Relationship between egg weight, hatching weight and subsequent body weight in the Japanese quail

Chimezie, V.; Ademola, A. A.; Alli, O. I.; Jubril, A. E.; Josiah, B. O.

doi:10.51791/njap.v47i1.174

Cited by 2 publications

(1 citation statement)

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“…Regarding residual yolk sac weight, chicks from eggs stored for 3.5, 6.5, and 9.5 days, pre-heated or not, showed significantly lower results than the control group (p<0.05). The birth weight of Japanese quail is directly linked to egg weight (Grzegrzółka & Gruszczyńska 2019;Chimezie et al, 2020). Thus, the lower weight values of newly hatched chicks obtained in this study are attributed to the lower egg weight.…”

Section: A-bmentioning

confidence: 49%

Effects of short heating periods during egg storage on quail embryonic development, incubation performance, chick quality, and chick performance up to 35 days

Oliveira,

Silva,

Barbosa

et al. 2024

Sem. Ci. Agr.

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This study investigated the effects of pre-heating fertile Japanese quail eggs during storage on embryonic development, incubation performance, hatched chick quality, and chick performance up to 35 days of age. The experiment was laid out in a completely randomized design in a 3 × 2 + 1 factorial arrangement, totaling seven treatments. These treatments included three storage periods (3.5, 6.5, and 9.5 days) and two pre-heating periods (0 and 4 h at 37.5°C and 60% RH). Pre-heating was conducted on the third day of egg storage inside the incubator machine, with the control treatment involving the storage of fertile eggs for 12 h without pre-heating. Extended egg storage for more than six days led to an increase in the percentages of yolk and shell, elevated albumen pH, reduced albumen percentage, diminished hatchability rate, and an increased embryonic mortality rate. Pre-heating the eggs resulted in a reduction in the weight, length, and amount of residual yolk sac of the newly hatched chick. No significant effects of pre-heating fertile Japanese quail eggs during storage were observed on the studied variables. Therefore, the protocol involving a 4-h pre-heating at 37.5 ºC and 60% relative humidity during the storage period does not yield improvements in incubation rates or chick quality in Japanese quail. Further studies are warranted to determine the optimal protocol for pre-heating Japanese quail eggs.

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Section: A-bmentioning

confidence: 49%

Effects of short heating periods during egg storage on quail embryonic development, incubation performance, chick quality, and chick performance up to 35 days

Oliveira,

Silva,

Barbosa

et al. 2024

Sem. Ci. Agr.

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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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Relationship between egg weight, hatching weight and subsequent body weight in the Japanese quail

Cited by 2 publications

References 1 publication

Effects of short heating periods during egg storage on quail embryonic development, incubation performance, chick quality, and chick performance up to 35 days

Effects of short heating periods during egg storage on quail embryonic development, incubation performance, chick quality, and chick performance up to 35 days

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

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