Showing papers in "Journal of Dairy Science in 1978"

TL;DR: Bovine colostrum imparts passive immunity to newborn calves during the first 24 h of life and generally has been fed for the first 3 days after birth.

TL;DR: Superoxide anion was generated in the serum of bovine milk following illumination with fluorescent light by suppression of nitro blue tetrazolium reduction by superoxide dismutase, and generation increased about 15 fold upon reduction of the ribonuclease.

TL;DR: In this paper, high-fat diets for cows in early lactation were compared in two 4×4 Latin squares, where grain concentrate was 42% of the ration dry matter and crude protein was 33% of dry matter fed.

TL;DR: The data support the hypothesis that an increase in the rate of intraruminal production of volatile fatty acids promotes proliferation of epithelial cells of the organ.

TL;DR: Reproduction and genetics of the goat are reviewed with a view of increasing their contribution to mankind and excellent genotypes for producing milk and fiber are available, but adaptation to tropical conditions is needed.

TL;DR: Experiments designed for measuring dietary effects on concentration of milk protein are needed to assess the influence of dietary energy, fiber, protein, and fat on the concentration of protein in milk.

TL;DR: In this article, an improved procedure and a new extraction apparatus for determining soluble nitrogen in feedstuffs are presented, which is used to compare the quantity of nitrogen extracted from seven feed-stuffs by several mineral solvents and autoclaved rumen fluid.

TL;DR: Variations in concentrations of growth hormone, insulin, glucagon, prolactin, adrenal corticoids, and thyroid hormones in blood plasma of ruminants as related to circadian rhythms, environmental factors and nutrition are reviewed.

TL;DR: Chylomicra and very low density lipoproteins labeled with 1-Carbon-14 linoleic acid were isolated from thoracic duct lymph of a calf fed the labeled fatty acid and injected into lactating cows fed a control diet of hay, grain, and corn silage (Experiments 1 and 3) or a high grain restricted roughage diet (Experiment 2).

TL;DR: Growth of fetuses, fetal membranes, and fetal fluids was characterized by least squares analysis for 254 conceptuses ranging from 25 to 278 days of gestation as discussed by the authors, with a peak rate of greater than 200 g/day.

TL;DR: A simple, precise, and accurate colorimetric method for estimation of lactose in fluid milk and whey is described in this paper, based on the combined action of phenol, sodium hydroxide, picric acid and sodium bisulfite with lactose.

TL;DR: In this article, mixed diets containing 0 (control), 15 (medium fat), and 30% (high fat) of a protected tallow supplement (60% formylated soybean meal and 40% tallow) were fed to Holstein cows during the first 15 wk of lactation.

TL;DR: Daughters of high sires produced more milk, had 8% fewer systemic uterine treatments, 3% fewer mammary cuts, more joint or leg injuries, 13% more skin or skeletal disorders, and 19% more cases of udder edema than did daughters of average sires.

TL;DR: Protein was the most variable constituent between cows at the same postpartum time and its rate of disappearance from colostrum was greater in younger animals.

TL;DR: Elucidation of determinants of intake of grazed forage must consider component attributes of the forage-animal-grazing system complex and express such attributes in quantitative expressions to predict the net result of these dynamic processes.

TL;DR: In this paper, 15 Holstein cows at various stages of lactation, fed corn-based diets that contained 9 to 14.5% crude protein were used in total collection digestibility and nitrogen balance trials to investigate the efficiency of nitrogen utilization from urea and soybean meal.

TL;DR: Averages of glucose of blood and nitrogen in urea on seven to ten cows, adjusted for the factors mentioned above, have limited practical value in detecting inadequate energy and protein intake, respectively.

TL;DR: The low basal insulin of plasma and poor responses of insulin secretion following glucose infusions indicate sluggish beta-cell function in ketonemic cows.

TL;DR: In this paper, the authors used a mixture of Yeast Candida curvata and Trichosporon cutaneum for producing oil and single-cell protein with two strains each of the yeasts.

TL;DR: This article showed that casein facilitates the interaction of α -lactalbumin and β-lactoglobulin, and supports the view that κ -casein, β -lactic acid, and α -lp-acid are involved in complex formation when milk is heated.

TL;DR: Diets which produce hypertonic rumen fluid due to high mineral and/or concentrations of volatile fatty acids may reduce fermentation in rumen, and postprandial changes in osmotic pressure were primarily due to changes in concentrations ofatile fatty acids.

TL;DR: Frequency of ejaculation was a major factor in total sperm harvested per bull per year, and the concentration of sperm per ml varied more than the volume per ejaculate and had the largest influence on variation in total semen output.

TL;DR: The markedly different response to protein supplementation in milk production between heifers in first lactation and more mature cows is unexplained, and milk composition was not influenced by protein treatment.

TL;DR: In this paper, a milk beverage was prepared by adding a commercially available concentrated culture of Lactobacillus acidophilus to pasteurized low-fat milk and the culture did not alter the flavor of the milk.

TL;DR: Experimental evidence suggests that the dairy goat does not hold a distinct advantage in efficiency of milk production over the highly developed dairy cow; however, it is likely that under many circumstances in the world, milk can be produced more efficiently from goats than from cattle due to resources available and adaptability of the animals.

TL;DR: In this article, the effect of nitrogen solubility on protein utilization was investigated in 20 Holstein cows, in their 8th to 10th wk of lactation, in a 2 × 2 factorial 9-week experiment.

TL;DR: The genetic trends of cow populations were less than twice the contribution of sires to genetic trends, indicating that estimating genetic trends in cow populations by doubling the trend in transmitting ability of sire is biased upwards.

TL;DR: Yogurt gave greater weight gains than uninoculated control and other fermented milks, and additional vitamins stimulated growth in both yogurt and the control, and the superiority of the yogurt was maintained.