A study on a hundred samples of lamb meat and offal were done for a year. The bacterial microflora of lamb meat and offal from lamb 1-2 year old were isolated. The prevalence of microorganisms identified in this study was Staphylococci, Corynebacterium, Streptococci, Micrococcus, Salmonella, Escherichia coli and Yeast. The positive isolates were high in spring and early summer while the positive isolates were low in autumn and early winter. Staphylococci and Salmonella were predominant over all positive microorganisms. Lymph nodes and kidneys yielded more numbers of Salmonella and Staphylococci than meat, liver and spleen. Fifteen Salmonella typhimurium (28%) out of 53 as a total number of Salmonella serotypes were identified. Out of eight was the total number of Staphylococci six (40%) of them were coagulase positive. This study covers the distribution of indigenous microflora of meat, and offal.

Objective—To determine whether selection for the homozygous A136R171 genotype that confers resistance to classic scrapie infection negatively affects production traits in sheep. Animals—996 commercial lambs obtained from 2 flocks at separate locations across 3 consecutive years. Procedures—Genotyping at codon 136 and 171 was performed by use of commercially available testing or a single-nucleotide polymorphism assay. Carcass data were collected without knowledge of genotype approximately 24 hours after slaughter by an experienced grader. The model to analyze associations between prion protein (PRNP) genotype and production traits was based on genotype, breed, or both as fixed effects and days on feed as a covariate. Results—Average daily gain was significantly associated with only combined codons 136 and 171. In flock 1, weaning average daily gain was significantly greater in AA136 sheep than heterozygotes; the difference between QR171 and RR171 sheep, compared with QQ171 sheep, were not significant although QR171 and RR171 sheep had higher values. However, in flock 2, average daily gain was significantly greater in AV136 sheep than AA136 sheep and in QR171 sheep than QQ171 sheep. Conclusions and Clinical Relevance—Findings suggest there is an advantage for average daily gain in lambs with an arginine allele at codon 171, but there were no other genotype effects on production traits. Thus, selection for the resistant arginine allele at codon 171 to comply with USDA scrapie eradication guidelines should not be detrimental to lamb production in commercial flocks. Effects of codon 136 on average daily gain were ambiguous.