Effect of photoperiod on body weight gain, and daily energy intake and energy expenditure in Japanese quail (Coturnix c. Japonica)

Boon, Polly

doi:10.1016/s0031-9384(00)00257-2

Cited by 39 publications

(31 citation statements)

References 39 publications

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“…The results of growth and slaughter traits observed in the present study, comparing meat line and egg line (F 0 generation), agree with the findings of Boon et al (2000) and Maiorano et al (2009), who reported significant differences in BW gain, carcass weight, and carcass yield between fast growing Japanese quails bred for meat production (broilers) and normal growing ones bred for egg production (layers): broilers grew faster than layers. The carcass yield values found in the present study are higher (+7.72% and +2.54% for meat and egg type, respectively) than those found in quails of 35 d old (Maiorano et al, 2009) and in quails of 45 d old (Caron et al, 1990); these latter authors reported a lighter increase in carcass yield with an increase in mean BW of Japanese quails.…”

Section: Performance and Carcass Traitssupporting

confidence: 92%

Growth performance, meat quality traits, and genetic mapping of quantitative trait loci in 3 generations of Japanese quail populations (Coturnix japonica)

et al. 2014

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The current research was conducted to compare growth, carcass traits, pH, intramuscular collagen (IMC) properties, and genetic bases of IMC and carcasses (breast-muscle weight) of different lines and generations of adult males and females of Japanese quail (Coturnix japonica). Forty-four quails (generation F0), 22 Pharaoh (F-33) meat-type males and 22 Standard (S-22) laying-type females, were crossed to produce the F1 hybrids generation. The F2 generation was created by mating one F1 male with one F1 female, full siblings. The birds, randomly chosen from F0 (22 males and 22 females), F1 (22 males and 22 females), and F2 (84 males and 152 females) were raised to 20 wk of age in collective cages. Quails were fed ad libitum commercial diets. At slaughter, all birds were individually weighed (after a fasting period of 12 h) and dressing yield (without giblets) was calculated. The carcasses were then dissected. Genomic DNA was extracted from all of the blood, and 30 microsatellite markers located on 2 quail chromosomes were genotyped. The F -: 33 quails had higher in vivo and postmortem performances and a higher abdominal fat percentage than those of the egg line. Meat from S -: 22 quails had a slower collagen maturation (hydroxylysylpyridinoline crosslink/collagen) and a higher ultimate pH. The F1 and F2 generations showed an evident sexual dimorphism, and an additional effect could be due to hybrid heterosis evident in F2. Meat from quails of F1 and F2 generations had a lower IMC amount with a higher degree of collagen maturation compared with parental lines. Two statistically significant QTL have been detected on quail chromosome 2 (CJA02): a QTL with an additive effect (0.50) for IMC in the marker bracket GUJ0037 and GUJ0093; a second QTL with additive (1.32) and dominant (1.91) effects for breast-muscle weight in the marker bracket GUJ0084 and GUJ0073. To our knowledge, this is the first report of a QTL associated with breast-muscle weight and IMC in quail and poultry species, respectively.

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Section: Performance and Carcass Traitssupporting

confidence: 92%

Growth performance, meat quality traits, and genetic mapping of quantitative trait loci in 3 generations of Japanese quail populations (Coturnix japonica)

et al. 2014

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“…Also, light stimulate increase secretion of metabolic hormones (T 3 , T 4 , insulin, GH and IGF-1). All these hormones shared in development and enhancing productive and reproductive functions of domestic birds (Boon et al, 2000;Mateescu and Thonney, 2005). Our results showed that serum levels of T 3 decreased linearly with increasing light intensity throughout entire the experimental period in females and at 18 week old in males.…”

Section: Discussionsupporting

confidence: 49%

Effect of Artificial and Natural Day Light Intensities on some Behavioral Activities, Plumage Conditions, Productive and Physiological Changes for Japanese Quail

Khalil¹,

Hanafy²,

Hamdy³

2015

Asian J. of Poultry Science

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This study was designed to evaluate the effects of different artificial light intensity; 10, 50, 250, 500 lux and natural day light (NDL, average 375 lux) from 3-18 week of age on behavioral activities, plumage conditions, productive and physiological traits for grower and layer of Japanese quail. A total of 270 Japanese quails chicks (3 week old) were randomly assigned to five treatment groups according to different light intensities. The results showed that the birds subjected at NDL and 250 lux spent significantly more time standing than those recorded in 50 and 500 lux groups. Also, birds kept at 500 lux spent significantly more time walking compared with other groups. The lowest plumage deterioration was detected in birds kept under NDL compared with other experimental groups. The heavier body weight (p#0.05) at 6 weeks and weight gain from 3-6 weeks were detected for birds reared at NDL and 250 lux compared with 500 lux and did not significant with the rest of the experimental groups. While, Hen Day Egg Production (HDEP) and Total Egg Mass (TEM) were linearly increased beginning of 50 lux with increasing light intensity. Fertility percentage was significantly higher in 250 lux group than in 50 lux and was not significant with the other groups. Hatchability percentage was significantly decreased in 10 lux group compared with the other groups. Serum level of T 3 was decreased linearly with increasing light intensity. Birds kept at 500 lux had reduced overall number of Ovarian Yellow Follicle (OYF), relative weight of ovaries and testes and cloacal gland area compared with the other groups. From our results, it could be concluded that neither high light intensity (500 lux) nor low light intensity (10 lux) had a positive effect on most traits. Therefore, to maximize productive, reproductive parameters and increase revenue economic may be by using moderate artificial light intensity if we used closed-side housing system or NDL if we used open side housing system for production of Japanese quail.

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“…Baraldi-Artoni et al also found elevated and maximum spermatogenic activity in fall-winter (shortday period) and at the beginning of spring, respectively and lower activity during spring and summer (long-day periods) with minimum values at the end of summer. Boon et al (2000) and Mills et al (1997) found that in Japanese quail sexual development is depend on the length of the daily light period: long photoperiods stimulate sexual maturation, while short photoperiods inhibit or delay sexual maturation. They found increased testicular weight and volume in long day period but in contrast, growth under or transfer of sexually developed birds to short days was found regression of gonadal development and function.…”

Section: Discussionmentioning

confidence: 99%

Histological and Morphometric Analysis of Testes of Adult Quail (Coturnix coturnix japonica) of Bangladesh

2015

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SUMMARY:A histological and morphometric study was conducted to evaluate the seasonal testicular variations in the adult Japanese quail (Coturnix coturnix japonica) in Bangladesh. The weight of birds and testes, volume, length, circumference, seminiferous tubule diameter, circumference and height of germinal epithelium of testes were measured. Sections of testes obtained from studied birds were stained with H&E and images were taken by J software. Weight and volume of paired testes of quails significantly heavier (P<0.05) in long day period of summer and rainy season (March -September) than the short day period of autumn and winter (OctoberFebruary). Seasons had no significant effect on live weight gain of quails. The weight and diameter of testes or height of the germinal epithelium of the seminiferous tubule were positively correlated (r=0.84; r=0.88). Spermatogenic activity was pronounced during summer and rainy season than that of autumn and winter (P<0.05).

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Effect of photoperiod on body weight gain, and daily energy intake and energy expenditure in Japanese quail (Coturnix c. Japonica)

Cited by 39 publications

References 39 publications

Growth performance, meat quality traits, and genetic mapping of quantitative trait loci in 3 generations of Japanese quail populations (Coturnix japonica)

Growth performance, meat quality traits, and genetic mapping of quantitative trait loci in 3 generations of Japanese quail populations (Coturnix japonica)

Effect of Artificial and Natural Day Light Intensities on some Behavioral Activities, Plumage Conditions, Productive and Physiological Changes for Japanese Quail

Histological and Morphometric Analysis of Testes of Adult Quail (Coturnix coturnix japonica) of Bangladesh

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