Two experiments were conducted with the aim of studying how dietary fat source, reproductive stage (Exp. 1), and diurnal variation (Exp. 2) affect plasma ketone bodies in sows. In Exp. 1, 40 second-parity sows were fed 1 of 5 lactation diets from 7 d prepartum until 28 d postpartum, with low or high levels (3% or 8%) of dietary fats with different proportions of medium- and long-chain fatty aci...

Haemophilia A is a bleeding disorder that has a spectrum of manifestations ranging from persistent bleeding after minor trauma to spontaneous haemorrhage. As an X-linked disease, it has a rare occurrence in females. We report a case of a pregnant patient with severe haemophilia A, who received epidural analgesia during labour. The prepartum, intrapartum and postpartum care of a patient with suc...

The transition period for dairy cows is generally defined as the time period from three weeks prior to parturition through three weeks after parturition. It is now recognized that defining and meeting the nutritional requirements of the transition dairy cow can greatly impact animal health, production in the ensuing lactation, overall longevity, and animal well-being (NRC, 2001). Nutrition and ...

Slices of mammary gland from lactating rats, incubated with acetate-1 J4C or mevalonate-2J4C, synthesized cholesterolJ4C. Within 2 min of an intravenous injection of 1 ml of a suspension of chylomicrons containing cho1esterol-4J4C, mammary glands of lactating rats removed as much as 29oj, of the labeled cholesterol; those of 2day-postlactating rats removed none. Rats were fed a diet containing ...

Recently it has been demonstrated that there are differences between sheep and goats in respect to adaptation to a calcium-restricted diet. It was the aim of the present study to evaluate whether species-specific peculiarities also occur when calcium homoeostasis is challenged by lactation. Therefore, we investigated the time courses of plasma parameters related to calcium homoeostasis (calcium...

Feed sorting is a natural behavior of dairy cows that can result in inconsistencies in the nutritive value of a total mixed ration (TMR). The objective of this study was to determine the effects of replacing high-moisture corn with glycerol on feed sorting and the feed intake pattern of transition dairy cows. Multiparous Holstein cows (n=26) were paired by expected calving date, housed in indiv...

This experiment was conducted to determine the effects of interval feeding of whole sunflower seeds on the performance of beef cows and their progeny. During mid to late gestation, 144 multiparous, spring-calving beef cows (588 kg of initial BW; 5.6 initial BCS; 4 to 13 yr old) were individually fed 1 of 3 supplements 4 d/wk for a 76-d period. Supplements (DM basis) included: 1) 0.68 kg of soyb...

A study was conducted to evaluate the effect of a deficiency in dietary crude protein intake on postpartum reproductive performance of first-calf beef cows. Forty primigravid Hereford heifers were randomly assigned to two groups that were fed isocaloric (100% NRC requirements) diets containing .96 (adequate) or .32 (deficient) kg crude protein per head daily. Animals were individually fed from ...

Objectives were to evaluate effects of feeding a calcium salt rich in linoleic and trans-octadecenoic acids (LTFA) on synthesis of prostaglandin F(2alpha) based on its metabolite (PGFM), uterine involution and pregnancy rates in lactating dairy cows. Five hundred and eleven Holstein cows were blocked according to parity, body condition score and milk yield in the previous lactation. Primiparous...