Ciencia Animal Brasileira最新文献_第3页

Clinical and laboratory indicators predictive of the negative outcome of gastrointestinal emergencies in cattle 临床和实验室指标预测牛胃肠道紧急情况的负面结果

Ciencia Animal Brasileira Pub Date : 2023-05-08 DOI: 10.1590/1809-6891v24e-74401e

G. S. Soares, J. Afonso, L. Coutinho, R. Souto, N. A. A. Silva, Â. I. Conceição, J. C. Silva, C. L. Mendonça

{"title":"Clinical and laboratory indicators predictive of the negative outcome of gastrointestinal emergencies in cattle","authors":"G. S. Soares, J. Afonso, L. Coutinho, R. Souto, N. A. A. Silva, Â. I. Conceição, J. C. Silva, C. L. Mendonça","doi":"10.1590/1809-6891v24e-74401e","DOIUrl":"https://doi.org/10.1590/1809-6891v24e-74401e","url":null,"abstract":"Abstract This study aimed to identify clinical and laboratory variables that could help predict the negative outcome in cattle affected by gastrointestinal emergencies. A retrospective cohort study was carried out using multivariate logistic regression analysis based on data collected from the clinical records of cattle hospitalized at the Garanhuns Bovine Clinic, UFRPE campus. One hundred and twenty-two cattle met the inclusion criteria established for the study. Among the clinical variables, heart rate (HR) and abdominal distension are associated with the outcome in animals with right displaced abomasum (RDA), and anorexia and 10% dehydration in animals with an obstructive intestinal disorder. Among the laboratory variables, plasma fibrinogen (PF) and total leukocyte count were associated with the outcome in animals with RDA, while PF and plasma L-lactate were associated with animals with an obstructive intestinal disorder. HR and the total leukocyte count remained in the final model of the regression adjusted for animals with RDA. On the other hand, plasma L-lactate and PF remained in the final model in the adjusted model for animals with an obstructive intestinal disorder. Cattle with RDA and HR higher than 90 bpm present an increased chance of having a negative outcome whereas cattle with obstructive intestinal disorder and plasma L-lactate higher than 1.84 mmol/L or PF higher than 850 mg/dL have a higher chance of not survive. Therefore, clinical and laboratory variables such as HR, fibrinogen, and plasma L-lactate are useful to predict the negative outcome in cattle with gastrointestinal emergencies, especially RDA and obstructive intestinal disorders.","PeriodicalId":38520,"journal":{"name":"Ciencia Animal Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67270477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Association of visual scores with reproductive traits in Nelore cattle using Bayesian Inference 用贝叶斯推理分析内洛雷牛视觉评分与生殖性状的关系

Ciencia Animal Brasileira Pub Date : 2023-05-08 DOI: 10.1590/1809-6891v24e-75081e

Byanka Bueno Soares, L. Brunes, F. Baldi, A. Carmo, M. Narciso, V. Magnabosco, R. Sainz, C. U. Magnabosco

{"title":"Association of visual scores with reproductive traits in Nelore cattle using Bayesian Inference","authors":"Byanka Bueno Soares, L. Brunes, F. Baldi, A. Carmo, M. Narciso, V. Magnabosco, R. Sainz, C. U. Magnabosco","doi":"10.1590/1809-6891v24e-75081e","DOIUrl":"https://doi.org/10.1590/1809-6891v24e-75081e","url":null,"abstract":"Abstract The use of morphological traits assessed using visual scores as indirect selection criteria in cattle has the advantage of evaluating young animals regarding potential productive and reproductive performance. This enables breeders to make earlier decisions compared to later measurements, such as scrotal circumference at 450 days (SC450) and stayability (STAY). The aim of this study was to estimate the genetic parameters for visual score traits and their associations with reproductive traits: scrotal circumference at 365 days of age (SC365), SC450, STAY, probability of precocious calving (PPC30) and age at first calving (AFC) in Nellore cattle. Visual score data from 4,175 Nellore cattle, with an average age of 22 months, and reproductive data from 3,075 cattle belonging to the HoRa Genetics Provada herd were used. The morphological traits were evaluated by the MERCOS methodology. The heritability estimates obtained ranged from 0.15 to 0.28 for visual scores and 0.10 to 0.54 for reproductive traits. Genetic correlations between visual scores and reproductive traits were generally low, except between: muscularity and PPC30; structure and STAY; racial and SC450; conformation and SC365, SC450, STAY, and AFC; navel and STAY and AFC; and sacrum and SC365, STAY, and AFC, which were moderate to high. The identification of animals with flat sacral bone (not protruding or sloping) can also be an efficient characteristic in the identification for early pregnancy, and together with the musculature score, they can be related to animals with lower age at the first calving.","PeriodicalId":38520,"journal":{"name":"Ciencia Animal Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67271315","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seroprevalence and risk factors associated with leukosis in cattle from Villlavicencio, Colombia 哥伦比亚维拉维森西奥牛血清学患病率和与白血病相关的危险因素

Ciencia Animal Brasileira Pub Date : 2023-05-08 DOI: 10.1590/1809-6891v24e-74298e

Jhoan Conde-Muñoz, N. Reyes-Bernal, Maria Fernanda Guatibonza-Garzon, J. Tobon, Diana Leal Valero, Blanca Lisseth Guzman Barragan

{"title":"Seroprevalence and risk factors associated with leukosis in cattle from Villlavicencio, Colombia","authors":"Jhoan Conde-Muñoz, N. Reyes-Bernal, Maria Fernanda Guatibonza-Garzon, J. Tobon, Diana Leal Valero, Blanca Lisseth Guzman Barragan","doi":"10.1590/1809-6891v24e-74298e","DOIUrl":"https://doi.org/10.1590/1809-6891v24e-74298e","url":null,"abstract":"Abstract Bovine leukosis is caused by an oncogenic virus of the genus Deltaretrovirus, causing losses associated with decreased production indicators and restrictions on exports of cattle and cattle products. The disease has a prolonged incubation period of between 1–5 years and the antibodies can be detected 2–3 weeks post infection. The disease can present asymptomatically, and develop persistent lymphocytosis or lymphosarcoma. The objective of this study was to estimate the prevalence and risk factors associated with bovine leukosis in Villavicencio, Colombia. Blood samples were taken from 636 animals, and obtained randomly from 24 herds. The samples were analysed using a Competition ELISA kit for the detection of anti-gp51 antibodies. Information on possible risk factors was collected, then OR and X2 were calculated, and statistically significant with p < 0.05 variables were included in a linear regression multivariate analysis. The general seroprevalence was 24.6% and the herd seroprevalence was 83.3%. The seroprevalence was 21.3% in males and 25.0% in females. The risk factors identified were abortion, non-bearing cows, artificial insemination, and use of common needles, Creole breed and participation in cattle exhibitions. The study confirmed the presence of bovine leukosis associated with reproductive and management factors.","PeriodicalId":38520,"journal":{"name":"Ciencia Animal Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67270776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Use of polymethylmethacrylate plaque as a treatment of cranioschisis associated with meningocele in a Girolando heifer: A case report 使用聚甲基丙烯酸甲酯斑块治疗吉兰多小母牛脑裂伴脑膜炎:一例报告

Ciencia Animal Brasileira Pub Date : 2023-05-08 DOI: 10.1590/1809-6891v24e-74519e

Nayne Vieira da Silva, D. Delfiol, M. Horr, J. P. E. Saut, G. M. Nogueira

{"title":"Use of polymethylmethacrylate plaque as a treatment of cranioschisis associated with meningocele in a Girolando heifer: A case report","authors":"Nayne Vieira da Silva, D. Delfiol, M. Horr, J. P. E. Saut, G. M. Nogueira","doi":"10.1590/1809-6891v24e-74519e","DOIUrl":"https://doi.org/10.1590/1809-6891v24e-74519e","url":null,"abstract":"Abstract Most genetic diseases affect purebred animals and are inherited as recessive genes. Cranioschisis refers to dysraphism, which occurs in the midline of the skull due to failure to close the cranial symphysis, which can lead to herniation of the meninges filled with cerebrospinal fluid (meningocele), where there is usually a projection of the meningeal tissue. Diagnosis is performed based on clinical examination, characteristic anatomopathological data, and complementary imaging tests. The surgical approach for correction of cranioschisis is the only described as a therapeutic solution and is indicated in cases in which the cranial synthesis defect does not allow for brain protrusion and there is only the occurrence of meningocele, in addition to the absence of severe signs of neurological alteration. This paper reports a case of the use of polymethylmethacrylate (PMMA) plaque to treat cranioschisis associated with meningocele in a Girolando heifer. The surgical opening of the frontonasal sacculation allowed draining a total liquid content of 488 mL, inspection, and suture of the envelope membrane. APMMA plaque, molded to the bone surface and anchored in the adjacent soft tissue, was used to cover the evidenced frontonasal bone opening. Despite the unfavorable prognosis of the disease, the cranioplasty surgery for the treatment of cranioschisis associated with meningocele using PMMA plaque obtained satisfactory results relative to the quality and maintenance of this animal’s life, evaluated at 19 months postoperatively.","PeriodicalId":38520,"journal":{"name":"Ciencia Animal Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67270995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of partially replacing corn with sugar cane molasses on blood parameters and composition of the M. longissimus thoracis of growing pigs 甘蔗糖蜜部分替代玉米对生长猪胸最长支原体血液参数和组成的影响

Ciencia Animal Brasileira Pub Date : 2023-05-08 DOI: 10.1590/1809-6891v24e-74872e

V. Peripolli, Gabriela Caillouel, Fernanda Ascencio Pace, J. Montes, Maiko Giorgi Philippe, J. L. Nörnberg, J. M. O. Oliveira Júnior, I. Bianchi, E. Schwegler, F. Moreira

{"title":"Effect of partially replacing corn with sugar cane molasses on blood parameters and composition of the M. longissimus thoracis of growing pigs","authors":"V. Peripolli, Gabriela Caillouel, Fernanda Ascencio Pace, J. Montes, Maiko Giorgi Philippe, J. L. Nörnberg, J. M. O. Oliveira Júnior, I. Bianchi, E. Schwegler, F. Moreira","doi":"10.1590/1809-6891v24e-74872e","DOIUrl":"https://doi.org/10.1590/1809-6891v24e-74872e","url":null,"abstract":"Abstract The effect of sugar cane molasses, as a partial replacement to corn in the diet, on blood parameters and composition of the M. longissimus thoracis (LT) in growing pigs was explored in this study. Twenty female pigs aged 63 days, and weighing 28.98 ± 3.56 kg, were randomly assigned to either the control or sugar cane molasses treatments. Molasses was included at the 3% level to partially replace corn in their diet. Blood samples were collected at the beginning and end of the experiments. The animals were slaughtered at 110 days of age after 47 days in the experiment, weighing 67.9 ± 5.58 kg, and an LT muscle sample was extracted and evaluated. Each animal was considered an experimental unit. The treatment had no effect on the length and area of the LT muscle. Backfat thickness was reduced when using the sugar cane molasses treatment (5.80 mm) compared to the control treatment (8.90 mm) (P < 0.05). Higher enzyme gamma-glutamyl transferase (GGT) levels were observed in animals of the control treatment (67.10 IU/L) compared to animals treated with the sugar cane molasses treatment (49.90 IU/L) (P < 0.05). Moreover, the proximal composition, fatty acid profile, and quality were not influenced by treatment. Sugar cane molasses, used as an energy source to partially replace corn in the diet of growing pigs at a level of 3%, reduced the backfat thickness of the pig carcass and improved the serum concentration of the enzyme gamma-glutamyl transferase in pigs.","PeriodicalId":38520,"journal":{"name":"Ciencia Animal Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67271020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Association of Kappa casein gene polymorphism with milk production traits in crossbred dairy cows 杂交奶牛Kappa酪蛋白基因多态性与产奶量性状的关系

Ciencia Animal Brasileira Pub Date : 2023-04-17 DOI: 10.1590/1809-6891v24e-74079e

Wefak J. Albazi, T. Al-Thuwaini, Muna Alamely, Zuhair MA. Jeddoa, Rana Mousa, Faten Al-Dawmy, Aqeel H. Atallah, Raeed Altaee, Eman Jabber, Fateh Al-Shimmary, Saba Salin, Nabaa Al-Himaery

{"title":"Association of Kappa casein gene polymorphism with milk production traits in crossbred dairy cows","authors":"Wefak J. Albazi, T. Al-Thuwaini, Muna Alamely, Zuhair MA. Jeddoa, Rana Mousa, Faten Al-Dawmy, Aqeel H. Atallah, Raeed Altaee, Eman Jabber, Fateh Al-Shimmary, Saba Salin, Nabaa Al-Himaery","doi":"10.1590/1809-6891v24e-74079e","DOIUrl":"https://doi.org/10.1590/1809-6891v24e-74079e","url":null,"abstract":"Abstract Milk’s qualitative and technological properties are greatly affected by genetic polymorphisms in the kappa-casein gene, and their polymorphisms may serve as informative markers of yield and composition. Thus, the objective of this study was to detect kappa-casein (kappa-CN) gene polymorphisms and their association with milk production traits in crossbred dairy cows. One hundred healthy crossbred (Friesian x Jenoubi) dairy animals between three and five years old were sampled for blood and milk during their first lactation. The genomic DNA was extracted from whole blood, and restriction fragment length polymorphism (RFLP-PCR) was used to determine the genotype of the kappa-CN gene. As a consequence of the restriction digestion of this fragment with Hind III, it showed three different restriction patterns: BB (453 base pairs uncut), AB (453, 206, and 225 base pairs), and AA (206 and 225 base pairs). Based on genetic diversity, the AB genotype was the most predominant (n = 67), with a frequency of 0.67. A variant genotype of the kappa-CN gene was associated with milk production traits in crossbred dairy cows. Animals with the AA variant produced a higher milk yield and a higher percentage of fat, casein, protein, and solids not fat (SNF) (P≤0.05) (1.397kg, 0.75%, 0.31%, 0.27%, and 0.68%, respectively) than those with the BB variant. A logistic regression analysis confirmed that the kappa-CN genotypes increase milk yield and casein content. Therefore, genetic variants of the kappa-CN gene could be used as genetic markers for improving milk production traits in dairy cattle.","PeriodicalId":38520,"journal":{"name":"Ciencia Animal Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67270827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Sealing strategies in corn silage and sheep performance in feedlots 玉米青贮封料策略与饲料场绵羊生产性能

Ciencia Animal Brasileira Pub Date : 2023-04-17 DOI: 10.1590/1809-6891v24e-74185e

K. C. Scheidt, T. G. Diaz, J. Machado, M. P. Osmari, J. Daniel, C. C. Jobim

{"title":"Sealing strategies in corn silage and sheep performance in feedlots","authors":"K. C. Scheidt, T. G. Diaz, J. Machado, M. P. Osmari, J. Daniel, C. C. Jobim","doi":"10.1590/1809-6891v24e-74185e","DOIUrl":"https://doi.org/10.1590/1809-6891v24e-74185e","url":null,"abstract":"Abstract The objective of this study was to evaluate the effects of different sealing strategies on aerobic stability and feed value of corn silage supplied to finishing lambs. The treatments were set up according to the silo sealing strategy: BP (black polyethylene film), BP + Bagasse (black polyethylene film + sugarcane bagasse) and BP + Silostop (Silostop® Orange oxygen barrier film + black polyethylene film). Six lambs per treatment were used, totaling 18 animals in an experimental period of 63 days. The silage from LP treatment presented the highest aerobic stability, however with lower dry matter digestibility coefficients. No significant differences were detected among treatments for intake and performance of lambs. But for final body weight, weight gain, daily average gain, feed efficiency and dry matter intake, the best results, in absolute value, were found for lambs fed with silage from LP + Bagasse treatment. The silage sealed exclusively with black polyethylene film showed greater aerobic stability. The different sealing strategies used in this experiment did not influence the performance of finishing Dorper x Santa Inês lambs.","PeriodicalId":38520,"journal":{"name":"Ciencia Animal Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67270584","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of mixed feeding strategies with different dietary energy: protein ratios on juvenile Nile tilapia (Oreochromis niloticus) 不同能量蛋白质比混合饲喂策略对尼罗罗非鱼幼鱼的影响

Ciencia Animal Brasileira Pub Date : 2023-04-17 DOI: 10.1590/1809-6891v24e-74420e

Isabela Litaiff, Samara Moesch, R. Sado, Á. J. Bicudo

{"title":"Effects of mixed feeding strategies with different dietary energy: protein ratios on juvenile Nile tilapia (Oreochromis niloticus)","authors":"Isabela Litaiff, Samara Moesch, R. Sado, Á. J. Bicudo","doi":"10.1590/1809-6891v24e-74420e","DOIUrl":"https://doi.org/10.1590/1809-6891v24e-74420e","url":null,"abstract":"Abstract The evaluation of feeding strategies is necessary to ensure the sustainability of aquaculture. This study assessed the effect of two diets with different E:P ratios (9.6 and 10.3 kcal of digestible energy per gram of crude protein) on Nile tilapia juveniles. The growth, feed and nutrient use, economic parameters, whole-body composition, and liver steatosis of fish were evaluated. There was no significant effect of treatments on the growth, feed intake, feed conversion ratio, uniformity, and survival of the fish. The lower feed cost (P>0.05) per biomass or 1000 units produced was registered in Nile tilapia juveniles fed with 10.3 kcal DE/g CP diet for seven days. The contribution of ether extract in fish weight gain was reduced (P=0.055) by the increased use of the 10.3 kcal DE/g CP diet in the feeding strategies. The same trend was observed in fish whole-body lipid levels. Body indexes were similar (P>0.05) among fish from the different treatments. Mixing diets with different E:P ratios in a weekly feeding protocol does not impair productive performance of Nile tilapia juveniles. However, considering the cost of feeding, the recommendation is to supply a diet with 33%CPand 3.4 kcal/DE for seven days per week.","PeriodicalId":38520,"journal":{"name":"Ciencia Animal Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67270804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antibacterials and behaviors adopted by milk producers in Goiás, Brazil 巴西Goiás牛奶生产商采用的抗菌剂和行为

Ciencia Animal Brasileira Pub Date : 2023-04-17 DOI: 10.1590/1809-6891v24e-73715e

Da Silva, Dyana Ribeiro dos Santos, S. Freitas, A. D. F. Noronha Filho, N. Borges, P. J. B. Queiroz, L. A. F. Silva

{"title":"Antibacterials and behaviors adopted by milk producers in Goiás, Brazil","authors":"Da Silva, Dyana Ribeiro dos Santos, S. Freitas, A. D. F. Noronha Filho, N. Borges, P. J. B. Queiroz, L. A. F. Silva","doi":"10.1590/1809-6891v24e-73715e","DOIUrl":"https://doi.org/10.1590/1809-6891v24e-73715e","url":null,"abstract":"Abstract Milk and its derivatives are rich in nutrients and widely consumed by the population. However, the presence of chemical residues is frequent in these products. This study aimed to carry out a diagnosis of the use of antibacterials and evaluate the knowledge about these drugs and behaviors adopted by dairy producers in Goiás, Brazil. A total of 286 dairy farms in 36 municipalities in the State were visited and interviews were conducted with the owner or auxiliary workforce. The questions addressed the production parameters of the property and the use of antibacterials. The answers were presented in percentages and graphs. Statistical analysis was performed using Pearson’s chi-square test at a 5% significance level. Only 26.2% of the producers used antibacterials indicated by veterinarians and all producers (100%) disposed of milk with residues inappropriately. Tetracycline and penicillin were the most used among the 21 cited active principles. Enteritis (22.1%), cattle tick fever (21.1%), and mastitis (19.4%) were the main diseases treated with antibacterials. A total of 37.4% of respondents were unable to distinguish antibacterials from other drugs. Moreover, the more specialized the farm, the greater the veterinary assistance and the greater the care for antibacterial treatments. Most respondents (51.7%) had incomplete elementary education. These results provide important information about how rural producers in the State of Goiás use antibacterials and serve as a basis for future interventions. The need for greater access by producers to veterinary services in Goiás is evident to reduce the unnecessary and inappropriate use of antibacterials.","PeriodicalId":38520,"journal":{"name":"Ciencia Animal Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67270125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Seasonality effect on the physiological and productive responses of crossbred dairy cows to the equatorial Amazon climate 季节性对杂交奶牛对赤道亚马逊气候生理和生产反应的影响

Ciencia Animal Brasileira Pub Date : 2023-04-17 DOI: 10.1590/1809-6891v24e-73559e

D. V. D. Costa, Vinícius Moreira dos Santos, Antônia Valcemira Domingos de Oliveira, Clebson Lucas de Souza, G. R. Moreira, B. L. Rosa, E. Reis, Adriano Melo de Queiroz

{"title":"Seasonality effect on the physiological and productive responses of crossbred dairy cows to the equatorial Amazon climate","authors":"D. V. D. Costa, Vinícius Moreira dos Santos, Antônia Valcemira Domingos de Oliveira, Clebson Lucas de Souza, G. R. Moreira, B. L. Rosa, E. Reis, Adriano Melo de Queiroz","doi":"10.1590/1809-6891v24e-73559e","DOIUrl":"https://doi.org/10.1590/1809-6891v24e-73559e","url":null,"abstract":"Abstract The objective of this study was to evaluate the seasonal effect of months of the year upon the physiological and productive responses of crossbred dairy cows raised in an Amazonian climate. Twenty lactating cows were evaluated, fed on Brachiaria decumbens pasture, with free access to water and mineral supplementation. Data from climate variables air temperature (AT), relative humidity (RH), rainfall (RA) and temperature and humidity index (THI) were recorded dur ing the months of January to April 2019. The physiological data collected were: respiratory rate (RR, mov/min), heart rate (HR, beats/min), rectal temperature (RT, ºC), udder surface temperature (UST, ºC), body surface temperature (BST, ºC), dorsum surface temperature (DST, ºC), front surface temperature (FST, ºC) and rear shin temperature (RST). Milk production (MP) was also measured. There was a significant difference (P<0.05) of RST and RR with values ranging from 34.8 to 35.5°C and 32.0 to 36.2 mov/min, respectively. There were no significant difference (P>0.05) for BST, and the values for MP and THI were 3.8; 3.8; 4.6; 4.1 kg and 77.7; 79.7; 80.6; 80.1, respectively. It was concluded that there was a seasonal effect of the months of the year evaluated on the respiratory rate of animals, however, it did not change the MP and the THI. The Amazon environment is conducive to causing thermal stress in lactating cows raised on pasture, requiring the use of shading to facilitate the ability of these animals to dissipate heat.","PeriodicalId":38520,"journal":{"name":"Ciencia Animal Brasileira","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67270243","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0