RESUMEN

The socioeconomic factors influencing small-scale dairy producers in the border area between Ecuador and Colombia were meticulously identified. Employing a non-experimental design, the study leveraged multivariate statistical analysis to discern key determinants. Data processing was executed using the statistical software SPSS v27, facilitating comprehensive analysis. A random survey was administered to 532 small and medium-scale dairy producers in the Carchi province of Ecuador, employing a structured questionnaire supplemented with a Likert scale for nuanced insights. Based on 35 original variables, seven determining factors were identified in dairy farms: political representation, adequate housing, equipment, innovation, empathy, profitability, social welfare, which combined explain 60.95% of the system's variability. Such factors affect production, the level of household income, as well as their effect on the standard of living of households. Three groups were formed, the first with a low perception of economic development (Traditionalists 33.3%); the second with a better expectation of economic development (Modernizers 27.6%); and the third, identified with greater economic development (Innovators 10.3%). Each group presents cases with a low to high standard of living perspective. The groups have peculiarities in terms of their performance that can be applied to the entire population. A significant relation was established between socioeconomic factors and standard of living.

Asunto(s)

Industria Lechera , Factores Socioeconómicos , Ecuador , Colombia , Industria Lechera/economía , Industria Lechera/estadística & datos numéricos , Animales , Encuestas y Cuestionarios , Bovinos , Femenino , Granjas/estadística & datos numéricos

RESUMEN

OBJECTIVE: The aim of this study was to evaluate differences in lameness prevalence among Austrian dairy farms for both lactating and dry cows as assessed by locomotion scoring (LCS 1-5) by an expert and a student who had received brief training in locomotion scoring and by farmers' estimates and by farmers' lameness assessments. MATERIALS AND METHODS: In total, 632 cows from 11 farms were evaluated, including 553 lactating and 79 dry cows. Lameness prevalence was calculated for all farms collectively as well as for individual farms. The ratio of lameness prevalence determined by the student/expert (Student's Assessment Index: SAI), the ratio between farmers' assessments/expert assessments (Farmers' Assessment Index: FAI) and the ratio between farmers' estimates/expert assessments (Farmers' Detection Index: FDI) were calculated. RESULTS: For the expert, the mean lameness prevalence (LCS≥2) among all 632 cows was 63.1%, while for the student it was 60.2%, and the farmers' assessment was 37.3%, resulting in a mean difference of 25.8% between the expert and the farmers. In cows with LCS 2, the SAI was 99.6%, in cows with LCS 3, it was 84.4%, and in cows with LCS≥4, it was 88.6%. The mean FDI and FAI for all cows on the 11 farms were 35.1% and 58.2%, respectively, with wide variation across farms (6.8-79.1% and 17.8-94.7%, respectively). Overall, lactating and dry cows exhibited a high mean lameness prevalence (63.9% vs. 59.6%), which differed by only 4.3%. CONCLUSIONS AND CLINICAL RELEVANCE: Farmers should actively assess their cattle for lameness on a regular basis. Moreover, they should be trained to identify lame cows (lactating and dry cows), especially those showing mild lameness (LCS 2). Since the recently trained student achieved similar high recognition rates as the expert, it is assumed that a training in locomotion scoring can contribute to higher recognition rates.

Asunto(s)

Enfermedades de los Bovinos , Industria Lechera , Agricultores , Lactancia , Cojera Animal , Bovinos , Animales , Cojera Animal/epidemiología , Cojera Animal/diagnóstico , Enfermedades de los Bovinos/epidemiología , Enfermedades de los Bovinos/diagnóstico , Femenino , Prevalencia , Lactancia/fisiología , Agricultores/estadística & datos numéricos , Industria Lechera/estadística & datos numéricos , Austria/epidemiología , Estudiantes/estadística & datos numéricos

RESUMEN

This study investigates the economic burden of calf mortality in Turkish dairy farms and its impact on the national economy. We gathered research data by directly surveying dairy farms in seven provinces, each representing a distinct region of Turkiye. By conducting these surveys, we captured data on various aspects of calf mortality, including losses among non-pregnant cows aged two and older, pregnant cows, and those experiencing complications during birth, as well as losses within the 0-6 month age bracket. These figures were then amalgamated to establish the overall calf loss rate. Using a fractional probit model, we examined the empirical relationship between total calf loss rates and the socio-demographic characteristics of farm operators and their establishments. Our findings revealed that approximately 82 % of farms experienced some degree of calf loss, with the calf loss rate among dairy cattle farming accounting for nearly 20 %. Notably, regional disparities emerged as a key observation, alongside the identification of certain socio-demographic farm characteristics that proved statistically significant. Specifically, factors such as the prevalence of local cattle breeds, the proportion of crossbred bulls, as well as the numbers of heifers and calves, stood out as influential. Further scrutiny, fortified by ANOVA tests and relationships between the number of cows and total calf loss rate, underscored pronounced geographical disparities in post-estimation calf loss rates. Meanwhile, correlation heatmaps illuminated noteworthy relationships between specific cattle traits and the extent of calf losses. These findings not only underscore the severity of the issue but also highlight the urgency of preventive measures. In light of these insights, we offer pertinent policy recommendations to stakeholders and policymakers aimed at mitigating this considerable economic burden effectively.

Asunto(s)

Enfermedades de los Bovinos , Industria Lechera , Animales , Bovinos , Industria Lechera/economía , Industria Lechera/estadística & datos numéricos , Turquía/epidemiología , Femenino , Enfermedades de los Bovinos/mortalidad , Enfermedades de los Bovinos/economía , Enfermedades de los Bovinos/epidemiología , Mortalidad , Granjas/economía , Granjas/estadística & datos numéricos , Masculino , Embarazo

RESUMEN

The reproductive efficiency and milk yield of cows are crucial factors in a dairy farm's profitability. However, abortions can have a negative impact on these factors. While the morbidity of abortion has been estimated in many countries, information on the burden on dairy cattle in tropical conditions is limited, and Costa Rica is a good example. This study aims to assess the incidence and recurrence of bovine abortion in dairy cattle from Costa Rica. The study analysed the morbidity of abortion in Costa Rican dairy herds between 2010 and 2022. The incidence rate (IR) and the recurrence rate (ReR) were calculated per 100 cow-months at risk using data from the Veterinary Automated Management and Production Control Programme (VAMPP). The dataset comprised 1032,457 lactations from 330,265 cows in 1134 specialized dairy herds. Abortions were classified either as early foetal mortality (EFM) or late foetal mortality (LFM). Rates were estimated based on cow breed, lactation number, and ecological zone to which the farm belongs. The IR of general abortion, EFM, and LFM cases were 0.98, 0.41, and 0.57 per 100 cow-months at risk, respectively. No statistically significant differences were found in the IR between cow breed, lactation number, and ecological zone, nor for the trend of abortions over calving years. The first ReR (for cows that had one previous abortion during the lactation) was 0.95, and the second ReR (for cows that had two previous abortions during the lactation) was 1.41 per 100 cow-months at risk. These results suggest that bovine abortions are an important ongoing problem in dairy farms in Costa Rica with potentially detrimental effects on the reproductive and productive performance of cows and may be representative of other specialized tropical dairy systems in Latin America.

Asunto(s)

Aborto Veterinario , Enfermedades de los Bovinos , Industria Lechera , Animales , Bovinos , Costa Rica/epidemiología , Aborto Veterinario/epidemiología , Aborto Veterinario/etiología , Incidencia , Femenino , Enfermedades de los Bovinos/epidemiología , Industria Lechera/estadística & datos numéricos , Recurrencia , Embarazo

RESUMEN

This Medical News article discusses the current H5N1 avian influenza outbreak in US dairy cattle and its implications for occupational and public health.

Asunto(s)

Enfermedades de los Bovinos , Brotes de Enfermedades , Industria de Alimentos , Subtipo H5N1 del Virus de la Influenza A , Gripe Aviar , Salud Pública , Animales , Bovinos , Femenino , Humanos , Enfermedades de los Bovinos/epidemiología , Enfermedades de los Bovinos/transmisión , Enfermedades de los Bovinos/virología , Industria Lechera/estadística & datos numéricos , Gripe Aviar/epidemiología , Gripe Aviar/transmisión , Gripe Aviar/virología , Gripe Humana/tratamiento farmacológico , Gripe Humana/epidemiología , Gripe Humana/transmisión , Gripe Humana/virología , Estados Unidos/epidemiología , Oseltamivir/uso terapéutico , Antivirales/uso terapéutico , Carne Roja/efectos adversos , Carne Roja/virología , Leche/efectos adversos , Leche/virología , Abastecimiento de Alimentos , Calidad de los Alimentos , Subtipo H5N1 del Virus de la Influenza A/patogenicidad

Asunto(s)

Industria Lechera , Subtipo H5N1 del Virus de la Influenza A , Gripe Aviar , Gripe Humana , Leche , Exposición Profesional , Adulto , Animales , Femenino , Humanos , Masculino , Persona de Mediana Edad , Industria Lechera/estadística & datos numéricos , Agricultores , Subtipo H5N1 del Virus de la Influenza A/aislamiento & purificación , Gripe Aviar/epidemiología , Gripe Aviar/transmisión , Gripe Aviar/virología , Gripe Humana/diagnóstico , Gripe Humana/epidemiología , Gripe Humana/transmisión , Gripe Humana/virología , Estados Unidos/epidemiología , Leche/virología

RESUMEN

This study was aimed at determining the median days of calving to conception interval (days open) and identifying the major risk factors determining the days open in dairy cows. Both retrospective and longitudinal studies were conducted on dairy cows located in the Dessie and Kombolcha towns of South Wollo Zone, northeast Ethiopia from August 2019 to August 2020. The Kaplan-Meier model of survival analysis was used to determine the median days open and compare the survival distribution of each level of explanatory variables likely to influence the days open of dairy cows. Accordingly, the overall conception rate of dairy cows was 44.7%. The median days open in the study was 154 days. There is a 16% probability of surviving (i.e, the probability that the conception event has not yet occurred) at the end of 210 days postpartum period. The Cox proportional hazard model was used to quantify the effect of each of the explanatory variables on the days open in the first 210 days postpartum. Factors that had a significant effect (p<0.05) on the calving to conception interval were the season of insemination, breeding system, calving to insemination interval, and herd milk yield level. However, the peripartum, postpartum disorders, and the town of the farm are not significant (p>0.05). Accordingly, cows inseminated in the autumn season (HR = 4.45), cows less than or equal to 85 days calving to insemination interval (HR = 2.41), artificially inseminated cows (HR = 1.45), and high herd milk yield cow had a higher probability of becoming pregnant. In conclusion, the management practices and breeding decisions seem to be important determinants to improve the conception rate or decrease the days open in dairy cows.

Asunto(s)

Industria Lechera/estadística & datos numéricos , Fertilidad , Fertilización , Reproducción , Animales , Bovinos , Etiopía , Femenino , Estudios Longitudinales , Periodo Posparto , Embarazo , Estudios Retrospectivos

RESUMEN

A central tenant of the Comprehensive Everglades Restoration Plan (CERP) is nutrient reduction to levels supportive of ecosystem health. A particular focus is phosphorus. We examine links between agricultural production and phosphorus concentration in the Everglades headwaters: Kissimmee River basin and Lake Okeechobee, considered an important source of water for restoration efforts. Over a span of 47 years we find strong correspondence between milk production in Florida and total phosphate in the lake, and, over the last decade, evidence that phosphorus concentrations in the lake water column may have initiated a long-anticipated decline.

Asunto(s)

Industria Lechera/estadística & datos numéricos , Lactancia , Lagos/química , Fosfatos/análisis , Animales , Bovinos , Ecosistema , Femenino , Florida , Modelos Estadísticos

RESUMEN

Listeria monocytogenes is a foodborne pathogen and a resilient environmental saprophyte. Dairy farms are a reservoir of L. monocytogenes, and strains can persist on farms for years. Here, we sequenced the genomes of 250 L. monocytogenes isolates to investigate the persistence and mobile genetic elements (MGEs) of Listeria strains inhabiting dairy farms. We performed a single-nucleotide polymorphism (SNP)-based phylogenomic analysis to identify 14 monophyletic clades of L. monocytogenes persistent on the farms for ≥6 months. We found that prophages and other mobile genetic elements were, on average, more numerous among isolates in persistent than nonpersistent clades, and we demonstrated that resistance genes against bacitracin, arsenic, and cadmium were significantly more prevalent among isolates in persistent than nonpersistent clades. We identified a diversity of mobile elements among the 250 farm isolates, including three novel plasmids, three novel transposons, and a novel prophage harboring cadmium resistance genes. Several of the mobile elements we identified in Listeria were identical to the mobile elements of enterococci, which is indicative of recent transfer between these genera. Through a genome-wide association study, we discovered that three putative defense systems against invading prophages and plasmids were negatively associated with persistence on farms. Our findings suggest that mobile elements support the persistence of L. monocytogenes on dairy farms and that L. monocytogenes inhabiting the agroecosystem is a potential reservoir of mobile elements that may spread to the food industry. IMPORTANCE Animal-derived raw materials are an important source of L. monocytogenes in the food industry. Knowledge of the factors contributing to the pathogen's transmission and persistence on farms is essential for designing effective strategies against the spread of the pathogen from farm to fork. An increasing body of evidence suggests that mobile genetic elements support the adaptation and persistence of L. monocytogenes in the food industry, as these elements contribute to the dissemination of genes encoding favorable phenotypes, such as resilience against biocides. Understanding of the role of farms as a potential reservoir of these elements is needed for managing the transmission of mobile elements across the food chain. Because L. monocytogenes coinhabits the farm ecosystem with a diversity of other bacterial species, it is important to assess the degree to which genetic elements are exchanged between Listeria and other species, as such exchanges may contribute to the rise of novel resistance phenotypes.

Asunto(s)

Antibacterianos/farmacología , Bacitracina/farmacología , Industria Lechera/estadística & datos numéricos , Secuencias Repetitivas Esparcidas/genética , Listeria monocytogenes/efectos de los fármacos , Listeria monocytogenes/genética , Metales Pesados/farmacología , Animales , Bovinos , Genoma Bacteriano , Listeria monocytogenes/clasificación , Filogenia , Polimorfismo de Nucleótido Simple , Profagos/genética , Factores de Virulencia/genética , Secuenciación Completa del Genoma

RESUMEN

Reproductive performance is a key factor in determining the profitability of dairy farm, which is affected by many factors such as environment and diseases. Mastitis is a common and important disease, which has caused huge economic losses to the dairy industries worldwide. Mammary gland infection causes immune responses, resulting in the abnormal secretion of cytokines and hormones and abnormal function of the reproductive system such as the ovary, corpus luteum, uterus and embryo. Cows with mastitis have delayed oestrus, decreased pregnancy rate and increased risk of abortion. The adverse effects of mastitis on reproductive performance are affected by many factors, such as occurrence time, pathogen and cow factors. This paper primarily reviews the progress in the effects and mechanisms of mastitis on reproductive performance, with emphasis on maternal transcriptome, genomic analysis, epigenetic modification, microbiota, inflammatory regulation and immune evasion mechanism of mastitis, aiming to provide directions for the prevention and control of mastitis in the future.

Asunto(s)

Mastitis Bovina/complicaciones , Mastitis Bovina/patología , Reproducción , Aborto Veterinario , Animales , Bovinos , Industria Lechera/economía , Industria Lechera/estadística & datos numéricos , Epigénesis Genética , Femenino , Mastitis Bovina/inmunología , Mastitis Bovina/microbiología , Embarazo , Índice de Embarazo , Transcriptoma

RESUMEN

Dairy farm systems have intensified to meet growing demands for animal products, but public opposition to this intensification has also grown due, in part, to concerns about animal welfare. One approach to addressing challenges in agricultural systems has been through the addition of new technologies, including genetic modification. Previous studies have reported some public resistance towards the use of these technologies in agriculture, but this research has assessed public attitudes toward individual practices and technologies and few studies have examined a range of practices on dairy farms. In the present study, we presented participants with four scenarios describing dairy practices (cow-calf separation, the fate of excess dairy calves, pasture access and disbudding). Citizens from Canada and the United States (n = 650) indicated their support (on a 7-point scale) toward five approaches (maintaining standard farm practice, using a naturalistic approach, using a technological approach, or switching to plant-based or yeast-based milk production) aimed at addressing the welfare issues associated with the four dairy practices. Respondents also provided a text-based rationale for their responses and answered a series of demographic questions including age, gender, and diet. Participant diet affected attitudes toward milk alternatives, with vegetarians and vegans showing more support for the plant-based and yeast-based milk production. Regardless of diet, most participants opposed genetic modification technologies and supported more naturalistic practices. Qualitative responses provided insight into participants' values and concerns, and illustrated a variety of perceived benefits and concerns related to the options presented. Common themes included animal welfare, ethics of animal use, and opposition toward technology. We conclude that Canadian and US citizens consider multiple aspects of farm systems when contemplating animal welfare concerns, and tend to favor naturalistic approaches over technological solutions, especially when the latter are based on genetic modification.

Asunto(s)

Industria Lechera/normas , Leche , Adolescente , Adulto , Bienestar del Animal , Animales , Actitud , Canadá , Bovinos , Industria Lechera/métodos , Industria Lechera/estadística & datos numéricos , Femenino , Humanos , Masculino , Persona de Mediana Edad , Organismos Modificados Genéticamente , Opinión Pública , Encuestas y Cuestionarios , Estados Unidos , Adulto Joven

RESUMEN

Market participation among beef cattle farmers is key to ensuring better income, food security, and sustainable beef supply. Farmers in the traditional beef cattle sector, nevertheless, are well known for their low market participation. This study, thus, sought to examine factors that influenced market participation among beef cattle farmers in the Meatu district of Simiyu region, Tanzania. The study randomly selected a sample size of 393 farmers. The cross-sectional data collected through interviews and questionnaires were analyzed using descriptive statistics and ordinary least squares (OLS) regression models. The descriptive analyses showed that the average age of the interviewees was 53.73 years with a family size of 13.11. On average, the respondents had about 24.14 years of farming experience. Most of the respondents (67.9%) had primary education. Among the respondents, about 61.3%, 4.6%, and 32.6% had access to market information, farm credits, and veterinary services, respectively. The average cattle herd size was 53.46 heads. About 90.1% of farmers had participated in the markets by selling an average of 5 heads each, per year. This study has revealed low volume of sales, low education levels, and poor access to credits and veterinary services as the major factors that limit market participation. Furthermore, econometric results show that the key factors that significantly influenced farmers to increase the volume of beef cattle sales in the market at P < 0.05 included price, herd size, off-farm income, distance to market, age of the farmer, and cattle fattening. Moreover, membership in cooperatives, access to market information, and farming experience also had significant influence at P < 0.05. This study recommends establishment of strategic cooperatives to function not only as a communication channel for farm credits, price, market information, and training on commercial farming, but also to assist farmers in selection of profitable markets.

Asunto(s)

Crianza de Animales Domésticos/economía , Comercio/economía , Industria Lechera/economía , Agricultores/estadística & datos numéricos , Granjas/estadística & datos numéricos , Crianza de Animales Domésticos/métodos , Animales , Bovinos , Comercio/estadística & datos numéricos , Estudios Transversales , Industria Lechera/métodos , Industria Lechera/estadística & datos numéricos , Agricultores/educación , Granjas/economía , Humanos , Masculino , Persona de Mediana Edad , Encuestas y Cuestionarios , Tanzanía

RESUMEN

The present study aimed to compare the welfare of dairy cows kept in two traditional husbandry systems (semi-intensive and intensive farming) in south-eastern Sicily. A total of 18 dairy farms (nine semi-intensive and nine intensive) were evaluated with a multicriteria system adapted for Sicilian conditions and obtained simplifying the model of the European Food Safety Authority (EFSA). Values of welfare measures, collected by inspections of the farms (general well-being indicators, ventilation system, resting areas [cubicles or bedding], flooring, milking parlours and waiting area, manger and watering equipment), and those of health categories (cases of abortions, hypocalcemia, displacement of abomasum, acidosis/ketosis, enteritis, hoof problems, and mastitis) obtained through the farm records, were compared using Mann-Whitney and Chi-squared tests, respectively. Data showed significant differences (p ≤ .05) about the variables related to welfare categories such as housing ventilation system, resting area, manger, and water equipment that were better in the semi-intensive system than the intensive system. No significant differences were observed about the variables related to health indicators. The results demonstrated that in Sicily the semi-intensive farm is better than the intensive to satisfy the conditions of animal welfare.

Asunto(s)

Crianza de Animales Domésticos/métodos , Bienestar del Animal/estadística & datos numéricos , Industria Lechera/métodos , Industria Lechera/estadística & datos numéricos , Animales , Bovinos , Femenino , Vivienda para Animales , Sicilia/epidemiología , Ventilación/métodos

RESUMEN

Veterinarians are the main source of information for farmers regarding the responsible use of antibiotics in farm animals and how to reduce the risk of antibiotic resistance. Consequently, understanding how veterinarians perceive their clients' and colleagues' antibiotic use and their own beliefs about the development of antibiotic resistance is essential to determining areas in which antibiotic use practices can be improved to minimize the emergence of antibiotic resistance. An international cross-sectional study was carried out using a questionnaire designed to elucidate perceptions, attitudes, and concerns of dairy veterinarians regarding antibiotic use and the emergence of antibiotic resistance in dairy farming. The questionnaire was initially administered to veterinarians attending the International Bovine Mastitis Conference in Milano, Italy, 2018, followed by veterinarian members of the National Mastitis Council, and all conference registrants. A total of 71 participants from 21 countries participated in the survey, the majority were from the United States and member countries of the European Union. Logistic regression analysis was conducted to identify predictors of veterinarians' level of concern about the development of antibiotic resistance on their clients' farms. Associations were described with odds ratios (ORs) and the associated 95 % confidence intervals (95 % CIs). Free text responses where participants shared their views on the reason for overprescribing antibiotics by veterinarians were analyzed using thematic analysis. Participants perceived that nearly half of their clients overuse or inappropriately use antibiotics, and nearly half of their colleagues overprescribe or inappropriately prescribe antibiotics. After controlling for other factors, the odds of veterinarians being concerned about antibiotic resistance on dairy farms they served decreased by a factor of 0.91 for each additional year of participants' experience working with dairy cattle (OR = 0.91, 95 % CI = 0.84-0.99). Participants concerned about antibiotic resistance on clients' dairy farms were also more likely to consider better adherence to drug labelling as important for reducing farmers' antibiotic use (OR = 6.86, 95 % CI = 1.21-38.93). Thematic analysis revealed four themes surrounding the perceived reasons for veterinarians' overprescribing of antibiotics: (i) knowledge, (ii) attitudes, (iii) barriers, and (iv) rules and regulations. The study findings will aid in the development of strategies to improve antibiotic use in dairy farming and educational initiatives looking to enhance the communication between veterinarians and farmers about judicious use of antibiotics.

Asunto(s)

Antibacterianos , Industria Lechera , Farmacorresistencia Microbiana , Conocimientos, Actitudes y Práctica en Salud , Percepción , Veterinarios/psicología , Animales , Bovinos , Estudios Transversales , Industria Lechera/estadística & datos numéricos , Italia

RESUMEN

Leptospirosis is a neglected zoonotic disease of unknown magnitude that has been overlooked and underreported, influenced by complex interactions established among humans, animals, and the environment; certain occupations, such as working with livestock, have an increased risk of exposure. We conducted a cross trans-sectional study in 374 serum samples obtained from workers and residents of dairy farms in the Tizayuca Basin, Hidalgo, Mexico, to determine the prevalence of anti-Leptospira antibody and the risk factors associated to this type of environment. The determination of anti-Leptospira antibodies was obtained by microscopic agglutination test. Seropositivity was defined from titles > 1:100. Seropositivity of anti-Leptospira antibodies among the population was 46.8% (176/374) (95% Cl 41.9-52.1). Thirty-nine percent (146/74) of the analyzed serum reacted to the Hardjo serovar (Sejröe serogroup). Eighty-eight percent (8/9) slaughterhouse workers tested were seropositive. Those who belonged to an ethnic group had OR 1.78 (IC 1.02-3.11, P = 0.041). Seropositivity was associated with having a secondary school level or lower, with OR 1.79 (IC 0.97-3.29, P = 0.058). Exposure to Leptospira in a dairy production farm is a risk factor for humans. Our findings can contribute to strengthening the intervention of the Public Health System to prevent this zoonosis that prevails in dairy farm environments.

Asunto(s)

Industria Lechera/estadística & datos numéricos , Exposición a Riesgos Ambientales/estadística & datos numéricos , Granjas/estadística & datos numéricos , Leptospira/patogenicidad , Leptospirosis/epidemiología , Adulto , Animales , Anticuerpos Antibacterianos/sangre , Estudios Transversales , Femenino , Humanos , Leptospira/inmunología , Leptospirosis/sangre , Leptospirosis/microbiología , Leptospirosis/transmisión , Masculino , México/epidemiología , Factores de Riesgo , Estudios Seroepidemiológicos , Serogrupo , Zoonosis/sangre , Zoonosis/epidemiología , Zoonosis/microbiología , Zoonosis/transmisión

RESUMEN

Yield gaps in milk production are here defined as the differentials between the actual yield obtained by the dairy farmer and the potential farm yield (production achieved by the top 10% of farmers: Gap 2) as well as the differential between this potential farm yield and the yield registered in the research stations (Gap 1). Assessment of yield gaps provides valuable information on potential production enhancement and drivers behind yield gaps. Milk production can be increased by narrowing the predominant large yield gaps in resource-poor smallholder farming system. Hence, this study assessed the milk yield gap and factors affecting the yield gap in Ri-Bhoi district of Meghalaya, a state located in the north-eastern Himalayan region of India. This research paper provides a scope for exploring the possibilities for improving dairy production in the state as well as contributing to literature through incorporating crucial determinants responsible for milk yield gap. A sample of 81 respondents was drawn purposely from two blocks of the district. The results indicated that the average number of cattle per household was 9.38 in standard animal units. The total yield gap was estimated at 6.20 l (91.06%) per day, composed of 0.80 l (11.76%) per day of yield gap I and 5.40 l (79.30%) per day of yield gap II. This demonstrates that the top performing farms were achieving a production level not dissimilar to that obtained on the research stations, but many were doing far less well. The size of cattle shed, dairy farming experience, concentrate price and human labour were the important determinants of the yield gap. Hence, encouraging the right stocking density of cattle, training on the preparations of home-made concentrates, access to cheap and quality concentrates, incorporating training and experience sharing on proper dairy management practices and use of technology could benefit the dairy farmers of the region.

Asunto(s)

Bovinos/fisiología , Industria Lechera/métodos , Lactancia/fisiología , Leche/estadística & datos numéricos , Agricultura/métodos , Animales , Industria Lechera/educación , Industria Lechera/estadística & datos numéricos , Femenino , India , Embarazo

RESUMEN

The decline of milk production in crossbred cattle during the onset of summer was evaluated using lactation records of the cows (n = 48) maintained at the Livestock Research Station, Thiruvazhamkunnu, for the period between January 2019 and March 2019. Climate data were obtained from an automatic weather station maintained on the campus. The temperature-humidity index (THI) was used to assess the thermal stress on animals. Values varied between 70.78 and 83.93 during the study period, indicating that the cows were exposed to mild and moderate stress. Highly significant negative correlations (p < 0.01) were observed between the average temperature, THI, and milk production. Linear, logarithmic, power, and polynomial models linking milk production and THI were used to fit the data. The coefficient of determination (R2) in general exceeded 0.85 and these equations could be used to model the drop in milk production or predict production loss due to thermal stress. The rate of decline in daily milk production observed in the study was 2.13% per unit increase in THI. A general linear model that included THI, parity, and the stage of lactation as independent variables, and milk production as a response variable, was also tested. Parity and stages of lactation were observed to influence forenoon and afternoon milk production significantly (p < 0.01). The temperature-humidity index also had a significant effect on forenoon milk production (p < 0.05) and afternoon milk production (p < 0.01).

Asunto(s)

Industria Lechera/estadística & datos numéricos , Respuesta al Choque Térmico/fisiología , Lactancia , Clima Tropical , Animales , Bovinos , Enfermedades de los Bovinos , Femenino , Calor , Humedad , Modelos Lineales , Leche , Modelos Estadísticos , Dinámicas no Lineales , Paridad , Embarazo , Estaciones del Año , Temperatura , Tiempo (Meteorología)

RESUMEN

Animal's well-being, growth, and production are modulated by environmental conditions, and managemental practices and can be deleteriously affected by global warming phenomenon. In the recent years, unprecedented climatic fluctuations like sustained higher temperatures and humidity, heat waves, and solar flares have led to economic losses in $ billions to both milk and meat industry. It is estimated that by 2050, the US dairy industry alone will borne more than $1.7 billion loss. As human dependency on animal products like milk, meat, and eggs for nutrition is exponentially rising, there is urgency for maximum production. The high yielding animals are already under tremendous metabolic pressure making them more susceptible to adverse climatic conditions. When exposed to heat stress, livestock display a variety of behavioral and physiological acclimatization as essential survival strategies, but at the cost of decreased milk, meat, or egg production. Most of the studies have explored the heat stress in animals and its effect on different milk productions in a specific region or country. A clear understanding of the impact of global warming on dairy enterprise is yet to be comprehended. So this exploratory study will analyze impact of global warming on current milk production trends, economics, and future perspectives.

Asunto(s)

Bovinos/fisiología , Industria Lechera , Cabras/fisiología , Respuesta al Choque Térmico , Leche/metabolismo , Oveja Doméstica/fisiología , Animales , Industria Lechera/economía , Industria Lechera/estadística & datos numéricos , Industria Lechera/tendencias

RESUMEN

The aim of this study was to identify social and farm factors influencing the knowledge of foot-and-mouth disease (FMD), factors influencing participation in FMD vaccination, and vaccination coverage. The study was conducted with 180 traditional dairy farmers who were engaged in cattle and buffalo farming located in three veterinary ranges of the Ampara district in the eastern province of Sri Lanka, during September and October 2019. The probit and tobit regression models were applied to determine the factors. On an average, the scores for knowledge of FMD and hygiene management were calculated as 54.5% and 49.2%, respectively. Farmers' knowledge of FMD was strongly associated with gender, level of education, and participation in the farmer training program (p < 0.01). The vaccination behavior was enhanced significantly by the number of animals, farming experience, knowledge of FMD score (p < 0.05), and hygiene management score (p < 0.1). It was revealed that social and farm factors contributed to the knowledge of FMD and vaccination behavior. Therefore, we recommend that the livestock educational training program will motivate better participation in the FMD control plan in Sri Lanka.

Asunto(s)

Búfalos , Enfermedades de los Bovinos/prevención & control , Fiebre Aftosa/prevención & control , Conocimientos, Actitudes y Práctica en Salud , Vacunación/veterinaria , Animales , Bovinos , Enfermedades de los Bovinos/psicología , Industria Lechera/estadística & datos numéricos , Agricultores/estadística & datos numéricos , Fiebre Aftosa/psicología , Sri Lanka , Vacunación/estadística & datos numéricos

RESUMEN

BACKGROUND: Mycobacterium bovis (bTB) is a potential health hazard to dairy workers. This study uses the One Health wholistic framework for examining bovine tuberculosis (TB) and its relationship to human health. This approach can help bridge surveillance data gaps and contribute to disease control and prevention programs for dairy farm workers, cattle, and the environment. The primary objective of this study was to compare the self-reported history of TB among dairy workers in Bailey County, Texas, with occupational categories of risk and exposure to TB. METHODS: A cross-sectional study was conducted among dairy workers. Job positions were used as a proxy for exposure to cattle-high and medium/low. We employed bivariate analyses to examine differences between groups using both the chi-square test and the nonparametric Kruskal-Wallis test. RESULTS: Of the 293 dairy workers invited, 77.0% (n = 225) participated. No statistically significant associations were found between job categories and reported history of TB exposure. Workers in the high group were younger, Guatemalan males with lower levels of formal education, more likely to be single with no children, and cohabitating with coworkers compared with the medium/low group. CONCLUSION/APPLICATION TO PRACTICE: Self-reported TB history among dairy workers is an imprecise measure of being previously diagnosed with TB. Dairy workers at risk for occupationally acquired TB could be tested for TB before employment and tested periodically thereafter, and more expeditiously treated if a positive test is obtained. Future studies should focus on the feasibility of offering on-farm health services, such as TB screening.

Asunto(s)

Industria Lechera/estadística & datos numéricos , Autoinforme/estadística & datos numéricos , Tuberculosis/diagnóstico , Adulto , Animales , Bovinos , Estudios Transversales , Industria Lechera/organización & administración , Femenino , Humanos , Masculino , Persona de Mediana Edad , Factores de Riesgo , Estadísticas no Paramétricas , Texas/epidemiología , Tuberculosis/epidemiología , Zoonosis/diagnóstico , Zoonosis/epidemiología