Farm conditions and production methods in Chios sheep flocks

Genetic and phenotypic relationships between milk production and body weight in Chios sheep and Damascus goats

Data on 2087 lactations from 737 Chios ewes collected between 1978 and 1989, and 1611 lactations from 486 Damascus goats collected from 1982 to 1998 at the experimental station of the Agricultural Research Institute were utilized. The ewes were the progeny of 101 sires (mean sire family size 7.3) and the goats of 101 sires (mean sire family size 4.8). A mixed linear model that accounted for the...

Protein requirements of Chios sheep during maintenance.

The requirements of non-lactating non-pregnant ewes for digestible nitrogen for maintaining nitrogen or weight equilibrium were studied using soybean meal or urea as the sources of supplemental nitrogen. From the nitrogen balance data, assuming nitrogen losses of .05 g N/kg -73, the digestible nitrogen requirement for maintaining nitrogen equilibrium was. 195 -+ .0237 and .188 + .0099 g N/kg.73...

Lamb production of fall vs spring mating of four fat-tailed iranian breeds of sheep under farm conditions

Characterization of the PRNP gene locus in Chios dairy sheep and its association with milk production and reproduction traits.

The objective of this study was to examine the prion protein gene locus (PRNP) in Chios sheep. PRNP is linked with scrapie resistance in small ruminants. Here, its impact on milk production (test-day and total lactation yield) and reproduction (age at first lambing, conception rate at first service, and prolificacy) was assessed. Genotyping at codons 136, 154 and 171 (classical scrapie) and 141...

Estimation of the Carbon Footprint in Dairy Sheep Farm

By 2050, the earth’s population is expected to be more than 9 billion. The need for secure food and water supply will force agriculture to increase production. The major greenhouse gases (GHGs) from the livestock sector are carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) throughout the production process. These gases are the key contributor to an in...