Comparison of the effects of semi-refined rice oil and soybean oil on meat oxidative stability, carcass yield, metabolism, and performance of broilers

Abstract

Two experiments (EXP 1 and EXP 2) were conducted to compare soybean oil (SO) and semi-refined rice oil (RBO) added to broilers diets. In EXP 1, 400 male Ross x Ross 308 broilers were reared in battery cages, and their performance was evaluated. A metabolism assay was performed. In EXP 2, 1344 broilers from the same strain were reared in floor pens with rice husks litter. In addition to performance, carcass yield and meat oxidative stability were evaluated. In both EXP, birds were distributed in a 2x4 factorial arrangement, with two types of oils (SO or RBO) and four oil inclusion levels (1%, 2.5%, 4%, or 5.5%). Two periods were considered: starter (1 to 21 days of age) and grower (22 to 42 days). In both EXP, oil type had no influence on starter performance. Although treatments promoted similar in weight gain (WG) and feed intake (FI), grower birds fed RBO had better feed conversion (FCR) in EXP 2, but not in EXP1. In both trials, increasing dietary oil levels negatively influenced FI and positively FCR. Weight gain was similar among all treatments in EXP 1, whereas in EXP 2, WG was higher when 4 and 5.5% oil was included in the feed. RBO presented 94% fat metabolizability, and crude energy and metabolizable energy levels of 9.260 and 8.714 kcal/kg, respectively. Carcass yield was not influenced by oil type; however, oil inclusion level negatively affected breast yield. The experimental treatments had no effect on meat oxidative stability. RBO can be used as an alternative to soybean oil in broilers diets

Evaluation of Using Some Untraditional Energy Sources in Broiler Chicken Diets on Performance, Carcass Characteristics and Economic Efficiency: 2- Scrape Crude Corn Oil

“…Concerning the percentage of giblets (liver, heart and gizzard) weights percentage the achieved results coincided with the aforementioned with the lack of significance (P>0.05) among treatments, though the existence of superiority was performed for all SCCO treatments regardless of the supplant level in favor of the control one. In consistent with our findings, several authors found no significant effect on carcass traits of broiler chicks (lara et al, 2006;Moraes et al, 2009;Alizadeh et al, 2012;Pekel et al, 2013) and local chickens (Ali et al, 2014) fed on different types of fat whether from traditional or from untraditional sources.…”

Carcass and Bone Characteristics of Broiler Chickens Fed Different Dietary Fat Sources

“…However, Alizadeh et al (2012), Mohammadreza et al (2012 and Moraes et al (2009) who compared between different oil/fat sources (soybean oil (SO) and semi-refined rice oil (RBO) added to broilers diets to study the effect of different oil/fat sources on broiler performance. Experiment was contained conducted using two types of oils (SO or RBO) and four oil levels (1%, 2.5%, 4%, or 5.5%, respectively).…”

A comparative evaluation on the energetic values and digestibility of fatty acids in rice bran oil and palm oil for broilers

“…However, others reported the ME of PO ranged from 5,302 to 7,231 kcal/kg for broilers ( NRC, 1994 ; CVB, 2021 ), which indicates there is substantial variation of ME in PO across sources. In recent years, rice bran oil ( RBO ) has become more common in commercial diets in Brazil and China ( Moraes et al., 2009 ; Sbardella et al., 2012 ; Su et al., 2015 ), because of increased production of low-fat rice bran ( Punia et al., 2021 ) and reduced price than PO. The ME value of semi-refined RBO was 82.24% of purified SO for weaning pigs ( Sbardella et al., 2012 ), but few studies have evaluated the ME of RBO for broilers.…”