Association of MC4R and LEPR loci with reproductive performance and milk composition of sows
Journal Title: Animal Science Papers and Reports - Year 2015, Vol 33, Issue 3
Abstract
Porcine MC4R and LEPR gene polymorphisms have been implicated in traits associated with feed intake and carcass fatness. These genes could also indirectly regulate reproductive processes. The objective of this study was to determine the MC4R and LEPR effects on basic components of colostrum and milk from sows on their reproductive performance. The experiment was performed on 230 sows of breeds used in the breeding program as a maternal line: Polish Large White (PLW) and Polish Landrace (PL). The animals were maintained under the same feeding and housing conditions, according to the test station procedure and they were adapted for use as lactating sows. Colostrum and milk of sows were collected at 1, 7, 14 and 21 days of lactation to assay solids, total protein, fat and lactose. Data on piglet rearing performance were collected at 1, 7 and 21 days of lactation. The present study showed that MC4R and LEPR genes affected carcass fat deposition in sows and influenced production of nutrient-rich milk. Sows of the MC4RAA genotype, as well as sows of the LEPRBB genotype, characterized by a greater backfat thickness, produced colostrum with a lower content of fat, protein and solids. In addition, the fact that the investigated polymorphisms have no effect on piglet rearing results suggests that these markers could be used in selecting pigs for decreased backfat thickness, without fear of reducing the quality of milk and thereby piglet rearing performance.
Authors and Affiliations
Magdalena Szyndler-Nędza, Katarzyna Ropka-Molik
Keywords
Related Articles
- EP ID EP75148
- DOI -
- Views 145
- Downloads 0
Changes in physico-chemical characteristics, somatic cell count and fatty acid profile of Brown Short-haired goat milk during lactation
The main aim of this study was to evaluate the effect of the lactation stage (SL) on the fatty acids (FA) profile of raw milk of Brown Short-haired goats reared under organic regime. An integral part of the study was als...
The effect of cystatin B gene (CSTB ) on productive traits in pigs
Cystatin B gene is a candidate gene for carcass and meat quality traits of pigs and belongs to the family 1 of cysteine proteinase inhibitors. The enzyme is a cathepsin inhibitor and the proteolytic cystatin/cathepsin sy...
Population of ciliates, rumen fermentation indicators and biochemical parameters of blood serum in heifers fed diets supplemented with yeast (Saccharomyces cerevisiae) preparation
Evaluated was the influence of live cells and metabolites of yeast (Saccharomyces cerevisiae) in the diet on number of ciliates, concentration of volatile fatty acids (VFA) in the rumen and biochemical parameters of bloo...
Effect of dietary selenium and vitamin E on chemical and fatty acid composition of goose meat and liver
The effect of dietary supplementation with organic selenium and vitamin E on chemical characteristics and fatty acid composition of goose meat (breast and leg muscles) and liver is described. Two-hundred one-day-old Whit...
Effects of GnRH agonist on reproductive functions of female rabbits
The physiological efficiency and mechanisms of action were studied of gonadotropin releasing hormone analogue (GnRH-A) on the reproductive functions of rabbits. Twenty-four female rabbits (Oryctolagus cuniculus) were ran...