Wen Xiaolu, Jiang Zongyong, Yang Xuefen, Xiao Hao, Gao Kaiguo, Wang Li
Institute of Animal Science, Guangdong Academy of Agricultural Sciences, State Key Laboratory of Swine and Poultry Breeding Industry, Key Laboratory of Animal Nutrition and Feed Science in South China, Ministry of Agriculture and Rural Affairs, Guangdong Provincial Key Laboratory of Animal Breeding and Nutrition, 1 Dafeng 1st Street, Guangzhou 510640, China.
Animals (Basel). 2024 Sep 15;14(18):2688. doi: 10.3390/ani14182688.
The aim of this study was to determine the optimal SID Arg: Lys ratio for maximizing the reproductive performance, immunity and biochemical parameters of sows during gestation, the colostrum composition, and the performance of their offspring. A total of 174 multiparous sows were randomly allocated to five treatment groups varying in dietary SID Arg: Lys ratios (0.91, 1.02, 1.14, 1.25 and 1.38) through modification of the levels of Arg or alanine supplementation (the total level of nitrogen was the same in all treatments). The results showed that increasing the dietary SID Arg: Lys ratio increased the number of piglets born alive ( < 0.05, linear and quadratic). The number of stillborn piglets, the birth weight variation of born alive piglets, the birth interval ( < 0.05, linear and quadratic) and the number of mummies ( < 0.05, quadratic) reduced with increasing the dietary SID Arg: Lys ratio. Broken-line regression analysis indicated that the optimal SID Arg: Lys ratio requirement for gestating sows to maximize the number of piglets born alive was 1.25. The content of non-fat solid, total solid, protein, and energy in colostrum increased linearly and quadratically ( < 0.05) with increasing dietary SID Arg: Lys ratio. Additionally, when increasing the dietary SID Arg: Lys ratio, the concentration of IgA ( < 0.05, quadratic) and IgM ( < 0.05, linear and quadratic) of plasma increased at day 90 of gestation; IgG ( < 0.05, linear and quadratic) concentration increased at day 110 of gestation of sows. The dietary SID Arg: Lys ratio had an increasing effect ( < 0.05, linear and quadratic) on plasma insulin levels at day 90 of gestation. Furthermore, there were increases in plasma concentrations of nitric oxide and ornithine at day 110 of gestation, Arg at day 90 and 110 of gestation ( < 0.05, linear and quadratic) and total protein at day 110 of gestation ( < 0.05, linear) with increasing dietary SID Arg: Lys ratio. The results of our study indicated that increases in the dietary SID Arg: Lys ratio during gestation resulted in an increase in the number of piglets born alive, a decrease in birth intervals, and an improvement in immunity and colostrum composition. The optimal SID Arg: Lys ratio for gestating sows to maximize the number of piglets born alive was 1.25.
本研究的目的是确定最佳的标准回肠可消化精氨酸（SID Arg）：赖氨酸（Lys）比例，以最大化妊娠期间母猪的繁殖性能、免疫力和生化参数、初乳成分及其后代的性能。通过改变精氨酸或丙氨酸的添加水平（所有处理中总氮水平相同），将总共174头经产母猪随机分配到五个处理组，这些处理组的日粮SID Arg：Lys比例不同（0.91、1.02、1.14、1.25和1.38）。结果表明，提高日粮SID Arg：Lys比例可增加产活仔数（P<0.05，呈线性和二次曲线关系）。随着日粮SID Arg：Lys比例的增加，死胎数、产活仔数的出生体重变异、产仔间隔（P<0.05，呈线性和二次曲线关系）和木乃伊胎数（P<0.05，呈二次曲线关系）减少。折线回归分析表明，妊娠母猪最大化产活仔数的最佳SID Arg：Lys比例要求为1.25。随着日粮SID Arg：Lys比例的增加，初乳中的非脂固形物、总固形物、蛋白质和能量含量呈线性和二次曲线增加（P<0.05）。此外，随着日粮SID Arg：Lys比例的增加，妊娠90天时血浆中IgA（P<0.05，呈二次曲线关系）和IgM（P<0.05，呈线性和二次曲线关系）的浓度增加；妊娠110天时母猪血浆中IgG浓度增加（P<0.05，呈线性和二次曲线关系）。日粮SID Arg：Lys比例对妊娠90天时的血浆胰岛素水平有增加作用（P<0.05，呈线性和二次曲线关系）。此外，随着日粮SID Arg：Lys比例的增加，妊娠110天时血浆中一氧化氮和鸟氨酸浓度增加，妊娠90天和110天时精氨酸浓度增加（P<0.05，呈线性和二次曲线关系），妊娠110天时血浆总蛋白浓度增加（P<0.05，呈线性关系）。我们的研究结果表明，妊娠期间日粮SID Arg：Lys比例的增加导致产活仔数增加、产仔间隔缩短以及免疫力和初乳成分改善。妊娠母猪最大化产活仔数的最佳SID Arg：Lys比例为1.25。
