为研究贵州香猪维持和生长的钙、磷需要量，选择3.5～4.0月龄，遗传来源相似，体重(11.06±2.61) kg的贵州从江香猪和剑白香猪去势公猪各6头，采用无钙无磷纯合饲粮法进行代谢试验，测定贵州香猪内源钙与内源磷的代谢规律。并选择60~75日龄贵州从江香猪34头，采用扣除蛋白质等消化能（DEpf）饲粮设计和比较屠宰试验，测定贵州香猪生长的钙、磷沉积规律。结果表明:1)贵州香猪内源钙、磷排泄量分别为47.2和20.8 mg/kg BW；2)无脂增重的钙、磷沉积量在7～16 kg体重段分别为10.86和4.50 g/kg，在16～25 kg体重段分别为8.02和4.75 g/kg。由结果可得出，贵州香猪维持的净钙、净磷需要量分别为47.2和20.8 mg/kg BW，生长的净钙需要量为(10.03－0.184 BW) g/kg BW、净磷需要量约为3.46 g/kg BW，常规混合饲粮钙和有效磷的真消化率可按60%和67%估计。
To determinate the calcium and phosphorus requirements for maintenance and growth of Guizhou Xiang pigs, six castrated Congjiang Xiang pigs and six castrated Jianbai Xiang pigs at the age of 3.5 to 4 months and with the same body weight of (11.06±2.61) kg and genetic background were selected as experimental animals in this study. Calcium- and phosphorus-free purified diets were adopt in this study to investigate the metabolic regulation of endogenous calcium and phosphorus in Guizhou Xiang pigs. 34 Congjiang Xiang pigs aged from 60 to 75 days and fed with the protein-free diets equalized digestible energy (DEpf) were selected to measure the deposition regulation and requirements of calcium and phosphorus in growing Guizhou Xiang pigs using a comparative slaughter method. The results showed as follows: 1)the losses of endogenous calcium and phosphorus of Guizhou Xiang pigs were 47.2 and 20.8 mg/kg BW per day, respectively. 2)The deposition of calcium and phosphorus were 10.86 and 4.50 g/kg of fat-free gain from 7 to 16 kg live body weight and 8.02 and 4.75 g/kg of fat-free gain from 16 to 25 kg live body weight, respectively. The results indicate that requirements of net calcium and phosphorus for maintenance are 47.2 and 20.8 g/kg BW and for growth are (10.03－0.184 BW) and 3.46 g/kg BW in Guizhou Xiang pigs, respectively. The true digestibility of calcium and available phosphorus of conventional compound diets may be estimated by 60% and 67%, respectively.［Chinese Journal of Animal Nutrition, 2011, 23（8）：1402 -1408］
［1］杨凤．动物营养学[M]．2版．北京：中国农业出版社，2001．
[2]National Research Council (NRC). Nutrient requirements of swine[S]. 10th ed. National Academy of Sciences. National Academy Press, Washington, D.C., 1998.
[3]吴敏，杨正德，许万里，等.贵州从江香猪体成分沉积规律与肉质营养特性研究[J].贵州农业科学，2010，38(3)：121-123.
[4]李伟，杨正德，刘代强，等.贵州香猪内源氮与内源氨基酸代谢规律研究[J].动物营养学报，2010，22(6)：1523-1528.
[5]王顺祥，印遇龙，李铁军，等.回归法测定生长猪内源钙排泄量及钙真消化率的研究[J].云南农业大学学报，2007，22(4)：536-543.
[6]方热军，王康宁，范明哲，等.不同方法测定生长猪内源磷排泄量及磷真消化率的比较研究[J].畜牧兽医学报，2005，36(2)：137-143.
[7]PETTEY L A, CROMWELL G L, LINDEMANN M D. Estimation of endogenous phosphorus loss in growing and finishing pigs fed semi-purified diets[J]. Journal of Animal Science, 2006, 84: 618-626.
[8]WALTER J, GERRITS J, HENK T G, et al. Effect of protein and protein-free energy intake on protein and fat deposition rates in preruminant calves of 80 to 240 kg live weight[J]. Journal of Animal Science, 1996, 4:2129-2139.
[9]Agricultural Research Council (ARC). The nutrient requirements of pigs[S]. London： Commonwealth Agricultural Bureaux, 1981.
[10]FAN M Z, ARCHBOLD T, SAUER W C, et al. Novel methodology allows simultaneous measurement of true phosphorus digestibility and the gastrointestinal endogenous phosphorus outputs in studies with pigs[J]. Journal of Nutrition, 2001, 131: 2388-2396.
[11]JONGBLOED A W. Phosphorus in the feeding of pigs: effect of diet on the absorption and retention of phosphorus by growing pigs[D]. Ph.D. Thesis. Wageningen: Wageningen University, 1987.
[12]TILMAN D, FARGIONE J, WOLFF B, et al. Forecasting agriculturally driven global environmental changes[J]. Science, 2001, 292:281-284.
京公网安备 11010802041926号