The Effects of Dietary Protein Level on Laying Performance and Egg Quality in Japanese Quail

Oh, Seung Jin; Kim, Je-Hun; Park, Seung-Jae; Yun, Jeong-Geun; Zheng, Lan; An, Byoung-Ki; Kang, Chang‐Won

doi:10.5536/kjps.2012.39.3.207

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…The lack of significant effects of dietary ND on most blood parameters of laying quails, estimated herein, agrees with those of Oh et al (2012) they observed no significant effect of dietary protein (18, 20, 22 and 24%) on blood levels of glutamic-oxaloacetic transaminase, glutamic-pyruvic transaminase, blood urea nitrogen, albumin, and creatinine of Japanese quail hens. Similarly, Ismail et al (2015) found that feeding the high nutrient density diets (102.5, 105, 107.5 and 110%) had no significant effect on most blood parameters of laying hens.…”

Section: Carcass Measurements Of Quailssupporting

confidence: 91%

Effect of Cage Stocking Density and Dietary Nutrient Density on Productive Performance, Egg Quality and Blood Parameters of Japanese Quail

Rabie

Mansour

Sherif

2023

Journal of Animal and Poultry Production

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This study was undertaken to investigate stocking density (SD) and nutrient density (ND) effects on productive performance, egg quality, carcass characteristics, and blood biochemical parameters of Japanese quails. Two hundred eighty-eight quails were randomly divided to 6 experimental groups (each with 4 replications) and kept at three rates of cage SD (277.8, 208.3 and 166.7 cm 2 /bird). Three of these groups were fed on a normal nutrient density diet and the second three groups were fed on a high nutrient density diet (105% of the recommended nutrient requirements for laying quails) and managed similarly from 7 to 19 weeks of age. Carcass characteristics and most blood parameters, certain criteria of productive performance of quails were not affected by SD and ND. Increasing SD impaired EPR, DFI, and DEM of quails. However, increasing ND improved EPR, DFI and DEM but had no effect on all criteria of egg quality. Most egg quality traits were not affected by SD, while YI was deteriorated and ST improved with increasing SD. There were inconsistent differences in serum levels of MDA and COR, but P level increased due to increasing SD. As ND increased serum LDL-C concentration of quails increased while level of uric acid decreased. The SD by ND interactions insignificantly affected all estimated criteria of quail hens. Conclusively, an optimal SD for laying quails is suggested to be 277.8 cm 2 /hen for normal productive performance, egg quality and blood parameters. Increasing ND can alleviate the negative effects of high SD on laying performance of quails.

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Section: Carcass Measurements Of Quailssupporting

confidence: 91%

Effect of Cage Stocking Density and Dietary Nutrient Density on Productive Performance, Egg Quality and Blood Parameters of Japanese Quail

Rabie

Mansour

Sherif

2023

Journal of Animal and Poultry Production

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show abstract

Effect of dietary protein level on egg production and egg-quality characteristics of Japanese quail (

et al. 2021

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Context Quail production is increasingly emerging as a low-capital, cheap, alternative source for supplementing protein intake among peoples in tropical countries such as Nigeria. Aims To increase animal protein sources, promote their availability to rural people, and reduce the unit cost of protein to the people, the effect of dietary crude protein on feed consumption, egg productivity and egg-quality characteristics of quail in the high-altitude Ekiti area of Nigeria was evaluated. Methods In total, 142 mature Japanese quails, divided into four groups with four replicates per group, were fed with four diets differing in dietary protein concentration with a near-isocaloric maize–groundnut cake–soybean meal-based diets for 10 weeks. Three experimental diets (18%, 22% and 24% crude protein (CP)) were tested and compared with a control 20% CP diet, in a completely randomised design of four replicates per treatment. Each consisted of 10 quails/cage at 5 weeks of age. Parameters measured on each quail included feed intake, egg number and egg-quality characteristics. Data were subjected to general linear model, regression and Duncan multiple-range procedures for means separation by SAS®v9.4 (2013). Key results Increasing dietary protein from 18% to 24% in the diet of experimental quails decreased daily feed intake, hen-day egg production (HDP) and average egg mass (AEM; P < 0.05) during egg lay, whereas egg weight and diameter, egg shell weight, albumen weight, height and percentage, and yolk height increased significantly (P < 0.05). The 18% CP diet produced the highest HDP and AEM responses (P < 0.05). The 20% CP diet produced the highest numerical shell and yolk percentages (P > 0.05). Birds on 22% CP diet consumed the lowest quantity of feed (daily feed intake, P < 0.05) and had the lowest feed conversion ratio (FCR, P > 0.05). Birds on 24% CP diet produced the highest egg weight and diameter, egg shell weight, albumen weight, height and percentage, and yolk height (P < 0.05). Haugh unit values were high and uninfluenced by an increasing dietary protein concentration (P > 0.05). The high and above-threshold environmental temperature–humidity index value of the test station resulted in heat stress during egg production, and was considered major cause of the generally low productivity and low egg-trait values obtained. Conclusions The 18% CP diet produced the highest HDP and AEM, while the 22% CP diet was the most efficiently utilised diet, and 24% CP diet stimulated higher egg-weight and egg-quality traits. Implications Massive quail egg production could be sustained among rural people with the 18% CP diet, with adequate energy level, and without adverse effects on egg quality.

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The Effects of Dietary Protein Level on Laying Performance and Egg Quality in Japanese Quail

Cited by 2 publications

References 18 publications

Effect of Cage Stocking Density and Dietary Nutrient Density on Productive Performance, Egg Quality and Blood Parameters of Japanese Quail

Effect of Cage Stocking Density and Dietary Nutrient Density on Productive Performance, Egg Quality and Blood Parameters of Japanese Quail

Effect of dietary protein level on egg production and egg-quality characteristics of Japanese quail (

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