Effect of Different Forages on Growth Performance, Meat Production and Meat Quality of Hanwoo Steers : Meta-analysis

Abstract

In the present study, the effects of feeding different forage sources on the growth performance, meat production and meat quality of Hanwoo steers were evaluated using meta-analysis. In total 5 studies that were performed and published in the domestic journals in Korea were employed for the analysis. The results from nutritionally better quality roughage-based steers and rice straw-based steers in each study were assigned as a treatment and a control, respectively, and the mean difference between the treatment and the control was used for the evaluation of effect size. The summary effect was calculated using random effect model. As results, in growth performance, positive effects were found in feed intake, daily weight gain, final body weight and feed efficiency. The significant effect was found only in daily weight gain (p<0.05). In meat production, carcass weight, Longissimus dorsi area, yield index showed positive effect and negative effect was detected in back fat thickness. The significant effect in meat production was found in carcass weight and Longissimus dorsi area (p<0.05). In meat quality, positive effects were represented in marbling score and fat color. Meat color showed little effect. The significance for effects was not observed in the analysis of meat quality. In conclusion, feeding good quality forages to ruminants plays an important role in Korean beef cattle industry and hence further researches are necessary to improve the efficiency of forage utilization in Hanwoo cattle.

Effectiveness of Chitosan as a Dietary Supplement in Lowering Cholesterol in Murine Models: A Meta-Analysis

“…The highest among Q statistics was TG in blood, with high significance ( p < 0.0001). The significance of the Q statistic implies that the studies used to calculate the overall effect (the effect size of fixed and random effect models) do not share the same effect size with one another (Cho et al [ 70 ]). In this study, the Q statistics for all items were found to be significant ( p < 0.0001).…”

“…The τ 2 value indicates the absolute value of heterogeneity, representing variance in true effect sizes [ 74 ]. In addition, liver TG showed the highest τ 2 value, which means that variance in the effectiveness of chitosan administration is great (Cho et al [ 70 ]).…”

In vitro and in vivo evaluation of kenaf (Hibiscus cannabinus L.) as a roughage source for beef cattle

“…There was no statistical difference observed in carcass characteristics with different silages (p>0.05) for yield traits, including carcass weight, ribeye area, backfat thickness, and yield index. According to a meta-analysis on the effects of roughage quality on Hanwoo meat quality, the following traits can be affected: carcass weight, ribeye area, and yield index [ 27 ].…”