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Showing 1 to 20 of 45 for “"dairy calves"”.
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Feeding and Housing of Dairy Calves
… species and Klebsiella species. Holstein calves were fed either fermented antibiotic containing mastitic milk or whole milk for 6 wk then fed only dry feed for an additional 2 wk. Calf growth and dry feed intake was not different between treatments for the 8 wk trial. Female calf weights …
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Excretion of Antibiotic Resistance Genes by Dairy Calves
Twenty-eight Holstein and crossbred calves of both genders were used to evaluate the effect of milk replacer antibiotics on abundance of selected antibiotic resistance genes (ARG) in the feces. Calves were blocked by breed, gender, and birth order, and assigned to one of three treatments at birth. …
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Evaluation of Essential Oils (Stay Strong) for Dairy Calves
… challenges and stresses experienced by newborn calves. Current feeding inclusion rates are unknown to achieve optimal performance in the first 8 weeks of life. The study objectives were to determine the optimal feeding inclusion rate of SS when added to milk replacer (MR) to achieve optimal …
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Effects of psyllium in milk replacers for neonatal dairy calves
… inclusion in milk replacers for neonatal dairy calves have been minimally researched. The purpose of my research was to determine the impact of psyllium inclusion in milk replacer on feed intake, water intake, growth, illness, digesta viscosity, rate of passage, nutrient digestibilities, …
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Substitutes for whole milk as a ration for dairy calves
no abstract provided by author
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Sources of Variation in the Microbiome of Pre-Weaned Dairy Calves
… samples were collected from dams (n = 6) and calves (n = 6) using sterile flocked swabs. The vaginal, oral, and fecal bacterial communities were examined from the dam and the fecal community of calves was examined from birth to 60 d of age. Microbial communities varied by anatomical location …
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Environmental, Biochemical, and Dietary Factors that Influence Rumen Development in Dairy Calves
The dairy industry today is beginning to dedicate more focus on the growth of the calf from birth to first breeding to better improve the milk production as well as the overall performance of the individual cows. While the development of the rumen is one of the most vital contributors to the …
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Feeding Value of High Starch and High Fat Rations for Dairy Calves
<p>Sixty-four Holstein calves were used in a 3 x 2 factorial experiment of 12 wk to evaluate growth performance when fed control, high starch, and high fat pelleted diets separately or with a supplemental concentrate mix offered the first 6 wk. High starch and high fat diets were formulated to …
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Nutritional Evaluation of Soybean Protein in Milk Replacers for Young Dairy Calves
Made available in DSpace on 2014-12-14T15:29:39Z (GMT). No. of bitstreams: 1 7624033.pdf: 5126153 bytes, checksum: 4a6208e75c63c33312292b8a7c3bc8a6 (MD5) Previous issue date: 1976
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Defining the range for plasma protein incorporation in milk replacer for dairy calves
… and health. Four groups of 31 male Holstein calves were blocked by initial BW and plasma protein concentration and assigned to one of seven treatments. Treatments were as follows: A: control, all-milk protein milk replacer, B: 33% plasma protein addition, C: 33% plasma protein addition plus …
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Adoptively transferred maternal colostral cells impact immune status and development in dairy calves
… gain resulting from infection and disease in dairy calves is a problem within the dairy industry. Colostrum is the sole source of maternal immunity for the calf, having a substantial impact on health and survival. To date, colostrum quality is determined by concentration of antibodies. …
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Age and Dose Dependent Susceptibility to Mycobacterium avium subspecies paratuberculosis Infection in Dairy Calves
… of infection of susceptible individuals: calves < 6 months of age. However, this age-cut-off for susceptibility is not well supported scientifically. Additionally, control programs struggle with low sensitivity of diagnostic tests in the early stages of JD. The main objective of this …
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A MULTIMODAL CLINICAL AND DIAGNOSTIC APPROACH TO BOVINE RESPIRATORY DISEASE COMPLEX (BRDC) IN DAIRY CALVES
… For this purpose, pre-weaning Italian Friesian calves from herds in northern Italy were included, and observations were performed under field conditions. In our first study, an epidemiological investigation of pathogens in the lower airways of calves that showed respiratory symptoms for less …
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The value of limited grain-high roughage rations and cud inoculation for raising dairy calves
… of growth or efficiency of feed utilization in calves through four months of age. Consumption of hay was not materially increased by cud inoculations. 2. Thus. it is concluded that cud inoculation is of no economic value under practical calf raising conditions. 3. Calves restricted in grain …
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Effects of ingestion of milk and methionine on blood levels of tryptophane and methionine in dairy calves
Series of blood samples were taken from Holstein calves before, and at 2, 4, and 6 hours after feeding. The blood plasma levels of tryptophane and methionine were determined by microbiological assay. It was found that the blood plasma levels of tryptophane and methionine varied considerably at …
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Effects of hydroxy versus sulfate forms of trace minerals in milk replacer or starter on dairy calves through weaning
Young dairy calves experience many stressors as they acclimate to their environment. These stressors can impede intake and subsequent growth, create a depressed immune system allowing for a greater risk of infection and disease, and ultimately raise the cost to rear these animals. Trace minerals …
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Duodenal and ileal digestibility of dietary nutrients and endogenous protein losses in pre- and post-weaning young dairy calves
… health and growth in pre- and post-weaned calves. The objectives of the series of experiments included in this dissertation were to (1) evaluate our capacity to successfully place a duodenal and ileal cannula in young calves, (2) analyze the effect of the inclusion of an enzyme-treated …
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