The effects of high-oleic peanuts as an alternative feed ingredient on broiler performance, ileal digestibility, apparent metabolizable energy, and histology of the intestine1

Abstract

Locally grown feed ingredients of high energy and protein content, such as peanuts, maybe economically feasible alternatives to corn and soybean meal in broiler diets. Even though normal-oleic peanuts have been demonstrated to be a viable feed ingredient for poultry, few studies to date have examined the use of high-oleic peanuts (HO PN) as an alternative feed ingredient for broiler chickens. Thus, we aimed to determine the effect of feeding HO PN on broiler performance, nutrient digestibility and intestinal morphology. Three isocaloric, isonitrogenous experimental diets were formulated with 1) dietary inclusion of ~10% coarse-ground whole HO PN; 2) a corn-soybean meal control diet with 5.5% added poultry fat; and 3) a control diet supplemented with 5.5% oleic fatty acid oil. Three-hundred Ross 708 broilers were randomly placed in 10 replicate pens/treatment with of 10 chicks/pen and raised until 42 d. Body weights (BW) and feed intake (FI) were determined weekly, and feed conversion ratio (FCR) was calculated. Jejunum samples were collected at 42 d for histomorphometric analysis. Analysis of variance was performed on all variables using a general linear mixed model in JMP Pro14 (2013). Broilers in the HO PN group had lower (P < 0.05) body weights and higher FCR, than other treatment groups at week 2 and week 6. There were no significant differences in jejunum villi surface area between the treatment groups. However, broilers fed the HO PN diet had greater (P = 0.019) apparent metabolizable energy relative to the other treatment groups, suggesting improved nutrient uptake of dietary fats and/or carbohydrates in the HO PN treatment group. However, additional studies are warranted to further define the nutritional value of HO PN as an alternative poultry feed ingredient.

Effect of dietary incorporation of peanut and linseed meals with or without enzyme mixture on physiological performance of broilers

“…To date, minimal studies examined the effect of PNM, LSM, or their combination with or without enzyme mixture on nutrient digestibility of broilers ( Toomer et al, 2020a , Toomer et al, 2020b ). Feeding on PNM and LSM with or without enzyme mixture did not affect the digestibility coefficients of crude fibre and crude fat in broiler chickens.…”

“…In a study by Rodriguez et al (2001) , the authors reported that dietary inclusion of LSM negatively affected amino acid digestibility. Toomer, Sanders, et al (2020) said that apparent fat and protein digestibility did not alter by dietary incorporation of 10% high-oleic PNM. The authors revealed that treated birds recorded the highest apparent metabolizable energy, suggesting improved nutrient uptake.…”

Effects of full-fat high-oleic soybean meal in layer diets on nutrient digestibility and egg quality parameters of a white laying hen strain

“…Collected ileal digesta and excreta were then oven dried at 70°C for 24 h and ground through a 1-mm screen prior to analysis. Gross energy in the feed and dried excreta samples was measured as discussed in Toomer et al (2020a) using an adiabatic oxygen bomb calorimeter (IKA model C5003onnected to compressed oxygen with NESLAB Refrigerated Re-circulator CFT-25).…”

“…Laurel, PA) following AOAC 990.03 methods, then the total protein in the sample was calculated using Kjeldahl conversion factor of 6.25. Crude fat content was measured gravimetrically after Soxhlet extraction using diethyl ether as discussed in Toomer et al (2020a) .…”

The Effects of Feeding a Whole-in-Shell Peanut-Containing Diet on Layer Performance and the Quality and Chemistry of Eggs Produced

“…Hence, whole unblanched (skin intact) peanuts may serve as a nutrient-rich value-added alternative feed ingredient for animal food production while reducing the production of agricultural waste by-products from the peanut industry. Thus, numerous studies have been conducted to explore the effective utilization of peanuts and/or peanut by-products within the animal feed as value-added feed components [3][4][5][6][7][8][9][10] and to enhance agricultural sustainability.…”