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| Vieira,SL; Almeida,JG; Lima,AR; Conde,ORA; Olmos,AR. |
| Broiler chicks from one incubator hatch within long periods of time, which leads to dehydration and reduction in yolk sac reserves of those chicks that have hatched earlier and potentially impairs early performance. The present research investigated the hatching distribution at intervals of incubation using eggs of different weights within one breeder age or eggs from widely different breeder ages. Eggs from breeders at 27 and 59 weeks of age (54 and 69 g) and from breeders at 40 weeks of age, which were graded as light (58 g) and heavy (73 g), were placed in a commercial incubator. There were a total of 1,184 eggs distributed in four treatments and eight replicates: eggs from 27-week-old breeders (27B), eggs from 59-week-old breeders (59B), light eggs... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeder age; Egg weight; Hatchability. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2005000200002 |
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| Dahlke,F; Ribeiro,AML; Kessler,AM; Lima,AR. |
| Este experimento foi realizado com o objetivo de investigar os efeitos de diferentes granulometrias, expressa em Diâmetro Geométrico Médio (DGM) do milho (0,336mm, 0,585mm, 0,856 mm e 1,12 mm) de dietas fornecidas na forma farelada (FAR) e peletizada (PEL), no desempenho e no rendimento de carcaça e de cortes de frangos de corte de 21 a 42 dias de idade. Dietas FAR, produzidas com DGM de 0,336 mm resultaram em um menor consumo (p<0,001), ganho de peso (p<0,001) e pior conversão alimentar (p<0,001) do que as PEL de mesmo DGM. Os demais DGM não mostraram diferenças entre ração FAR e PEL. Quando avaliada somente a granulometria, observou-se que o aumento no DGM melhorou o ganho de peso linearmente e de forma quadrática o consumo e a conversão... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diâmetro geométrico médio; Milho; Desempenho; Rendimento de carcaça. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2001000300006 |
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| Dahlke,F; Ribeiro,AML; Kessler,AM; Lima,AR; Maiorka,A. |
| The objective of this experiment was to investigate the effects of different particle sizes, expressed as Geometric Mean Diameter (GMD) of corn (0.336mm, 0.585mm, 0.856mm and 1.12mm) of mash and pelleted broiler chicken diets on the weight of the gizzard, duodenum and jejunum+ileum; on the pH of the gizzard and small intestine and on the characteristics of the duodenal mucous layer (number and height of villi and crypt depth) in 42-day-old broilers. The physical form and the particle size of the diet had no significant effect on gizzard and intestine pH (p > 0.05). A greater gizzard weight was seen in the birds receiving pelleted diet and particle size of 0.336mm (p < 0.008). However, for the particle sizes of 0.856 and 1.12 mm, a greater weight was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crypt depth; Geometric mean diameter; Intestine weight; Intestine pH; Villus height. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2003000100008 |
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