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Effects of varying levels of coated cysteamine hydrochloride in diet on growth performance and carcass quality of steers |
Watcharawit Meenongyai1 
, Kannika Wonapanit1,2,*
, Pichad Khejornsart1
, Piyamas Phongkaew1
, Unchan Traithilen1
, Naroon Waramit2,3
, MD. Maksudul Haque Helali4
, Alimul Islam Shimul4
, Abdullah Al Mamun4
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1Faculty of Natural Resources and Agro-Industry, Kasetsart University Chalermphrakiat Sakon Nakhon Pr, Maung, Thailand
2School of integrated Science, Kasetsart University, Bangkok, Thailand 10900, Bangkok, Thailand
3Department of Agronomy, Faculty of Agriculture at Kamphaeng Saen campus, Kasetsart University, Nakhon Pathom, Thailand 73140, Nakhon Pathom, Thailand
4Faculty of Animal Husbandry, Bangladesh Agricultural University, Mymensingh, Bangladesh 2202, Mymensingh, Bangladesh |
Correspondence:
Kannika Wonapanit, Tel: +66849221777, Fax: +6642725037, Email: csnkkw@ku.ac.th
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Received: 7 December 2024 • Revised: 26 February 2025 • Accepted: 28 April 2025 |
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| Abstract |
Objective
This study aims to evaluate the effects of different levels of coated cysteamine HCl (CSH) supplementation on growth performance, carcass traits, and meat quality in Charolais crossbred cattle.
Methods
Twenty-four Charolais crossbred steers, aged 24–30 months with an initial body weight of 418 ± 31 kg, were assigned to three dietary treatments: 0% (control), 0.5%, or 1.0% CSH in concentrate. The steers were fed the experimental diets for 200 days.
Results
Increasing CSH levels in concentrate diets led to significant increases (p < 0.05) in body weight, hot carcass weight, cold carcass weight, and dressing percentage. CSH supplementation reduced shear force values and cooking loss (p < 0.05). Meat lightness was significantly greater in the 1.0% CSH-supplemented group (p < 0.05). With increasing CSH levels, the proportion of high-value cuts, such as rib set and T-bone, increased (p < 0.05), while the proportion of lower-value cuts, including macreuse, shank, and tendons, decreased (p < 0.05). Non-carcass weights, including the feet, head, digestive tract, and scraps, were significantly higher in the 1.0% CSH-supplemented diet (p < 0.05). The meat’s chemical composition did not differ significantly among the treatment groups (p > 0.05). Muscle fiber diameter was significantly larger in the 1.0% CSH-supplemented group (p < 0.05). Monounsaturated fatty acids increased (p < 0.05) with higher CSH levels, whereas polyunsaturated and saturated fatty acids exhibited a significant decrease (p < 0.05).
Conclusion
Dietary supplementation with CSH improves growth rate, carcass traits, and meat quality in steers. An inclusion level of 1.0% CSH in concentrate is the optimum feeding dosage, indicating its potential as an effective feed additive for enhancing beef production efficiency.
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| Keywords:
Cysteamine; Growth Performance; Carcass characteristics; Meat Quality; Muscle Fiber; Fatty Acids |
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