Abstract:RuminantsFull-length research article
Comparison of slaughter performances and meat qualities of Honghe yellow cattle at different agesABSTRACT -We examined differences in slaughter performance and meat quality of Honghe yellow cattle of different ages. We randomly selected nine Honghe bulls for slaughter at 12 (12M), 36 (36M), and 60 (60M) months of age. There were significant differences in antemortem live weight, carcass weight, and net weight among the three groups, all of which increased with age. Backfat… Show more
“…A Sykam S-433D (from Saikam Scientific Instruments Co., Ltd., Beijing, China) automatic AA analyzer was used to analyze the filtrate. The one-step extraction methylation procedure for LD and BF muscle fatty acid acquisition [4] was performed in a gas chromatograph-mass spectrometer model 7890B-5977B (Agilent, Palo Alto, CA, USA). The column specifications and field parameters were DB-5 (30 m × 0.25 mm × 0.25 µm), and 25 µL (10.337 mg/mL) of C19:0 was used as an internal standard.…”
Section: Amino Acid and Fatty Acid Measurementsmentioning
confidence: 99%
“…In 1981, they were incorporated into the Honghe Hani and Yi Autonomous Prefecture of China's Records of Livestock and Poultry Breeds [3]. Located in the Mourning Mountains, a mountainous region in the southwestern part of China's Yunnan-Guizhou Plateau, Honghe yellow cattle are adapted for grazing roughage on steep slopes (at altitudes ranging from 2000 to 3166 m) [4]. And their advantages are that they are well adapted to harsh environmental conditions, have high resistance and fertility to parasites and diseases, and have good roughage/heat tolerance and adaptability.…”
Section: Introductionmentioning
confidence: 99%
“…And their advantages are that they are well adapted to harsh environmental conditions, have high resistance and fertility to parasites and diseases, and have good roughage/heat tolerance and adaptability. However, the disadvantages of Honghe yellow cattle are their small size, slow growth rate, low productivity, and low average slaughter rate (45.6%) [4].…”
Consumers are increasing their daily demand for beef and are becoming more discerning about its nutritional quality and flavor. The present objective was to evaluate how the ration energy content (combined net energy, Nemf) impacts the slaughter performance, carcass characteristics, and meat qualities of Honghe yellow cattle raised in confinement. Fifteen male Honghe yellow cattle were divided into three groups based on a one-way design: a low-energy group (LEG, 3.72 MJ/kg), a medium-energy group (MEG, 4.52 MJ/kg), and a high-energy group (HEG, 5.32 MJ/kg). After a period of 70 days on these treatments, the animals were slaughtered and their slaughter performance was determined, and the longissimus dorsi muscle (LD) and biceps femoris (BF) muscles were gathered to evaluate meat quality and composition. Increasing the dietary energy concentration led to marked improvements (p < 0.05) in the live weight before slaughter (LWBS), weight of carcass, backfat thickness, and loin muscle area. HEG also improved the yield of high-grade commercial cuts (13.47% vs. 10.39%) (p < 0.05). However, meat quality traits were not affected by treatment except for shear force, which was affected by dietary energy. A significant improvement (p < 0.05) in the intramuscular fat (IMF) content was observed in the HEG. Little effect on the amino acid profile was observed (p > 0.05), except for a tendency (p = 0.06) to increase the histidine concentration in the BF muscle. Increasing dietary energy also reduced C22:6n-3 and saturated fatty acids (SFAs) and enhanced C18:1 cis-9 and monounsaturated fatty acids (MUFAs, p < 0.05). Those results revealed that increasing energy levels of diets could enhance slaughter traits and affect the meat quality and fatty acid composition of different muscle tissues of Honghe yellow cattle. These results contribute to the theoretical foundation to formulate nutritional standards and design feed formulas for the Honghe yellow cattle.
“…A Sykam S-433D (from Saikam Scientific Instruments Co., Ltd., Beijing, China) automatic AA analyzer was used to analyze the filtrate. The one-step extraction methylation procedure for LD and BF muscle fatty acid acquisition [4] was performed in a gas chromatograph-mass spectrometer model 7890B-5977B (Agilent, Palo Alto, CA, USA). The column specifications and field parameters were DB-5 (30 m × 0.25 mm × 0.25 µm), and 25 µL (10.337 mg/mL) of C19:0 was used as an internal standard.…”
Section: Amino Acid and Fatty Acid Measurementsmentioning
confidence: 99%
“…In 1981, they were incorporated into the Honghe Hani and Yi Autonomous Prefecture of China's Records of Livestock and Poultry Breeds [3]. Located in the Mourning Mountains, a mountainous region in the southwestern part of China's Yunnan-Guizhou Plateau, Honghe yellow cattle are adapted for grazing roughage on steep slopes (at altitudes ranging from 2000 to 3166 m) [4]. And their advantages are that they are well adapted to harsh environmental conditions, have high resistance and fertility to parasites and diseases, and have good roughage/heat tolerance and adaptability.…”
Section: Introductionmentioning
confidence: 99%
“…And their advantages are that they are well adapted to harsh environmental conditions, have high resistance and fertility to parasites and diseases, and have good roughage/heat tolerance and adaptability. However, the disadvantages of Honghe yellow cattle are their small size, slow growth rate, low productivity, and low average slaughter rate (45.6%) [4].…”
Consumers are increasing their daily demand for beef and are becoming more discerning about its nutritional quality and flavor. The present objective was to evaluate how the ration energy content (combined net energy, Nemf) impacts the slaughter performance, carcass characteristics, and meat qualities of Honghe yellow cattle raised in confinement. Fifteen male Honghe yellow cattle were divided into three groups based on a one-way design: a low-energy group (LEG, 3.72 MJ/kg), a medium-energy group (MEG, 4.52 MJ/kg), and a high-energy group (HEG, 5.32 MJ/kg). After a period of 70 days on these treatments, the animals were slaughtered and their slaughter performance was determined, and the longissimus dorsi muscle (LD) and biceps femoris (BF) muscles were gathered to evaluate meat quality and composition. Increasing the dietary energy concentration led to marked improvements (p < 0.05) in the live weight before slaughter (LWBS), weight of carcass, backfat thickness, and loin muscle area. HEG also improved the yield of high-grade commercial cuts (13.47% vs. 10.39%) (p < 0.05). However, meat quality traits were not affected by treatment except for shear force, which was affected by dietary energy. A significant improvement (p < 0.05) in the intramuscular fat (IMF) content was observed in the HEG. Little effect on the amino acid profile was observed (p > 0.05), except for a tendency (p = 0.06) to increase the histidine concentration in the BF muscle. Increasing dietary energy also reduced C22:6n-3 and saturated fatty acids (SFAs) and enhanced C18:1 cis-9 and monounsaturated fatty acids (MUFAs, p < 0.05). Those results revealed that increasing energy levels of diets could enhance slaughter traits and affect the meat quality and fatty acid composition of different muscle tissues of Honghe yellow cattle. These results contribute to the theoretical foundation to formulate nutritional standards and design feed formulas for the Honghe yellow cattle.
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