Relevant bibliographies by topics / Dairy cattle – Breeding – Québec (Province)

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  1. Journal articles
  2. Dissertations / Theses
  3. Conference papers

Academic literature on the topic 'Dairy cattle – Breeding – Québec (Province)'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Dairy cattle – Breeding – Québec (Province)"

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NIE, JING, GUI-QUAN SUN, XIANG-DONG SUN, et al. "MODELING THE TRANSMISSION DYNAMICS OF DAIRY CATTLE BRUCELLOSIS IN JILIN PROVINCE, CHINA." Journal of Biological Systems 22, no. 04 (2014): 533–54. http://dx.doi.org/10.1142/s021833901450020x.

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Dairy cattle brucellosis is a chronic bacterial disease, which is caused by Brucella abortus and mainly characterized by abortion in dairy cattle. With the rapid development of breeding industry of milk cows in China, the infectious cases of dairy cattle brucellosis show an increasing trend. Particularly in Jilin province, the annual number of the positive cases of dairy cattle was only 3 cows in 1987, and went up to 168 cows in 2005. Based on the situation of the brucellosis infection in Jilin province, we propose an Susceptible-Exposed-Infected-Virus (SEIV) dynamical model with outside trans
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Hagan, Bernard Ato, and Roger Cue. "Generation intervals in Canadian dairy cattle herds." Canadian Journal of Animal Science 100, no. 1 (2020): 175–83. http://dx.doi.org/10.1139/cjas-2019-0053.

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Genetic evaluation records for the Canadian Holstein, Ayrshire, Jersey, and Brown Swiss bulls and cows born from 1950 and 1960, respectively, were used to study the generation intervals (L) along the four-path selection model. The objectives of the study were to determine the L in the four dairy cattle breeds and the effects of some environmental factors and variations among herds or artificial insemination (AI) studs on the L achieved. Total L of the four selection paths was reduced by 55% from 29.2 yr in 1980 to 13.2 yr in 2016 in the Holstein breed. Substantial reductions in total L were al
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Borusiewicz, Andrzej. "Technological Preconditions in Dairy Farms." Agricultural Engineering 21, no. 2 (2017): 59–68. http://dx.doi.org/10.1515/agriceng-2017-0016.

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AbstractThe paper presents the impact of the applied technologies on milk yield of cows in dairy farms. The scope of the research covered technical equipment used in the dairy cattle breeding and milking in 50 farms on the area of Grajewo Province in Podlaskie Voivodeship. The studies were carried out in 2016 with the diagnostic survey method based on the interview questionnaire developed for this purpose. The studies proved that 68% of the respondents from Grajewo Province maintain cattle in a stanchion-tide stable system and the remaining 32% in a free stall system. The group (48%) of the su
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Aleksic, S., S. Sunfang, Z. Jingming, et al. "Cattle production: PR China and Republic of Serbia." Biotehnologija u stocarstvu 28, no. 4 (2012): 635–48. http://dx.doi.org/10.2298/bah1204635a.

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The paper presents data on the cattle industry in the People's Republic of China and the Republic of Serbia. China is the third largest dairy producing country and the third largest beef producing country in the world. In 2011, the dairy cow population in China was 14.4 million. Chinese dairy breed is mainly obtained by grading hybridization from Holstein, Simmental, etc. which were introduced from foreign countries, and local cattle breeds for long time to form the offspring with stable genetic characteristics. Currently, the dairy breeds cultured in China mainly include Chinese Holstein, Chi
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Lardé, Hélène, David Francoz, Jean-Philippe Roy, et al. "Comparison of Quantification Methods to Estimate Farm-Level Usage of Antimicrobials in Medicated Feed in Dairy Farms from Québec, Canada." Microorganisms 9, no. 9 (2021): 1834. http://dx.doi.org/10.3390/microorganisms9091834.

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Monitoring antimicrobial usage (AMU) in dairy cattle is becoming common in a growing number of countries, with the ultimate goal to improve practices, reduce the development of antimicrobial resistance, and protect human health. However, antimicrobials delivered as feed additives can be missed by some of the quantification methods usually implemented. Our objective was to compare three methods of quantification of in-feed AMU in Québec dairy herds. We recruited 101 dairy producers for one year in the Québec province. Quantities of antimicrobials were calculated by farm from: (1) feed mills inv
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Alapala Demirhan, Sibel, and Mevlüt Yenilmez. "Uşak İli Süt Sığırı Yetiştiriciliğinin Mevcut Durumu Sorunları ve Çözüm Önerileri." Turkish Journal of Agriculture - Food Science and Technology 7, no. 12 (2019): 2198. http://dx.doi.org/10.24925/turjaf.v7i12.2198-2203.2951.

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In this study, it was aimed to determine the organizational structure, current state and problems of the dairy cattle breeding enterprises in the province of Uşak and to develop solutions to these problems according to the number of cattle they have. In the study, a questionnaire consisting of 95 questions was applied to 165 enterprises owners selected by multi-stage random sampling method and the obtained data were evaluated with the help of SPSS program package. Enterprises are grouped by animal assets; the enterprises having 1-9 heads cattle were classified as the first group, the enterpris
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Lardé, Hélène, David Francoz, Jean-Philippe Roy, et al. "Comparison of Quantification Methods to Estimate Farm-Level Usage of Antimicrobials Other than in Medicated Feed in Dairy Farms from Québec, Canada." Microorganisms 9, no. 5 (2021): 1106. http://dx.doi.org/10.3390/microorganisms9051106.

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The objective of the study was to compare three quantification methods to a “garbage can audit” (reference method, REF) for monitoring antimicrobial usage (AMU) from products other than medicated feed over one year in 101 Québec dairy farms. Data were collected from veterinary invoices (VET method), from the “Amélioration de la Santé Animale au Québec” provincial program (GOV method), and from farm treatment records (FARM method). The AMU rate was reported in a number of Canadian Defined Course Doses for cattle (DCDbovCA) per 100 cow-years. Electronic veterinary sales data were obtained for al
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Nasrulloh, Mukh Fajar, Ari Sulistyo Wulandari, Indriawati Indriawati, Endang Tri Margawati, and Slamet Diah Volkandari. "Detection of the CD18 gene mutation as a marker of BLAD genetic disorder of Holstein-Friesian cattle in West Java." Livestock and Animal Research 18, no. 2 (2020): 116. http://dx.doi.org/10.20961/lar.v18i2.42933.

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<p class="MDPI17abstract"><strong>Objective: </strong>Bovine Leukocyte Adhesion Deficiency (BLAD) is a genetic disorder in Holstein-Friesian (HF) cattle that have a significant economic impact on dairy cattle breeding. Mutation c.383A>G in Cluster of Differentiation Molecule 18 (CD18) gene was known as related to BLAD. This study aimed to detect the CD18 gene mutation that causes BLAD of HF cattle in the West Java Province.</p><p class="MDPI17abstract"><strong>Methods: </strong>The genomic DNA was extracted from 88 blood samples of HF cattle fro
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Jankovic, Dobrila, Bozidarka Markovic, Radica Djedovic, Snezana Trivunovic, and Momcilo Saran. "Genetic parameters of the type traits of Holstein-Friesian primiparous dairy cows." Genetika 53, no. 2 (2021): 533–44. http://dx.doi.org/10.2298/gensr2102533j.

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The aim of this study was to determine the level and variability of type traits in primiparous Holstein-Friesian cows, as well as to assess the additive genetic variance of type traits and heritability coefficients. The research was conducted on a data set of linearly evaluated primiparous Holstein-Friesian cows, which is ceded by the Main dairy cattle breed organization in the Province of Vojvodina, which is a unit of the Department of Animal Science, at the Faculty of Agriculture in Novi Sad. Data of 24226 primiparous Holstein-Friesian cows, refer to the period 2012-2015, were analysed. The
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Pietersma, D., R. Lacroix, D. Lefebvre, R. Cue, and K. M. Wade. "Trends in growth and age at first calving for Holstein and Ayrshire heifers in Quebec." Canadian Journal of Animal Science 86, no. 3 (2006): 325–36. http://dx.doi.org/10.4141/a05-080.

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The objective was to provide an overview of heifer growth in Quebec and analyze its relationship with age at first calving. Heifer body weights, wither heights, body condition scores, and breeding events collected from 1993 to 2003 were obtained and combined with first lactation data, mature body weights, type classification final score and frame/capacity, and estimated breeding values for milk, conformation, frame/capacity, and Lifetime Profit Index. Analyses were restricted to 39 animal-level variables. The resulting data set consisted of 44 989 Holsteins and 2294 Ayrshires with data availab
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Dissertations / Theses on the topic "Dairy cattle – Breeding – Québec (Province)"

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Almeida, Rodrigo de. "Study of abnormal test-days in Quebec Holstein cows." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23995.

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The influences of some environmental and genetic factors on the incidence of abnormal test-days in milk-recorded cows enrolled in the Quebec Dairy Herd Analysis Service (QDHAS) was determined in this study. Conditions Affecting Records (CAR) codes, collected monthly by QDHAS's supervisors, are possible explanation for a reduced production in the day of test. For the purpose of this study, CAR codes were used to analyze the incidence of health problems under generalized linear models methodology. Poisson and logistic regression model analyses were able to model the number of cases of abnormal t
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Ali, Inamullah. "Surface irrigation adapted to the land spreading of dairy farm effluent." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=83961.

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An important number of Canadian dairy farms manage their manure as solids and in doing so, must handle large volumes of manure seepages and milk house wastewater (dairy farm effluent-DFE). The present project adapted surface irrigation as a more economical and sustainable method of disposing of this large volume of DFE on cropped land near their storage facility. The experimental surface irrigation system consisted of a gated pipe installed perpendicular to the slope of the field allowing the discharged DFE to run down the slope.<br>The adaptation of the system and the measurement of its
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Hird, Wendy Louise. "The effect of milk pricing on genetic selection goals in British Columbia and Quebec dairy cattle populations." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/24683.

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This study has compared the effect of milk pricing systems on the selection goals of dairy producers in two provinces of Canada, British Columbia (BC), and Quebec. These provinces were chosen for comparison as BC produces milk largely for a fluid market, while Quebec produces milk for a manufacturing market. Within BC, due to a higher utilization and higher milk price, the value/kg of skim on Vancouver Island was higher than that of the Vancouver Lower Mainland over the study period 1963-1982. Between the two provinces, the value/kg of skim in BC was found to be consistently higher than in Que
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Messele, Teklay. "Economic and environmental viability of substituting soybeans for lupins : the case of dairy farming in southwest Quebec." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0019/MQ37149.pdf.

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Dürr, João Walter. "Genetic and phenotypic studies on culling in Quebec Holstein cows." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34635.

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A series of studies were conducted to evaluate genetic and phenotypic aspects of culling, herd life and survival in Quebec Holstein herds. Data consisted of lactation records obtained from the Programme d'Analyse des Troupeaux Laitiers du Quebec (PATLQ) files, which included 2.2 Million records before the editing procedures. The average productive herd life in Quebec herds was approximately 33 months, corresponding to an average replacement rate of MIND, for both milk recording options. Herds enrolled in the PATLQ official option had cows with longer calving intervals and culled their heifers
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Blackburn, Lynda G. "Quantification and estimation of nitrous oxide emissions from dairy manure applications in a western Quebec pea-forage and an eastern Ontario alfalfa-forage cropping system : by Lynda G. Blackburn." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=100771.

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Agricultural systems are known to emit nitrous oxide (N2O)---a potent greenhouse gas. The roving flux tower measuring system of Agriculture and Agri-Food Canada was used to make continuous measurements of N2O fluxes in an edible pea field in Western Quebec in 2003-04 and then in an alfalfa-timothy forage field in Eastern Ontario in 2004-05. The experiment was designed to capture, at the field scale, the expected large N2O emissions occurring as a result of fertilizer application for a year, in relation to both large precipitation events and spring thaw.<br>Growing season N2O emissions averaged
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Cantin, Jean. "The environmental risks linked to different manure application periods /." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99326.

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More intensive production of hogs and cattle in Quebec during the past decade has benefited local economies, but led to over-fertilization of agricultural soils and eutrophication of waterways. Provincial ministries responded to this issue by developing regulations to control manure applications. The objective of this thesis was to determine the environmental risk associated with applying farm manure in the late fall. Spreading manure in fall after harvesting corn was a common practice for many agricultural producers in Quebec, but this period is now viewed as very risky, having more negative
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Burchard, Javier F. "Effects of 60 Hz electric and magnetic fields on productivity, reproductive hormones, plasma minerals and minerals and neurotransmitter metabolites in cerebrospinal fluid in dairy cattle." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=41992.

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This study was designed to determine the potential biological effects of electric and magnetic fields (EMF), generated by 735 kV alternating current (AC) high tension lines upon the hormonal profile, some health-related parameters, stress response and productivity in dairy cattle. An EMF exposure chamber to house eight animals at one time was constructed. Forty-nine cows were divided according to their production stage; 8 pregnant non-lactating cows, 16 pregnant lactating cows, 16 non-pregnant lactating cows and 9 non-lactating non-pregnant heifers. They were exposed to an EMF of 10 kilovolts
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Nqeno, Noluvuyo. "Reproductive performance of cows in sweet and sour veld types under communal production systems in the Eastern Cape Province of South Africa." Thesis, University of Fort Hare, 2008. http://hdl.handle.net/10353/141.

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The objective of the study was to evaluate cow reproductive performance in the sweetveld and sourveld communal grazing areas of the Eastern Cape Province, South Africa. In the first experiment, farmer perceptions were obtained using participatory rural appraisals. Farmers ranked lack of fences, tick-borne diseases, poor animal condition during winter and poor breeding practices, respectively as major constraints limiting cattle production in the Eastern Cape. Cattle, sheep and goats, in that order, were ranked as the most important livestock species and were mainly kept for meat, cash and cere
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Conference papers on the topic "Dairy cattle – Breeding – Québec (Province)"

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"Cost-benefit Analysis of Dairy Cattle Breeding under Circular Agriculture Mode-- take the Sunshine Dairy Farm in DaWang Town, Guangrao County, Shandong Province as an Example." In 2020 International Conference on Social and Human Sciences. Scholar Publishing Group, 2020. http://dx.doi.org/10.38007/proceedings.0000113.

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