Influence of Graded Levels of Organic Zinc on Growth Performance and Carcass Traits of Broilers

Rossi, Patricia; Rutz, Fernando; Anciuti, M. A.; Rech, José Luiz; Zauk, N. H. F.

doi:10.1093/japr/16.2.219

Cited by 83 publications

(68 citation statements)

References 15 publications

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“…Our study showed that the Zn, irrespective of source and concentration, did not influence broiler feed intake or body weight, neither the weight and length of leg bones. Rossi et al (2007) did not observe any changes in broiler body weight or weight gain when Zn was added in organic form (0, 15, 30, 60 ppm). Our findings are also in agreement a study showing that the tibial weight of male Ross broilers did not change when the basal diet was supplemented with Zn at 100, 150, or 200 mg·kg -1 as oxide or an organic form (Sahraei et al, 2012).…”

Section: Discussionmentioning

confidence: 71%

Effect of Zinc Level and Source (Zinc Oxide Vs. Zinc Glycine) on Bone Mechanical and Geometric Parameters, and Histomorphology in Male Ross 308 Broiler Chicken

Tomaszewska

Muszyński

Dobrowolski

et al. 2017

Rev. Bras. Cienc. Avic.

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The aim of this study was to evaluate the effect of adding zinc (Zn) mineral supplements from organic (ZnGly) and inorganic (ZnO) sources to growing male Ross 308 chickens on the mechanical, geometric, and histomorphometrical parameters of long bones. A corn-soybean meal basal diet was supplemented with Zn at 50 or 100 mg·kg -1 of a premix, except the control group (0 suppl). The serum concentration of insulin-like growth factor 1 was higher in the ZnGly50 group compared with the control group. Positive influence of Zn on the femur is highlighted when considering the significant increase in parameters such as mean relative wall thickness, and maximum elastic and ultimate strengths after Zn administration. Zinc supplementation did not affect tibial parameters. The histomorphometric analysis showed a positive impact of Zn supplementation (irrespective of source and level) on femoral trabecular thickness. Rapid loss in actual bone volume in tibial metaphyseal trabeculae was observed with ZnGly at 50 mg·kg -1 . In conclusion, this study showed that dietary Zn supplementation positively influences bone mechanical properties, confirming its beneficial effect on the development of the skeletal system and bone tissue of broilers tested for a nutritional-osteoporotic factor. Adverse health effects in trabecular bone as a result of the use of Zn at 50 mg·kg -1 of the premix show that supplementing Zn at the recommended dose (100 mg·kg -1 ) is essential.

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Section: Discussionmentioning

confidence: 71%

Effect of Zinc Level and Source (Zinc Oxide Vs. Zinc Glycine) on Bone Mechanical and Geometric Parameters, and Histomorphology in Male Ross 308 Broiler Chicken

Tomaszewska

Muszyński

Dobrowolski

et al. 2017

Rev. Bras. Cienc. Avic.

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“…The dermis has a papillary and a reticular layer, with the presence of blood vessels and dermal papillae (Figure 2). Rossi et al (2007) observed that broiler skin quality and firmness improved with the addition of organic zinc to the diet, without affecting the performance of the birds. In feet with lesion score 2, all epidermal layers were affected.…”

Section: Footpad Dermatitis In Broilers: Differences Between Strains mentioning

confidence: 96%

Footpad Dermatitis in Broilers: Differences between Strains and Gender

Martins

Mendes

et al. 2016

Rev. Bras. Cienc. Avic.

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Pododermatitis, also known as "bumblefoot", is an inflammatory lesion of the footpad. The objective of this study was to evaluate the influence of genetic strain and sex on the incidence of footpad lesions in broilers. The experiment was carried out at São Paulo State University, using 480 broilers distributed in a completely randomized experimental design in a 2X2 factorial arrangement (2 strains X2 sexes), with four replicates of 30 broilers each, totaling 16 experimental units. Feed intake, weight gain, feed conversion ratio, and livability were evaluated at 21, 35 and 42 days of age; production efficiency factor was determined at the end of the rearing period. On day 42, the footpads of 100 broilers were grossly examined and assigned a lesion score in a 1-3 scale (Almeida Paz & Martins, 2014). Three samples per score within treatment were collected for microscopic evaluation. Analysis of variance was applied and performance parameter means were compared by Tukey's test. Footpad lesion incidence was analyzed by the χ2 test using SAS (version8.2). Ross ® broilers presented higher feed intake during all evaluated periods, and higher weight gain only in the period 1 to 21 days compared with Cobb ® broilers. On the other hand, Cobb ® presented better feed conversion ratio in the periods of 1 to 35 and 1 to 42 days. The incidence of foot pad lesions was statistically different (p<0.05) between strains and sexes, but there were no interactions between these factors. The lesion scores assigned were compatible with the histopathological results, showing that the higher the score, the more severe were the dermal and epidermal lesions.

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“…Furthermore, the carcass yield was not influenced by supplemental Zn above 40 mg/kg diet. Rossi et al [18] also stated that carcass yields were not influenced by providing increasing levels of dietary organic Zn to broilers.…”

Section: Carcass Yield Factorsmentioning

confidence: 98%

Growth Performance, Carcass Yield, and Immune Competence of Broiler Chickens as Influenced by Dietary Supplemental Zinc Sources and Levels

et al. 2013

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This study was conducted to determine the effect of sources and levels of zinc (Zn) on growth performance, carcass characteristics, and immunocompetence of broilers. A 6-week (0-6 weeks of age) feeding trial was conducted as per 3 9 4 factorial design involving three Zn sources (zinc propionate-ZnP, zinc oxide-ZnO and zinc sulfate-ZnS) each with four levels of Zn (40, 60, 80, and 100 mg/kg) during starting (0-3 weeks) and finishing (4-6 weeks) phase in a standard broiler diet. Overall body weight gain, feed intake, feed conversion ratio, and percent Zn retention in broilers from 0 to 6 weeks were not differed significantly due to the interaction of different sources and levels of Zn. Growth traits were non-significant due to the main effect of Zn level. Percent Zn retention was decreased due to increase in Zn levels (L effect, P \ 0.001; Q effect-non-significant) among different groups. The humoral (HA titre to-SRBC) and cellular (foot pad index (FPI) to phytohaemagglutinin-P) immune response did not differ significantly due to main effect of Zn sources and interaction effect of Zn sources and levels. However, HA titre to SRBC was maximum (P\0.05) at 80 mg Zn/kg diet and FPI to PHA-P was maximum (P \ 0.05) at 60 mg Zn/kg diet. The L effect of Zn level was non-significant for HA titre and FPI. The Q effect of Zn level was significant at P \ 0.05 and P \ 0.01 for HA titre and FPI, respectively.

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Influence of Graded Levels of Organic Zinc on Growth Performance and Carcass Traits of Broilers

Cited by 83 publications

References 15 publications

Effect of Zinc Level and Source (Zinc Oxide Vs. Zinc Glycine) on Bone Mechanical and Geometric Parameters, and Histomorphology in Male Ross 308 Broiler Chicken

Effect of Zinc Level and Source (Zinc Oxide Vs. Zinc Glycine) on Bone Mechanical and Geometric Parameters, and Histomorphology in Male Ross 308 Broiler Chicken

Footpad Dermatitis in Broilers: Differences between Strains and Gender

Growth Performance, Carcass Yield, and Immune Competence of Broiler Chickens as Influenced by Dietary Supplemental Zinc Sources and Levels

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