ABSTRACT Two experiments were conducted to evaluate combinations of different storage periods and temperature of hatching eggs of breeder quails in two stages of the production cycle (24 and 43 weeks) on hatchability, quail neonate quality, and Bursa of Fabricius characteristics. In each experiment, a total of 1.050 Japanese quail eggs were incubated in a randomized block design in a factorial arrangement of 2 × 5 × 2, with two breeder ages (24 and 43 weeks), five storage periods (one, […]

The objective of this study was to compare fattening performance, carcass traits, and egg quality of Japanese quails with different feather colors (white, dark brown, golden, and wild-type). In the study, 360 one-day-old quail chicks with 4 different feather colors were used as animal material. Quails were fed ad libitum for 42 days to determine fattening performance and carcass traits. To determine egg traits, 48 hens from each group, in a total of 192, were selected and caged according to […]

The objective of this study was to estimate the digestible lysine requirement of Japanese quails in the egg-laying phase. A total of 336 female Japanese quails (Coturnix coturnix japonica) of average initial age of 207 days were distributed in a completely randomized experimental design, composed of 6 treatments (lysine levels) with 7 replicates and 8 birds per experimental unit, with duration of 84 days. Experimental diets were formulated from a basal diet, with corn and soybean meal, with 2.800 kcal […]

The objective of this study was to determine the chlorine nutritional requirement of Japanese Quails during the laying phase, based on performance and egg quality parameters. A total of 240 Japanese quails were distributed according to a randomized block design, with five treatments and six replicates, with 8 birds each. The experiment lasted 84 days, divided in four cycles of 21 days each. Treatments consisted of a basal diet formulated to meet the nutritional requirements, except for chlorine, and four […]

To determine the relationship of arginine with lysine for Japanese quails during the period of production, an experiment was conducted using 360 subspecies of Japanese quails (Coturnix coturnix japonica) with 162 days of age, distributed in a completely randomized design. Diets were formulated with corn, soybean meal, sorghum and wheat bran containing 20.0% crude protein and 2,800 kcal ME/kg. The basal diet contained suboptimal level of lysine equal to 1% and was supplemented with five levels of L-arginine 99% (0.032; […]

Three experiments with Japanese laying quails were performed aiming to assess the effect of supplementation with minerals in organic form on the egg quality during storage and the deposition of minerals in eggs. The assessments of each experiment were related to one mineral, thus, experiment 1 assessed the supplementation with selenium in 0.35-, 0.70- and 1.05-mg/kg levels of feed; experiment 2, the supplementation with zinc in 50-, 100- and 150-mg/kg levels of feed; and experiment 3, the supplementation of manganese […]

Conduziu-se um experimento com o objetivo de verificar o efeito de níveis de fósforo disponível (Pd) na dieta sobre o desempenho, a qualidade dos ovos, o tecido ósseo e as porcentagens de fósforo (P), cálcio (Ca) e magnésio (Mg) nas excretas produzidas por codornas durante o terço final de postura. Foram utilizadas 300 codornas japonesas com 313 dias de idade, distribuídas em 30 unidades experimentais de dez aves. O delineamento foi inteiramente casualizado, composto de cinco níveis de Pd (0,15; […]

Objetivou-se nesta pesquisa avaliar o desempenho das aves e a qualidade e o enriquecimento de ovos de codornas sob suplementação com vitaminas A, D e E. Foram realizados três experimentos, um para cada vitamina, em delineamentos inteiramente casualizados, com seis repetições e oito aves por parcela, totalizando 192 codornas. O desempenho das aves foi avaliado pelo consumo diário de ração, peso dos ovos, porcentagem de postura e conversão alimentar, por kg e dúzia de ovos. Também foram avaliadas a qualidade […]

Com o objetivo de avaliar o efeito de relações entre metionina mais cistina com lisina para codornas japonesas na fase de postura, 480 aves com idade inicial de 65 dias foram distribuídas em delineamento em blocos casualisados com 6 tratamentos, 10 repetições e 8 aves por unidade experimental. Os tratamentos consistiram de ração basal deficiente em metionina mais cistina (0,65%), com 19,6% de proteína bruta e 2800 kcal de energia metabolizável/kg de ração, suplementada com seis níveis de DL-metionina 98% […]

Avaliaram-se a composição química e o valor energético de farinhas de resíduos de abatedouro para machos de codornas japonesas (Coturnix coturnix japonica). Foram utilizadas 320 codornas machos, com 32 dias de idade, distribuídas em delineamento experimental inteiramente ao acaso, com cinco dietas (uma referência e quatro dietas-teste), cada uma avaliada com oito repetições de oito aves por unidade experimental. As farinhas substituíram 25% da dieta-referência e seus valores de energia metabolizável, assim como os coeficientes de metabolizabilidade, foram determinados pelo […]