Raising dairy heifers from birth to calving has been found to comprise the second largest expense on the dairy farm towards the production of milk, while deriving no revenue until the onset of lactation (Heinrichs, 1993). Therefore, many experiments involving dairy heifers have focused on ways to minimize the costs associated with the growth period or decreasing the unproductive period of the a...

Data of 698 Murrah cows sired by 43 bulls maintained at the Central Cattle Breeding Farm, Alamadhi were analysed to study the performance of Murrah buffaloes at the coastal region of Tamil Nadu, India. Least-squares means and genetic parameters were estimated for different first lactation traits. The averages for 305-day and total lactation milk yields were 1616.3 ± 39.6 and 1686.2 ± 44.4 kg, r...

In this study, the incomplete gamma function, an exponential function, a mixed-log function and a polynomial function were evaluated to describe the lactation curve in Moroccan Holstein-Friesian dairy cows. Data from 1990 to 1999, comprising 77130 monthly milk yields of 6029 dairy cows in 280 dairy herds, were used. Edits were carried out by considering the lactation length (5 d and

The aim of study was evaluation of the quality of feeds for dairy cattle on the content of copper and zinc from two agro-ecological zones (western Slovakia and eastern Slovakia). Feed samples-corn silage (n=70), lucerne silage (n=32), grass silage (n=25), and total mixed ration for dairy cows-TMR (n=66) came from livestock farms. The Cu and Zn contents were assessed in samples using atomic abso...

The objective of the present study was to refine a previously developed method to isolate primary bovine mammary epithelial cells (pBMEC) from fresh milk. Using this method, it was tested whether the number of pBMEC and the relation of recovered pBMEC to total somatic cell count vary within the individual lactation stages. Furthermore, the expression levels of the milk protein genes during the ...

I . Analyses have been made of milk collected from thirty wild African elephants immediately after they were shot. 2. The milk contained an average of 5.1 % protein, 9.3 yo fat and 3.6 yo lactose. The concentration of lactose decreased and the concentration of protein and fat increased with advancing lactation. Inorganic constituents were present in approximately the same proportions as in bovi...

Worldwide, around 385 thousand babies are born each day. Many of them cannot be breastfed because several physiological problems the mothers. Galactogogues remain most natural and prolific way to improve both milk quantity quality. Various herbs traditionally used increase lactation, but best known fennel (Foeniculum vulgare L.) anise (Pimpinella anisum L.). The main objective present study was...

1. Food consumption, live weight, anatomical measurements on the gut organs and the absorptive capacity of the small intestine for L-leucine and D(plus)-glucose were made on virgin (control), pregnant and lactating albino rats. 2. Food intake increased by approximately 60% during pregnancy and a further 250% during lactation. 3. Pregnancy did not markedly influence the gross anatomy of the gast...