Bayesian estimation of genetic parameters for individual feed conversion and body weight gain in meat quail

Caetano, Giovani da Costa; Mota, Rodrigo Reis; Silva, Delvan Alves da; Oliveira, Hinayah Rojas de; Viana, José Marcelo Soriano; Siqueira, Otávio Henrique Gomes Barbosa Dias de; Freitas, P.H.F.; Silva, Fabyano Fonseca e

doi:10.1016/j.livsci.2017.04.011

Cited by 9 publications

(3 citation statements)

References 7 publications

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“…The highest genetic correlation was estimated between BWG2-4 and BWG0-6 (0.72) and the lowest was 0.12 for earlier ages (between BWG0-2 and BWG2-4). Caetano et al, (2017) reported that the estimate of h 2 for BWG0-3 weeks in a meat-type quail population was 0.15. Also, in the study of Mohammadi-Tighsiah et al (2018) the estimates of h 2 for BWG0-5 weeks and BWG15-20 weeks were 0.08 and 0.10, respectively, which were lower than the present estimates in different periods.…”

Section: Resultsmentioning

confidence: 99%

Genetic evaluation and selection correlated response of growth traits in Japanese quail

El-Attrouny¹,

Manaa²,

Ramadan³

2020

SA J. An. Sci.

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Objectives of the current study were to i) investigate effects of selection for bodyweight at four weeks old on bodyweight (BW) and bodyweight gain (BWG) across four generations; ii) estimate correlated response to selection for BW and BWG at different ages; and iii) document best linear unbiased prediction (BLUP) of genetic trends for BW and BWG across four generations of selection. A total of 3540 chicks from 444 sires and 885 dams were used to estimate heritabilities, and genetic and phenotypic correlations for growth traits, including BW at 0, 2, 4, and 6 weeks, and BWG between 0 and 2, 2 and 4, 4 and 6, and 0 and 6 weeks. The selection effects, correlated responses and genetic trend for BW and BWG across generations were quantified by applying the animal model. Estimates of heritability for BW and BWG ranged from 0.22 to 0.42 and from 0.18 to 0.23, respectively. Ranges of genetic and phenotypic correlations for BW varied from 0.31 to 0.92 and 0.05 to 0.65, respectively. Moreover, estimates of genetic and phenotypic correlations for BWG at different ages were from 0.12 to 0.72 and 0.17 to 0.60, respectively. Bodyweight and BWG estimates after four generations of selection were significantly higher than those of the base generation. Moreover, contrasts of generation means were significant across the four generations. The genetic trends across the generations clarified that BLUP estimates for BW and BWG gradually increased with the advance of generations until the fourth generation. Keywords: best linear unbiased prediction, bodyweight, heritability, selection, genetic trend

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Section: Resultsmentioning

confidence: 99%

Genetic evaluation and selection correlated response of growth traits in Japanese quail

El-Attrouny¹,

Manaa²,

Ramadan³

2020

SA J. An. Sci.

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“…Many studies prove that organic acids in animal nutrition contribute to better feed conversion and more intensive growth through the improved digestibility and nutrients intake [8][9][10]. Besides, acidifiers have an antioxidant and neurotrophic effect.…”

Section: Introductionmentioning

confidence: 99%

Effect of compound feed acidification on the body weight gain of quails on mini-farms

2020

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The article presents the study results on the fattening effectiveness of Texas Broiler quails using the formulated feed with “B.I.O. Acid Ultra” acidifier. Space and layout design of the mini-farm allowed to house 1000 head of the main flock and up to 300 young birds. The inside climate system of the mini-farm maintained the temperature in the range of 18 °C -20 °C and 75% humidity. In the study, 250 head of daily chicks were randomly selected and divided into 5 groups of 50 head each – one control group and four experimental ones. The study lasted for 8 weeks, i.e. the meat quail fattening period. The addition of the acidifier to the diet in the amount of 0.23% was found to result in 9.0% increase in the bodyweight of the 8-week old quails. The average daily weight increments also increased during the entire fattening period. The use of the acidifier reduced the feed conversion ratio by 4.1% – 6.79 versus 7.1 in the control group. However, the effect of different acidifiers on the effectiveness of quail fattening and the organoleptic and other quality indicators of the quail meat requires further comparative inquiry.

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“…The main part (about 70%) of total cost in livestock production is feed (Caetano et al, 2017), with the protein being the most expensive diet component. One possible strategy to optimize breeding programmes ABSTRACT.…”

Section: Introductionmentioning

confidence: 99%

Genotype and protein level interaction in growth traits of meat-type quail through reaction norm models

Caetano¹,

Silva²,

Calderano³

et al. 2017

J. Anim. Feed Sci.

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Bayesian estimation of genetic parameters for individual feed conversion and body weight gain in meat quail

Cited by 9 publications

References 7 publications

Genetic evaluation and selection correlated response of growth traits in Japanese quail

Genetic evaluation and selection correlated response of growth traits in Japanese quail

Effect of compound feed acidification on the body weight gain of quails on mini-farms

Genotype and protein level interaction in growth traits of meat-type quail through reaction norm models

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