| Autor: |
Macambira, G. M., Rabello, C. B. V., Oliveira, H. S. H., Santos, M. J. B., Silva, D. A., Santos, A. C. F., Ribeiro, A. G., Lins Júnior, O. S., Sousa, L. D. N., Máximo, I. L. C., Navarro, M. V. |
| Zdroj: |
Animal Production Science; 2024, Vol. 64 Issue 15, p1-12, 12p |
| Abstrakt: |
Context: Moringa oleifera leaves present enormous potential as an alternative feedstuff for laying hens. The utilisation of the leaves can be improved by exogenous enzymes owing to the presence of non-starch polysaccharides and phytate. Aims: This study evaluated the influence of Moringa oleifera leaf meal (MOL) in diets supplemented with xylanase and phytase on laying hen performance and egg quality at peak production. Methods: In total, 288 Dekalb White laying hens (32 weeks old) were distributed in a completely randomised design, following a 2 × 4 factorial arrangement (with or without MOL × 4 enzyme supplementations). Each treatment comprised six repetitions, each containing six hens. The control diet was based on ground corn and soybean meal, and the treatment diets were supplemented with 5% MOL, followed by three enzyme additives (xylanase, phytase and a xylanase + phytase blend). Key results: The enzyme supplementation in MOL diets positively influenced egg production (P = 0.012), egg weight (P = 0.021) and egg mass (P = 0.009). The birds offered xylanase-supplemented diets had higher feed intakes (P = 0.015) than did those fed other diets. Moringa oleifera increased the albumen height (P < 0.001) and Haugh unit (P < 0.001), whereas MOL and phytase improved eggshell thickness (P < 0.001) and the candling score (P = 0.049), compared with treatments without phytase supplementation. MOL and enzyme supplementation improved yolk colour intensity (L, A and R parameters) and decreased plasma total cholesterol and LDL cholesterol concentrations. The inclusion of 5% MOL in diets did not impair laying performance. However, when MOL diets were supplemented with exogenous enzymes, there was an increase in egg weight. Conclusions: MOL can be included at 5% in layer diets without affecting performance. When used in combination with xylanase and phytase, they improve performance, intensify yolk colour, and improve shell thickness, candling score, as well as serum biochemical profile. Implications: These findings suggest that the combination of dietary MOL + xylanase + phytase can improve performance and egg quality in laying hens at peak production. The use of alternative foods, as well as additives that improve the use of these foods for birds, is an area of study that is constantly growing owing to the constant search for ingredients that make feed cheaper. Several studies have already used Moringa oleifera as an alternative food in poultry diets; however, studies that combine this food with exogenous enzymes, additives that can improve its use and bring benefits to the animals' health, are still almost non-existent. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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