Genotypes for melatonin receptor type 1A (MTNR1A) and Calpastatin (CAST) were determined by enzymatic digestion of PCR products and Calpain(CAPN) genotype detected by PCR-SSCP method in Iranian Karakul sheep. Blood samples were collected from 100 purebred Karakul sheep. The extraction of genomic DNA was based on guanidinium thiocyanate- silica gel method. PCR amplicons were digested with restri...

Homozygous grey Karakul lambs are born with a lethal genetic factor responsible for death and weaning age. When put on a high roughage diet under field conditions they develop distended, thin-walled rumens and sand impacted abomasa. Homozygous white Karakul lambs have a similar factor but survive for a longer period. Black Karakul lambs are not affected. The present study was undertaken to comp...

While the international trade in small ruminants and small ruminant products is small relative to the trade in bovine, swine and poultry products, it is still economically important. In addition to wool, it includes some unique products (such as goat and sheep milk cheeses, cashmere fibre and karakul pelts) and the sheep/goat meat trade plays a large part in sustaining livelihoods in several re...

The article provides recommendations on the use of immunological methods and criteria for assessing level natural resistance, in order to select animals with high resistance. Karakul sheep sur (brown) color having a concentration common immune proteins serum blood (CIPSB) quantitative method 32–50 mg/ml semi–quantitative 1.1–2.0 conventional units, cellular immunity according skin reaction (del...

The article presents the possibility of using waste oil obtained by repeatedly frying fish, and it in process fattening karakul. main properties purified were determined an IR spectroscopic analysis was carried out. Bleached is used emulsion greasing karakul with soft, smooth elastic leather tissue. KEY WORDS: karakul, fatliquoring, oil, emulsifier, material, acid number, vegetable oils.

This study was conducted on 528 neonates of Pak-Karakul sheep born during February to April, 1998 at the Sheep and Goat Development Center, Rakh Khairewala, District Layyah, Overall mortality observed in neonates was 9.28%.The mortality rate in male and female neonatal lambs was 9.72 and 8.90%,respectively. The survived lambs were significantly heavier (3.77 ± 0.63 kg) (P< 0.001) than those die...

b-lactoglobulin (Coded by the b-lg gene) is the major milk whey protein in ruminants. Studies have shown that this protein is polymorphic in many breeds of sheep as a result of a single base pair substitution in the b-lg gene that also gives rise to RsaI restriction fragment length polymorphism (RFLP). Blood samples were collected from 391 animals belonging to 5 Iranian and 6 Russian sheep bree...

Understanding existing levels of genetic diversity of sheep breeds facilitates in situ and ex situ conservation activities. A comprehensive evaluation of US sheep breeds has not been previously performed; therefore, we evaluated the genetic diversity among and within 28 US sheep breeds. Both major and minor breeds were included in the analysis and consisted of 666 animals from 222 producers loc...

This study was conducted to investigate the association of Gonadotropin-Releasing Hormone Receptor (GnRHR) gene with growth traits in Awassi (n= 123) and Karakul 78) sheep. Starting from birth-day 12 months age, several were investigated, namely body weight length, wither rump height, chest, abdominal circumferences. Four fragments designed amplify three exons GnRHR gene, P1 P2 for exon 1, P3 2...