This experiment was conducted to establish relevant mathematical model for estimating energy requirement for 10 to 20 kg Xiangcun black-haired pigs, and offer technical parameters to formulate breeding standard for Xiangcun black-haired pigs. A total of 42 Xiangcun black-haired pigs (barrow) were selected to study the energy deposition and metabolism using a gradient feed intake feeding trial (linear regression) and a comparative slaughtering test. The results showed as follows: 1) results from the comparative slaughtering test indicated that the maintenance metabolizable energy (ME) requirement for 10 to 20 kg Xiangcun black-haired pigs was 406.01 kJ/(W0.75·d), and the mathematical model for total ME requirement prediction was ME (kJ/d)=406.01W0.75(kg)+12.99△W(g/d); 2) while the estimation mathematical model established by linear regression for the ME requirement for 10 to 20 kg Xiangcun black-haired pigs was ME (kJ/d)=230.76W0.75(kg)+19.40△W(g/d); 3) the digestive energy conversion efficiency of 10 to 20 kg Xiangcun black-haired pigs was 94.22%. Based on the above results, it is suggested that the maintenance requirement of ME for 10 to 20 kg Xiangcun black-haired pigs is 406.01 kJ/(W0.75·d).
JIANG Bibo, YU Qifang, YAO Shuang, YANG Yongsheng, HE Jianhua
. Energy Requirement for 10 to 20 kg Xiangcun Black-Haired Pigs Estimated by Two Methods[J]. Chinese Journal of Animal Nutrition, 2014
, 26(8)
: 2335
-2341
.
DOI: 10.3969/j.issn.1006-267x.2014.08.039
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