scholarly journals Effects of dietary supplementation of chitosan on immune and antioxidative function in beef cattle

2016 ◽  
Vol 60 (No. 1) ◽  
pp. 38-44 ◽  
Author(s):  
T. Li ◽  
R. Na ◽  
P. Yu ◽  
B. Shi ◽  
S. Yan ◽  
...  
2012 ◽  
Vol 39 (1) ◽  
pp. 61-68 ◽  
Author(s):  
Min-Gu Kang ◽  
Hyun-Joo Kim ◽  
Ae-Ra Jang ◽  
Dong-Keun Gam ◽  
Gwan-Sik Yun ◽  
...  

2021 ◽  
Vol 7 ◽  
Author(s):  
Yanjiao Li ◽  
Hanle Shang ◽  
Xianghui Zhao ◽  
Mingren Qu ◽  
Tao Peng ◽  
...  

The experiment was conducted to investigate the effects of dietary supplementation with Puerarin on meat quality, muscle antioxidant ability, and muscle fiber characteristics of beef cattle under a hot environment in summer. Thirty-two 15 ± 1.5-month-old Jinjiang bulls (291.65 ± 8.84 kg) were randomly divided into four groups with dietary Puerarin at 0 (control), 200 (Pue200), 400 (Pue400), and 800 (Pue800) mg/kg in the feed concentrate (n = 8). The feeding trial lasted for 60 days after a 10-day adaptation period (July 1–September 8); the average values of temperature, relative humidity and temperature, and humidity index were 30.68°C, 68.05%, and 81.81, respectively. The growth performance on day 40 of the experiment period was calculated. After 60 days' experimental period, four Jinjiang cattle per treatment from the control group, Pue400 group, and Pue800 group were slaughtered. Compared with the control group, the Pue400 and Pue800 groups improved the growth performance of beef cattle; the Pue800 group elevated the activities of superoxide dismutase, total antioxidant capacity, and glutathione peroxidase in the M. longissimus thoracis (LT) muscle. In the control group, the cell membrane was incomplete, and most of the mitochondria were elongated and in a fission state, while in the Pue400 and Pue800 groups, the cell membrane was clear and complete, and the mitochondria presented with round and oval shapes. Compared with the control group, the Pue400 and Pue800 groups reduced the shear force of the LT muscle, and the Pue400 group decreased the muscle fiber diameter and the myosin heavy-chain (MyHC)-IIb gene expression. Furthermore, the Pue400 and Pue800 groups decreased the ratio of AMP/ATP, the Pue800 group reduced the AMP-activated protein kinase α2 mRNA expression, and the Pue400 group improved the nuclear respiratory factor 1 mRNA expression. These results indicated that dietary supplementation with Puerarin might be beneficial to the meat quality of heat-stressed beef cattle by improving muscle antioxidant ability and reducing the MyHC-IIb muscle fiber composition. Based on the results of this study, we recommended 400 mg/kg Puerarin in the feed concentrate of beef cattle (~300 kg) for mitigation of heat stress.


2020 ◽  
Vol 13 (3) ◽  
pp. 593-596
Author(s):  
Bambang Waluyo Hadi Eko Prasetiyono ◽  
Agung Subrata ◽  
Widiyanto Widiyanto

Aim: This study evaluated the effect of feeding a graded amount of extruded jack bean (Canavalia ensiformis) on nutritional status, production performances, and economic performance of beef cattle. Materials and Methods: The supplement called "KOROPASS" was prepared from the extruded jack bean (according to the extrusion heating process). Sixteen male Friesian-Holstein crossbred cattle were divided into four groups and fed on KOROPASS as per the regimen: R0 (total mixed ration [TMR] without KOROPASS), R1 (TMR supplemented with 3% KOROPASS), R2 (TMR supplemented with 6% KOROPASS), and R3 (TMR supplemented with 9% KOROPASS). The in vivo experiment lasted 44 days. TMR contained 12% crude protein and 60% total digestible nutrient. The consumption and digestibility of dry matter (DM), organic matter (OM), and total protein (TP), feed efficiency, average daily gain, and income over feed cost (IOFC) were evaluated. Results: KOROPASS supplementation significantly increased (p<0.05) beef cattle consumption of DM (from 7.83 [R0] to 8.33 [R1], 8.91 [R2], and 9.69 kg/day [R3]), OM (from 6.72 to 7.17, 7.69, and 8.38 kg/day, respectively), and TP (from 892 to 1020, 1182, and 1406 g/day, respectively). The elevated levels of KOROPASS significantly increased (p<0.05) digestibility in terms of the levels of DM (from 42.9 [R0] to 50.6 [R1], 58.0 [R2], and 63.6% [R3]), OM (from 54.3 to 59.6, 66.3, and 70.6%, respectively), and TP (from 65.0 to 67.1, 75.0, and 80.7%, respectively). Dietary supplementation of KOROPASS significantly increased (p<0.05) metabolizable protein, average daily weight gain, and feed efficiency of beef cattle. Finally, dietary KOROPASS supplementation, especially at 9%, resulted in the highest (p<0.05) IOFC value of beef cattle. Conclusion: Dietary supplementation of KOROPASS improved feed utility, as reflected by the increase in consumption and digestibility of DM, OM, and TP. Further, KOROPASS supplementation improved feed efficiency, growth, and economic performance of beef cattle. The findings indicate the potential value of KOROPASS as a feed supplement for beef cattle.


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