Recomendación de niveles de lisina digestible para codornices japonesas en periodo de postura

Abstract

<p>Este trabajo fue realizado en la Universidad de los Llanos, con el objetivo de estimar el nivel de lisina digestible para máxima producción de huevos. Se utilizaron 240 codornices japónicas comerciales de 70 días de edad y 159±9 g de peso corporal, distribuidas en un diseño experimental completamente al azar, con cuatro tratamientos, seis repeticiones y 10 aves por repetición, durante 26 semanas. Las aves fueron alojadas en jaulas de alambre galvanizado proporcionando 0,016 m<sup>2</sup>/codorniz, cada jaula estaba dotada de comedero lineal, bebedero automático y bandejas para recolección de heces. Las dietas experimentales fueron granuladas, isoprotéicas e isoenergéticas con cuatro niveles de suplementación (0,00% tratamiento testigo, 0,153%, 0,306% y 0,459%) de L-lisina-HCl (78,5%) que resultó en dietas con 0,916; 1,036; 1,156 y 1,276% de lisina digestible, los resultados fueron sometidos a análisis de varianza y de regresión polinomial. Hubo efecto cuadrático (P<0,01) sobre la producción de huevos (81,44; 84,43; 83,01; 80,72%) y lineal (P<0,01) sobre el consumo diario de lisina (229,2; 257,2; 285,1; 313,5 mg) de los niveles de lisina digestible. Para las variables peso del huevo (10,81; 10,46; 10,41 y 10,55g), consumo diario de ración (25,01; 24,83; 24,71; 24,57g), conversión alimenticia kg de ración/docenas de huevos (0,368; 0,353; 0,357; 0,365) y conversión alimenticia de kg de ración/kg de huevo (2,84; 2,81; 2,86; 2,89) no hubo efectos (P>0,05) de los niveles de lisina. En conclusión, el requerimiento de lisina digestible que maximiza la producción de huevos en codornices japonesas se estimó en 1,079%, con raciones conteniendo 19,18% de proteína bruta.</p>

Digestible lysine requirement for European laying quail

“…The same behavior was observed for the intake of lysine per bird (p < 0.05), indicating an increase of 10.256 grams of lysine per bird for each 0.1% increase in the lysine level, as determined by equation with R 2 = 99.81%, SSR=1.8 and AIC=13.08. Similar results were reported by Ton et al (2011), Ribeiro et al (2013), Nery et al (2015) and Lima et al (2016), who found, for Japanese quail, a linear behavior with precision of 99%, 100%, 98% and 98%, respectively.…”

“…Della-Flora et al (2012) working with European quails, did not find differences between the levels of digestible lysine. The same was reported by Costa et al (2008) and Nery et al (2015) for Japanese quails. Nevertheless, when working with Japanese quails, Lima et al (2016) verified, through the linear model with a precision of 99%, that at each increment of 0.1% of lysine there was an increase of 13.5 g in feed conversion per dozen.…”

“…Ton et al (2011) verified linear behavior with 93% of precision power for feed conversion in European quail. Barreto et al (2006) and Della-Flora et al (2012) found, in European quails, that there was no difference in feed conversion per mass in relation to the different levels of digestible lysine, and the same was found by Costa et al (2008), Ribeiro et al (2013) and Nery et al (2015) for Japanese quails.…”

“…For Japanese quails, Costa et al (2008) verified, through a linear model with precision of 60%, that with each increase of 0.1% of lysine, an increase of 0.5g in the feed intake occurred. Ribeiro et al (2013), Nery et al (2015) and Lima et al (2016) did not verify relationship between feed intake and digestible levels of lysine for Japanese quail. Table 2.…”

“…These results corroborate with those observed by Della-Flora et al (2012), who observed, for European quails, a percentage of laying of 86.65% for an optimal lysine level of 1.1137%, when using the quadratic regression model. Through the use of quadratic regression model, several authors explained the percentage of posture in Japanese quails with variable explanatory power, such as 75.0%, as observed by Lima et al (2016) with the supply of 1.18% lysine in the diet; 92.4% by Nery et al (2015) with 1.08% of lysine; and up to 96.0%, as obtained by Costa et al (2008) when they provided 1.03% of digestible lysine in Japanese quail diets.…”