Adverse Effects of Dietary Lupine in Broiler Chickens

Abstract

This study describes the adverse effects of dietary lupines in broiler chickens for which lupine seeds (Lupinus angustifolius) in raw, dehulled, or autoclaved forms were used as a replacement for soybean meal (SBM) in practical diets. Test diets contained 35% SBM (control) or raw (40%), autoclaved (40%), or dehulled (35%) lupine seed meal. All diets were isocaloric (3,230 kcal/kg AME) and isonitrogenous (23% crude protein). Each diet was offered ad libitum to a group of 16 (four replicates with four birds per replicate) day-old male broiler chicks for 21 d. Chemical analysis of lupine seeds showed no detectable levels of mycotoxins, and total alkaloid contents were below 0.01%. Decreased food intake and growth rate were the main signs observed in all birds fed lupine-based diets. These adverse effects were observed during the first week and persisted throughout the trial. Acute signs of toxicity were observed in four chicks fed the diet containing raw lupine seed during the first week of exposure. Initial clinical signs included leg weakness, lack of coordination, and torticollis. In later stages, during Weeks 2 and 3, some birds fed lupine-based diets showed signs of muscle paralysis and skeletal deformity. Postmortem examination did not show gross pathological changes associated with the dietary treatments. Liver microsomal cytochrome P-50 content was higher (P < 0.05) in birds fed the raw lupine-based diet (mean 0.56 pmol/mg protein) in comparison with controls (mean 0.25 pmol/mg protein), which indicated a systemic effect. Based on the present results, it can be stated that high levels of some varieties of sweet lupines in broiler diets may cause significant adverse effects manifested as 1) decreased feed intake and growth rate in most of the birds, and 2) specific signs of acute and chronic toxicity in some individuals.

Effect of Enzyme Preparation with Activity Directed Towards Degradation of Non Starch Polysaccharides on Yellow Lupine Seed Based Diet for Young Broilers

“…Rubio et al (1998) found that lupines may also affect the microbiological status in broiler chicken intestines. Decreased performance of young broilers fed a diet with high content of LM was observed by several authors (Brenes et al 1993;Olkowski et al 2001Olkowski et al , 2005Roth-Maier and Paulics 2003;Steenfeldt et al 2003;Diaz et al 2006). …”

Feeding broiler chickens with practical diets containing lupin seeds (<i>L. angustifolius</i> or <i>L. luteus</i>): effects of incorporation level and mannanase supplementation on growth performance, digesta viscosity, microbial fermentation and gut morphology

“…Sometimes results were even more adverse. Olkowski et al (2001) reported that apart from decreased feed intake and growth rate, some chickens fed a diet containing 40% narrow-leafed lupin in the first week of life shown signs of muscle paralysis and skeletal deformity. Despite digesta viscosity not having been measured in the last study, it can be recognized as a major cause of these negative effects.…”

Nutritional value of white lupins (Lupinus albus) for broilers: apparent metabolisable energy, apparent ileal amino acid digestibility and production performance

“…The feeding value of early cultivars of lupins to poultry was poor because of the presence of high concentrations of toxic and bitter alkaloids (Olver and Jonker, 1997;Olkowski et al, 2001). However, plant breeding programmes have paid considerable a Present address: Animal Husbandry Department, Polytechnic of Agriculture, Nusa Tenggara Timur, Indonesia.…”