Document Detail


A field investigation of intra-cervical insemination with reduced sperm numbers in gilts.
MedLine Citation:
PMID:  16420959     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A novel insemination catheter with a smaller polyurethane tip for deeper insertion into the cervix of gilts was compared with the conventional catheter. The novel catheter could be inserted 31.4 mm deeper than the conventional catheter into the gilt cervix, but the difference diminished with parity until the sixth parity when there was no difference in penetration depth between the catheters. In Experiment 1, cyclic gilts were inseminated upon display of oestrus (back pressure test) in the presence of a boar (0 h) and 24 h later. The control group (n = 300) were inseminated with 2 x 10(9) total spermatozoa and the treatment group (n = 300) with 1 x 10(9) total spermatozoa per inseminate, in both cases utilising the novel insemination catheter. No significant differences were observed for farrowing rate and litter size, the values of which were those expected for natural mating. In Experiment 2, 66 cyclic gilts were subjected to the same heat detection and service regime as for Experiment 1 but were served with <1 x 10(9) total sperm cells per inseminate using the new device. Conception rates and embryo counts were recorded. Conception rate declined with <500 x 10(6) spermatozoa, and number of embryos (a reflection of potential litter size) was significantly reduced. Use of the new catheter for gilts with 1 x 10(9) total sperm cells per inseminate will achieve commercially acceptable fertility and fecundity levels, and offer substantial commercial benefits with more rapid genetic gains.
Authors:
J R Behan; P F Watson
Related Documents :
20164739 - Validation of the andon kd-575 automated blood pressure monitor according to the europe...
16271689 - The influence of age on pressure perception of static and moving two-point discriminati...
10362889 - Evaluation of the schiller br-102 ambulatory blood pressure system according to the pro...
10147799 - Bioeffects in echocardiography.
15923819 - Validation of the omron mx3 plus oscillometric blood pressure monitoring device accordi...
11374769 - Development of a new left ventricular assist device: the dynamic aortic valve.
19174789 - Hyperdynamic upper esophageal sphincter pressure: a manometric observation in patients ...
18182409 - The impact of sex in primary glomerulonephritis.
1239719 - Circulatory and respiratory adaptation in man to acute withdrawal and reinfusion of blood.
Publication Detail:
Type:  Journal Article     Date:  2006-01-18
Journal Detail:
Title:  Theriogenology     Volume:  66     ISSN:  0093-691X     ISO Abbreviation:  Theriogenology     Publication Date:  2006 Jul 
Date Detail:
Created Date:  2006-06-26     Completed Date:  2007-07-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0421510     Medline TA:  Theriogenology     Country:  United States    
Other Details:
Languages:  eng     Pagination:  338-43     Citation Subset:  IM    
Affiliation:
Department of Veterinary Basic Sciences, The Royal Veterinary College, Royal College Street, London NW1 0TU, UK.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Animals
Female
Fertility / physiology
Insemination, Artificial / instrumentation,  methods,  veterinary*
Litter Size*
Male
Parity
Pregnancy
Pregnancy Rate*
Sperm Count / veterinary*
Swine / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Development, freezability and amino acid consumption of bovine embryos cultured in synthetic oviduct...
Next Document:  The effect of dietary supplementation with blueberry, alpha-tocopherol or astaxanthin on oxidative s...