Vii. - Mesure De La Lysine Libre Du Muscle Chez Le Poulet

Larbier, M.; Guillaume, J.; Calet, C.

doi:10.1051/animres:19710507

Cited by 5 publications

(2 citation statements)

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“…The drying process can occur on the field but is commonly performed by artificial means. Grain drying temperatures used in different countries could reach more than 100°C ( Larbier et al., 1971 ; Kaczmarek et al., 2014a ; Li et al., 2014 ) to reduce the energy consumption of grain dryers ( Barrier-Guillot et al., 1993 ). Nevertheless, the use of high temperatures to dry the grain may induce the formation of new chemical bonds within and between substrates that are resistant to digestive enzymes ( Larbier et al., 1971 ; Iji et al., 2003 ; Bhuiyan et al., 2010 ).…”

Section: Introductionmentioning

confidence: 99%

“…Grain drying temperatures used in different countries could reach more than 100°C ( Larbier et al., 1971 ; Kaczmarek et al., 2014a ; Li et al., 2014 ) to reduce the energy consumption of grain dryers ( Barrier-Guillot et al., 1993 ). Nevertheless, the use of high temperatures to dry the grain may induce the formation of new chemical bonds within and between substrates that are resistant to digestive enzymes ( Larbier et al., 1971 ; Iji et al., 2003 ; Bhuiyan et al., 2010 ). These changes include increments in surface area to mass ratio, increase of protein cross-linking on starch granules surface after grain fractionation, modification of the crystallinity of starch granules, and probably unfolding of amylose and amylopectin clusters.…”

Section: Introductionmentioning

confidence: 99%

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Corn kernel hardness, drying temperature and amylase supplementation affect live performance and nutrient utilization of broilers

et al. 2021

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Drying temperature ( DT ) of corn can influence its nutritional quality, but whether this is influenced by endosperm hardness is not clear. Two parallel experiments were conducted to investigate the effects of 2 yellow dent corn hybrids with average and hard kernel hardness, dried at 3 temperatures (35, 80, and 120°C), and 2 supplementation levels of an exogenous amylase (0, 133 g/ton of feed) on live performance, starch and protein digestibility, and energy utilization of Ross 708 male broilers. Twelve dietary treatments consisting of a 2 × 3 × 2 factorial arrangement were evaluated using 3-way ANOVA in a randomized complete block design. In Experiment 1, a total of 1,920 male-chicks were randomly allocated to 96 floor pens, whereas 480 day-old chicks were distributed among 96 cages for Experiment 2. At 40 d, interaction effects ( P < 0.05) were detected on BWG, FCR, and flock uniformity. Supplementation with exogenous amylase resulted in heavier broilers, better FCR and flock uniformity, only in the diets based on corn dried at 35°C. Additionally, interaction effects were observed on FCR due to kernel hardness and DT ( P < 0.01), kernel hardness and amylase supplementation ( P < 0.001), and DT and amylase supplementation ( P < 0.05). Exogenous amylase addition to the diets based on corn with an average hardness improved FCR up to 2 points (1.49 vs. 1.51 g:g) whereas there was no effect of amylase on FCR of broilers fed diets based on corn with hard endosperm. Total tract retention of starch was increased ( P < 0.05) in broilers fed diets based on corn with average kernel hardness compared to hard kernel. Corn dried at 80 and 120°C had up to 1.21% points less starch total tract retention than the one dried at 35°C. Supplementing alpha-amylase resulted in beneficial effects for broiler live performance, energy utilization, and starch total tract digestibility results. Treatment effects on starch characteristics were explored. Corn endosperm hardness, DT and exogenous amylase can influence the live performance of broilers. However, these factors are not independent and so must be manipulated strategically to improve broiler performance.

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