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Showing 1 to 20 of 20 for “"Calf growth"”.
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Management factors affecting calf growth and health
Two calf feeding trends are emerging in the dairy industry in the United States. Large herds often find it economical to feed pasteurized waste milk; while smaller herds are embracing technological advancements by utilizing automated calf milk feeders. Housing of calves varies depending on feeding …
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Investigation of Gestational Environmental Impacts on Individual Calf Growth and Development in Beefmaster Cattle
… April 15 and October 15 each year. Relative to calf birthdate, month of birth and month of gestation were evaluated for historical average vs. 0.67 standard deviation for temperature and precipitation. Mean weaning age was 231 days, and 53 sires were represented. Weaning age (P < 0.001), age of …
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The Role of Nutrition and Administration of Estrogen in Holstein Calf Growth, Development, and Adenogenesis
… heifers. Manipulating early postnatal growth and development through diet enables this practice to be successful. Puberty is greatly influenced by body weight (BW). Once heifers reach puberty, they become fertile and can achieve their reproductive potential. Growth can easily be …
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Defining the range for plasma protein incorporation in milk replacer for dairy calves
… of this study was to determine the effects of calf milk replacer containing from 0% to 100% of the total protein from porcine plasma protein, with or without isoleucine balanced, on calf growth and health. Four groups of 31 male Holstein calves were blocked by initial BW and plasma protein …
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Management, Sanitation, and Accuracy of Automated Calf Feeders
… or milk replacer in automated feeders. Six dairy calf operations in Virginia and 4 in Minnesota employing 1 to 2 sophisticated automated calf feeders were visited biweekly for 26 to 28 wk. An initial management survey was conducted for each farm. Observations on facilities, calf weights and …
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Feeding and Housing of Dairy Calves
… 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 at 3, 6, and 12 mo of age were similar for both treatments. During the first 4 wk of the trial feed intake, minimum, and mean temperature …
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Determination of Energy Efficiency of Beef Cows under Grazing Conditions Using a Mechanistic Model and the Evaluation of a Slow-Release Urea Product for Finishing Beef Cattle
The cow/calf phase of production represents a large expense in the production of beef, and efficient beef cows use fewer resources to obtain the same outcome in a sustainable environment. The objective of study 1 was to utilize a mechanistic nutrition model to estimate metabolizable energy …
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Nutrient Impacts on Rumen Growth and Development
Our collective knowledge of calf nutrition has evolved over the past 100+ years, but there are still areas of improvement that merit further scientific inquiry. The work described herein explored different aspects of calf nutrition with a central focus on rumen growth and development. The first …
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ON-FARM APPLICATION OF PLF TECHNOLOGIES TO DETECT EARLY BEHAVIOURAL AND PHYSIOLOGICAL INDICATORS OF DISEASE AND WELFARE IN PAIR - HOUSED DAIRY CALVES BEFORE WEANING.
… Results demonstrated that pair housing improved growth without compromising health and promoted behavioural synchronisation, supporting its value as a positive welfare indicator. While the first study relied on continuous data provided by accelerometers, Study 2 explored the use of infrared …
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Consumption of Endophyte Infected Fescue During Gestation in Beef Cows
… endophytes can exhibit decreased feed intake, growth performance, organ vasoconstriction, and increased rectal temperature. This work is interested in examining how endophyte toxin exposure impacts pregnancy in cattle. Reduced blood flow to the fetus and inadequate maternal nutrition …
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Fetal programming effects of early weaning on subsequent calf performance
… the effects of early weaning on subsequent calf growth performance and carcass characteristics. Cows were assigned to 1 of 2 treatments based on their previous calf’s weaning age: 1) early wean (EW) or 2) conventional wean (CW). The EW treatment had a steer calf weaned at 88 ± 6 days of age …
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Effect of source of trace minerals and plane of nutrition on growth and health performance and hoof development of transported dairy calves
… and trace minerals source early in life on growth and health of transported calves, and 2) to quantify the effect of early nutrition programs and trace minerals source on hoof tissue development in young transported calves. Ninety Holstein bull calves <1 wk old were assigned to treatments in …
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Maternal rumen-protected methionine supplementation alters dairy calf development, postnatal growth, plasma biomarkers, and liver one-carbon metabolism
Many factors influence fetal growth and development throughout pregnancy. During this critical time maternal nutrition is one of the most important factors that can affect offspring health and performance. Methionine, besides being the first limiting amino, is an important precursor of antioxidants …
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Effects of prepartum supplement level and age of weaning on dam performance and developmental programming of male progeny
… on cow BW, BCS, milk production, reproduction, calf performance up to weaning, growth performance, feed efficiency, glucose and insulin concentration, and carcass characteristics of male offspring. Mature, multiparous Angus × Simmental cows (yr 1, n = 326; yr 2, n = 383) were used in a …
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The wintering and calving of Angus beef cows on a sawdust pad : a thesis presented in partial fulfilment of the requirements for the degree of Master of Agricultural Science in Animal Science at Massey University
… days after birth respectively. This enabled the calf to obtain colostrum without interference, allowed the cow to build up reserves of vitamin A, helped form a bond between the calf and its mother, and enabled the calf to have the benefit of a healthier environment for the first days of its life. …
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Environmental, Biochemical, and Dietary Factors that Influence Rumen Development in Dairy Calves
… 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 performance of the calf, …
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The effect of feeding frequency and alternative proteins in milk replacer on growing Holstein calves
… factors and high digestibility that allows for growth rate similar to that of a calf consuming its mother’s milk. Milk replacers containing whey protein, although more cost-effective than whole milk, still represent a substantial cost for producers raising calves. Alternative protein sources …
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Duodenal and ileal digestibility of dietary nutrients and endogenous protein losses in pre- and post-weaning young dairy calves
… characteristics of milk replacers (MR) and calf starters (CS) in a calf-rearing program. Since AA are only absorbed in the small intestine and because the fermentation in the large intestine would alter AA profile in digesta, ileal digestibility is considered the most accurate estimation of …
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Nutrition and management considerations for bulls and breeding females
… portion of the reproductive failures in cow-calf enterprises is due to the fertility of the herd bull. Thus, the objective of this dissertation was to evaluate nutritional and management strategies to optimize the development of bulls and breeding females. Research has been inconsistent on …
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Effects of maternal supplementation of trace minerals and fatty acids on beef progeny
… programming effects on offspring postnatal growth performance. Trace minerals play very important roles in nutrition and regulate many of the critical biological processes. Additionally, with a critical role in protein and lipid metabolism, essential fatty acids can influence the development …