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Impact of Management Systems on ReproductivePerformance, Hematological Profiles, Rectum Temperature, Fecal Score and Fecal Microbiota in the 2nd Parity Sows
Sow welfare in different housing systems may greatly impact the reproductive performance. A total of 90 sows (Landrace×Yorkshire; parity=2) were used to assess the effect of housing systems. Pigs were managed from the 3rd week after pregnancy to 1 week before delivery and distributed into 1 of 3 housing systems (30 rep./trt. with 1 sow/rep. pen). Housing systems were: CON, stall management system; GM, group management system; SM, shoulder management system. Results showed that the number of primary survival piglets per sow and weaned survival piglets per sow were higher (P<0.05) in GM and SM compared to CON. Moreover, BW loss from farrowing to weanling was reduced (P<0.05) in GM and SM than CON. Stall management system occurred involved with higher backfat thickness loss which was followed by SM and GM (P<0.05). Body weight of weaning pigs at weaning and 3rd week after farrowing was significantly higher in CON than that in GM and SM (P<0.05). Overall and from 2nd week to weanling, ADG of weaning pigs was significantly higher in GM and SM compared to that in CON (P<0.05). In addition, blood cortsol, and norephineprin were increased (P<0.05) in CON compared with that in GM and SM sows at d 50 of gestation. At the same time, blood ephineprine was higher in GM compared to that in CON (P<0.05). In ddition, group management and shoulder management reduced the blood cortsol, ephineprone and norephineprin at d 108 of gestation compared to that in CON (P<0.05). Blood cortisol value was also lower (P<0.05) in SM compared to CON. In conclusion, results implied that stall management and shoulder management system improved reproductive performance in the 2nd parity sows. It also indicated that GM and SM involved in lowering the blood parameters without any changes in the rectal temperature and fecal characteristics.
Table 1. Effect of housing systems on performance in sows |
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Items |
Date/Period |
CON |
GM |
SM |
SE |
Litter size |
At birth |
10.3b |
11.7a |
11.5a |
1.1 |
|
Weaning |
9.8b |
11.5a |
11.2a |
1.0 |
Sow BW, kg |
After farrowing |
196.2 |
198.3 |
195.8 |
2.5 |
|
Weanling |
183.0 |
197.5 |
184.5 |
2.1 |
Sow BW loss, kg |
From farrowing to weaning |
13.2a |
10.8b |
11.3b |
1.1 |
Sow backfat thickness, mm |
After farrowing |
24.5 |
23.5 |
24.5 |
0.4 |
|
Weaning |
19.2 |
20.3 |
21.0 |
0.3 |
Sow backfat thickness loss, mm |
From farrowing to weaning |
4.8a |
3.2b |
3.5b |
0.3 |
Keywords: management, sow, welfare