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Dairy cattle

N P Soumya, D N Das, S Jeyakumar, S Mondal, A Mor, U T Mundhe
Embryonic mortality is found to be the main source of reproductive wastage in domestic ruminants. Many genes are involved in the growth and development of the embryo, and the interferon-stimulated gene 15 (ISG 15) is one of the major gene stimulated by interferon tau, the maternal recognition of pregnancy signal in ruminants. In this study, both genomic and cDNA sequences of ISG 15 from Bos indicus (Deoni breed) were amplified and characterized. The genomic sequence of Deoni ISG 15 exhibited 99% identity with Bos taurus and 97% identity with that of Bos mutus and Bubalus bubalis...
October 21, 2016: Reproduction in Domestic Animals, Zuchthygiene
Aparna Lal, Timothy Dobbins, Nasser Bagheri, Michael G Baker, Nigel P French, Simon Hales
The public health risks associated with dairy farming intensification are an emerging concern. We examine the association between dairy cattle density and cryptosporidiosis risk in children <5 years old in New Zealand from 1997 to 2008, a period of rapid intensification of the dairy industry. Multi-level Poisson regression was used to model reported cryptosporidiosis (N = 3869 cases) incidence in relation to dairy cattle densities across urban and rural areas separately, after controlling for microbiological quality of public drinking water supplies and neighbourhood socio-economic factors using the Census Area Unit of residence...
October 20, 2016: EcoHealth
Michela Malvisi, Fiorentina Palazzo, Nicola Morandi, Barbara Lazzari, John L Williams, Giulio Pagnacco, Giulietta Minozzi
Paratuberculosis in cattle is a chronic granulomatous gastroenteritis caused by Mycobacterium avium subsp. paratubercolosis (MAP) which is endemic worldwide. In dairy herds, it is responsible for huge economic losses. However, current diagnostic methods do not detect subclinical infection making control of the disease difficult. The identification of MAP infected animals during the sub-clinical phase of infection would play a key role in preventing the dissemination of the pathogen and in reducing transmission...
2016: PloS One
John T Crawford, Emily H Stanley
Streams and rivers are active processors of carbon, leading to significant emissions of CO2 and possibly CH4 to the atmosphere. Patterns and controls of CH4 in fluvial ecosystems remain relatively poorly understood. Furthermore, little is known regarding how major human impacts to fluvial ecosystems may be transforming their role as CH4 producers and emitters. Here, we examine the consequences of two distinct ecosystem changes as a result of human land use: increased nutrient loading (primarily as nitrate), and increased sediment loading and deposition of fine particles in the benthic zone...
July 2016: Ecological Applications: a Publication of the Ecological Society of America
Mohamed M El-Diasty, Heba A Ahmed, Ashraf E Sayour, Fatma I El Hofy, Asmaa B M B Tahoun, Saleh M Shafik
The objective of the present study was to estimate the seroprevalence of Brucella spp. in humans and cattle at Sharkia Governorate, Egypt. In addition, identification of Brucella spp. in milk samples by PCR and culture with the evaluation of the risk factors associated with Brucella spp. seroprevalence in humans were carried out. Overall, the seroprevalence of Brucella antibodies in the examined cattle was 23.8%, while in human participants it was 21%. The examination of 205 milk samples using PCR revealed that 6...
October 18, 2016: Vector Borne and Zoonotic Diseases
Vladimir Tomović, Marija Jokanović, Mila Tomović, Milana Lazović, Branislav Šojić, Snežana Škaljac, Maja Ivić, Sunčica Koćić-Tanackov, Igor Tomašević, Aleksandra Martinović
Concentrations of cadmium (Cd) and lead (Pb) were determined in livers (n = 52) and kidneys (n = 52) of female cattle (345-2717 days old) from dairy farms in the region Vojvodina. Cd and Pb were analysed by inductively coupled plasma-optical emission spectrometry, after microwave digestion. Cd and Pb concentrations did not exceed the Serbian and European maximum set limits in any sample. The Cd concentrations in the livers and kidneys ranged from 0.033 to 0.151 mg kg(-1) wet weight and from 0.055 to 0...
October 18, 2016: Food Additives & Contaminants. Part B, Surveillance
S McDougall, C W R Compton, N Botha
AIMS: To determine the factors associated with the selection of antimicrobials by dairy veterinarians, and the attitudes of those veterinarians and dairy farmers to antimicrobial usage and resistance. METHODS: Facilitated focus groups of dairy farmers (n=22) and an anonymous online survey of dairy cattle veterinarians (n=206 respondents) were used to determine prescribing behaviour, factors affecting prescribing of antimicrobials, and the attitudes of veterinarians and farmers to the use of antimicrobials and the risk of antimicrobial resistance (AMR)...
October 16, 2016: New Zealand Veterinary Journal
A S Hancock, P J Younis, D S Beggs, P D Mansell, M A Stevenson, M F Pyman
In the pasture-based, seasonally calving dairy herds of southern Australia, the mating period usually consists of an initial artificial insemination period followed by a period of natural service using herd bulls. Bull breeding soundness evaluations (BBSE) were performed on 256 bulls from 32 dairy herds in southwest Victoria, using guidelines produced by the Australian Cattle Veterinarians, before and immediately after a single natural mating period. At the same time, herd managers were questioned regarding the management of the bulls...
October 13, 2016: Journal of Dairy Science
Corwin D Nelson, John D Lippolis, Timothy A Reinhardt, Randy E Sacco, Jessi L Powell, Mary E Drewnoski, Matthew O'Neil, Donald C Beitz, William P Weiss
The need for vitamin D supplementation of dairy cattle has been known for the better part of the last century and is well appreciated by dairy producers and nutritionists. Whether current recommendations and practices for supplemental vitamin D are meeting the needs of dairy cattle, however, is not well known. The vitamin D status of animals is reliably indicated by the concentration of the 25-hydroxyvitamin D [25(OH)D] metabolite in serum or plasma, with a concentration of 30 ng/mL proposed as a lower threshold for sufficiency...
October 13, 2016: Journal of Dairy Science
Melissa Bainbridge, Jana Kraft
Transfer efficiencies of rumen-protected n-3 fatty acids (FA) to milk are low, thus we hypothesized that rumen-protection technologies allow for biohydrogenation and excretion of n-3 FA. The objectives of this study were to i) investigate the ruminal protection and post-ruminal release of the FA derived from the lipid-encapsulated echium oil (EEO), and ii) assess the bioavailability and metabolism of the EEO-derived FA through measuring the FA content in plasma lipid fractions, feces, and milk. The EEO was tested for rumen stability using the in situ nylon bag technique, then the apparent total-tract digestibility was assessed in vivo using six Holstein dairy cattle...
2016: PloS One
Jon Huxley
How well placed is UK cattle practice to meet future challenges? This question was addressed at a recent meeting of the Nottingham Dairy Health Innovation Forum. Forum member, Jon Huxley, reports on the outcome.
October 15, 2016: Veterinary Record
Meng Qi, Haiyan Wang, Bo Jing, Rongjun Wang, Fuchun Jian, Changshen Ning, Longxian Zhang
BACKGROUND: Giardia duodenalis is an important protozoan parasite. It is an established zoonotic pathogen and dairy calves have been implicated as one of the most important sources of human infection. This study was conducted to assess the prevalence and multilocus genotyping of G. duodenalis in dairy calves in the Xinjiang Uyghur Autonomous Region, northwestern China. FINDINGS: A total of 514 fresh fecal samples were randomly collected from dairy calves in 15 farms in Xinjiang, 13...
October 13, 2016: Parasites & Vectors
Inalda Angélica de Souza Ramos, Rafael José da Silva, Thiago Arcoverde Maciel, José Augusto Bastos Afonso da Silva, Otavio Luiz Fidelis, Pierre Castro Soares, Rosangela Zacarias Machado, Marcos Rogério André, Carla Lopes de Mendonça
The transplacental transmission is the primary route of Neospora caninum infection in bovine herds around the world. This study aimed to determine the frequency of transplacental transmission of the parasite in dairy cattle of Agreste region of Pernambuco through serological tests (IFAT and ELISA). Three hundred sixteen serum samples from cows and heifers and their offspring were analyzed. The transplacental transmission rate was 72.22% (13/18) for cows and 69.23% (9/13) for heifers by IFAT. ELISA test showed transplacental transmission rate of 43...
October 10, 2016: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
H J van der Fels-Klerx, Louise Camenzuli
This study investigated the presence of aflatoxin M1 (AfM1) in dairy cows' milk, given predefined scenarios for milk production, compound feed (CF) contamination with aflatoxin B1 (AfB1), and inclusion rates of ingredients, using Monte Carlo simulation modelling. The model simulated a typical dairy farm in the Netherlands. Six different scenarios were considered, based on two lactation and three CF composition scenarios. AfB1 contamination of the CF was based on results from the Dutch national monitoring programme for AfB1 in feed materials from 2000 until 2010...
October 9, 2016: Toxins
Lydie Ryšavá, Jaroslav Kříž
Diseases caused by Iodine deficit are preventable. Inter resort Commission for the solution of Iodine deficiency (MKJD) at State Institute for Health (SZU) in Prague has been taking effective measures which satisfied requirements of the Principles for sustainable elimination of diseases caused by Iodine deficiency ICCD WHO: 96 % of households is using iodized salt, average Iodine content is 25 mg/1 kg of salt. Data from studies show ioduria less 100 mcg/l in only 9 per cent of seniors, 5 % of children 7-10 years, 3 % of children 10-12 years...
2016: Vnitr̆ní Lékar̆ství
Isaac Olufemi Olatoye, Oluwayemisi Folashade Daniel, Sunday Ayobami Ishola
BACKGROUND AND AIM: There are global public health and economic concerns on chemical residues in food of animal origin. The use of antibiotics in dairy cattle for the treatment of diseases such as mastitis has contributed to the presence of residues in dairy products. Penicillin residues as low as 1 ppb can lead to allergic reactions and shift of resistance patterns in microbial population as well as interfere with the processing of several dairy products. Antibiotic monitoring is an essential quality control measure in safe milk production...
September 2016: Veterinary World
Motamed Elsayed Mahmoud, Fatma Ali Mahmoud, Adel Elsayed Ahmed
BACKGROUND: Improvement of dairy farms economics requires intensification, automatic milking, and artificial rearing methods. The ability to express normal behavior is one of the five freedoms to achieve animal welfare, whereas the display of abnormal behaviors is considered as an indicator of poor welfare. Cross-sucking is defined as sucking any body parts of pen-mate calves, whereas inter-sucking in cows is defined as sucking the udder or udder area. Previous studies showed that self- and cross-sucking during the calf-hood period could be a causal factor of milk sucking in adulthood...
September 2016: Veterinary World
Marnie L Brennan, Nick Wright, Wendela Wapenaar, Susanne Jarratt, Pru Hobson-West, Imogen F Richens, Jasmeet Kaler, Heather Buchanan, Jonathan N Huxley, Heather M O'Connor
Disease prevention and control practices are frequently highlighted as important to ensure the health and welfare of farmed animals, although little is known as to why not many practices are carried out. The aim of this study was to identify the motivators and barriers of dairy cattle farmers towards the use of biosecurity measures on dairy farms using a health psychology approach. Twenty-five farmers on 24 farms in Great Britain (GB) were interviewed using the Theory of Planned Behaviour framework. Results indicated that farmers perceived they had the ability to control what happened on their farms in terms of preventing and controlling disease, and described benefits from being proactive and vigilant...
October 11, 2016: Animals: An Open Access Journal From MDPI
Sara Armorini, James E Yeatts, Keena A E Mullen, Sharon E Mason, Elmira Mehmeti, Kevin L Anderson, Steve P Washburn, Ronald E Baynes
Thymol and carvacrol may be present in several phytoceutical products but there are no well-defined methods to measure these compounds in meat and milk from treated animals. U.S. regulatory authorities deem their presence as an adulteration of food. A rapid and sensitive HS-SPME-GC-MS/MS method was developed for the detection of thymol and carvacrol in bovine milk, plasma, liver, kidney, and fat. Inter- and intraday precision values were all less than 15.7 and 20.2% for thymol and carvacrol, respectively. The accuracy was in ranges of 69...
October 11, 2016: Journal of Agricultural and Food Chemistry
Jacob Brenner, Ditza Rotenberg, Shami Jaakobi, Yehuda Stram, Merisol Guini-Rubinstein, Sofia Menasherov, Michel Bernstein, Yudith Yaakobovitch, Dan David, Samuel Perl
Viruses of the Simbu serogroup cause lesions to foetuses that are seen at birth and that correlate with the stage of pregnancy at which the dam first contracts the virus. The Simbu serogroup comprises arboviruses known to cause outbreaks of abnormal parturitions in domestic ruminants; these abnormalities include abortion, stillbirth, and congenitally deformed neonates. Simbu serogroup members include: Akabane virus (AKAV), Aino virus, Cache Valley virus, and Schmallenberg virus. Lately, dairy herds calf malformations have been observed in Europe, where there have been reports of clinical manifestations such as diarrhoea, fever, and reduced milk yield in adult lactating cows...
September 30, 2016: Veterinaria Italiana
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