Abstract
We investigated the dietary effects of high-oleic peanuts (HOPN) or oleic fatty acids (OA) on older production hen performance, egg mass and quality, and lipid composition. A total of 99 laying hens were divided between three treatments and fed ad libitum for 8 weeks: (1) Conventional diet; (2) HOPN diet; (3) OA diet. Body weight (BW) was measured at weeks 1 and 8, and feed, egg weights (EW), and egg quality parameters were collected. Data was analyzed by analysis of variance at p < 0.05 significance level. There were no treatment differences in 8 week BW, feed conversion ratio, or average weekly egg quality parameters. The 8 week average EW of eggs from the HOPN group had reduced EW relative to the other treatment groups (p = 0.0004). The 8-week average yolk color score (p < 0.0001) was greater in eggs from the HOPN group relative to the other treatments. Overall, the β-carotene (p < 0.006) and OA content (p < 0.0001) was greater in eggs from the HOPN group, with reduced saturated fats in eggs from the HOPN group relative to the other treatments. These results suggest that HOPN and/or OA may be a useful layer feed ingredient to enrich eggs, while significantly reducing egg size in older production hens.
Highlights
Soybean meal has been utilized globally in poultry diets, with maize providing the primary source of dietary energy [1]
These feed ingredients are often inaccessible to developing countries for poultry production due to high cost and availability of soybean and corn, with the United States, Brazil, and Argentina being the largest producers and exporters of soybeans [1]
The high-oleic peanuts (HOPN) diet contained the highest percentage of oleic fatty acid content of all the diets, followed by the oleic fatty acids (OA) diet, with the control diet having the lowest oleic fatty acid content (p < 0.05; Table 2)
Summary
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. Soybean meal has been utilized globally in poultry diets, with maize providing the primary source of dietary energy [1]. These feed ingredients are often inaccessible to developing countries for poultry production due to high cost and availability of soybean and corn, with the United States, Brazil, and Argentina being the largest producers and exporters of soybeans [1]. Other protein sources like canola meal, peanut meal, fishmeal, and blood meal are utilized
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