动物营养学报2012，Vol.24Issue(8)：1414-1420,7.DOI:10.3969/j.issn.1006-267x.2012.08.004
30～60kg生长猪磷需要量研究
Phosphorus Requirement of Growing Pigs Weighing 30 to 60 kg
摘要
Abstract
This experiment was conducted to study the effects of dietary phosphorus level on growth performance , serum biochemical indices and tibia performance of growing pigs, and to explore the optimal phosphorus level in the diet of growing pigs weighting 30 to 60 kg. A single factorial randomized design was adopted, and thirty crossed pigs (Duroc xLandrace x Yorkshire) with an average bodyweight of (32. 12 ±0. 49) kg were randomly allotted into 5 groups with 6 replicates per group and 1 pig per replicate. Pigs were fed corn-soybean experimental diets supplemented with 0. 38% (control group) , 0. 43% , 0. 48% , 0. 53% and 0. 58% phosphorus, respectively. The adjustment period lasted for 7 days, and the experimental period lasted for 28 days. The results showed as follows: 1) compared with the control group, the average daily gain, average daily feed intake in 0. 53% group were significantly increased (P <0.01) , however, the feed/gain in 0.53% group was significantly decreased (P <0. 01). 2) The serum phosphorus content in experimental groups was significantly higher than that in control group (P <0.01) , and the serum calcium content in 0. 53% group was significantly lower than that in control group (P <0. 05). The insulin-like growth factor I (IGF- I ) content was not affected by dietary phosphorus level (P >0. 05). 3) The length of tibia, the content of calcium and phosphorus of tibia were increased at first and decreased subsequently with the dietary phosphorus increasing, and they got the highest values in 0. 53% group (P >0. 05). The dry fat-free weight of tibia in 0. 53% group was significantly higher than that in control group (P <0. 05) , and there was no significant difference among other groups (P >0. 05). In conclusion, the optimal phosphorus requirement of growing pigs weighing 30 to 60 kg is 0.53% under the conditions of this experiment.关键词
生长猪/磷需要量/生长性能/血清生化指标/胫骨性能Key words
growing pigs/ phosphorus requirement/ growth performance/ serum biochemical indices/ tibia performance分类
农业科技引用本文复制引用
苏月娟,孙会,王晓宇,许雪魁,程传锋,秦贵信..30～60kg生长猪磷需要量研究[J].动物营养学报,2012,24(8):1414-1420,7.基金项目
国家公益性行业(农业)科研专项(200903006) （农业）
