Animal performance, yield and characteristics of the meat of quail fed diets containing vegetable and mixed glycerin

Abstract

-The objective of this work was to evaluate the effect of the inclusion of vegetable and mixed glycerin in the diet of broiler quail (Coturnix coturnix coturnix) on animal performance, yield of carcass and organs, and physical and sensory characteristics of the meat. A total of 432 quails aged 1-42 days were used in a completely randomized design with a 4×2+1 factorial arrangement (5, 10, 15, and 20% inclusion of vegetable or mixed glycerin, besides one treatment without glycerin) with 4 replicates of 12 birds each. Feed intake, weight gain, feed conversion, yield (carcass, breast, thigh+drumstick, heart, liver, gizzard, and abdominal fat), and physical and sensory characteristics of the meat. The diet containing mixed glycerin resulted in higher feed intake and feed conversion. The yield of carcass, meat cuts, and organs, as well as the sensory characteristics of the meat, did not vary between the treatments. Abdominal fat content and shear strength were higher in birds fed diets containing vegetable glycerin. The tested glycerin and levels do not interfere with weight gain, yield, and sensory quality of the meat. However, weight gain and feed conversion are lower when mixed glycerin is used, although meat tenderness is higher when 15% vegetable glycerin is used.Index terms: Coturnix coturnix coturnix, carcass yield, meat quality, weight gain. Desempenho, rendimento e características da carne de codornas que receberam rações contendo glicerina vegetal e mistaResumo -O objetivo deste trabalho foi avaliar o efeito da inclusão de glicerinas vegetal e mista na dieta de codorna de corte (Coturnix coturnix coturnix) sobre o desempenho, o rendimento de carcaça e de órgãos, e as características físicas e sensoriais da carne. Utilizaram-se 432 codornas com 1 a 42 dias de idade, em delineamento inteiramente casualizado, no arranjo fatorial 4×2+1 (5, 10, 15 e 20% de inclusão de glicerina vegetal ou mista, mais um tratamento sem glicerina), com 4 repetições e 12 aves cada uma. Avaliaram-se o consumo de ração, ganho de peso, conversão alimentar, rendimento (de carcaça, peito, coxa+sobrecoxa, coração, fígado, moela e gordura abdominal) e características físicas e sensoriais da carne. A dieta com glicerina mista proporcionou maior consumo de ração e conversão alimentar. O rendimento de carcaça, cortes, órgãos, bem como as características sensoriais da carne, não variaram entre os tratamentos. Já a gordura abdominal e a força de cisalhamento foram maiores nas aves que consumiram ração contendo glicerina vegetal. Os níveis e as glicerinas testados não interferem no ganho de peso, nem nos rendimentos e na qualidade sensorial da carne. No entanto, há prejuízo no ganho de peso e na conversão alimentar quando se utiliza glicerina mista, embora a maciez da carne seja maior quando se utilizam 15% de glicerina vegetal.Termos para indexação: Coturnix coturnix coturnix, rendimento de carcaça, qualidade da carne, ganho de peso.

Carcass Characteristics and Meat Quality of Betong Chicken Fed with Diets Supplemented with Crude Glycerin

“…These findings are in agreement with the previous studies which have reported that CG inclusion up to 10% had no negative effect on carcass traits ( Sehu et al , 2012 ; Freitas et al , 2017 ) and on internal organs ( Topal and Ozdogan, 2013 ). Similarly, Arif et al (2017) and Farrapo et al (2017) also found that CG did not alter the carcass characteristics and relative organ weight of quail. In contrast, Cerrate et al (2006) reported several adverse effects on carcass yield and internal organs when 10% CG was used.…”

“…Thus, the use of CG for livestock feed is probably the cheapest alternative. Several studies have confirmed that CG could substitute corn by 5 to 10% in the chicken feed without compromising growth performance and carcass yield in broiler chicken ( Cerrate et al , 2006 ; Sehu et al , 2012 ; Topal and Ozdogan, 2013 ; Urgnani et al , 2014 ; Freitas et al , 2017 ; Da Silva et al , 2017 ; Garcia et al , 2018 ; Legawa et al , 2018 ) and meat quail ( Arif et al , 2017 ; Farrapo et al , 2017 ). Although utilization of CG in broiler nutrition is widely reported, limited information is available regarding the effect of CG on meat quality, particularly in indigenous chicken breeds.…”

Does the metabolizable energy influence the performance, carcass characteristics and biochemical parameters of European quails from 28 to 42 days of age?

“…Losing liquid by thawing and cooking was measured according to Farrapo et al (2017) using the equation below.…”

Glicerina como fuente de energía para pollos de engorde en el trópico ecuatoriano

“…En el cuadro 5, se aprecia el comportamiento final de la conversión alimenticia de las aves durante el estudio, los tratamientos fueron estadísticamente iguales por cuanto no se reportan diferencias entre ellos, sin embargo el tratamiento testigo fue en cifras más eficiente T1 (1.71±0.05) comparado con los que incluyeron glicerina en su formulación T2 (1.73±0,03) y T3 (1.75±0.05), se puede mirar con claridad que las menores conversiones corresponden a los animales en cuyo alimento no se añadió glicerina, este comportamiento es similar al anotado por (Farrapo et al, 2017;Legawa et al,2017) los mismo que hacen notar la dependencia de la conversión alimenticia frente al consumo de alimento, por lo que asumen que los animales tratados con glicerina reportan conversiones más altas comparadas con los que no la recibieron porque se sobrevalora el contenido de energía metabolizarle presente en la glicerina frente a la demanda de este nutriente sobre todo en las primeras semanas de vida que los animales están predispuesto al menos a triplicar y doblar su peso.…”