Maternal responses to daily maternal porcine somatotropin injections during early-mid pregnancy or early-late pregnancy in sows and gilts

Gatford, K. L., Smits, R. J., Collins, C. L., Argent, C., De Blasio, M. J., Roberts, C. T., Nottle, M. B., Kind, K. L. and Owens, J. A. 2010, Maternal responses to daily maternal porcine somatotropin injections during early-mid pregnancy or early-late pregnancy in sows and gilts, Journal of animal science, vol. 88, no. 4, pp. 1365-1378, doi: 10.2527/jas.2009-2265.

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Title Maternal responses to daily maternal porcine somatotropin injections during early-mid pregnancy or early-late pregnancy in sows and gilts
Author(s) Gatford, K. L.
Smits, R. J.
Collins, C. L.
Argent, C.
De Blasio, M. J.
Roberts, C. T.
Nottle, M. B.
Kind, K. L.
Owens, J. A.ORCID iD for Owens, J. A. orcid.org/0000-0002-7498-1353
Journal name Journal of animal science
Volume number 88
Issue number 4
Start page 1365
End page 1378
Total pages 14
Publisher Oxford University Press
Place of publication Oxford, Eng.
Publication date 2010-04
ISSN 1525-3163
Keyword(s) Animals
Animals, Newborn
Birth Weight
Body Weight
Eating
Female
Growth Hormone
Lactation
Male
Parity
Pregnancy
Pregnancy, Animal
Swine
Science & Technology
Life Sciences & Biomedicine
Agriculture, Dairy & Animal Science
Agriculture
litter size
pig
somatotropin
subsequent reproduction
INTRAUTERINE GROWTH-RETARDATION
FETAL-GROWTH
POSTNATAL-GROWTH
PLACENTAL GROWTH
BODY-COMPOSITION
IGF-II
EXOGENOUS SOMATOTROPIN
HORMONE TREATMENT
UNDERFED PIGS
BIRTH-WEIGHT
Summary Piglet neonatal survival and postnatal growth and efficiency are positively related to birth weight. In gilts, daily maternal porcine ST (pST) injections from d 25 to 100 (term approximately 115 d), but not d 25 to 50, of pregnancy increase progeny birth weight. Daily maternal pST injections from d 25 to 50 increase fetal weight at d 50 in gilts and sows. We therefore hypothesized that daily pST injections from d 25 to 100, but not d 25 to 50, of pregnancy would increase birth weight similarly in both parities. Landrace x Large White gilts and sows were uninjected (controls) or were injected daily with pST (gilts: 2.5 mg/d; sows: 4.0 mg/d, each approximately 15 microg of pST/kg per day) from d 25 to 50 or 100 of pregnancy. Litter size and BW were recorded at birth, midlactation, and weaning. Dams were followed through the subsequent mating and pregnancy. Maternal pST injections from d 25 to 100, but not d 25 to 50, increased mean piglet birth weight by 11.6% in sows (P
Language eng
DOI 10.2527/jas.2009-2265
Field of Research 07 Agricultural And Veterinary Sciences
06 Biological Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, American Society of Animal Science
Persistent URL http://hdl.handle.net/10536/DRO/DU:30116797

Document type: Journal Article
Collection: Office of the Deputy Vice-Chancellor (Research)
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