alimentadas mais cedo (às 28 horas do tempo de jejum pós-eclosão), enquanto as aves submetidas a 52 horas de jejum pós-eclosão (24 horas de jejum pós alojamento) apresentaram os piores resultados. O nível de 4% de ovo desidratado na ração pré-inicial melhorou o peso vivo no segundo e terceiro dia de idade dos pintinhos. No período de 1 a 21 dias, o ovo desidratado pode ser utlizado na alimentação de frangos, pois não prejudica o desempenho das aves.Palavras-chave: alimento alternativo, desempenho, desenvolvimento inicial, valor nutritivo Effect of post-starvation hatching time, energy levels and addition of dried egg in pre-initial and initial diets for broiler chicksABSTRACT -Two experiments were carried out to determine the nutritional value of the dried egg (DEGG), and the effect of the post-starvation hatching time (PSHT) and the inclusion of dried egg powder in the diet of broiler chicks. In experiment 1, 120 male Ross-308 broiler chicks were housed according to a completely randomized design into three treatments and five repetitions of eight birds each. Excreta collection was daily performed from 24 to 29 days of age in the morning and afternoon. In experiment 2, a sex-mixed batch of 810 Cobb-500 chicks was used. Initial weight was 33.41 ± 0.53 g, and the chicks were housed in pens measuring 1.0 × 1.5 m. A completely randomized experimental design was used with nine treatments and six repetitions of 15 birds each, according to a 3 × 3 factorial of three DEGG levels (0, 2 and 4%) and three PSHT (28, 40 and 52 hours), corresponding to: 0, 12 and 24 hours of starvation after housing, respectively. DEGG showed 51.54% of CP and 4,278 kcal AMEn/kg. From 1 to 7 days of age, the birds submitted to starvation for 40 and 52 hours showed lower live weight, weight gain and feed intake when compared to birds fed sooner (at 28 hours PSHT). The poorest performance wa...
The objective of this study was to evaluate the effect of the inclusion of canola and coconut oils to diets of European quail (Coturnix coturnix) over performance and carcass yield. One hundred and ninety-two quail (eight-days old) were randomly allocated to four dietary treatments with six replicates of eight birds each. The treatments were arranged in a factorial 2×2 scheme with two sources of dietary oil containing two levels of canola and coconut oils (1 and 2%). For performance variables, the final weight was evaluated, and the carcass variables were feed intake, weight gain, and feed conversion. A significant difference was observed between treatments for feed intake, with the inclusion of 2% canola oil providing higher intake. There was also significant effect for carcass characteristics on weight at fasting, eviscerated carcass, liver and gizzard weights, as well as liver, heart, and gizzard yields. The inclusion of vegetable oil such as canola and coconut oils in diets for European quail at the levels of 1 and 2% can be performed with no negative effect on performance from 8 to 42 days of age.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.