A comparison between two distinct levels of back fat thickness in open cows, females not becoming pregnant during the previous breeding season, was carried out order to evaluate their reproductive performance prior next natural mating a seasonal program. Thirty cows from season were divided evenly by age and (BFT) groups. HBFT (high ≥ 70 mm) LBFT (low ≤ mm), values statistically different group...

One of the potencies Madura cow genetics is its adaptation ability to tropical climate. Yet in most cases, reproduction efficiency cows has not reached optimum point. This research examines use double-dose artificial insemination compared a single-dose on cows. The study was conducted Daramista, Lenteng District, Sumenep Regency, Madura, East Java. utilized an experimental field method with pur...

There is an increased incidence of infectious disease in periparturient dairy cows. During the periparturient period there is a decline in T-lymphocyte cell subsets, which parallels a reduction in functional capacities of blood lymphocytes and neutrophils. Mechanisms responsible for these changes in immune function during the periparturient period are poorly characterized. Ten mastectomized and...

—Monitoring of salmonid populations often involves annual redd counts, but the validity of this method has seldom been evaluated. We conducted redd counts of bull trout Salvelinus confluentus in two streams in northern Idaho to address four issues: (1) relationships between adult escapements and redd counts; (2) interobserver variability in redd counts; (3) sources of interobserver variability;...

bovine venereal campylobacteriosis, caused by campylobacter fetus subsp. venerealis (cfv), is regarded as one of the major threats to the cattle industry around the world. abortion and infertility are two important reproductive problems in cows infected with c. fetus subsp. venerealis. reports on the presence of cfv are scarce in the cattle, in iran. therefore, the present study was designed to...

The lion-bull iconography during the Achaemenian period of ancient Persia has generated different theories of astronomicaland seasonal events besides the suggestions that it could be the symbol of the time cycle of the day, with lion representingthe sun and bull the night. However, the present paper draws the reader’s attention to the hitherto unexplored angle ofzoology to understand physiognom...

Abstract. The aim of this work is to investigate the relationship between indicators cicatricial digestion and linearity cows. Methods. research was carried out in breeding enterprises Sverdlovsk region on livestock Ural-type Cicatricial fluid collected with an oropharyngeal rubber probe, a wooden yaw also used. content assessed at Chelyabinsk Interregional Veterinary Laboratory. pH value deter...

Traditional evaluations of cows with genotypes have been adjusted since April 2010 to be comparable with evaluations of bulls so that their value for estimation of single nucleotide polymorphism effects in genomic evaluation programs would be improved. However, that adjustment made them not comparable with traditional evaluations of nongenotyped cows. To create an adjustment for all cows with a...

Abstract In the Sverdlovsk region, purebred bull producers of Holstein breed German, Danish and Canadian selection breeding stock domestic black-and-white Ural offspring were used for improvement. The was distinguished by high milk yield fat mass fraction protein in milk. 2002, type cattle officially registered region. This has significant differences from original rocks. purpose article is to ...