Whole canola/pea and whole canola/canola meal blends in diets for broiler chickens 1. Evaluation of steam-pelleting or expansion processing

Abstract

Whole canola/pea and whole canola/canola meal blends in diets for broiler chickens. 1. Evaluation of steam-pelleting or expansion processing Can. J. Anim. Sci. 77: [185][186][187][188][189][190]. Whole canola blended with whole peas (1:1; WCP) or canola meal (3:1; WCC) provide complementary high energy-protein supplements for poultry feeding. Both WPC and WCC blends were fed with or without processing (steam-pelleting or expansion) to broiler chicks in a 14-d feeding trial. Pelleted WCP supported higher body weight gain and feed efficiency than the untreated blend (P < 0.05). Body weight gain and feed efficiency obtained with chicks fed pelleted WCP or WCC were similar to those obtained for the expanded blends (P > 0.05), with notable exception of the expanded WCC which had a lower feeding value. With the pelleted or expanded blends, protein digestibility, N-retention, fat digestibility, and AME N were comparable or improved over the unprocessed blends, again with the exception of the expanded WCC. The processed blends had higher gelatinized starch, and lower protein solubility and myrosinase activity index. Protein solubility was very low for the expanded WCC, which is indicative of excessive heat damage. Although the expanded blends had lower glucosinolate content, this did not result in improved growth performance over the pelleted blends. It was concluded that the nutritional value of pelleted blends were at least equivalent to that of the expanded WCP and WCC for broiler chicks. [185][186][187][188][189][190]. Les graines de colza canola mélangées au pois (CEP) en proportion volumique égale ou au tourteau de canola (CEC) en proportion 3:1 constituent un riche complément énergo-protéique pour l'alimentation de la volaille. Chacun des deux mélanges a été servi, avec ou sans traitement d'agglomération à la vapeur ou d'expansion, à des poulets de chair durant un essai d'alimentation de 14 jours. Le CEP en agglomérés donnait lieu à un GMQ et à un IC meilleur que le mélange non transformé (P < 0,05). Le GMQ et la valorisation des aliments chez les poulets recevant CEP ou CEC sous forme granulés étaient semblables à ceux obtenus avec les mélanges expansés (P > 0,05), à l'exception notable de CEC expansé qui affichait une valeur alimentaire plus faible. Quel que soit le mode de présentation, les deux mélanges étaient comparables ou supérieurs aux mélanges non transformés, aux les plans de la digestibilité des protéines, de la rétention de N, de la digestibilité de la graisse et de AME N , à l'exception encore du CEC expansé. Les mélanges transformés contenaient plus d'amidon gélatinisé; leurs protéines étaient moins solubles et ils avaient un indice d'activité myrosinase plus bas. La solubilité des protéines était particulièrement basse dans le CEC expansé, signe révélateur d'une altération thermique excessive. Bien que les mélanges expansés contenaient moins de glucosinolates, la croissance des poulets n'en n'a pas pour autant été améliorée par rapport aux mélanges sous forme agglomérée. Il ressort de ces observa...

Whole canola/pea and whole canola/canola meal blends in diets for broiler chickens 2. Determination of optimal inclusion levels

“…Par ailleurs le taux global de mortalité baissait avec chaque tranche d'accroissement du niveau d'inclusion (P < 0,07) de CEP de CEC (P < 0,03). Bien que les auteurs ne proposent pas de restrictions nettes quant aux taux d'inclusion d'un mélange ou de l'autre dans l'aliment, le faible niveau d'ingestion observé chez les poulets consommant 15 % de CEC suggère de limiter à 10 % le taux d'inclusion de ce mélange.Mots clés: Graine de colza canola, tourteau de canola, pois, poulets de chair Whole canola/pea (containing 50% whole canola and 50% peas) and whole canola/canola meal (containing 75% whole canola and 25% canola meal) blends are alternative feed ingredients for broiler chicks (Fasina et al 1997). The high oil content of whole canola seed (approximately 40%) is valued for feed as an energy (4450 kcal kg -1 ) (Summers 1974) and essential fatty acid source.…”

“…Peas are suitable because of their complementarity in amino acid composition and canola meal is a second alternative which results in a higher protein blend (Fasina et al 1997).…”

“…The high oil content of whole canola seed (approximately 40%) is valued for feed as an energy (4450 kcal kg -1 ) (Summers 1974) and essential fatty acid source. Handling difficulties encountered with the high oil content can be managed by providing whole canola as a blend (Fasina et al 1997) with peas (WCP; 1:1 wt/wt) or canola meal (WCC; 3:1 wt/wt). Peas are suitable because of their complementarity in amino acid composition and canola meal is a second alternative which results in a higher protein blend (Fasina et al 1997).…”

“…Handling difficulties encountered with the high oil content can be managed by providing whole canola as a blend (Fasina et al 1997) with peas (WCP; 1:1 wt/wt) or canola meal (WCC; 3:1 wt/wt). Peas are suitable because of their complementarity in amino acid composition and canola meal is a second alternative which results in a higher protein blend (Fasina et al 1997).Two concerns in providing canola for feed are sufficient disruption of the seed for effective oil release (Bell and Keith 1986; Habil et al 1992), and the antinutritional effects of the glucosinolate/myrosinase complex. Passing canola seed as WCP or WCC through a pelleter improved fat digestion over the milled blends (Fasina et al 1997), but was without effect on the glucosinolate content (aliphatic only; Fasina et al 1997).…”

“…Mots clés: Graine de colza canola, tourteau de canola, pois, poulets de chair Whole canola/pea (containing 50% whole canola and 50% peas) and whole canola/canola meal (containing 75% whole canola and 25% canola meal) blends are alternative feed ingredients for broiler chicks (Fasina et al 1997). The high oil content of whole canola seed (approximately 40%) is valued for feed as an energy (4450 kcal kg -1 ) (Summers 1974) and essential fatty acid source.…”