The families of TGF-β proteins are the most important growth factors in the ovary for growth and differentiation of early ovarian follicles. Three related oocyte-derived members of the transforming growth factor-β superfamily namely growth differentiation factor 9 (GDF9), BMP15 and BMPR-IB have been shown to be essential for follicular growth and ovulation. Different mutations in the GDF9 gene ...

In Iraq, Awassi is the most widespread sheep breed on non-European origin. The adapt to a wide range of environmental conditions. Sheep farming, mainly breed, represents an essential economic activity Iraq; however, so far, only very few genetic data exist this breed. present study was performed in Biology Department, University Zakho. Thirty two Blood samples were obtained from Awassi-Iq (Ovis...

Abstract. As an excellent local sheep breed in China, Hu have the characteristics of producing more lambs and good motherhood. The purpose this study was to identify polymorphism mitogen-activated protein kinase 5 (MAP3K5) gene determine whether it associated with body size traits (body height, length, chest circumference, cannon circumference) sheep. MAP3K5 identified by using PCR amplificatio...

the genotypes of the melatonin receptor 1a (mtnr1a) were determined by pcr-rflp in the native iranian shall  and karakul breeds of sheep . blood samples were collected from 60 karakul and 50 shall breeds. genomic dna was extracted based on the guanidin thiocyanate-slica gel method. after pcr reaction, pcr products were digested by the mnl1 restriction enzyme. the mtnr1a locus had two genotypes ...

Sixty eight adult ewes of Zel sheep breed were screened with forced PCR RFLP method for the detection of the FecB gene and its effects on litter size. Genomic DNA was extracted from the blood of 68 Zel matured ewes with litter size varied from 1 to 2 lambs per ewe lambing. Digestion of the FecB gene (190 base pairs) with AvaII restriction enzyme resulted in none carrier 190 bp band wild type in...

In this study, all the hairs and their follicles characteristics of Iranian Bakhtiari sheep were investigated. A total of 48 healthy Bakhtiari sheep (aged 5-8 months) were selected and categorized on the basis of sex (24 females and 24 males). Samples were taken as small pieces from different regions of the skin, fixed and stained with haematoxylin and eosin. The following indices in each piece...

The major histocompatibility complex (MHC) plays a central role in the control of disease resistance and immune response. Extensive genetic diversity in MHC genes provides a valuable source for genetic improvement, via selection, in many domestic animals. Exon 2 of the class II MHC, termed Ovar-DRB1 in domestic sheep (Ovis aries), has been suggested as important disease resistance and immune re...

Twenty-seven sheep of the four most common Swiss breeds and the English breed Poll Dorset were experimentally infected with a northern European field strain of bluetongue virus serotype 8 (BTV-8). Animals of all breeds developed clinical signs, viremia and pathological lesions, demonstrating that BTV-8 is fully capable of replicating and inducing bluetongue disease (BT) in the investigated shee...

The apolipoprotein A-V (APOA5) gene is a candidate that plays an important role in carcass characteristics and lamb quality. This study aimed to association polymorphism of the APOA5 with quality sheep. breed sheep were used 100 consisting Thin Tailed Sheep (TTS) (n=55), Compass Agrinac (CAS) (n=10), Garut (GS) (n=18), Composite (GCS) (n=8), Barbados cross (BCS) (n=9). Identification was perfor...