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Showing 1 to 20 of 49 for “"Udder"”.
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Genetic Parameters for Udder and Teat. Type Traits in Icelandic Cattle Breed
Udder balance, fore udder attachment, udder support, udder depth, teat structure, teat length, teat thickness, teat position and teat tip of Icelandic Cattle have been described on a linear scale since 1995. Udder and teats now weigh 20% in Icelandic Cattle’s total merit index, but udder balance, …
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The Effects of Foot and Udder Scoring on Cow and Calf Performance
<p>Foot soundness and udder conformation are essential for longevity in beef cattle. The objective of this study was to investigate the effects of foot angle (FA), claw set (CS), teat size (TS) and udder suspension (US) scores on cowherd performance. Data were analyzed for 1,685 observations on …
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An Attempt to Develop Resistance in the Udder Against Streptococcus Dysgalactiae and Escherichia Coli
… when a foreign protein is introduced into the udder. Since antibody production of the udder has been demonstrated, there is reason to suspect that the udder of the cow might be injected with an antigen and produce an immunity to bacterial invasion. Thus this investigation deals with an attempt …
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An analysis of sire-son and dam-daughter relationships for type traits in the Holstein descriptive type classification system
… rump, 0.21; hind legs, 0.07; feet, 0.08; fore udder, 0.16; rear udder, 0.17; udder support, 0.13; udder quality, 0.04; and teats, 0.17. When traits were expressed as 1 for desirable and 0 for undesirable, h² estimates were lower. Genetic correlations were generally positive, ranging from 1.01 ± …
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Relationships between first lactation milk yield, first calving interval, herd life, lifetime milk production, and descriptive type subtraits in Holstein cattle
… yields included narrow front end, broken fore udder, udder floor too low, and tilted udder floor. However, broken fore udder was associated with shortened herd life and reduced lifetime yields. The other three type subtraits plus medium strength front end, sloping rump, bulgy fore udder, high …
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Local regulation of increased milk yield due to early lactation increased milking frequency
… to unilateral frequent milking [UFM ; 2X left udder half and 4-times-daily milking (4X) right udder half] for the first 21 days of lactation. Both udder halves were milked 2X for the remainder of lactation. Early lactation IMF significantly increased milk, fat, and protein yields in the right …
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Evaluation of corrective mating in Jersey cattle
… stature, strength, rump angle, rump width and udder depth. Dominance components ranged from 2 to 4 times as great as additive components for dairy character, rump width, and the udder traits; fore udder, rear udder height, rear udder width, and suspensory ligament, but were small for the other …
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Genetic evaluation of a linear trait description
… 79,997 evaluations for 12 individual body and udder traits of Holstein cows. Type scores were subjectively assigned by trained personnel of Select Sires, Inc., Plain City, OH, through their corrective mating and young sire evaluation programs. After editing data to remove incomplete, erroneous …
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Evaluating the duration of increased milking frequency during early lactation for increased yield through lactation
… first twenty-one days of lactation, the right udder half produces 3 kg/d more milk than the left half, which is milked only two times a day (2X) over the course of lactation (Hale et al., 2003). Alterations to this increased milking frequency (IMF) approach have been investigated in order to …
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Importance of body conformation in predicting longevity and wearability of dairy cows
… appeared to be dairy character, mammary system, udder quality, udder support and floor, teat site and placement, stature, fore udder, and rump.
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Big data and machine learning tools to understand mastitis epidemiology and other topics
… dairy herd improvement (DHI) data to describe udder health in primiparous dairy cattle across Canada; 2) a systematic review and meta-analysis was conducted to synthesize all available research on the effectiveness of pre-calving therapies to improve udder health in primiparous dairy cattle; 3) …
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Heterogeneity of within-herd variances for conformation and its relationship to various herd parameters in the U.S. Holstein population
… in genetic variance were noted for foot angle, udder depth and rump angle, Heritability had positive trends for body depth, angularity, rear udder height, udder support, and teat placement. Data set II included first-parity final scores on cows classified from 1967 to 1986. Relationships …
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Bovine acute mastitis: Effect of sodium salicylate on inflammation
… milk yield, and clinical responses, gross udder inflammation, body temperature and appetite change.
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The Physiology of Enhanced Milk Yield Through Increased Milking Frequency in Early Lactation
… unilateral frequent milking (UFM) with 2X and 4X udder halves for 21 d in early lactation. The first study manipulated milking interval (MI), or the time between milkings, during early lactation IMF. Cows were either milked on an even MI every 6 h or unevenly on a 9:3:9:3 h MI. Unevenly milked …
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A Genome Scan for Quantitative Trait Loci in Dairy Cattle
… BTA1, milk protein percentage on BTA2 and BTA3, udder composite and front teat placement on BTA5, teat length on BTA6, dairy composite on BTA7, fore udder attachment on BTA10, feet and leg score on BTA11, milk protein yield on BTA21, and dairy form on BTA27. A multimarker regression analysis …
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Local Regulation of Milk Synthesis Capacity in the Mammary Gland of Lactating Dairy Cows
… the implementation of IMF with 2x and 4x udder halves at early and mid-lactation for 21 and 20 d on milk yield (MY) and its association with changes in cistern and alveolar capacity. Results showed that udder halves milked 4x produced 2.27 kg more MY. Additionally, cows milked during early …
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Effects of goat phenotype score on milk characteristics and blood parameters of indigenous and improved dairy goats in South Africa
… scoring (an approach which includes breed, udder size and BCS of the animal) is presented in this study as a better tool to evaluate milk yield in different goat genotypes raised under free range conditions. This has also been a good opportunity firstly to indicate which, among the three …
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WATER BUFFALO MILK CHAIN IN BANGLADESH
The present study aimed to assess udder health by estimating the prevalence of subclinical mastitis (SCM) and identifying intramammary infection (IMI) causing pathogens. Furthermore, milk quality was evaluated by measuring bulk milk somatic cell count (BMSCC) on buffalo farms and total bacterial …
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CARATTERIZZAZIONE IN VITRO DELLA RISPOSTA A STIMOLI INFETTIVI DELLE CELLULE EPITELIALI MAMMARIE BOVINE (BME-UV)
… response plays a major role in defending the udder from bacterial invasion. Moreover, recent investigations suggest that mammary gland epithelial cells could have a large and important role as a source of soluble components of immune defenses. An experimental model was developed based on …
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Impact of relocation on dairy cows
… 4 = heavy plaques of manure on 3 body regions: udder, lower leg, and flank/upper leg. In experiment two, milking parlor behaviors observed were cow reactivity (REACT), latency to enter the parlor (LAT), and plasma cortisol (CORT). REACT was evaluated on a numeric scale (0 = ideal milker to 3 = …
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