Otto M A, Machado A P, Moreira L P, Bernardi M L, Coutinho M L, Vaz I S, Wentz I, Bortolozzo F P
Setor de Suínos, Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil.
Departamento de Zootecnia, Faculdade de Agronomia, UFRGS, Porto Alegre, Brazil.
Reprod Domest Anim. 2017 Oct;52(5):749-755. doi: 10.1111/rda.12975. Epub 2017 Apr 10.
The consumption of colostrum at a low level can compromise the survival and growth of piglets. Therefore, this study aimed to evaluate the effect of farrowing induction on colostrum yield, IgG concentration and the survival and performance of piglets until the weaning. Sows of parity 3 to 7 were assigned into two groups: Control (n = 48), sows with spontaneous farrowing; and induction (n = 48), sows induced to farrow on day 114 of gestation with a PGF analogue. Colostrum and blood samples were collected from the sows, at farrowing and 24 hr later. Blood samples from the piglets were collected at 24 hr after birth. The performance of the piglets was evaluated in a subsample of 28 litters from each group. All piglets were weighed at 7, 14 and 20 days of age. The farrowing length, the number of piglets born alive, stillborn piglets, weight at birth, litter weight at birth and colostrum yield were not significantly affected (p > .05) by farrowing induction. There was no difference between the groups (p > .05) in the percentage of sows with obstetric interventions. Serum IgG concentration, in both sows and piglets, and colostrum IgG concentration were similar between the groups (p > .05). Furthermore, survival rate, piglet weight and litter weight at 7, 14 and 20 days of age were also similar between the groups (p > .05). Therefore, it can be concluded that the farrowing induction performed on day 114 of gestation does not affect the colostrum yield, the IgG concentration in colostrum and serum of piglets, and the litter performance until the weaning.
低水平初乳摄入会影响仔猪的存活和生长。因此，本研究旨在评估引产对初乳产量、免疫球蛋白G（IgG）浓度以及仔猪断奶前存活和生长性能的影响。将3至7胎次的母猪分为两组：对照组（n = 48），自然分娩的母猪；引产组（n = 48），在妊娠第114天用前列腺素F2α（PGF）类似物引产的母猪。在分娩时和分娩后24小时采集母猪的初乳和血液样本。在仔猪出生后24小时采集其血液样本。从每组的28窝仔猪中抽取子样本评估仔猪的生长性能。所有仔猪在7日龄、14日龄和20日龄时称重。引产对分娩时长、出生存活仔猪数、死产仔猪数、出生体重、出生窝重和初乳产量均无显著影响（p > 0.05）。两组间接受产科干预的母猪比例无差异（p > 0.05）。两组母猪和仔猪的血清IgG浓度以及初乳IgG浓度相似（p > 0.05）。此外，两组仔猪在7日龄、14日龄和20日龄时的存活率、仔猪体重和窝重也相似（p > 0.05）。因此，可以得出结论，在妊娠第114天进行引产不影响初乳产量、仔猪初乳和血清中的IgG浓度，以及断奶前的窝仔性能。
