Effects of wheat cultivar, metabolizable energy level, and xylanase supplementation to laying hens diet on performance, egg quality traits, and selected blood parameters

Mirzaee, M.; Torki, Mehran; Habibian, Mahmood

doi:10.5424/sjar/2014124-5929

Cited by 6 publications

(8 citation statements)

References 44 publications

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“…In contrast, Mirzaee et al (2014) observed no significant impact of supplemental enzyme on eggshell weight and shell thickness in laying hens fed with wheat-included diets. Moreover, Lázaro et al (2003) showed no significant effect of supplemental enzyme on the shell weight in laying hens fed with diets based on rye, wheat and barley.…”

Section: Egg Quality Traitsmentioning

confidence: 58%

Interactions of dietary wheat cultivars and NSP‐degrading enzyme on productive performance and egg quality traits

Seyedoshohadaei,

Torki,

Yaghoubfar

et al. 2023

Veterinary Medicine & Sci

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ContextThe nutritional value of enzyme‐supplemented wheat‐contained diets can be influenced by interactions between wheat cultivar and exogenous enzyme, which in turn cause various effects on the performance of poultry.AimsThe effects of diets including various wheat cultivars with or without enzyme on productive performance and egg quality characteristics were evaluated.MethodsA total of 270 58‐week‐old Lohmann LSL‐Lite were allocated to 9 experimental dietary groups with 5 replicate cages and 6 birds per each cage. Based on a 4 × 2 factorial arrangement of treatment, nine iso‐caloric and iso‐nitrogenous experimental diets, including four wheat cultivars (Sardari, Azar 2, Pishgam and Sirvan) with and without enzymes plus a corn‐based control diet, were tested in a completely randomized design during an 8‐week trial period.Key resultsFrom weeks 58 to 63 and 63 to 67 of age, the hens fed with Sardari‐included diet showed the lowest feed intake compared to other groups (p < 0.05). Egg production (EP), feed conversion ratio (FCR) and egg mass (EM) were not influenced by the experimental diets. At the age of 62 weeks, the effect of adding enzyme on egg shape index was significant. Moreover, in sampling week 67, increased eggshell weight (%) was detected in enzyme‐supplemented diets compared to diets with no enzyme (10.03 vs. 9.37, respectively). Besides, the shell thickness was the highest in the group fed with Azar 2, and the lowest in the group fed with Sirvan at the age of 67 weeks (p < 0.05). Albumen weights (%) were also significant in some cases. The highest albumen weight was observed in Sirvan‐included diet without enzyme on week 62. Reduced yolk weight was detected in enzyme‐supplemented Pishgam‐included diet on 62 weeks of age (p < 0.05).ConclusionsThe inclusion of the diets of laying hens with the four tested Iranian wheat cultivars has no negative impact on most productive performance and egg quality indices. Moreover, supplementing the wheat‐included diets with non‐starch polysaccharidase enzyme (beta‐endopower) improved eggshell weight on week 67.

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Section: Egg Quality Traitsmentioning

confidence: 58%

Interactions of dietary wheat cultivars and NSP‐degrading enzyme on productive performance and egg quality traits

Seyedoshohadaei,

Torki,

Yaghoubfar

et al. 2023

Veterinary Medicine & Sci

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“…This response can be explained by the higher daily ME intake. Birds are known to consume a certain amount of feed to meet primarily their energy requirement (Bertechini, 2013), and variations in the dietary energy level prompt changes in feed intake, thus influencing the intake of all nutrients (Mirzaee, Torki, & Habibian, 2014).…”

Section: Resultsmentioning

confidence: 99%

Metabolizable energy levels in diets with a fixed nutrient: calorie ratio for free-range broilers

Silva

Nascimento

Kiefer

et al. 2021

Semina: Ciênc. Agrár.

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The present study proposes to examine the effect of dietary levels of metabolizable energy, under a fixed nutrient:calorie ratio, on the production performance; body fat and protein deposition; and carcass characteristics of free-range broilers from 1 to 84 days of age. Nine hundred unsexed chicks were allocated to six treatments in a completely randomized design with six replicates of 25 birds each. Treatments consisted of diets with varying levels of metabolizable energy (2700, 2800, 2900, 3000, 3100 and 3200 Kcal ME/kg of diet) and a fixed proportion of nutrients relative to the energy level according to the nutritional requirements for each rearing phase. Body weight, weight gain, feed intake, feed conversion, production viability, metabolizable energy intake, protein intake, lysine intake, body fat deposition, body protein deposition and carcass characteristics were evaluated. Data were subjected to analysis of variance and, later, to regression analysis. Increasing levels of metabolizable energy, coupled with a fixed nutrient:calorie ratio, reduced feed intake, increased body weight and weight gain, improved feed conversion and did not affect carcass characteristics. In conclusion, adjusting the nutrient supply according to the dietary energy level improves production performance by improving feed conversion, ensuring adequate nutrient intake and preserving fat and protein deposition in the carcass when the metabolizable energy level is raised up to 3200 Kcal/kg in all rearing stages.

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“…Antioxidative, protective against reactive oxygen species, functions of inositol 1,2,3-triphosphate and inositol 1,2,3,6-tetrakisphosphate are well documented (Phillippy & Graf, 1997). Using an enzyme preparation with mostly xylanase activity, Mirzaee et al (2014) reported no change in differential count of white blood cells in 71-week-old Lohmann LSL-Lite laying hens. However, it is not clear why the simultaneous use of phytase and xylanase reduced the percentage of lymphocytes, and as a result produced the highest H/L ratio.…”

Section: Discussionmentioning

confidence: 99%

Potential Enhancing Effects of a Carbohydrase Mixture on Phytase Efficacy in Late-Phase Laying Hens Fed Wheat-Based Diets

Mirzaee¹,

Torki²,

Habibian³

2015

SA J. An. Sci.

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A total of 360 65-week-old Lohmann LSL-Lite laying hens were used in a six-week experiment to examine the potential enhancing effects of a commercial carbohydrase preparation on phytase efficacy. Two cultivars of wheat (Marvdasht and Sardari) were used to formulate basal diets containing 2.2 g or 2.9 g nonphytate phosphorus (NPP)/kg levels. A further eight dietary treatments were formulated by supplementing these diets with a commercial source of phytase individually or together with a carbohydrase preparation, resulting in 12 dietary treatments in a 2 × 2 × 3 factorial arrangement. The production performance and egg quality traits were not affected by treatments. Birds receiving a diet with Marvdasht cultivar and 2.2 g NPP/kg exhibited the highest serum concentration of thyroxine. The lymphocyte and eosinophil counts increased and the heterophil counts and the ratio of heterophils to lymphocytes decreased in birds receiving phytase supplementation compared with those receiving phytase and carbohydrase simultaneously. According to the results, the supplementation of wheat-based diets with enzymes in the late phase of egg production does not affect productive performance of laying hens. However, enzymes may have special effects on bird health.

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Effects of wheat cultivar, metabolizable energy level, and xylanase supplementation to laying hens diet on performance, egg quality traits, and selected blood parameters

Cited by 6 publications

References 44 publications

Interactions of dietary wheat cultivars and NSP‐degrading enzyme on productive performance and egg quality traits

Interactions of dietary wheat cultivars and NSP‐degrading enzyme on productive performance and egg quality traits

Metabolizable energy levels in diets with a fixed nutrient: calorie ratio for free-range broilers

Potential Enhancing Effects of a Carbohydrase Mixture on Phytase Efficacy in Late-Phase Laying Hens Fed Wheat-Based Diets

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