Bibliographic Details
| Title: |
Effects of Pigs' Weaning Weight on Growth Performance and Blood Immunological, Antioxidant, and Gut Permeability Parameters in Early Nursery Period. |
| Authors: |
Kwon, Chan Ho1 (AUTHOR), Safaie, Eva S.1 (AUTHOR), Torres, Jannell A.1 (AUTHOR), Jang, Young Dal1 (AUTHOR) youngdal.jang@uga.edu |
| Source: |
Animals (2076-2615). Apr2025, Vol. 15 Issue 8, p1119. 12p. |
| Subject Terms: |
*OXIDANT status, *IMMUNOGLOBULIN G, *SUPEROXIDE dismutase, *OXIDATIVE stress, *BODY weight, *ANIMAL weaning, *SWINE growth |
| Abstract: |
Simple Summary: Due to increasing litter sizes in modern hyperprolific sows, the weaning weight may decrease, resulting in pigs becoming more prone to weaning stress. A study was conducted to evaluate how pigs' weaning weight affects their growth, immunity, antioxidant, and gut permeability parameters with 48 pigs who were weaned at 21 d of age in a 14 d growth trial. High-weaning-weight pigs had a greater growth rate than low-weaning-weight pigs in the overall early nursery period, although the growth rate was similar in the first week postweaning. High-weaning-weight pigs had higher blood immunoglobulin levels at d 7 postweaning, while they had a better antioxidant status and lower gut permeability at d 14 postweaning compared with low-weaning-weight pigs. The weaning weight was positively correlated with antioxidant status and immunoglobulin levels after weaning, but negatively correlated with gut permeability. Although the weaning weight did not affect the growth rate of pigs in the first week after weaning, a high weaning weight could result in a high growth rate, antioxidant status, and immunoglobulin levels, while lowering the gut permeability in the early nursery period. This study was conducted to investigate the effect of pigs' weaning weight (WW) on their growth performance and blood immunological, antioxidant, and gut permeability parameters in the early nursery period. At weaning, a total of 48 pigs, weaned at 20.7 ± 0.74 d of age, were allotted to two WW categories—HWW, with a WW over 5.5 kg (average 6.79 ± 0.53 kg), and LWW, with a WW of less than 5.5 kg (average 4.43 ± 0.56 kg)—for a 14 d postweaning period. The WW did not affect the average daily gain (ADG) in d 0–7 postweaning or the plasma malondialdehyde levels over the entire period. HWW pigs had a higher body weight and ADG than LWW pigs (p < 0.05) in the overall period, with greater plasma immunoglobulin G (p < 0.05) and A (p = 0.06, tendency) levels at d 7 postweaning and superoxide dismutase activity at d 14 postweaning (p = 0.05, tendency), with positive correlations with the WW (p < 0.05). HWW pigs had lower plasma diamine oxidase (p < 0.05) and d-lactate (p = 0.06, tendency) levels at d 14 postweaning, with a negative correlation with the WW (p < 0.05). In conclusion, although there was no effect of the WW on growth rate in the first week postweaning and oxidative stress in the early nursery period, HWW pigs exhibited greater growth performance, immunoglobulin levels, and antioxidant capacity but lower gut permeability than LWW pigs in the early nursery period. [ABSTRACT FROM AUTHOR] |
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