The correlation between body weight, body weight gain and blood parameters in pigs at birth and weaning

ABSTRACT The aim of study was to determine the relationship between metabolic parameters, body weight and body growth of piglets at birth and weaning. The experiment included 80 piglets obtained from F1 generation sows. Body weight was measured at birth (BW0), 24h (BW1) after birth and on day 25 (at weaning, BW2). Blood sampling was performed at the beginning of life (3rd day after birth) and at weaning (21st day after birth). BW0 and BW1 positively correlated with cholesterol and negatively with urea values at the beginning of life and RBC values at weaning. BW2 positively correlates with albumin and cortisol values at the beginning of life, total proteins, and globulins at weaning, and negatively correlates with erythrocyte values at weaning. Piglet growth from birth to weaning (BWG2-0) correlates positively with total proteins, albumin, and cortisol at the beginning of life and total proteins at weaning. ROC analysis shows that MCHC, TPROT, GLOB, CHOL and AST at the beginning of life can distinguish fast-growing from slow-growing piglets from birth to weaning period. The use of blood parameters enables early recognition of growth rate in piglets, which can help to optimize all further steps to achieve the best possible growth.

摘要 本研究旨在明确仔猪出生及断奶阶段的代谢参数、体重与体生长之间的关联。实验共纳入80头由F1代母猪所产的仔猪。分别于出生时（BW0）、出生后24小时（BW1）以及第25天（断奶时，BW2）测量仔猪体重。分别于生命早期（出生后第3天）及断奶时（出生后第21天）采集血液样本。分析结果显示，BW0与BW1与生命早期的胆固醇（CHOL）呈正相关，与同期尿素值呈负相关，且与断奶时的红细胞（Red Blood Cell, RBC）计数呈负相关。BW2与生命早期的白蛋白、皮质醇值呈正相关，与断奶时的总蛋白、球蛋白（GLOB）呈正相关，且与断奶时的红细胞计数呈负相关。仔猪从出生至断奶的生长量（BWG2-0）与生命早期的总蛋白、白蛋白及皮质醇，以及断奶时的总蛋白呈正相关。受试者工作特征（Receiver Operating Characteristic, ROC）分析表明，生命早期的平均红细胞血红蛋白浓度（Mean Corpuscular Hemoglobin Concentration, MCHC）、总蛋白（TPROT）、球蛋白、胆固醇以及天冬氨酸氨基转移酶（AST）可区分出生至断奶期间生长快速与生长缓慢的仔猪。血液参数检测可实现仔猪生长速率的早期识别，有助于优化后续所有干预步骤以达成最优生长效果。