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Estimation of Growth Curves and Suitable Slaughter Weight of the Liangshan Pig
Jia Luo,Huaigang Lei,Linyuan Shen,Runlin Yang,Qiang Pu,Kangping Zhu,Mingzhou Li,Guoqing Tang,Xuewei Li,Shunhua Zhang,Li Zhu 아세아·태평양축산학회 2015 Animal Bioscience Vol.28 No.9
The Liangshan pig is a traditional Chinese small-sized breed; it has a relatively long feeding period and low meat production ability but superior meat quality. This study utilized three non-linear growth models (Von Bertalanffy, Gompertz, and logistic) to fit the growth curve of Liangshan pigs from an unselected, random-bred pig population and estimate the pigs most suitable slaughter weight. The growth development data at 20 time points of 275 Liangshan pigs (from birth to 250 d) were collected. To analyze the relative gene expression related to development, seven slaughter weight phases (50, 58, 66, 74, 82, 90, and 98 kg) (20 pigs per phase) were examined. We found that the Liangshan pig growth curve fit the typical S-curve well and that their growth turning point was 193.4 days at a weight of 62.5 kg, according to the best fit Von Bertalanffy model based on the goodness of fit criteria. Furthermore, we estimated that the most suitable slaughter weight was 62.5 to 74.9 kg based on the growth curve and the relative expression levels of growth-related genes.
Estimation of Growth Curves and Suitable Slaughter Weight of the Liangshan Pig
Luo, Jia,Lei, Huaigang,Shen, Linyuan,Yang, Runlin,Pu, Qiang,Zhu, Kangping,Li, Mingzhou,Tang, Guoqing,Li, Xuewei,Zhang, Shunhua,Zhu, Li Asian Australasian Association of Animal Productio 2015 Animal Bioscience Vol.28 No.9
The Liangshan pig is a traditional Chinese small-sized breed; it has a relatively long feeding period and low meat production ability but superior meat quality. This study utilized three non-linear growth models (Von Bertalanffy, Gompertz, and logistic) to fit the growth curve of Liangshan pigs from an unselected, random-bred pig population and estimate the pigs most suitable slaughter weight. The growth development data at 20 time points of 275 Liangshan pigs (from birth to 250 d) were collected. To analyze the relative gene expression related to development, seven slaughter weight phases (50, 58, 66, 74, 82, 90, and 98 kg) (20 pigs per phase) were examined. We found that the Liangshan pig growth curve fit the typical S-curve well and that their growth turning point was 193.4 days at a weight of 62.5 kg, according to the best fit Von Bertalanffy model based on the goodness of fit criteria. Furthermore, we estimated that the most suitable slaughter weight was 62.5 to 74.9 kg based on the growth curve and the relative expression levels of growth-related genes.
Formation of MgCO3 3H2O in the CO2 mineralization system using Mg (OH)2 as an intermediate at 20 C
Wenting Cheng,Li Fang,Huaigang Cheng,Enze Li,Cuiyu Zhang,Fangqin Cheng 한국공업화학회 2019 Journal of Industrial and Engineering Chemistry Vol.76 No.-
The formation of MgCO3 3H2O in the CO2 mineralization system was investigated using Mg(OH)2 as anintermediate at 20 C. Liquid and solid analyses were done for qualitative and quantitative compositioncharacterizations of the reacted samples. Results showed that the morphology of Mg(OH)2 had anobvious effect on the growth rate, size and morphology of MgCO3 3H2O. The formation of MgCO3 3H2Omight be explained by the dissolution–recrystallization mechanism. Larger bundle-like MgCO3 3H2Owhich composed of middle-binding rod crystals was obtained from the plate-like Mg(OH)2. Thesefindings could pave the way for controllable crystallization of MgCO3 3H2O in a CO2 mineralizationsystem.