Performance, intestinal morphometry, and incubation parameters of broiler chickens submitted to in ovo feeding with different techniques and amino acids
| Autor: | Priscila Michelin Groff-Urayama, Joselaine Bortolanza Padilha, Mariana de Andrade, Mateus Henrique Gorges, Simone Pertile, Adriana di Domenico, Suelen Maria Einsfeld, Emilyn Midori Maeda, Sabrina Endo Takahashi |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Methionine 040301 veterinary sciences Hatching Lysine 0402 animal and dairy science Broiler 04 agricultural and veterinary sciences Biology In ovo 040201 dairy & animal science Incubation period Amino acid 0403 veterinary science chemistry.chemical_compound Animal science Food Animals chemistry Animal Science and Zoology Incubation |
| Zdroj: | Canadian Journal of Animal Science. 99:732-740 |
| ISSN: | 1918-1825 0008-3984 |
| Popis: | The objective of this research was to evaluate techniques, incubation period, and effects of amino acids in ovo feeding. First, 240 hatching eggs were selected and distributed in a 2 × 3 factorial arrangement (two techniques and 3 d). The parameters of incubation, relative weight of gastrointestinal organs, and classification of embryonic mortality were evaluated. In the second stage, 720 hatching eggs were incubated with five treatments: control, methionine (20 and 30 mg), and lysine (20 and 30 mg). These animals were housed during 14 d. The animals were divided with five treatments, nine replicates, and groupings based on sex. Incubation parameters, performance, intestinal morphometry, and relative weight of digestive tract organs were evaluated. The results indicate that the technique using a 45° needle axis passing through the air chamber hinders hatchability. In the organ weighing, there was no difference between the evaluated factors. For intestinal morphometry, there was only a significant difference between the dose factor for the crypt villi and crypt diameter. To conclude, the technique using a 90° angle without passing through the air chamber is safer for the embryos. The inoculation of methionine (20 and 30 mg) obtained data similar to the control group. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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