Škrlep Martin, Poklukar Klavdija, Vrecl Milka, Brankovič Jana, Čandek-Potokar Marjeta
Agricultural Institute of Slovenia, Hacquetova ulica 17, SI-1000 Ljubljana, Slovenia.
Veterinary Faculty, Institute of Preclinical Sciences, University of Ljubljana, Gerbičeva 60, SI-1000 Ljubljana, Slovenia.
Animals (Basel). 2024 Nov 19;14(22):3331. doi: 10.3390/ani14223331.
This study compared the performance, meat quality and adipose tissue characteristics of Krškopolje pigs and modern hybrid pigs under identical rearing conditions, besides examining the effects of dietary protein reduction in both genotypes. A total of 29 pigs (14 Krškopolje and 15 hybrids) were assigned to litter into two dietary groups (high and low protein). The low-protein diet for hybrid pigs corresponded to the high-protein diet for Krškopolje pigs. All diets were iso-energetic. Dietary protein reduction decreased growth rate and muscle development in modern hybrids but had no significant impact on performance, quality or metabolic traits in Krškopolje pigs. Genotype differences revealed that Krškopolje pigs had lower growth rates, less lean and more fat deposition, as reflected in thicker subcutaneous and higher intramuscular fat compared to modern hybrids. Krškopolje pigs also exhibited higher myoglobin concentration and fatty acid saturation. Lipogenic enzyme activity and histo-morphological traits behaved in a tissue-specific manner but still indicated a greater lipogenic potential in Krškopolje pigs. This study provides valuable insights into breed-specific responses to dietary changes and highlights the unique characteristics of Krškopolje pigs.
本研究在相同饲养条件下比较了克尔斯科波列猪和现代杂交猪的生产性能、肉质及脂肪组织特征，同时研究了两种基因型猪日粮蛋白质减少的影响。总共29头猪（14头克尔斯科波列猪和15头杂交猪）按窝分配到两个日粮组（高蛋白和低蛋白）。杂交猪的低蛋白日粮相当于克尔斯科波列猪的高蛋白日粮。所有日粮能量相同。日粮蛋白质减少降低了现代杂交猪的生长速度和肌肉发育，但对克尔斯科波列猪的生产性能、品质或代谢性状没有显著影响。基因型差异表明，与现代杂交猪相比，克尔斯科波列猪生长速度较低，瘦肉较少，脂肪沉积较多，皮下脂肪更厚，肌内脂肪含量更高。克尔斯科波列猪还表现出较高的肌红蛋白浓度和脂肪酸饱和度。生脂酶活性和组织形态学特征呈现组织特异性，但仍表明克尔斯科波列猪具有更大的生脂潜力。本研究为不同品种对日粮变化的反应提供了有价值的见解，并突出了克尔斯科波列猪的独特特征。
