Effects of calcium soap of rice bran oil fatty acids supplementation alone and with DL‐α‐tocopherol acetate in lamb diets on performance, digestibility, ruminal parameters and meat quality

Abstract

Thirty-six Malpura lambs (28 day old and 6.7 ± 0.25 kg BW) were distributed equally in three groups having six males and six female. They were ad libitum fed individually three different experimental diets containing calcium soap of fatty acids (CA-FA) at 0 (T1 ) and 40 (T2 and T3 ) g/kg concentrate up to six months of age. Animals in T3 were supplemented additionally with 40 mg DL-α-tocopherol acetate/kg of concentrate. The roughage moiety included ad libitum dry Prosopis cineraria and fresh Azadirachata indica leaves. All the lambs were allowed to suckle from their dam up to weaning (90 day of age). Supplementation of Ca-FA improved weight gain and feed conversion ratio during both pre- (28-90 days) and post-weaning (91-180 days) phases; however, no effect of DL-α-tocopherol was observed. Metabolic parameters during post-weaning phase revealed non-significant effect on digestibility but improved nitrogen balance in the test groups. The effect on biochemical attributes did not show any significant alteration in ruminal parameters, blood biochemicals and urinary purine derivatives. Carcass traits revealed higher (p < 0.05) dressing yield and loin eye area with Ca-FA supplementation. The value of thiobarbituric reactive substances for nuggets prepared from frozen carcasses revealed significant (p < 0.05) reduction in T3 compared to the other dietary groups. Fatty acid profile of adipose tissue revealed higher (p < 0.001) 9-octadecanoic, 9-12-octadecadienoic, polyunsaturated fatty acids (PUFA), higher ratio of PUFA/saturated fatty acids (SFA), ω-6/ω-3 and lower SFA in Ca-FA-supplemented groups. It is concluded that supplementation of 40 g/kg calcium soap prepared from industrial grade rice bran oil in lamb ration provided additional energy intake, improved N utilization, gain and feed conversion ratio besides improving dressing yield and meat quality with CLA enriched fatty acid profile. DL-α-tocopherol acetate when supplemented at 40 mg/kg feed reduced lipid oxidation of meat products thus improving its keeping quality.

Effect of probiotic supplementation on growth performance, nutrient utilization and carcass characteristics of growing Chinchilla rabbits

“…Hot carcasses were chilled at 4°C for 24 h to arrive at chilled carcass weight. A sample of Longissimus dorsi muscle was taken for estimating nutrient composition (AOAC 2000) and fatty acid profile (Bhatt et al 2015). Briefly, the meat samples are homogenized and processed employing the alkaline hydrolysis method (Murrieta et al 2003) to obtain fatty acid methyl ester, which were injected into gas chromatograph (DANI Master GC, Series 100922002, Italy) in fused silica capillary column (SPTM-2560, 100 m 9 0.25 mm 9 0.2 lm thickness) fitted to a PTV injector and FID.…”

Desempeño y calidad de carne de bovinos en confinamiento alimentados con diferentes niveles de subproductos agrícolas

“…Los ácidos grasos saturados son ácidos originados principalmente por el metabolismo de bacterias y levaduras presentes en el ambiente ruminal (31) y se manifiestan en la leche y carne. Cuando el animal es alimentado con una mayor cantidad de fibra las condiciones ruminales, principalmente el pH, van a ser propicio para producir una mayor cantidad de acetato y ocurre aumento de los ácidos grasos saturados (32). Esto puede explicar en parte la variabilidad mostrada en los ácidos grasos de las dietas con menor nivel de concentrado en este estudio.…”

Enhanced Omega-3 Polyunsaturated Fatty Acid Contents in Muscle and Edible Organs of Australian Prime Lambs Grazing Lucerne and Cocksfoot Pastures

“…Canola oil was used for fattening lambs in an indoor system and successfully increased the n-3 LC-PUFA content in lamb meat [26]. Rice bran oil is rich in PUFA [27], and rice bran oil supplementation in an indoor system increased PUFA concentration in milk of dairy cows [28] and in adipose tissue of lambs [29]. Nevertheless, no published work has been done on canola and rice bran oil supplementation in an external grazing system.…”