Effects of Palygorskite Inclusion on the Growth Performance, Meat Quality, Antioxidant Ability, and Mineral Element Content of Broilers

Abstract

The present study was conducted to investigate different levels of palygorskite supplementation on the growth performance, meat quality, muscular oxidative status, and mineral element accumulation of broilers. One hundred ninety-two 1-day-old Arbor Acres broiler chicks were allocated to four dietary treatments with six replicates of eight chicks per replicate. Birds in the four treatments were given a basal diet supplemented with 0, 5, 10 and 20 g/kg palygorskite for 42 days, respectively. Compared with the control group, neither 5 g/kg nor 10 g/kg palygorskite inclusion affected growth performance of broilers during the 42-day study (P > 0.05). However, the highest level of palygorskite supplementation at 20 g/kg increased feed/gain ratio (F/G) of broilers (P < 0.001). Yellowness (P < 0.001) and redness (P = 0.003) of breast muscle and yellowness of leg muscle (P = 0.001) were decreased by palygorskite supplementation at the levels of 10 g/kg and especially 20 g/kg. In addition, redness of leg muscle was also reduced by the inclusion of 20 g/kg palygorskite (P = 0.009). In contrast, malonaldehyde (MDA) accumulation in the breast muscle was significantly increased by 20 g/kg palygorskite supplementation (P < 0.001). Supplementation of palygorskite at either 10 or 20 g/kg significantly decreased lead (Pb) accumulation in the breast (P = 0.001) or thigh (P = 0.045) and copper (Cu) accumulation in the breast (P = 0.022). In conclusion, growth performance, meat color, and antioxidant capacity of meat would reduce with the increasing level of palygorskite supplementation, whereas a higher level of palygorskite (10 or 20 g/kg) can alter mineral element accumulations in muscles as evidenced by reduced muscular Cu and Pb contents.

Effects of Dietary Zinc Bearing Palygorskite Supplementation on the Carcass Traits, Chemical Composition of Muscle, and Muscular Lead and Chromium Contents of Broilers

“…However, the supplementation of ZnPal in this study reduced the accumulations of Pb and Cr in the muscles, and it indicated that ZnPal supplementation could improve the safety of meat products. Similar results were also observed by Cheng et al (2016) who reported that dietary Pal inclusion, at either 10 or 20 g/kg, significantly decreased Pb accumulation in the breast or thigh muscle. Additionally, Zhang et al (2015) reported that 2% Pal supplementation reduced muscular Cd accumulation in blunt snout bream.…”

“…In the current study, the growth performance of broilers at 42 days of age was similar among groups, and the live weight of broilers at 42 days of age in the control group and the four ZnPal groups (from 20 to 80 mg/kg Zn) was 2253, 2272, 2233, 2200, and 2309 g, respectively (Yang et al, 2016). However, dietary ZnPal supplementation increased eviscerated yield and muscle yield, indicating that the inclusion of ZnPal could improve the carcass composition of broilers.…”

“…In the current study, dietary ZnPal did not alter muscular Zn content (Yang et al, 2016), and it may due to that muscle, unlike pancreas and tibia, was not sensitive to reflect Zn retention (Huang et al, , 2009). However, the supplementation of ZnPal in this study reduced the accumulations of Pb and Cr in the muscles, and it indicated that ZnPal supplementation could improve the safety of meat products.…”

Evaluation of palygorskite on pellet quality, growth, antioxidant status and mineral contents of Chinese mitten crabs (Eriocheir sinensis)

“…As showed in this study, palygorskite inclusion decreased the Pb accumulation of muscle and reduced the Cr levels in the muscle and edible viscera of Chinese mitten crabs. Similarly, Cheng et al () found that dietary addition with either 10 or 20 g/kg palygorskite reduced the Pb levels in the muscle of broilers. Studies demonstrated that Fe could compete the adsorption sites with Pb and Cr in intestine (Cerklewski, ; Hamilton, Bellamy, Valberg, & Valberg, ).…”

“…Recently, studies found that palygorskite, as a binding agent, enhanced feed pellet quality of blunt snout bream and broilers (Zhang, Yan, Zhang, Wen, & Zhou, ; Zhang et al, ). Dietary inclusion of palygorskite improved the growth performance, nutrient digestion, intestinal integrity, meat quality and mineral accumulation of blunt snout bream and broilers (Chen et al, ; Cheng et al, ; Zhang, Lv, Tang, & Wang, ; Zhang et al, ).…”