Effects of Diets with Graded Levels of Canola Meal on the Growth Performance, Meat Qualities, Relative Organ Weights, and Blood Characteristics of Broiler Chickens

Abstract

KeywordsBroiler chickens, canola meal, growth performance, meat quality. ABSTRACTThis experiment was conducted to evaluate the dietary supplementation of canola meal (CM) on the growth performance, carcass characteristics, antibody titers against Newcastle disease virus and Infectious bronchitis virus, and blood profiles of broiler chickens. In total 600 day-old feather-sexed Ross male broiler chicks were randomly assigned into five treatments with six replicates of 20 birds each for 35 days. Treatments consisted of five experimental diets containing 0 (control), 3, 5, 10, or 15% canola meal (CM). Final body weight (BW) was not affected by the dietary treatments. Daily BW gain (DWG) and feed intake linearly decreased as dietary CM inclusion increased during the starter phase (p<0.0001), but not during the grower and total rearing periods. Chicks fed the diet with 15% CM presented the lowest DWG during the starter phase. Breast meat yield of CM-fed chicks linearly decreased as CM inclusion level increased (p=0.0014). Dietary CM supplementation did not influence organ relative weights, except for the spleen, meat quality, or blood profile. The results suggest that the CM may replace soybean meal (SBM) with no detrimental effects on overall growth performance or physiological responses of broiler chickens. However, it is recommended that supplementing excess amount of CM into broilers' diet should be taken into account in practical diet formulation as it could impair growth performance at early age and lower breast meat yields.

Effects of Protein Source, Whole Wheat and Butyric Acid on Live Performance, Gut Health and Amino Acid Digestibility in Broiler Chickens

“…Poor gut health and reduced digestibility of nutrients (CP and AA) in CM consuming broilers indicate a decreased relative yield of carcass relative to those fed SBM diets, which corresponds to the results of previous research [ 19 , 21 , 22 ]. Breast meat yield is believed to be hyper-sensitive to the amount and composition of dietary amino acids [ 22 ].…”

“…Poor gut health and reduced digestibility of nutrients (CP and AA) in CM consuming broilers indicate a decreased relative yield of carcass relative to those fed SBM diets, which corresponds to the results of previous research [ 19 , 21 , 22 ]. Breast meat yield is believed to be hyper-sensitive to the amount and composition of dietary amino acids [ 22 ]. A reduced digestibility of most AAs, including lysine, methionine, cysteine, threonine, arginine and glutamic acid, in CM fed broilers therefore led to diminished carcass characteristics, especially the breast muscles, because lysine is essential for the growth of the pectoralis major muscle (a breast muscle composed entirely of fast-twitch glycolytic fibers) [ 23 ].…”

Nutritional Impact of Canola Meal on Performance, Blood Constituents and Immune Response of Broilers

“…Feeding CM had no significant effect on HI titer against ND virus, that as the same as the results obtained by Mushtaq et al (2007) and that obtained by An et al (2016). These results are contrary with results obtained by Ahmad et al (2007); who reported that HI antibody titer against ND virus was lowest in diets containing 10% CM, whereas, it was highest in those having 15% CM.…”

“…In this respect, Taraz et al (2006) reached to 38.2, 28.95 and 23.16% CM as maximum levels in starter, grower and finisher diets, respectively; they reported no significant differences in relative spleen weights between all CM groups and the CM free group; that showed disagreement with the present results of broilers fed 90% CM replacement of SBM compared to control, as the starter, grower and finisher diets contained 32.63, 27.67 and 29.89% CM, respectively. In the same vein, An et al (2016) reported no significant differences among relative spleen weights of broilers fed wheat-SBM based diets contained 0, 3, 5, 10 and 15% CM. It is well known that spleen, bursa and thymus are considered a part of the secondary and primary lymphoid organs (H. Lillehoj & E. Lillehoj, 2000) responsible for producing cells that protect the birds from the invaded microorganisms.…”

Effect of a protein concentrate based on poultry by-products on the productive performance of broiler chickens

“…Debido a los constantes aumentos del precio del alimento para animales por contener materias primas importadas como la torta de soya, cuyo precio incrementó durante el año 2018, se generan mayor costo de alimentación de las aves y el precio en granja (MINAGRI, 2018a), afectando tanto a productores como a consumidores. Siendo la proteína uno de los componentes más caros en los alimentos avícolas, diversas investigaciones se centran en la búsqueda de fuentes proteicas de alta calidad de origen animal y vegetal, como el plasma porcino secado por aspersión (Beski et al, 2015), la harina de despojos de aves (Silva et al, 2015), el ensilado seco de salmón (Valenzuela et al, 2015), la harina de plumas hidrolizada (Mandey et al, 2017), la harina de carne (Chávez, 2019) y la harina de canola (An et al, 2016) entre otros, que permiten reducir los costos de alimentación. Entre las fuentes alternativas de proteína disponible se encuentran también los subproductos de camal avícola, constituidos por los residuos de carne, vísceras, sangre, plumas y aves muertas, de alto contenido proteico con aproximadamente 78% de proteína (INASSA, 2010).…”