Effect of different litter size on the rate of postpartum uterine involution in hu sheep

In this study, we investigated the eff ects of diff erent litter sizes on the rate of uterine involution in Hu sheep. Using B-mode ultrasonography, we recorded changes in the uterine horn diameter and the maximum uterine caruncle diameter in 60 primiparous Hu sheep from days 0 to 45 postpartum. Th e...

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Main Authors: Zongling LIU, Wenqian ZHANG, Chunhao ZHU, Xi CHEN, Yukun ZHAO, Yanping WANG, Weibin ZENG
Format: Article
Language:English
Published: Kafkas University, Faculty of Veterinary Medicine 2022-03-01
Series:Kafkas Universitesi Veteriner Fakültesi Dergisi
Subjects:
Online Access:https://vetdergikafkas.org/pdf.php?id=2897
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author Zongling LIU
Wenqian ZHANG
Chunhao ZHU
Xi CHEN
Yukun ZHAO
Yanping WANG
Weibin ZENG
author_facet Zongling LIU
Wenqian ZHANG
Chunhao ZHU
Xi CHEN
Yukun ZHAO
Yanping WANG
Weibin ZENG
author_sort Zongling LIU
collection DOAJ
description In this study, we investigated the eff ects of diff erent litter sizes on the rate of uterine involution in Hu sheep. Using B-mode ultrasonography, we recorded changes in the uterine horn diameter and the maximum uterine caruncle diameter in 60 primiparous Hu sheep from days 0 to 45 postpartum. Th e uterine horn diameter decreased gradually postpartum from 79±1.42 mm at day 0 to 10.87±0.5 mm at day 45 with singleton parturition, from 91±6.58 mm at day 0 to 10.63±0.32 mm at day 45 with twin parturition, and from 107±3.67 mm at day 0 to 11±0.87 mm at day 45 with triplet parturition. Th e time to complete uterine involution postpartum was 30, 35 and 40 days postpartum in singleton, twin and triplet parturitions, respectively. (P<0.05). Th e maximum uterine caruncle diameter also decreased gradually from 12.43±0.91 mm at day 3 to 8.82±0.27 mm at day 10 with singleton parturition, from 12.14±1.19 mm at day 3 to 8.31±0.94 mm at day 10 with twin parturition, and from 12.5±0.66 mm at day 3 to 7.94±0.95 mm at day 10 with triplet parturition (P>0.05). Th us, diff erent litter sizes had a greater eff ect on postpartum uterine horn recovery than on the uterine caruncle. Furthermore, the rate of uterine involution in ewes with singleton parturition was significantly higher than that with triplet parturition. Our findings provide a reference for improving the reproductive performance of Hu sheep.
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spelling doaj.art-a767dca6a11645a29950ed9d9f5b92742023-06-19T06:28:21ZengKafkas University, Faculty of Veterinary MedicineKafkas Universitesi Veteriner Fakültesi Dergisi1309-22512022-03-0128227528010.9775/kvfd.2021.269652897Effect of different litter size on the rate of postpartum uterine involution in hu sheepZongling LIU0Wenqian ZHANG1Chunhao ZHU2Xi CHEN3Yukun ZHAO4Yanping WANG5Weibin ZENG6College of Animal Science and Technology, Shihezi University, 832003 Shihezi, Xinjiang, CHINACollege of Animal Science and Technology, Shihezi University, 832003 Shihezi, Xinjiang, CHINACollege of Animal Science and Technology, Shihezi University, 832003 Shihezi, Xinjiang, CHINACollege of Animal Science and Technology, Shihezi University, 832003 Shihezi, Xinjiang, CHINACollege of Animal Science and Technology, Shihezi University, 832003 Shihezi, Xinjiang, CHINACollege of Animal Science and Technology, Shihezi University, 832003 Shihezi, Xinjiang, CHINACollege of Animal Science and Technology, Shihezi University, 832003 Shihezi, Xinjiang, CHINAIn this study, we investigated the eff ects of diff erent litter sizes on the rate of uterine involution in Hu sheep. Using B-mode ultrasonography, we recorded changes in the uterine horn diameter and the maximum uterine caruncle diameter in 60 primiparous Hu sheep from days 0 to 45 postpartum. Th e uterine horn diameter decreased gradually postpartum from 79±1.42 mm at day 0 to 10.87±0.5 mm at day 45 with singleton parturition, from 91±6.58 mm at day 0 to 10.63±0.32 mm at day 45 with twin parturition, and from 107±3.67 mm at day 0 to 11±0.87 mm at day 45 with triplet parturition. Th e time to complete uterine involution postpartum was 30, 35 and 40 days postpartum in singleton, twin and triplet parturitions, respectively. (P<0.05). Th e maximum uterine caruncle diameter also decreased gradually from 12.43±0.91 mm at day 3 to 8.82±0.27 mm at day 10 with singleton parturition, from 12.14±1.19 mm at day 3 to 8.31±0.94 mm at day 10 with twin parturition, and from 12.5±0.66 mm at day 3 to 7.94±0.95 mm at day 10 with triplet parturition (P>0.05). Th us, diff erent litter sizes had a greater eff ect on postpartum uterine horn recovery than on the uterine caruncle. Furthermore, the rate of uterine involution in ewes with singleton parturition was significantly higher than that with triplet parturition. Our findings provide a reference for improving the reproductive performance of Hu sheep.https://vetdergikafkas.org/pdf.php?id=2897hu sheeplitter sizeuterine involutionultrasound
spellingShingle Zongling LIU
Wenqian ZHANG
Chunhao ZHU
Xi CHEN
Yukun ZHAO
Yanping WANG
Weibin ZENG
Effect of different litter size on the rate of postpartum uterine involution in hu sheep
Kafkas Universitesi Veteriner Fakültesi Dergisi
hu sheep
litter size
uterine involution
ultrasound
title Effect of different litter size on the rate of postpartum uterine involution in hu sheep
title_full Effect of different litter size on the rate of postpartum uterine involution in hu sheep
title_fullStr Effect of different litter size on the rate of postpartum uterine involution in hu sheep
title_full_unstemmed Effect of different litter size on the rate of postpartum uterine involution in hu sheep
title_short Effect of different litter size on the rate of postpartum uterine involution in hu sheep
title_sort effect of different litter size on the rate of postpartum uterine involution in hu sheep
topic hu sheep
litter size
uterine involution
ultrasound
url https://vetdergikafkas.org/pdf.php?id=2897
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AT xichen effectofdifferentlittersizeontherateofpostpartumuterineinvolutioninhusheep
AT yukunzhao effectofdifferentlittersizeontherateofpostpartumuterineinvolutioninhusheep
AT yanpingwang effectofdifferentlittersizeontherateofpostpartumuterineinvolutioninhusheep
AT weibinzeng effectofdifferentlittersizeontherateofpostpartumuterineinvolutioninhusheep