NDLI: Genetic aspects of maternal ability in sows.

Please wait, while we are loading the content...

Genetic aspects of maternal ability in sows.

Content Provider	CiteSeerX
Researcher	Grandinson, Katja
Abstract	The purpose of this thesis was to gain knowledge about the genetic background of different aspects of maternal ability in sows. Today’s selection for increased litter size at birth will put higher demands on the sow’s ability to take care of her litter, and may cause problems with increasing piglet mortality and decreasing piglet growth. This motivates inclusion of a measure of maternal ability into the breeding goal. The studied traits are different measures of piglet mortality, piglet birth weight, piglet growth, sow behaviour and sow body condition. Both direct genetic effects and maternal genetic effects influenced traits measured on the piglet. The maternal effect was more important than the direct effect for all traits measured prior to weaning. Piglet birth weight was favourably genetically correlated to survival of live born piglets. However, we found unfavourable genetic correlations between stillbirth and birth weight of the piglet. This indicates that selection for increased birth weight is not a recommendable strategy to improve piglet survival at birth. We also conclude that a breeding programme aiming at improving both pre-weaning survival and pre-weaning growth should include both these traits, as
File Format	PDF
Access Restriction	Open
Subject Keyword	Maternal Ability Genetic Aspect Piglet Growth Piglet Mortality Piglet Birth Weight Direct Genetic Effect Different Measure Direct Effect Litter Size Recommendable Strategy Pre-weaning Growth Different Aspect Breeding Programme Increased Birth Weight Studied Trait Piglet Survival Birth Weight Sow Ability Today Selection Breeding Goal Maternal Genetic Effect Sow Body Condition Genetic Background Pre-weaning Survival Maternal Effect Unfavourable Genetic Correlation
Content Type	Text
Resource Type	Thesis

Central Library (ISO-9001:2015 Certified)
Indian Institute of Technology Kharagpur
Kharagpur, West Bengal, India | PIN - 721302

See location in the Map
03222 282435
Mail: support@ndl.gov.in

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in