Gvozdanović Kristina, Čuljak Vice, Margeta Vladimir, Kušec Ivona Djurkin, Antunović Boris, Galović Dalida, Kušec Goran
Department for Animal Science and Biotechnology, Faculty of Agrobiotechnical Sciences Osijek, 31000 Osijek, Croatia.
State Inspectorate, Šubičeva 29, 10000 Zagreb, Croatia.
Animals (Basel). 2025 Jun 18;15(12):1802. doi: 10.3390/ani15121802.
The aim of this study was to investigate the influence of genotype (GT) and seasonality (NP) on the quality parameters of sow colostrum and evaluate the efficiency of the radial immunodiffusion (RID) analysis and the Brix refractometer in determining the IgG concentration. This study was conducted on 240 sows that originated from two genotypes, namely GT1 (TOPIGS, n = 120) and GT2 (Pig Improvement Company, n = 120), during the three farrowing periods: the winter farrowing period (WNP, n = 80), the summer farrowing period (SMP, n = 80) and the spring farrowing period (SSP, n = 80). The significant interaction effect was observed for protein ( < 0.0001), lactose ( < 0.05) and non-fat solids (SNT) ( < 0.001). At the same time, the interaction effect influenced the IgG concentration measured with the Brix refractometer ( < 0.0001) and RID ( < 0.0001). Pearson's correlation coefficient showed that Brix percentage was positively correlated with RID results (r = 0.52, < 0.0001), while the Bland-Altman plots indicated a mean bias of -1.93. Partial eta-squared analysis (η) showed that the genotype explained the largest proportion of variance in fat content (η = 0.136) and IgG concentration (η = 0.164), while interaction effects were largest for protein (η = 0.072). The results of this study show that genotype and seasonality influence sow colostrum quality, which indicates the importance of genotype-seasonality interactions in breeding programs for optimizing the colostrum quality and piglet survival.
本研究的目的是调查基因型（GT）和季节性（NP）对母猪初乳质量参数的影响，并评估径向免疫扩散（RID）分析和糖度折射仪在测定IgG浓度方面的效率。本研究对来自两种基因型的240头母猪进行了研究，即GT1（托佩克猪，n = 120）和GT2（猪改良公司，n = 120），在三个产仔期进行：冬季产仔期（WNP，n = 80）、夏季产仔期（SMP，n = 80）和春季产仔期（SSP，n = 80）。观察到蛋白质（< 0.0001）、乳糖（< 0.05）和非脂固体（SNT）（< 0.001）存在显著的交互作用。同时，交互作用影响了用糖度折射仪（< 0.0001）和RID（< 0.0001）测量的IgG浓度。Pearson相关系数表明，糖度百分比与RID结果呈正相关（r = 0.52，< 0.0001），而Bland-Altman图显示平均偏差为 -1.93。偏η²分析（η）表明，基因型在脂肪含量（η = 0.136）和IgG浓度（η = 0.164）的方差中解释的比例最大，而蛋白质的交互作用影响最大（η = 0.072）。本研究结果表明，基因型和季节性会影响母猪初乳质量，这表明基因型 - 季节性相互作用在优化初乳质量和仔猪存活率的育种计划中的重要性。
