A Percentage of Sows Mated within Six Days Post Weaning in Four Three-Month Periods in Commercial Breeding Herds That were Performing Differently
نویسندگان
چکیده
منابع مشابه
network of phonological rules in lori dialect of andimeshk: a study within the framework of post-generative approach.
پژوهش حاضر ارائه ی توصیفی است از نظام آوایی گویش لری شهر اندیمشک، واقع در شمال غربی استان خوزستان. چهارچوب نظری این پژوهش، انگاره ی پسازایشی جزءمستقل می باشد. این پایان نامه شامل موارد زیر است: -توصیف آواهای این گویش به صورت آواشناسی سنتی و در قالب مختصه های زایشی ممیز، همراه با آوانوشته ی تفصیلی؛ -توصیف نظام آوایی گویش لری و قواعد واجی آن در چهارچوب انگاره ی پسازایشی جزءمستقل و معرفی برهم کن...
Factors for improving reproductive performance of sows and herd productivity in commercial breeding herds
We review critical factors associated with reproductive performance of female breeding pigs, their lifetime performance and herd productivity in commercial herds. The factors include both sow-level and herd-level factors. High risk sow-level groups for decreasing reproductive performance of female pigs are low or high parity, increased outdoor temperature, decreased lactation feed intake, singl...
متن کاملStudy on Reproductive Performance of Breeding Sows and Ultrasound Monitoring of Ovarian Follicle Activity and Ovulation of Post-Weaning Sows in a Commercial Pig Farm of Central Ethiopia
Copyright ©2017 Yilma T. This is an open access article distributed under the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Volume 2 : Issue 3 Article Ref. #: 1000VMOJ2119 Study on Reproductive Performance of Breeding Sows and Ultrasound Monitoring of...
متن کاملBy-parity nonproductive days and mating and culling measurements of female pigs in commercial breeding herds.
The objectives of this study were to determine by-parity nonproductive female days (NPD or NPDs) and mating and culling measurements, to determine correlations between by-parity NPDs, mating and culling measurements and herd productivity measurements, and to compare by-parity NPDs between three herd groups (105 herds) with differing reproductive productivities. NPD was defined as the number of ...
متن کاملImpact of Mated Female Nonproductive Days in Breeding Herd after Porcine Epidemic Diarrhea Virus Outbreak
Porcine epidemic diarrhea virus (PEDV) is an important pathogen that has a significant economic impact on the swine industry by imposing a high rate of mortality in suckling piglets. However, limited information on the productivity values of gilts and sows infected with PEDV is available. Here, we evaluate the productivity index in gilts and sows during the 1-year period before (19 January 2013...
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ژورنال
عنوان ژورنال: Journal of the Japan Veterinary Medical Association
سال: 2010
ISSN: 0446-6454,2186-0211
DOI: 10.12935/jvma.63.187