Lukkananukool, Achara

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Evaluating the benefits of hemp leaves in goat diets: nutrient digestibility, growth performance and histomorphology
(2025-11-01)
Lukkananukool, Achara
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Kongrit, Chanya
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Chaosap, Chanporn
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Adeyemi, Kazeem D.
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Mitchaothai, Jamlong
This study investigated the influence of hemp leaves in concentrate diets on growth performance, nutrient digestibility, and intestinal morphology in goats. Fifteen Thai native × Boer bucks (BW: 16.28 ± 0.35 kg; 4 ± 0.5months old) were randomly assigned to diets containing 0, 2, or 4% hemp leaves and fed for 150 days. Results showed that feed intake, nutrient digestibility, and growth performance were unaffected by dietary hemp (P > 0.05), though goats fed 4% hemp leaves exhibited higher neutral detergent fiber intake. Blood urea nitrogen (BUN) levels were similar across all groups at 0 and 3 h postprandial, but goats fed 2% hemp leaves had elevated (P < 0.05) BUN at 6 h postprandial. Diets had no effect on the height, width, number and surface area of rumen papillae (P > 0.05). No significant differences were observed in villus height, villus width, or crypt depth in the duodenum, jejunum, and ileum. However, goats fed 4% hemp leaves displayed a significantly higher jejunal villus height to crypt depth ratio, indicating improved intestinal health. These findings suggest that hemp leaves can be included in goat diets without negative effects on performance, while the 4% enhances fiber intake and jejunal morphology.
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Chemical and fatty acid composition, collagen, calpain and troponin T contents and quality characteristics of five muscle types in native Thai cattle
(2024-03-01)
Chaosap, Chanporn
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Sommart, Kritapon
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Adeyemi, Kazeem D.
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Polyorach, Sineenart
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Lukkananukool, Achara
In this study, chemical composition, fatty acids, collagen solubility, calpains, and troponin T degradation were investigated in various muscles of native Thai cattle (NTC). Five muscles, namely Bicep femoris, Infraspinatus, Longissimus thoracis, Supraspinatus and Semimembranosus were sampled from five Kho Isaan bulls. Moisture content of Longissimus thoracis was lower (p < 0.05) than others. Protein content of Longissimus thoracis, Bicep femoris and Semimembranosus was higher (p < 0.05) than that of Infraspinatus and Supraspinatus. Infraspinatus and Longissimus thoracis had higher fat content (p < 0.05) than Bicep femoris and Semimembranosus. Muscle pH, color, and drip loss did not differ between muscles. Semimembranosus and Supraspinatus showed higher cook loss (p < 0.05) than Infraspinatus and Longissimus thoracis. Infraspinatus had the lowest Warner–Bratzler shear force (p < 0.05). Supraspinatus, Infraspinatus and Bicep femoris had higher (p < 0.05) soluble, insoluble and total collagen content than Semimembranosus and Longissimus thoracis. Infraspinatus had higher collagen solubility than Semimembranosus and Supraspinatus. Collagen content and solubility were not affected by ageing time. The relative band intensities of intact troponin T and its degradation product at 2- and 14-days postmortem were higher in Longissimus thoracis than in other muscles. Infraspinatus and Supraspinatus had significantly higher expression of m-calpain and calpastatin genes than Longissimus thoracis, Bicep femoris, and Semimembranosus. Total fatty acid was higher while the percentage of C22:6n-3 was lower in Infraspinatus and Longissimus thoracis (p < 0.05) than in other muscles. These results show differences in specific nutritional, technological and eating quality characteristics of NTC muscles and thus provide information for optimizing storage and processing conditions for various NTC muscles.
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Effects of supplementing hemp (Cannabis sativa L.) leaves in concentrate diet on carcass traits and meat characteristics of Longissimus muscle in goat kids
(2025-12-01)
Chaosap, Chanporn
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Sahatsanon, Katatikarn
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Adeyemi, Kazeem D.
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Sringarm, Korawan
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Mitchaothai, Jamlong
The influence of dietary hemp (Cannabis sativa L.) leaf (HL) supplementation in a concentrate diet on carcass traits, physicochemical properties, amino acids, ribonucleotides, lipid oxidation, and fatty acids of Longissimus thoracis et lumborum (LTL) muscle in goat kids was evaluated. Fifteen entire Thai native x Boer bucks (body weight: 16.28±0.35kg; age: 4 months) were randomly assigned to concentrate diets containing 0% (HL-0), 2% (HL-2), or 4% (HL-4) HL for 150 days, after which they were slaughtered. The LTL muscles were assessed for physicochemical properties, fatty acids, amino acids, ribonucleotides and lipid oxidation. The HL-4 goats had heavier hot and cold carcass weights compared to the other groups (P<0.05). Shoulder percentage was lower in the HL-0 goats than in the other groups (P<0.05). The diets did not affect color, chemical composition, shear force, muscle fiber diameter, sarcomere length, ribonucleotides, or free and total amino acids in the LTL muscle in goats. However, the HL-4 meat had higher (P<0.05) pH 24h compared to the HL-2 meat, while the pH of the HL-0 meat did not differ from that of the other groups. The HL-4 meat had lower cook loss compared to the other meats (P<0.05). HL supplementation increased C20:4n-6 concentration (P<0.05). HL-2 meat had higher total polyunsaturated fatty acids compared to the other groups (P<0.05). The HL-2 and HL-4 meats had lower TBARS values (P<0.05) throughout the 5-day postmortem chill storage. Dietary inclusion of 2–4% hemp leaves improved carcass yield, fatty acids, and oxidative stability of goat meat without compromising other quality traits, suggesting its potential as a natural feed additive to enhance meat quality and shelf life.

Lukkananukool, Achara

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