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Conceptus development in large white and prolific Chinese Meishan pigs.
J Reprod Fertil. 1988 Sep; 84(1):37-42.JR

Abstract

Large White (LW) and Meishan (MS) gilts were killed on Days 8, 10, 11, 12, 14 and 30 of gestation. Mean diameters (mm) for MS and LW conceptuses, respectively, were: Day 8, 0.45 and 0.69; Day 10, 2.7 and 1.9; Day 11, 5.3 and 2.7, with the differences among days being affected by breed (P less than 0.01). Variation in diameter among conceptuses from LW gilts was greater (P less than 0.01) than that for MS gilts on Days 8-11, respectively: Day 8, 20 and 46%; Day 10, 29 and 38%; and Day 11, 22 and 44%. Conceptuses had elongated in 3 of 5 MS and 1 of 4 LW gilts on Day 11, 6 and 6 MS and 2 of 4 LW gilts on Day 12 and all gilts of both breeds on Day 14. These results indicate that conceptuses of MS gilts develop more rapidly and more uniformly between Days 8 and 14 of gestation. Overall, embryonic survival for Days 8-12 for gilts not having elongated conceptuses was 90.2% for MS and 73.2% for LW gilts (P less than 0.01). On Day 30 of gestation, embryonic survival was also higher (P less than 0.01) for MS (89%) than LW (55%) gilts. However, embryonic weight, crown-rump length, placental length, allantoic fluid volume, amniotic fluid volume, as well as total glucose, fructose and protein in allantoic fluid were not affected by breed. Placental weight was greater (P less than 0.01) for LW gilts. Uterine development at Day 30 of gestation, based on total length and weight of uterine horns, width of uterine horns, total endometrial surface area and total endometrial weight was greater (P less than 0.01) for LW gilts.(ABSTRACT TRUNCATED AT 250 WORDS)

Authors+Show Affiliations

Department of Animal Science, University of Florida, Gainesville 32611.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

3184056

Citation

Bazer, F W., et al. "Conceptus Development in Large White and Prolific Chinese Meishan Pigs." Journal of Reproduction and Fertility, vol. 84, no. 1, 1988, pp. 37-42.
Bazer FW, Thatcher WW, Martinat-Botte F, et al. Conceptus development in large white and prolific Chinese Meishan pigs. J Reprod Fertil. 1988;84(1):37-42.
Bazer, F. W., Thatcher, W. W., Martinat-Botte, F., & Terqui, M. (1988). Conceptus development in large white and prolific Chinese Meishan pigs. Journal of Reproduction and Fertility, 84(1), 37-42.
Bazer FW, et al. Conceptus Development in Large White and Prolific Chinese Meishan Pigs. J Reprod Fertil. 1988;84(1):37-42. PubMed PMID: 3184056.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Conceptus development in large white and prolific Chinese Meishan pigs. AU - Bazer,F W, AU - Thatcher,W W, AU - Martinat-Botte,F, AU - Terqui,M, PY - 1988/9/1/pubmed PY - 1988/9/1/medline PY - 1988/9/1/entrez SP - 37 EP - 42 JF - Journal of reproduction and fertility JO - J Reprod Fertil VL - 84 IS - 1 N2 - Large White (LW) and Meishan (MS) gilts were killed on Days 8, 10, 11, 12, 14 and 30 of gestation. Mean diameters (mm) for MS and LW conceptuses, respectively, were: Day 8, 0.45 and 0.69; Day 10, 2.7 and 1.9; Day 11, 5.3 and 2.7, with the differences among days being affected by breed (P less than 0.01). Variation in diameter among conceptuses from LW gilts was greater (P less than 0.01) than that for MS gilts on Days 8-11, respectively: Day 8, 20 and 46%; Day 10, 29 and 38%; and Day 11, 22 and 44%. Conceptuses had elongated in 3 of 5 MS and 1 of 4 LW gilts on Day 11, 6 and 6 MS and 2 of 4 LW gilts on Day 12 and all gilts of both breeds on Day 14. These results indicate that conceptuses of MS gilts develop more rapidly and more uniformly between Days 8 and 14 of gestation. Overall, embryonic survival for Days 8-12 for gilts not having elongated conceptuses was 90.2% for MS and 73.2% for LW gilts (P less than 0.01). On Day 30 of gestation, embryonic survival was also higher (P less than 0.01) for MS (89%) than LW (55%) gilts. However, embryonic weight, crown-rump length, placental length, allantoic fluid volume, amniotic fluid volume, as well as total glucose, fructose and protein in allantoic fluid were not affected by breed. Placental weight was greater (P less than 0.01) for LW gilts. Uterine development at Day 30 of gestation, based on total length and weight of uterine horns, width of uterine horns, total endometrial surface area and total endometrial weight was greater (P less than 0.01) for LW gilts.(ABSTRACT TRUNCATED AT 250 WORDS) SN - 0022-4251 UR - https://www.unboundmedicine.com/medline/citation/3184056/Conceptus_development_in_large_white_and_prolific_Chinese_Meishan_pigs_ DB - PRIME DP - Unbound Medicine ER -