在含有干乳清的仔猪起始日粮中添加氯化钠、磷酸钠或盐酸的效果。

Effect of supplemental sodium chloride, sodium phosphate, or hydrochloric acid in starter pig diets containing dried whey.

作者信息

Mahan D C, Newton E A, Cera K R

机构信息

Ohio State University, Columbus 43210-1095, USA.

出版信息

J Anim Sci. 1996 Jun;74(6):1217-22. doi: 10.2527/1996.7461217x.

DOI:10.2527/1996.7461217x

PMID:8791192

Abstract

Three experiments involving a total of 606 pigs weaned at 23 +/- 2 d of age were used to evaluate the effects of added dietary Na or Cl or both in combination (NaCl) on postweaning performance responses. A basal diet without added NaCl was formulated to 1.20% lysine using a corn-soybean protein mixture with 20% dried whey (C-SBP-DW) and was used in all experiments. The analyzed content of the basal diet for the three experiments averaged .19% Na, .37% Cl, and 1.37% K. In Exp. 1, NaCl was added to treatment diets at 0, .20, .40, and .60% at the expense of corn. The experiment was a randomized complete block (RCB) design conducted in 14 replicates using a total of 336 pigs (six pigs/ pen). The results demonstrated a linear (P < .01) growth response during the 0- to 7-d and a quadratic (P < .08) response during the 8- to 14-d period. Gain: feed ratio improved quadratically (P < .08) for the 0- to 14-d period. In Exp. 2, Na2HPO4 added to the C-SBP-DW basal diet provided supplemental Na levels of 0, .08, .16, and .24% Na to four treatment diets. The experiment was conducted in six replicates in a RCB design using a total of 144 pigs (six pigs/pen). The results demonstrated a linear (P < .05) growth response during the 0- to 7-d period as Na level increased, but not thereafter, and an improved gain: feed ratio (P < .05) for the 0- to 14-d period. In Exp. 3, Cl was added as HCl at 0, .05, or .10% Cl to the basal C-SBP-DW diet. The experiment was a RCB design conducted in six replicates using a total of 126 pigs (five or six pigs/pen between replicates). The results demonstrated a linear growth (P < .01) and feed intake (P < .08) response during the 0- to 7-d and the 0- to 14-d period to increasing levels of Cl. Feed intake also increased for the 0- to 7-d (P < .08), and 8- to 14-d (P < .05) periods. Stool looseness was unaffected by any of the dietary variables in the three experiments. These results suggest that the NRC (1988) recommendations for Na and Cl for young pigs (< or = 10 kg BW) may need to be increased.

摘要

三项实验共涉及606头23±2日龄断奶仔猪，用于评估日粮中添加钠（Na）或氯（Cl）或二者组合（NaCl）对断奶后生产性能反应的影响。使用含20%乳清粉的玉米 - 大豆蛋白混合物（C - SBP - DW）配制了赖氨酸含量为1.20%且未添加NaCl的基础日粮，并用于所有实验。三项实验基础日粮的分析成分平均为：钠0.19%、氯0.37%、钾1.37%。在实验1中，以玉米为代价，在处理日粮中添加0、0.20%、0.40%和0.60%的NaCl。该实验采用随机完全区组（RCB）设计，共14个重复，使用336头猪（每栏6头猪）。结果表明，在0至7天期间生长反应呈线性（P < 0.01），在8至14天期间呈二次曲线反应（P < 0.08）。0至14天期间的料重比呈二次曲线改善（P < 0.08）。在实验2中，向C - SBP - DW基础日粮中添加磷酸氢二钠（Na2HPO4），使四种处理日粮的钠添加水平分别为0、0.08%、0.16%和0.24%。该实验采用RCB设计，共6个重复，使用144头猪（每栏6头猪）。结果表明，随着钠水平升高，0至7天期间生长反应呈线性（P < 0.05），但之后无此现象，且0至14天期间料重比有所改善（P < 0.05）。在实验3中，向基础C - SBP - DW日粮中添加0、0.05%或0.10%的盐酸（HCl）形式的氯。该实验采用RCB设计，共6个重复，使用126头猪（各重复间每栏5或6头猪）。结果表明，在0至7天和0至14天期间，随着氯水平升高，生长呈线性（P < 0.01），采食量呈线性（P < 0.08）反应。0至7天（P < 0.08）和8至14天（P < 0.05）期间采食量也增加。三项实验中，粪便稀软程度均不受任何日粮变量影响。这些结果表明，美国国家研究委员会（1988）对幼猪（体重≤10 kg）钠和氯的推荐量可能需要提高。