Abstract
Effects of soybean meal substitution with isolated soya protein in pre-starter diet on immune system and performance of broiler chickens
Highlights
Digestive system, mainly its physiology and morphology, is not fully developed in newly hatched broiler chicks (Jin et al, 1998)
The effects of soybean meal (SBM) substitution with isolated soya protein (ISP) in pre-starter diet on broiler chickens performance are shown in Tables 3 and 4
Feeding pre-starter diet having 20 or 30% SBM substituted with ISP increased (P 0.05) Feed intake (FI) during 1–24 days of age
Summary
Mainly its physiology and morphology, is not fully developed in newly hatched broiler chicks (Jin et al, 1998). Intestinal villus height rapidly increases during the first week of life (Wijtten et al, 2011), and pancreatic and biliary secretion may be insufficient in the first week after hatch, especially to digest proteins (Noy and Sklan, 1997). Due to this, feed is not completely digested in the pre-starter period. Due to positive correlation between seven-day live weight and final weight of broiler chickens (Willemsen et al, 2008), feeding animals highly digestible ingredients can improve an economic efficiency (Sklan and Noy, 2003). The soluble NSPs due to anti-nutritive activities may affect gut physiology, microflora and health of birds
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