Seasonal influence on follicular and luteal dynamics in dairy cows

IF 0.2 4区农林科学 Q4 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Indian Journal of Animal Sciences Pub Date : 2023-10-31 DOI:10.56093/ijans.v93i11.129728

HARISH KUMAR, PRAVESH KUMAR, AKSHAY SHARMA, PURURAVA SHARMA, VIJENDER NEGI, PANKAJ SOOD

{"title":"Seasonal influence on follicular and luteal dynamics in dairy cows","authors":"HARISH KUMAR, PRAVESH KUMAR, AKSHAY SHARMA, PURURAVA SHARMA, VIJENDER NEGI, PANKAJ SOOD","doi":"10.56093/ijans.v93i11.129728","DOIUrl":null,"url":null,"abstract":"The objective of study was to investigate the influence of season, viz. summer, winter, and isothermic (spring and autumn season), on follicular and luteal dynamics in dairy cows. Thirty dairy cows (n=10 in each season) were subjected to the ultrasonographic examination of ovarian structures, i.e. follicle and corpus luteum, during two- and three-follicular waves in an estrous cycle using B-mode and colour doppler mode of ultrasonography. The daily temperature-humidity index (THI) was recorded to envisage its variation among different seasons. In results, the size of the dominant follicle was recorded to be significantly different in all seasons during the second follicular wave. However, all other parameters for follicle, i.e. day of wave onset, length of growth phase, duration of dominance, the maximum diameter of the largest sub-ordinate follicle, as well as luteal morphometric analysis had no significant difference among different seasons. On the other part, the THI varied significantly in different seasons with maximum THI in the summer (72.54), followed by the isothermic (64.7) and lowest in the winter season (54.12). As a part of summation, the seasonal impact was barely noteworthy on different aspects of follicular and luteal dynamics except for the size of dominant and sub-ordinate follicle in dairy cows.","PeriodicalId":13507,"journal":{"name":"Indian Journal of Animal Sciences","volume":"33 ","pages":"0"},"PeriodicalIF":0.2000,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Indian Journal of Animal Sciences","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.56093/ijans.v93i11.129728","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"AGRICULTURE, DAIRY & ANIMAL SCIENCE","Score":null,"Total":0}

引用次数: 0

Abstract

The objective of study was to investigate the influence of season, viz. summer, winter, and isothermic (spring and autumn season), on follicular and luteal dynamics in dairy cows. Thirty dairy cows (n=10 in each season) were subjected to the ultrasonographic examination of ovarian structures, i.e. follicle and corpus luteum, during two- and three-follicular waves in an estrous cycle using B-mode and colour doppler mode of ultrasonography. The daily temperature-humidity index (THI) was recorded to envisage its variation among different seasons. In results, the size of the dominant follicle was recorded to be significantly different in all seasons during the second follicular wave. However, all other parameters for follicle, i.e. day of wave onset, length of growth phase, duration of dominance, the maximum diameter of the largest sub-ordinate follicle, as well as luteal morphometric analysis had no significant difference among different seasons. On the other part, the THI varied significantly in different seasons with maximum THI in the summer (72.54), followed by the isothermic (64.7) and lowest in the winter season (54.12). As a part of summation, the seasonal impact was barely noteworthy on different aspects of follicular and luteal dynamics except for the size of dominant and sub-ordinate follicle in dairy cows.

查看原文本刊更多论文

季节对奶牛卵泡和黄体动态的影响

本研究的目的是探讨季节(夏季、冬季和等温季节(春季和秋季)对奶牛卵泡和黄体动力学的影响。采用b超和彩色多普勒超声对30头奶牛(每季10头)在发情周期的2次和3次卵泡波期间的卵巢结构(即卵泡和黄体)进行超声检查。记录日温湿指数(THI)，设想其在不同季节的变化。结果显示，在第二次卵泡波的各个季节，优势卵泡的大小都有显著差异。而卵泡的其他参数(起波日、生长期长度、优势持续时间、最大次卵泡最大直径、黄体形态计量学分析等)在不同季节间无显著差异。另一方面，不同季节THI差异显著，夏季THI最大(72.54)，其次是等温(64.7)，冬季最低(54.12)。综上所述，除了奶牛的显性和次级卵泡大小外，季节对卵泡和黄体动力学的其他方面的影响几乎不值得注意。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Indian Journal of Animal Sciences 农林科学-奶制品与动物科学

CiteScore

0.60

自引率

25.00%

发文量

220

审稿时长

8 months

期刊介绍： Articles published in The Indian Journal of Animal Sciences encompass a broad range of research topics in animal health and production related to cattle, buffalo, sheep, goat, camel, equines, pig, rabbit, yak, mithun, poultry and fisheries. Studies involving wildlife species and laboratory animal species that address fundamental questions about their biology will also be considered for publication. All manuscripts must present some new development and must be original, timely, significant and scientifically excellent. Papers will be rejected if standards of care of, or procedures performed on animals are not up to those expected of humane veterinary scientists. At a minimum, standards must meet the International Guiding Principles for Biomedical Research involving Animals, as issued by the Council for International Organizations of Medical Sciences. (C.I.O.M.S., c/o WHO, CH 1211 Geneva 27, Switzerland). Articles reporting new animal disease must follow GOI directive as given in detail in Guidelines to Authors.