Husbandry versus Fluoride Ingestion as Factors in Unsatisfactory Dairy Cow Performance

Herd factors associated with dairy cow mortality.

Summary studies of dairy cow removal indicate increasing levels of mortality over the past several decades. This poses a serious problem for the US dairy industry. The objective of this project was to evaluate associations between facilities, herd management practices, disease occurrence and death rates on US dairy operations through an analysis of the National Animal Health Monitoring System's...

Effects of barley grain particle size on dairy cow performance

Grazing Management in Spring and Subsequent Dairy Cow Performance

Two levels of grazing intensity were unposed on pasture durtng a spring-time pre-treatment period in two years at Massey University’s Dary Cattle Research Urut. The two grazing intensws were lax (L), 2000-2500 kg DMlha residual herbage mass (RHM) and intense (I) 1000-1500 kg DM/ha RHM. imposed for 2 grazmg rotations. Durmg this period, net herbage accumulation (NHA) on the L wards was approxima...

A novel farm technology to quantify dairy cow cervix morphology: oestrus versus non-oestrus models

The objective was to quantify and compare cow cervical morphology on oestrus vs. non-oestrus daysusing a new farm technology. The cervical tissues were videotaped using a cervixscope involving newcamera equipment in four Holstein cows on multiple oestrus and non-oestrus days to score tissue morphology as altered by oestrus. The non-oestrous days were in diestrus phases. The videotaped records w...

Reproductive Performance Definition in Dairy Cattle: Affective Factors

The reproductive performance of a dairy herd has a significant effect on the profitability of that herd. Common measures of reproductive performance are days to first service, days to conception, calving interval, services per conception, conception rate, estrus detection rate, and pregnancy rate. Most cow operations would benefit economically by reducing the number of operational days, decreas...