&lt;b&gt;Productivity of japanese quails in relation to body weight at the end of the rearing phase

Filho, Javer Alves Vieira; Garcia, Edivaldo Antônio; Molino, Andréa de Britto; Santos, Tiago Antônio dos; Paz, Ibiara Correia de Lima Almeida; Baldo, Grace Alessandra de Araújo

doi:10.4025/actascianimsci.v38i2.29858

Cited by 5 publications

(5 citation statements)

References 9 publications

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“…The highly significant difference in body weight between the selected lines is in accordance with the earlier reports ( Vieira Filho et al, 2016 ; Dzuriatmono et al, 2019 ). The mean body weight at seventh week observed in the current study (266.87 g) was higher than the value of 244.10 g by Lofti et al (2012) .…”

Section: Discussionsupporting

confidence: 92%

Production performance of four lines of Japanese quail reared under tropical climatic conditions of Tamil Nadu, India

Arunrao¹,

Kalaiselvi²,

Amutha³

et al. 2023

Front. Genet.

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This research investigated the growth and other production traits of four distinct lines (L1, L2, L3, and L4) of Japanese quail (Cortunix japanoica) kept in the tropical climate of Tamil Nadu, India. The traits related to body weight at different weeks and weight gain were measured in 180 birds (90 males and 90 females) per line up to the fifth week of age, and then 90 birds (females only) from the sixth to the 16th week of age, with egg production and feed efficiency parameters measured in 10 observations per line. The traits were analysed using the General Linear Model procedure, and Tukey’s HSD was used to test for statistical differences (p < 0.05) between the means for subclasses under a specific effect. The results revealed a highly significant difference (p < 0.01) in body weight from hatch to fifth week of age. At 5th week of age, the L3 and L2 did not differ (p > 0.05) based on Tukey test; therefore, both presented the highest values and were statistically significant (p < 0.01) with L4 with a lowest value of 203.62 g. The cumulative fifth week feed conversion ratio showed non-significant difference (p > 0.05) at first and second week, and highly significant difference (p < 0.01) from third to fifth week of age. The age at 50 per cent egg production was 60.2 (L4), 61.4 (L2), 65.1 (L3) and 66.0 (L1) days and the L1 egg production differed significantly (p < 0.01) from L4 line. The highest bodyweight (g) during the laying period (at 15 weeks of age) was observed in L2 (327.08) and L3 (326.54) and differed significantly (p < 0.01) from L1 (309.24) as well as L4 (288.69) lines. The mean egg weight (g) of different lines showed non-significant difference (p > 0.05) at all weeks, except at 11th week of age (p < 0.01). The mean feed consumption (g)/bird/day differed significantly (p < 0.01) from 6th to 16th week of age, except at sixth and eighth week of age, where it was non-significant (p > 0.05). The overall feed efficiency/dozen of eggs (from 6th to 16th weeks) ranged from 1.33 (L1) to 1.98 (L3). The livability from 6 to 16 weeks of age was 100 per cent in all the lines. In order to boost Japanese quail production in the tropics, L3 and L4 may be selected for body weight and egg production, respectively.

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Section: Discussionsupporting

confidence: 92%

Production performance of four lines of Japanese quail reared under tropical climatic conditions of Tamil Nadu, India

Arunrao¹,

Kalaiselvi²,

Amutha³

et al. 2023

Front. Genet.

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“…Indeed, our results are in agreement with the results of Sauveur (1988) who reports that the start of laying in Japanese quail is between 6 and 7 weeks of age. According to Vieria Filho et al (2016), the sexual maturity of Japanese quail can be influenced by genetic factors and body weight, which is why quails of the SF10 group (with 220g of weight) have an earlier sexual maturity in comparison with other groups. However, the addition of sunflower oil 10% in the diet improves the weight gain of quails.…”

Section: Growth and Laying Performancesmentioning

confidence: 99%

Effect of Dietary Sunflower Oil Incorporation on Laying Performances and Egg Quality of Japanese Quail (Coturnix japonica)

Mohamed,

Raouf,

Abdelkader

2024

AAVS

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The addition of oils in animal nutrition improves growth performances and the quality of products obtained as meat, milk and eggs by providing essential fatty acids. In poultry and especially in layers, vegetables oils are used widely to increase energy in food. In this study, we aimed to evaluate the effects of dietary sunflower oil incorporation on laying performances and egg quality of Japanese quail. A basal diet SF0 was formulated to meet the nutritional requirements for laying quails. Two other foods SF5 and SF10 were obtained by the incorporation of 5 and 10% of sunflower oil in the control food SF0. We used a total of 300 females of quail, aged 42 days old. Quails were housed in cages. They were randomly assigned to the three experimental diets (100 Quails per diet). In total, 30 cages (10 cages/ treatment) were used and each cage contained 10 quails. The results showed that the addition of sunflower oil to the feed of quails during the laying period improved the growth performances of quails by increasing the live weight, reducing the feed conversion index, and therefore ensuring early maturity of females. For egg quality, dietary supplementation with 10% sunflower oil affects positively the weight of eggs, yolk, and albumen without any effect on the rate of these later. On the other hand, the laying rate was not affected by the type of diet. However, the addition of sunflower oil can improve the shape index, haugh unit, and the yolk color score. Dietary sunflower oil supplementation at 10% improves the laying performances of quails without any negative effect on the health status of animals. Supplementing the quails' diet with sunflower oil improves egg quality as haugh unit and yolk color score.

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“…In spite of the apparent illogical nature of these findings, a similar relationship was also noted in some former studies. For example, Vieira Filho et al [35] demonstrated that, while laying phase productivity of Japanese quails was considerably decreased when their body weight was less than 140 g at 42 days of age or less than 120 g at 35 days of age, egg production (i.e., the number of eggs laid during the laying period) in light and medium breeds was higher than that of heavy and very heavy breeds. Similar results were also obtained by Lukanov et al [36].…”

Section: Correlation Between Performance Traits and Morphometric Char...mentioning

confidence: 99%

“…Body measurements of quails by days(1,7,14,21,28,35, 42, 49, and 56) of their growth and their productivity indicators (mean value ± SD).…”

mentioning

confidence: 99%

Metabolic Rate and Egg Production in Japanese Quails Can Be Predicted by Assessing Growth Parameters of Laying Hens

Narushin,

Volkova,

Vetokh

et al. 2024

Animals

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The aim of the current study was to assess the female metabolic rate and test the hypothesis that there is a relationship between the egg productivity of Japanese quails from eight breeds and their morphometric, or growth, parameters. Parameters measured were body weight (B), volume (V), and surface area (S), as well as the metabolism level expressed by the ratio S/V. The collected egg performance traits were as follows: the number of eggs produced (N), the average egg weight (W), and the total egg mass (M) (i.e., N multiplied by W). To measure the S and V values, a novel technique was developed that takes into account the similarity of the quail’s body to an ellipsoid. An analysis of the relationships between productivity indicators allowed us to introduce a new index called the metabolic index, B·S/V, based on all three main growth parameters in quails. Using the values of this index, we were then able to judge indirectly the level of quails’ egg productivity. We went on to assess the N, W, and M values, not only depending on the size of the bird’s growth parameters but also according to the degree of their changes during quail growth. These changes were expressed as the slope angles of trend lines describing the growth process data. This approach produced more accurate results for predicting the egg productivity in terms of W and M.

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<b>Productivity of japanese quails in relation to body weight at the end of the rearing phase

Cited by 5 publications

References 9 publications

Production performance of four lines of Japanese quail reared under tropical climatic conditions of Tamil Nadu, India

Production performance of four lines of Japanese quail reared under tropical climatic conditions of Tamil Nadu, India

Effect of Dietary Sunflower Oil Incorporation on Laying Performances and Egg Quality of Japanese Quail (Coturnix japonica)

Metabolic Rate and Egg Production in Japanese Quails Can Be Predicted by Assessing Growth Parameters of Laying Hens

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