RELATION OF LITTER SIZE AND OTHER FACTORS TO THE DURATION OF GESTATION IN THE PIG

1 June 1964

journal article
letter
Published by Bioscientifica in Reproduction

Vol. 7 (3) , 405-407
https://doi.org/10.1530/jrf.0.0070405

Abstract

The negative correlation between the number of foetuses and the length of gestation characteristic of most multiparous species is not found in the pig. This observation, reported in previous studies, was confirmed using 1450 records from the Duroc and Hampshire breeds. The gestation period was also unrelated to either the number of late foetal deaths or to the weight and fatness of the sow but prolonged gestation at first parturition reduced the probability of a second litter.

Keywords

BODY WEIGHT
EXPERIMENTAL LAB STUDY
FETAL DEATH
PREGNANCY
PREGNANCY, ANIMAL
SWINE

This publication has 2 references indexed in Scilit:

REGULATION OF THE GESTATION PERIOD IN MICE
Reproduction, 1963
EFFECT OF PATERNAL IRRADIATION ON 154 DAY WEIGHT IN SWINE
Genetics, 1962