scholarly journals Implication of feed restriction during growth period on the growth hormone profiles and morphology ovary of quail hen (Coturnix coturnix japonica)

2019 ◽  
Vol 44 (4) ◽  
pp. 415
Author(s):  
R.T. Hertamawati ◽  
E. Soedjarwo ◽  
O. Sjofjan ◽  
S Suyadi
Keyword(s):  
Growth Hormone ◽  
Sexual Maturity ◽  
Growth Period ◽  
Metabolizable Energy ◽  
Coturnix Japonica ◽  
Feed Restriction ◽  
Coturnix Coturnix Japonica ◽  
Coturnix Coturnix ◽  
Ovarian Morphology ◽  
Ad Libitum

The aim of this research was to evaluate the effect of feed restriction on growth hormone profiles and ovarian morphology during the growth period. Three hundred 14-day-old quails were used. The quails were maintained on two feeding restriction programs: two dietary regimes based on metabolizable energy (ME), R1 = 2900 kcal/kg and R2 = 2800 kcal/kg, and 3 quantitative feed restriction diets, P0 = 100% ad libitum; P1= 90% ad libitum and P2 = 80%ad libitum (n=300). Each group (n=50) was processed with five replications, 10 birds in each replicate. The change in growth hormone was determined at 28, 35, 42, and 49 days of age, while ovarian morphology was determined at sexual maturity. The results indicated that feed restriction induced a significant increase in growth hormone and insulin-like growth factor-1 after re-feeding. There was no significant effect caused by the rationing of metabolizable energy. The number of large yellow follicles was not different between quails fed with 100% ad libitum and 90% ad libitum. However, feed restriction significantly increased the number of small yellow follicles. In conclusion, the feed could be restricted to 90% ad libitum with a 2900 kcal/kg ration of ME and fed during the starter period (14 to 42 days of age) without influencing ovarian morphology in quails.

scholarly journals Effect of early feed restriction on reproductive performance in Japanese quail (Coturnix coturnix japonica)

2003 ◽  
Vol 82 (7) ◽  
pp. 1163-1169 ◽  
Author(s):  
SM Hassan ◽  
ME Mady ◽  
AL Cartwright ◽  
HM Sabri ◽  
MS Mobarak
Keyword(s):  
Japanese Quail ◽  
Reproductive Performance ◽  
Coturnix Japonica ◽  
Feed Restriction ◽  
Coturnix Coturnix Japonica ◽  
Coturnix Coturnix

scholarly journals Influence of light intensity on sexual maturity in Japanese quail (Coturnix coturnix japonica).

1989 ◽  
Vol 26 (6) ◽  
pp. 362-368 ◽  
Author(s):  
Shin KOBAYASHI ◽  
Hiroyuki HAMAGUCHI ◽  
Satoru OKAMOTO ◽  
Teruo MATSUO
Keyword(s):  
Light Intensity ◽  
Japanese Quail ◽  
Sexual Maturity ◽  
Coturnix Japonica ◽  
Coturnix Coturnix Japonica ◽  
Coturnix Coturnix

scholarly journals Morfologia do epitélio intestinal de codornas japonesas alimentadas com parede celular da Saccharomyces cerevisiae

2013 ◽  
Vol 43 (12) ◽  
pp. 2221-2227 ◽  
Author(s):  
Marina Jorge de Lemos ◽  
Lígia Fátima Lima Calixto ◽  
Aparecida Alves do Nascimento ◽  
Armando Sales ◽  
Marcos Antônio José dos Santos ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Coturnix Japonica ◽  
Coturnix Coturnix Japonica ◽  
Coturnix Coturnix ◽  
Ad Libitum

Objetivou-se com este trabalho avaliar os benefícios e o melhor nível de inclusão de parede celular de Saccharomyces cerevisiae (PCSC) na dieta sobre a morfologia intestinal de codornas japonesas (Coturnix coturnix japonica) durante a fase de produção. 400 codornas japonesas (42 a 154 dias de idade) foram distribuídas em delineamento inteiramente casualizado, com cinco tratamentos e 10 repetições com oito aves cada. Foram utilizadas cinco dietas com diferentes níveis de parede celular de S. cerevisiae (0, 0,5, 1,0; 1,5; 2,0kg t-1). A dieta foi fornecida ad libitum durante todo o período experimental. As variáveis analisadas foram: altura e largura das vilosidades, relação altura/largura das vilosidades e profundidade da cripta intestinal. Altura, largura e proporção altura/largura das vilosidades intestinais foram influenciados pela inclusão de PCSc na dieta, enquanto que a profundidade das criptas não foi influenciada pela adição de PCSc. A inclusão de parede celular de S. cerevisiae na dieta até 1,7kg t-1 trouxe alterações positivas na morfologia do epitélio intestinal de codornas japonesas (C. c. japonica) na fase de produção.

scholarly journals Effect of egg weight and oviposition time on hatchability and post hatch performance of Japanese quail (Coturnix coturnix japonica)

2020 ◽  
Vol 40 (1) ◽  
pp. 102-110
Author(s):  
L. T. Egbeyale ◽  
H. O. Fatoki ◽  
O. A. Adeyemi
Keyword(s):  
Weight Loss ◽  
Treatment Group ◽  
Factorial Design ◽  
Japanese Quail ◽  
Egg Size ◽  
Coturnix Japonica ◽  
Coturnix Coturnix Japonica ◽  
Egg Weight ◽  
Coturnix Coturnix ◽  
Ad Libitum

A total of three hundred (300) Japanese quail eggs were used to study the effect of oviposition time and egg weight on hatchability and post-hatch performance. The eggs were grouped into two (2) of 150 eggs based on the oviposition time of Morning and Afternoon. The eggs in each group (150) were further sub-grouped based on the egg weights of 8 to10 grams designated as small sized and 10.1 to 12 grams designated as big size in a 2 x 2 factorial design trial of 4 treatments. Each treatment had seventy five (75) eggs each with three replicates. The four treatments groups were; Big Morning, Small Morning, Big Afternoon, Small Afternoon. Each treatment group was replicated three times with each replicates consisting of twenty-five (25) eggs. Hatchability parameters were determined during incubation period of 18 days. The quail chicks were fed ad-libitum and the post- hatch performance was studied for eight (8) weeks. The data generated were subjected to a one-way analysis of variance. Oviposition time and size of the egg significantly (p<0.05) affected the average hatch weight. The effect of interaction of oviposition time and egg size on post-hatch performance did not have any significant (p>0.05) influence. Oviposition time had a positive correlation (p<0.05) with egg weight, egg weight loss, percent egg weight loss and fertility percentage but negatively correlated with average hatch weight and hatchability percentage. Meanwhile egg size had a positive significant (p<0.01) correlation with average hatch weight. It was concluded that eggs ranging between 10.1 to 12 grams will produce higher hatch weight. However, setting of Japanese quail eggs ranging between 8 to 12 grams irrespective of oviposition time could not affect post-hatch performance of the chicks.

scholarly journals Lipocyte hyperplasia and sexual maturation of Japanese quail (Coturnix coturnix japonica)

1986 ◽  
Vol 55 (3) ◽  
pp. 621-630 ◽  
Author(s):  
B. M. Oruwari ◽  
J. A. Cherry ◽  
D. E. Jones ◽  
W. L. Beane
Keyword(s):  
Adipose Tissue ◽  
Japanese Quail ◽  
Sexual Maturity ◽  
Tritiated Thymidine ◽  
Abdominal Fat ◽  
Coturnix Japonica ◽  
Coturnix Coturnix Japonica ◽  
Coturnix Coturnix ◽  
Fat Depots ◽  
Total Dna

1. Hyperplastic growth of adipose tissue in Japanese quail (Coturnix coturnix japonica) was examined in relation to sexual maturity to determine whether fat cell number is fixed in mature individuals of this species.2. Total DNA concentrations in the lipid (lipocyte) and non-lipid (stroma) fractions of collagenase (EC 3. 4. 24. 3)-digested abdominal (retroperitoneal) fat depots were determined on a chronological-age basis from 28 to 240 d of age. The in vivo incorporation of [methyl-3H]thymidine into DNA of both the lipocyte and stroma fractions of abdominal fat from both ad lib. and restricted-fed (75% of ad lib.) females was also examined at ages before and subsequent to sexual maturity.3. In both males and females, significant increases in abdominal fat weights at ages beyond sexual maturity were associated with increased lipocyte DNA. Regardless of the feeding regimen and stage of maturity, substantial radioactivity was recovered from both the stromal and lipocyte fractions of abdominal fat when female quail were examined 24 h after the administration of tritiated thymidine. When examined 5 d post-injection, the majority of the radioactivity was contained in the lipid fraction of collagenase-digested adipose tissue.4. Both the total DNA content of adipose tissue and the incorporation of tritiated thymidine into adipose tissue indicated that lipocyte hyperplasia contributes to postmaturational increases in fat deposition.

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