Efeito do peso inicial dos pintos e do período da dieta pré-inicial sobre o desempenho de frangos de corte

Stringhini, José Henrique; Resende, Aletéia di; Café, Marcos Barcellos; Leandro, Nadja Susana Mogyca; Andrade, María Auxiliadora

doi:10.1590/s1516-35982003000200014

Cited by 29 publications

(28 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Stringhini et al (2003) found that chick average weight at hatch influenced feed intake up to 21 days of age, but this relationship was not observed at 35 and 42 days. Higher threonine levels did not to activate the mechanisms regulating the appetite of broilers or changed the plasma amino acid profile or balance (Harper, 1970).…”

Section: -Coefficient Of Variationmentioning

confidence: 91%

Digestible Threonine Levels in the Starter Diet of Broilers Derived from Breeders of Different Ages

Tanure

Santos

Oliveira

et al. 2015

Rev. Bras. Cienc. Avic.

View full text Add to dashboard Cite

The aim of this study was to evaluate the effect of digestible threonine supplementation in the starter diet on the performance, intestinal parameters, and nutrient metabolism of broilers derived from breeders of different ages. In total, 480 one-day-old Cobb chicks, derived from 38-or 49-week-oldbreeders, were housed in experimental battery cages until 21 days of age and fed four different threonine levels (800, 900, 1,000, or 1,100 mg/kg) in the starter feed. A completely randomized experimental design in a 2x4 factorial arrangement (breeder age x threonine levels) was applied, totaling eight treatments with five replicates of 12 birds each. Broilers from older breeders fed 800 mg digestible threonine/kg of diet presented higher weight gain, with a positive linear effect. There was also an interaction between breeder age and threonine levels for the weight gain of 21-d-old broilers supplemented at maximum level of 1,003 mg Thr/kg diet during the starter phase. There was no effect of breeder age or threonine levels on nutrient metabolism during the period of 17-21 days. There was no influence of breeder age or threonine levels in the starter diet on intestinal morphometric measurements, absorption area, or percentage of goblet cells.

show abstract

Section: -Coefficient Of Variationmentioning

confidence: 91%

Digestible Threonine Levels in the Starter Diet of Broilers Derived from Breeders of Different Ages

Tanure

Santos

Oliveira

et al. 2015

Rev. Bras. Cienc. Avic.

View full text Add to dashboard Cite

show abstract

“…According to Ulmer-Franco et al (2010), good quality hatchlings are active, weigh between 40 and 44 g, their navel is healed upon removal from the hatcher, and their down is dry. Heavier hatchlings are also heavier at slaughter age compared with light hatchlings (Stringhini et al, 2003). Molenaar et al (2008) also reported that well-hydrated hatchlings with completely healed navels showed better performance during the rearing period (1-42 d).…”

Section: Introductionmentioning

confidence: 95%

Effect of Incubator Type and Broiler Breeder Age on Hatchability and Chick Quality

Araújo

Leandro

Mesquita

et al. 2016

Rev. Bras. Cienc. Avic.

View full text Add to dashboard Cite

Two experiments were conducted to evaluate the effect of broiler breeder age and incubator type on hatching parameters, hatch window, embryo diagnosis results, and hatchling physical quality. The treatments consisted of a combination of three broiler breeder ages (29, 35 and 59 weeks of age) and two incubator types (single stage, SS; or and multiple stage, MS). A completely randomized design in a 3x2 factorial arrangement was applied. In Experiment I, 1,896 eggs were used and 360 eggs in Experiment II. There was an interaction between breeder age and incubator type only for hatchling physical quality score. Independently of incubator type, hatchability rate, late embryo mortality, and egg contamination were higher in the eggs laid by older breeders (59-wk-old). Early mortality (0-4 days) was higher in the embryos from young breeders (29-wk-old). A shorter hatch window birth was obtained in the SS incubator, resulting in higher hatchling body weight relative to egg weight, and better hatchling physical quality score. Both types of incubators provide good conditions for embryo development; however, the physical quality of chicks derived from eggs from intermediate-aged breeders (35-wk-old) is better when eggs are incubated in SS incubators.

show abstract

“…Entretanto, o balanço e a retenção de nitrogênio pioraram por unidade de ganho de peso no maior nível de arginina utilizado, semelhante ao obtido por Stringhini et al (2006) em experimento com dietas contendo níveis decrescentes de proteína e níveis constantes de lisina total (1,35%).…”

Section: Resultsunclassified

“…Apesar dessas divergências, informações recentes sobre necessidades nutricionais na fase pré-inicial indicaram valores diferentes dos observados para aves mais velhas, porém, as informações disponíveis são escassas (Penz & Renz, 2003;Stringhini et al, 2003;Rostagno, 2005).…”

Section: Introductionunclassified

Níveis de arginina e lisina digestíveis na dieta de frangos de corte na fase pré-inicial

et al. 2007

Self Cite

View full text Add to dashboard Cite

RESUMO -Avaliaram-se o desempenho, a digestibilidade e retenção de nutrientes e o desenvolvimento de órgãos de frangos de corte na fase pré-inicial (1 a 7 dias de idade) alimentados com dietas contendo diferentes níveis de lisina e arginina digestíveis. Um total de 352 pintos AgRoss machos foram distribuídos em um arranjo fatorial 2 × 3 composto de dois níveis de lisina digestível (1,056 e 1,305%) e três níveis de arginina digestível (1,305; 1,459 e 1,613%), com quatro repetições de 11 aves. O ganho de peso diário não foi afetado pelas dietas, porém, houve efeito quadrático dos níveis de arginina sobre a conversão alimentar de 1 a 7 dias e de 1 a 21 dias de idade e efeito linear sobre o consumo de alimento no período de 1 a 21 dias de idade. O peso relativo do proventrículo + moela reduziu à medida que o nível de arginina digestível aumentou para o nível de 1,305% de lisina digestível aos 14 dias de idade. Os valores do coeficiente de digestibilidade dos nutrientes e retenção de MS e N foram melhores nos menores níveis de lisina digestível. Os níveis de 1,40 a 1,46% de arginina digestível podem ser utilizados em dietas para frangos de corte na fase pré-inicial, mas, à medida que aumenta o conteúdo de lisina da dieta, deve-se manter a relação desse aminoácido com arginina. Palavras-chave: desempenho, desenvolvimento do trato digestório, digestibilidade, nutrição pós-eclosão Digestible arginine and lysine levels in pre-starter broiler dietABSTRACT -The performance, digestibility and retention of nutrients and the development of digestive organs of broiler chicks in pre-starter diet (1 to 7 days old) fed diets with different levels of digestible lysine and arginine. A total of 352 day old AgRoss male chicks was allotted to 2 x 3 factorial arrangement (level of digestible lysine [1.056 and 1.305%] and levels of digestible arginine [1.305, 1.459 and 1.613%] and four replicates of 11 chicks. Daily weight gain was not affected by diets but there was a quadratic effect of arginine levels on feed:gain ratio from 1 to 7 and from 1 to 21 days old and linear effect on feed intake from 1 to 21 days old. As for organs development, it was observed a reduction for the relative weight of proventriculus + gizzard as arginine level increased for the 1.305% digestible lysine level at 14 days of age The digestibility coefficients of nutrients and retention of DM and d N values were better for the low digestible lysine levels. The levels from 1.40 to 1.46 of digestible arginine could be used for pre-starter phase diets of broiler chicks, however as lysine content increase in the diet its relation with arginine should be adjusted.

show abstract

Efeito do peso inicial dos pintos e do período da dieta pré-inicial sobre o desempenho de frangos de corte

Cited by 29 publications

References 7 publications

Digestible Threonine Levels in the Starter Diet of Broilers Derived from Breeders of Different Ages

Digestible Threonine Levels in the Starter Diet of Broilers Derived from Breeders of Different Ages

Effect of Incubator Type and Broiler Breeder Age on Hatchability and Chick Quality

Níveis de arginina e lisina digestíveis na dieta de frangos de corte na fase pré-inicial

Contact Info

Product

Resources

About