Small ruminants are characterised by large anoestrus periods in temperate latitudes due to photoperiodism. This is a major obstacle sheep and goat farming several countries where milk from these animals constitute important products for national economies. In an effort reduce the usage of exogenous hormones administration oestrus induction there reproduction production throughout year, genetic improvement scoping non seasonal dependent breeding could be promising alternative. Keeping this...

Sheep's reproductive physiology in temperate latitudes (such as Greece), is characterized by seasonality and also regulated photoperiodic exposure. Melatonin the key hormone involved this regulation. However, melatonin secretion therefore ewes activity underlies variation, proposed to be linked with receptor subtype 1A (MNTR1A) gene structure. This study was designed investigate polymorphism of MNTR1A a local Greek sheep breed determine its potential association seasonality.Two groups farmed...

The aim of the present study was to determine any potential association BF, RBP4, and ESR2 genes with reproduction traits in an autochthonous Greek pig population. PCR-RFLP methodology implemented for genotyping purposes examined genes. No deviation from Hardy-Weinberg equilibrium observed loci, while B allele noted be more frequent all analyzed In addition, sows AA genotype BF gene found produce significantly lower numbers total born piglets (TNB) number alive (TNA), respective BB exceeded...

PCR-RFLP was applied to a commercial crossbred pig population in order investigate the association between polymorphism (SNP) of Retinol-binding protein 4 (RBP4) gene and reproductive performance. 400 sows were genotyped 2000 records traits used retrieve information about allele frequencies RBP4 with main characteristics population. A deviation from Hardy-Weinberg equilibrium observed as result AB genotype excess. In addition, AA saw statistically significant higher values (i) total number...

Sheep farming plays a crucial role for Mediterranean countries, wherefrom plethora of dairy products is produced. Yet, numerous indigenous sheep breeds in temperate latitudes such as the present serious drawback that milk production impaired by seasonality reproduction. Towards efforts reduction this phenomenon, purpose study was to evaluate and compare different oestrus synchronization treatments, well associate two genes alleles', namely MTNR1A GDF9, with response those treatments. Three...

<abstract> <p>The aim of this study was to evaluate the effects two different methods controlling ovine reproduction (ram effect and a combination eco-friendly substances) in three Greek indigenous sheep breeds, namely Florina, Karagouniko, Chios. 180 ewes, aged 2–3 years old, were used, equally divided between breeds. Each breed equal experimental groups: In group ECO (combination substances), dose Gonadotropin-releasing hormone (GnRH) administered at day 0, followed by an...

Organising the breeding plan of a seasonally species, such as sheep, presents challenge to farmers and industry whole, since both economical biological considerations need be carefully balanced. Understanding activity individual animals becomes prerequisite for successful program. This study set out investigate sources variation genetic profile spontaneous, out-of-season ovulatory ewes Chios dairy sheep breed in Greece. The definition trait was based on blood progesterone levels, measured...