Selected controversial topics in avian diagnostic testing

Fudge, Alan M.; Speer, Brian L.

doi:10.1053/saep.2001.22054

Cited by 23 publications

(28 citation statements)

References 11 publications

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“…Poultry diets are commonly supplemented with zinc, because many natural feed ingredients are marginally Zn-deficient (Fudge & Speer, 2001). Therefore, poultry diets require supplementation to ensure adequate intake of trace minerals.…”

Section: Effect Of Zinc Level and Source (Zinc Oxide Vs Zinc Glycinementioning

confidence: 99%

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: Effect Of Zinc Level and Source (Zinc Oxide Vs Zinc Glycinementioning

confidence: 99%

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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show abstract

“…The γ‐globulins are immunoglobulins, and increases are consistent with immune stimulation and antibody response 1. Hypergammaglobulinemia occurs more consistently than does increased β‐globulins concentration in birds with chronic inflammation 3. The large increase in γ‐globulins concentration in cranes in this study (2–5 times control values) produced modest polyclonal peaks that were readily distinguishable from the monoclonal peaks described in myeloma in birds 2.…”

Section: Discussionmentioning

confidence: 46%

“…A more thorough survey of the crane family (which includes an additional 3 genera and 12 species) may be required to substantiate this finding. The SPE method also did not resolve distinct α 1 and α 2 fractions, though these fractions may have limited value in evaluating avian disease 1,3. In this study, long‐term storage did not appear to affect the protein concentrations of 5 of 14 serum samples held >1 yr prior to SPE.…”

Section: Discussionmentioning

confidence: 55%

“…As in mammals, avian α‐ and β‐globulin fractions contain acute phase proteins that increase in concentration with inflammation, infection, trauma, neoplasia, and many other conditions 1,3. Exogenous factors also may be associated with increases in the concentrations of acute phase proteins, such as exposure to chemotherapeutic agents, however, no apparent effect was found in the crane treated with erofloxacin and ketoprofen 16.…”

Section: Discussionmentioning

confidence: 99%

“…Over the past decade, serum protein electrophoresis (SPE) has emerged as a valuable, though often underused, diagnostic tool in avian medicine 1,2. The technique is commonly used to supplement CBC and clinical chemistry results in differentiating acute from chronic disease states, and in the diagnosis of inflammation 3. In avian serum, electrophoresis typically results in 6 protein fractions: prealbumin, albumin, and α 1 , α 2 , β, and γ globulins 4.…”

mentioning

confidence: 99%

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