Pub Date : 2023-08-17DOI: 10.4025/actascianimsci.v45i1.61533
Amel Benatallah, Sofiane Boudjellaba, Wahiba Zenad, Amel Milla, Faiçal Ghozlane, Michel Marie
The objective of this study was to determine the frequency and degree of discomfort in dairy cows and the risk factors associated by taking into account six animal welfare indicators included in the Welfare Quality® Protocol (WQ®): lying time, lying outside lying area, collision and cleanliness assessed on three body areas: udder, hindquarters and hind limbs. These indicators were carried out on 1,200 dairy cows belonging to 100 dairy farms in the province of Algiers, which 53% were kept in permanent tie stalls and 47% in partial tie stalls. Observation results showed a low average overall score of comfort (40.8 ± 10.62). This was mainly related to a long lying time (5.9s ± 0.89) of which 41.0% of the farms surveyed exceeded the alert threshold (>6.3s) and 39.0% the alarm threshold (>5.2s), a very high degree of dirtiness in udder (62.6%±21.9), hind quarters (60.6%±21.5) and hind limbs (60.6±21.4). As a result, the majority of farms exceeded the alert thresholds: 100.0% (udder), 86.0% (hindquarters) and 63.0% (hind limbs). Highly significant correlations were observed between the different aspects of comfort assessed (p < 0.0001). To reconcile dairy cows’ welfare and productivity, it is essential to improve their comfort.
{"title":"Assessment of dairy cows comfort in Algerian farms by the Welfare Quality® Protocol","authors":"Amel Benatallah, Sofiane Boudjellaba, Wahiba Zenad, Amel Milla, Faiçal Ghozlane, Michel Marie","doi":"10.4025/actascianimsci.v45i1.61533","DOIUrl":"https://doi.org/10.4025/actascianimsci.v45i1.61533","url":null,"abstract":"The objective of this study was to determine the frequency and degree of discomfort in dairy cows and the risk factors associated by taking into account six animal welfare indicators included in the Welfare Quality® Protocol (WQ®): lying time, lying outside lying area, collision and cleanliness assessed on three body areas: udder, hindquarters and hind limbs. These indicators were carried out on 1,200 dairy cows belonging to 100 dairy farms in the province of Algiers, which 53% were kept in permanent tie stalls and 47% in partial tie stalls. Observation results showed a low average overall score of comfort (40.8 ± 10.62). This was mainly related to a long lying time (5.9s ± 0.89) of which 41.0% of the farms surveyed exceeded the alert threshold (>6.3s) and 39.0% the alarm threshold (>5.2s), a very high degree of dirtiness in udder (62.6%±21.9), hind quarters (60.6%±21.5) and hind limbs (60.6±21.4). As a result, the majority of farms exceeded the alert thresholds: 100.0% (udder), 86.0% (hindquarters) and 63.0% (hind limbs). Highly significant correlations were observed between the different aspects of comfort assessed (p < 0.0001). To reconcile dairy cows’ welfare and productivity, it is essential to improve their comfort.","PeriodicalId":7149,"journal":{"name":"Acta Scientiarum. Animal Sciences","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136337947","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}
Pub Date : 2023-08-17DOI: 10.4025/actascianimsci.v45i1.61509
Geraldo Magela da Cruz Pereira, Sebastião Martins Filho, Renata Veroneze, Luiz Fernando Brito, Vinícius Silva dos Santos, Leonardo Siqueira Glória
This study aimed to propose and compare metrics of accuracy and bias of genomic prediction of breeding values for traits with censored data. Genotypic and censored-phenotypic information were simulated for four traits with QTL heritability and polygenic heritability, respectively: C1: 0.07-0.07, C2: 0.07-0.00, C3: 0.27-0.27, and C4: 0.27-0.00. Genomic breeding values were predicted using the Mixed Cox and Truncated Normal models. The accuracy of the models was estimated based on the Pearson (PC), maximal (MC), and Pearson correlation for censored data (PCC) while the genomic bias was calculated via simple linear regression (SLR) and Tobit (TB). MC and PCC were statistically superior to PC for the trait C3 with 10 and 40% censored information, for 70% censorship, PCC yielded better results than MC and PC. For the other traits, the proposed measures were superior or statistically equal to the PC. The coefficients associated with the marginal effects (TB) presented estimates close to those obtained for the SLR method, while the coefficient related to the latent variable showed almost unchanged pattern with the increase in censorship in most cases. From a statistical point of view, the use of methodologies for censored data should be prioritized, even for low censoring percentages.
{"title":"Alternative measures to evaluate the accuracy and bias of genomic predictions with censored records","authors":"Geraldo Magela da Cruz Pereira, Sebastião Martins Filho, Renata Veroneze, Luiz Fernando Brito, Vinícius Silva dos Santos, Leonardo Siqueira Glória","doi":"10.4025/actascianimsci.v45i1.61509","DOIUrl":"https://doi.org/10.4025/actascianimsci.v45i1.61509","url":null,"abstract":"This study aimed to propose and compare metrics of accuracy and bias of genomic prediction of breeding values for traits with censored data. Genotypic and censored-phenotypic information were simulated for four traits with QTL heritability and polygenic heritability, respectively: C1: 0.07-0.07, C2: 0.07-0.00, C3: 0.27-0.27, and C4: 0.27-0.00. Genomic breeding values were predicted using the Mixed Cox and Truncated Normal models. The accuracy of the models was estimated based on the Pearson (PC), maximal (MC), and Pearson correlation for censored data (PCC) while the genomic bias was calculated via simple linear regression (SLR) and Tobit (TB). MC and PCC were statistically superior to PC for the trait C3 with 10 and 40% censored information, for 70% censorship, PCC yielded better results than MC and PC. For the other traits, the proposed measures were superior or statistically equal to the PC. The coefficients associated with the marginal effects (TB) presented estimates close to those obtained for the SLR method, while the coefficient related to the latent variable showed almost unchanged pattern with the increase in censorship in most cases. From a statistical point of view, the use of methodologies for censored data should be prioritized, even for low censoring percentages.","PeriodicalId":7149,"journal":{"name":"Acta Scientiarum. Animal Sciences","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136337951","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}
Pub Date : 2023-08-17DOI: 10.4025/actascianimsci.v45i1.61507
Raimundo Nonato Colares Camargo Junior, Camila Monteiro de Macedo, Tatiana Vieira da Silva, Welligton Conceição da Silva, Ellen Patricia Correa Lisboa
Leptospirosis is an infectious disease that affects practically all domestic and wild animals, which can become carriers and, as a consequence, will contribute to the spread of the microorganism in nature. The present study aims to detect the occurrence of leptospirosis against by the microscopic serum agglutination test in animals at the Zoo of the Centro Universitário da Amazônia (ZOOUNAMA). 26 adult animals of both sexes and of the following species: 9 Sapajus apella, 2 Cebus kaapori, 3 Ateles marginatus, 10 Ateles paniscus, 1 Chiropetes satanas, 1 Allouata belzebul. Of the animals studied, 3 (11.5%) were reagents to be taken against Leptospira spp. The serovars found in the different species were: Icterohaemorragiae, Balum, Hardjo and Grippothyphosa. SAM proved to be efficient to detect against leptospira in non-human primates. Icterohaemorragiae type serum occurred with research results showing that it is also important in leptospirosis in non-human primates.
钩端螺旋体病是一种影响几乎所有家畜和野生动物的传染病，它们可以成为带菌者，因此将有助于自然界中微生物的传播。本研究旨在通过显微镜血清凝集试验检测Universitário da Amazônia中央动物园(ZOOUNAMA)动物中钩端螺旋体病的发生。雌雄成虫26只，下列种类:无鳞棘足鼠9只，kaapori棘足鼠2只，边际棘足鼠3只，全棘足鼠10只，印度棘足鼠1只，belzebul棘足鼠1只。研究动物中3只(11.5%)为钩端螺旋体抗体，血清型分别为:icterohaemorgiae、Balum、Hardjo和gripathyphosa。结果表明，SAM对非人类灵长类动物钩端螺旋体的检测是有效的。研究结果表明，黄疸型血清在非人类灵长类动物钩端螺旋体病中也很重要。
{"title":"Incidence of leptospirosis in non-human primates at the santarém zoo, Pará, Brazil","authors":"Raimundo Nonato Colares Camargo Junior, Camila Monteiro de Macedo, Tatiana Vieira da Silva, Welligton Conceição da Silva, Ellen Patricia Correa Lisboa","doi":"10.4025/actascianimsci.v45i1.61507","DOIUrl":"https://doi.org/10.4025/actascianimsci.v45i1.61507","url":null,"abstract":"Leptospirosis is an infectious disease that affects practically all domestic and wild animals, which can become carriers and, as a consequence, will contribute to the spread of the microorganism in nature. The present study aims to detect the occurrence of leptospirosis against by the microscopic serum agglutination test in animals at the Zoo of the Centro Universitário da Amazônia (ZOOUNAMA). 26 adult animals of both sexes and of the following species: 9 Sapajus apella, 2 Cebus kaapori, 3 Ateles marginatus, 10 Ateles paniscus, 1 Chiropetes satanas, 1 Allouata belzebul. Of the animals studied, 3 (11.5%) were reagents to be taken against Leptospira spp. The serovars found in the different species were: Icterohaemorragiae, Balum, Hardjo and Grippothyphosa. SAM proved to be efficient to detect against leptospira in non-human primates. Icterohaemorragiae type serum occurred with research results showing that it is also important in leptospirosis in non-human primates.","PeriodicalId":7149,"journal":{"name":"Acta Scientiarum. Animal Sciences","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136337946","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}
Pub Date : 2023-08-17DOI: 10.4025/actascianimsci.v45i1.61721
Isabella Clarissa Vasconcelos Rêgo, Julio César Amaral Cardoso, José Augusto Amorim Silva do Sacramento, Márcia Mourão Ramos Azevedo, Joseph Simões Ribeiro, Ruy Bessa Lopes, Lucinewton Silva de Moura, Rosivaldo de Alcântara Mendes, Paulo Sérgio Taube
Analyzing the organochlorine pesticide (OCP) content in milk is relevantbecause it helps evaluate the quality of milk that reaches the consumer's table and also helps identify the geographical areas where there is a high possibility of contamination. Accordingly,thispilot project was aimed at determining the extent of contamination by OCP residues and their metabolites in fresh cow's milk in Mojuí dos Campos and Belterra, Pará, using solid-phase extraction (SPE) and gas chromatography coupled with electron capture detection (GC-ECD). The OCPs evaluated in this study weredichlorodiphenyltrichloroethane (DDT) and its metabolites (dichlorodiphenyldichloroethylene (DDE) and dichlorodiphenyldichloroethane (DDD)), hexachlorocyclohexane (HCH) (α, β, γ, and δ), endosulfanα and β, andendosulfansulfate. None of the thirty bovine milk samples analyzedshowed any contamination with OCPs.TheOCP content was within the limit of quantification of the method. The results of this study add to the existing knowledge on the quality ofbovine milk produced in these locations. However, further researchon other environmental matricesis required to confirm the results obtained in this study.
分析牛奶中的有机氯农药(OCP)含量是相关的，因为它有助于评估到达消费者餐桌的牛奶的质量，也有助于确定污染可能性很高的地理区域。因此，本试点项目旨在利用固相萃取(SPE)和气相色谱-电子捕获检测(GC-ECD)技术，确定Mojuí dos Campos和parterra地区新鲜牛奶中OCP残留物及其代谢物的污染程度。本研究评估的ocp为二氯二苯三氯乙烷(DDT)及其代谢物(二氯二苯二氯乙烯(DDE)和二氯二苯二氯乙烷(DDD))、六氯环己烷(HCH) (α、β、γ和δ)、磺胺内酯α和β和磺胺内酯。分析的30份牛奶样本中没有发现任何ocp污染。ocp含量在方法定量限度内。这项研究的结果增加了对这些地方生产的牛奶质量的现有知识。然而，需要对其他环境矩阵进行进一步的研究来证实本研究的结果。
{"title":"Levels of organochlorine contaminants in natural bovine milk marketed in Mojuí dos Campos and Belterra, Brazil","authors":"Isabella Clarissa Vasconcelos Rêgo, Julio César Amaral Cardoso, José Augusto Amorim Silva do Sacramento, Márcia Mourão Ramos Azevedo, Joseph Simões Ribeiro, Ruy Bessa Lopes, Lucinewton Silva de Moura, Rosivaldo de Alcântara Mendes, Paulo Sérgio Taube","doi":"10.4025/actascianimsci.v45i1.61721","DOIUrl":"https://doi.org/10.4025/actascianimsci.v45i1.61721","url":null,"abstract":"Analyzing the organochlorine pesticide (OCP) content in milk is relevantbecause it helps evaluate the quality of milk that reaches the consumer's table and also helps identify the geographical areas where there is a high possibility of contamination. Accordingly,thispilot project was aimed at determining the extent of contamination by OCP residues and their metabolites in fresh cow's milk in Mojuí dos Campos and Belterra, Pará, using solid-phase extraction (SPE) and gas chromatography coupled with electron capture detection (GC-ECD). The OCPs evaluated in this study weredichlorodiphenyltrichloroethane (DDT) and its metabolites (dichlorodiphenyldichloroethylene (DDE) and dichlorodiphenyldichloroethane (DDD)), hexachlorocyclohexane (HCH) (α, β, γ, and δ), endosulfanα and β, andendosulfansulfate. None of the thirty bovine milk samples analyzedshowed any contamination with OCPs.TheOCP content was within the limit of quantification of the method. The results of this study add to the existing knowledge on the quality ofbovine milk produced in these locations. However, further researchon other environmental matricesis required to confirm the results obtained in this study.","PeriodicalId":7149,"journal":{"name":"Acta Scientiarum. Animal Sciences","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136337949","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}
An experiment was conducted to investigate the effects of graded levels of concentrate on feed intake, biological performance and carcass characteristics of yearling Gumuz sheep. The sheep were purchased and treated against endo- and ecto- parasites before commencing the study. The experimental animals were offered natural grass hay as a basal ration. The experimental design was a Randomized Complete Block Design (RCBD) with six replications. Treatment feeds were arranged in the same amount of wheat bran but in different levels of sesame seed cake which comprises: 150 g wheat bran + 0 g sesame seed cake DM day-1 (T1), 150 g wheat bran + 250 g sesame seed cake DM day-1 (T2), 150 g wheat bran + 350 g sesame seed cake DM day-1 (T3) and 150 g wheat bran + 450 g sesame seed cake DM day-1 (T4). The experiment was conducted for 90 days after 15 days of adaptation period to the experimental feeds and conditions, which were then followed by carcass evaluation at the end. Sheep in T2 and T4 achieved higher total DM intake (1004.03-1072.57 g day-1) than T1 and T3. Sheep fed on graded-level sesame cake supplements (T2, T3 and T4) recorded significantly higher average daily gain (ADG) than the control (T1) and resulted in higher feed conversion efficiency (FCE). As a result of better slaughter weight (SW) achieved significant hot carcass weight (HCW) was recorded in sheep at T3 and T4. Among the concentrate levels, T2, T3 and T4 were found optimum in improving carcass yield and major meat quality attributes. Sheep supplemented with T3 had the highest net return (26.66 USD) and highest marginal rate of revenue (MRR) (6.53) compared to the other high-level sesame cake-supplemented groups. Thus, it is recommended that the supplementation of hay with high-level sesame cake supplement (T3) is biologically efficient and potentially profitable in the feeding of growing Gumuz sheep.
本试验旨在研究精料分级水平对古木兹羊采食量、生物生产性能和胴体性状的影响。在开始研究之前，这些羊被购买并进行了体内和体外寄生虫的治疗。试验动物以天然干草为基础日粮。实验设计为随机完全区组设计(RCBD)， 6个重复。饲喂等量麦麸、不同水平的芝麻饼，分别为:150 g麦麸+ 0 g芝麻饼DM d -1 (T1)、150 g麦麸+ 250 g芝麻饼DM d -1 (T2)、150 g麦麸+ 350 g芝麻饼DM d -1 (T3)和150 g麦麸+ 450 g芝麻饼DM d -1 (T4)。对试验饲料和试验条件进行15 d的适应期后，进行90 d的试验，最后进行胴体评价。T2和T4组的绵羊DM总采食量(1004.03 ~ 1072.57 g d -1)高于T1和T3组。饲喂等级芝麻饼添加物(T2、T3和T4)的绵羊平均日增重(ADG)显著高于对照组(T1)，饲料转化率(FCE)显著提高。由于较好的屠宰重(SW)，在T3和T4阶段记录了显著的热胴体重(HCW)。在精料水平中，T2、T3和T4在提高胴体产量和主要肉质性状方面效果最佳。与其他高水平芝麻饼添加组相比，添加T3的绵羊净收益最高(26.66美元)，边际收益率(MRR)最高(6.53)。由此可见，饲粮中添加高水平芝麻饼添加剂(T3)具有较高的生物效益和潜在的经济效益。
{"title":"Biological performance and carcass yield of yearling Gumuz sheep under graded level concentrate supplementation in Ethiopia","authors":"Alemu Tarekegn, Kifetew Adane, Desalegn Amsalu, Yohanes Wolelaw, Ewnetu Tarekegn","doi":"10.4025/actascianimsci.v45i1.61428","DOIUrl":"https://doi.org/10.4025/actascianimsci.v45i1.61428","url":null,"abstract":"An experiment was conducted to investigate the effects of graded levels of concentrate on feed intake, biological performance and carcass characteristics of yearling Gumuz sheep. The sheep were purchased and treated against endo- and ecto- parasites before commencing the study. The experimental animals were offered natural grass hay as a basal ration. The experimental design was a Randomized Complete Block Design (RCBD) with six replications. Treatment feeds were arranged in the same amount of wheat bran but in different levels of sesame seed cake which comprises: 150 g wheat bran + 0 g sesame seed cake DM day-1 (T1), 150 g wheat bran + 250 g sesame seed cake DM day-1 (T2), 150 g wheat bran + 350 g sesame seed cake DM day-1 (T3) and 150 g wheat bran + 450 g sesame seed cake DM day-1 (T4). The experiment was conducted for 90 days after 15 days of adaptation period to the experimental feeds and conditions, which were then followed by carcass evaluation at the end. Sheep in T2 and T4 achieved higher total DM intake (1004.03-1072.57 g day-1) than T1 and T3. Sheep fed on graded-level sesame cake supplements (T2, T3 and T4) recorded significantly higher average daily gain (ADG) than the control (T1) and resulted in higher feed conversion efficiency (FCE). As a result of better slaughter weight (SW) achieved significant hot carcass weight (HCW) was recorded in sheep at T3 and T4. Among the concentrate levels, T2, T3 and T4 were found optimum in improving carcass yield and major meat quality attributes. Sheep supplemented with T3 had the highest net return (26.66 USD) and highest marginal rate of revenue (MRR) (6.53) compared to the other high-level sesame cake-supplemented groups. Thus, it is recommended that the supplementation of hay with high-level sesame cake supplement (T3) is biologically efficient and potentially profitable in the feeding of growing Gumuz sheep.","PeriodicalId":7149,"journal":{"name":"Acta Scientiarum. Animal Sciences","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136337948","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}
Pub Date : 2023-08-17DOI: 10.4025/actascianimsci.v45i1.61884
Antônio Fábio Lopes de Souza, Antonio José Inhamuns da Silva, Alexandre Augusto Barai, João Paulo Ferreira Rufino, Tiago Viana da Costa
For decades, researches were developed about the diversity of fishes in the Amazon basin and their consumption by the people. In this context, an important gap identified was a lack of information about the nutritional composition of some of the main Amazon fish species consumed and traded. Front this, the objective of this study was to evaluate the chemical composition and mineral content of filets from 10 fish species with the highest landing volume in Amazonas State. The fish species selected were curimatã, jaraqui, mapará, matrinxã, pacu, piramutaba, sardinha, surubim, tambaqui and tucunaré. Were collected 20 samples (fishes) from each species according to the hydrological cycles of the region (20 samples in the flood and 20 samples in drought). Ten fish samples were processed to determine the proximal composition and 10 fish samples were used to determine mineral content (macro and micro minerals). The proximal composition of fish species analysed varied widely between species and seasons, with an emphasis on moisture and lipid content. Fishes in the flood season presented higher content of nutrients than drought season. This result also was observed in the minerals profile, where fishes in the flood season presented the highest (p < 0.05) minerals content.
{"title":"Proximal and mineral composition of native fish species from Amazonas, Brazil","authors":"Antônio Fábio Lopes de Souza, Antonio José Inhamuns da Silva, Alexandre Augusto Barai, João Paulo Ferreira Rufino, Tiago Viana da Costa","doi":"10.4025/actascianimsci.v45i1.61884","DOIUrl":"https://doi.org/10.4025/actascianimsci.v45i1.61884","url":null,"abstract":"For decades, researches were developed about the diversity of fishes in the Amazon basin and their consumption by the people. In this context, an important gap identified was a lack of information about the nutritional composition of some of the main Amazon fish species consumed and traded. Front this, the objective of this study was to evaluate the chemical composition and mineral content of filets from 10 fish species with the highest landing volume in Amazonas State. The fish species selected were curimatã, jaraqui, mapará, matrinxã, pacu, piramutaba, sardinha, surubim, tambaqui and tucunaré. Were collected 20 samples (fishes) from each species according to the hydrological cycles of the region (20 samples in the flood and 20 samples in drought). Ten fish samples were processed to determine the proximal composition and 10 fish samples were used to determine mineral content (macro and micro minerals). The proximal composition of fish species analysed varied widely between species and seasons, with an emphasis on moisture and lipid content. Fishes in the flood season presented higher content of nutrients than drought season. This result also was observed in the minerals profile, where fishes in the flood season presented the highest (p < 0.05) minerals content.","PeriodicalId":7149,"journal":{"name":"Acta Scientiarum. Animal Sciences","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136337952","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}
Pub Date : 2023-08-17DOI: 10.4025/actascianimsci.v45i1.61295
Marcos Vinícius da Silva, Gledson Luiz Pontes de Almeida, Héliton Pandorfi, Alex Souza Moraes, Gleidiana Amélia Pontes de Almeida Macêdo, Maria Eduarda Gonçalves de Oliveira, Maria Vitória Neves de Melo, Taize Calvacante Santana
The objective of this research was to identify the influence of the evaporative adiabatic cooling system (EACS) on the thermal comfort and productive responses of dairy cattle, through multivariate analysis by principal components (PC), in the summer and winter seasons of the semiarid region of Pernambuco, Brazil. The data came from an experiment that included 16 multiparous lactating cows (7/8 Holstein-Gyr), randomly distributed in 4 sets, with 4 experimental phases and 4 treatments (0, 10, 20, and 30 min.). The multivariate analysis was carried out through PC for the thermal comfort indices, physiological variables, and milk production and composition. The highest milk production in the summer season was obtained for animals exposed to the cooling system for 30 min. In the winter season in the morning period, the use of the EACS for 10 min. was sufficient for improvements in milk production. The times of exposure to EACS caused changes in the composition of milk, for both seasons. Principal component analysis made it possible to verify a positive correlation of evaporative cooling with thermal comfort, physiological responses, and production and composition of milk of lactating cows.
{"title":"Thermal comfort and productive responses of 7/8 holstein-gyr cows subjected to cooling system","authors":"Marcos Vinícius da Silva, Gledson Luiz Pontes de Almeida, Héliton Pandorfi, Alex Souza Moraes, Gleidiana Amélia Pontes de Almeida Macêdo, Maria Eduarda Gonçalves de Oliveira, Maria Vitória Neves de Melo, Taize Calvacante Santana","doi":"10.4025/actascianimsci.v45i1.61295","DOIUrl":"https://doi.org/10.4025/actascianimsci.v45i1.61295","url":null,"abstract":"The objective of this research was to identify the influence of the evaporative adiabatic cooling system (EACS) on the thermal comfort and productive responses of dairy cattle, through multivariate analysis by principal components (PC), in the summer and winter seasons of the semiarid region of Pernambuco, Brazil. The data came from an experiment that included 16 multiparous lactating cows (7/8 Holstein-Gyr), randomly distributed in 4 sets, with 4 experimental phases and 4 treatments (0, 10, 20, and 30 min.). The multivariate analysis was carried out through PC for the thermal comfort indices, physiological variables, and milk production and composition. The highest milk production in the summer season was obtained for animals exposed to the cooling system for 30 min. In the winter season in the morning period, the use of the EACS for 10 min. was sufficient for improvements in milk production. The times of exposure to EACS caused changes in the composition of milk, for both seasons. Principal component analysis made it possible to verify a positive correlation of evaporative cooling with thermal comfort, physiological responses, and production and composition of milk of lactating cows.","PeriodicalId":7149,"journal":{"name":"Acta Scientiarum. Animal Sciences","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136337950","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}
Pub Date : 2023-08-17DOI: 10.4025/actascianimsci.v45i1.61547
José Claudio Bezerra Muniz Junior, Suzana Linhares Haidamus, Noédson de Jesus Beltrão Machado, Felipe Dilelis, Ronner Joaquim Mendonça Brasil, Débora Vaccari Quaresma, Cristina Amorim Ribeiro de Lima
The present study was carried out with the objective of determining the requirements for digestible lysine in Nile tilapia during the 500 to 600 g live weight stage. Isocaloric and isonitrogenous diets were tested with increasing amounts of digestible lysine. L-lysine HCl (78%) were used to replace glutamic acid at increasing levels, resulting in treatments of 9.3, 12.3, 15.3, 18.3 and 21.3 g kg-1 of digestible lysine. Three hundred Nile tilapias with an average weight of 519 ± 27.23 g were used and distributed among 25 tanks. The physical and chemical parameters of the water were pH, dissolved oxygen, salinity, conductivity and temperature. The mortality rate was registered daily. Two slaughters were performed at 28 and 50 days after the beginning of the experiment. It was estimated that an amount of 13.1 g kg-1 of digestible lysine was ideal for obtaining higher WG. Fish slaughtered after 50 days, the digestible lysine requirements were determined to be 14.5 g kg-1 for the lowest carcass humidity and 14.6 g kg-1 for the greatest carcass ethereal extract. Nile tilapias with live weight between 500 and 600 grams require 13.1 g kg-1 of digestible lysine in the diet for greater WG (90.53 g) and better FCR (2.55).
本研究旨在确定尼罗罗非鱼在500 ~ 600 g活重阶段对可消化赖氨酸的需用量。在等热量和等氮饲粮中增加可消化赖氨酸。以78%的l -赖氨酸HCl代替谷氨酸，处理的可消化赖氨酸分别为9.3、12.3、15.3、18.3和21.3 g kg-1。选取尼罗罗非鱼300尾，平均体重519±27.23 g，分布在25个鱼缸中。水的理化参数为pH、溶解氧、盐度、电导率和温度。每天登记死亡率。试验开始后第28天和第50天分别进行两次屠宰。据估计，13.1 g kg-1的可消化赖氨酸是获得较高WG的理想量。50 d后屠宰的鱼，可消化赖氨酸需用量为胴体湿度最低时为14.5 g kg-1，胴体空灵提取物最高时为14.6 g kg-1。活重在500 - 600克之间的尼罗罗非鱼需要13.1 g kg-1的可消化赖氨酸，以获得更高的增重(90.53 g)和更好的饲料效率(2.55)。
{"title":"Requirement for digestible lysine in Nile tilapias (Oreochromis niloticus) with live weight between 500 and 600 g","authors":"José Claudio Bezerra Muniz Junior, Suzana Linhares Haidamus, Noédson de Jesus Beltrão Machado, Felipe Dilelis, Ronner Joaquim Mendonça Brasil, Débora Vaccari Quaresma, Cristina Amorim Ribeiro de Lima","doi":"10.4025/actascianimsci.v45i1.61547","DOIUrl":"https://doi.org/10.4025/actascianimsci.v45i1.61547","url":null,"abstract":"The present study was carried out with the objective of determining the requirements for digestible lysine in Nile tilapia during the 500 to 600 g live weight stage. Isocaloric and isonitrogenous diets were tested with increasing amounts of digestible lysine. L-lysine HCl (78%) were used to replace glutamic acid at increasing levels, resulting in treatments of 9.3, 12.3, 15.3, 18.3 and 21.3 g kg-1 of digestible lysine. Three hundred Nile tilapias with an average weight of 519 ± 27.23 g were used and distributed among 25 tanks. The physical and chemical parameters of the water were pH, dissolved oxygen, salinity, conductivity and temperature. The mortality rate was registered daily. Two slaughters were performed at 28 and 50 days after the beginning of the experiment. It was estimated that an amount of 13.1 g kg-1 of digestible lysine was ideal for obtaining higher WG. Fish slaughtered after 50 days, the digestible lysine requirements were determined to be 14.5 g kg-1 for the lowest carcass humidity and 14.6 g kg-1 for the greatest carcass ethereal extract. Nile tilapias with live weight between 500 and 600 grams require 13.1 g kg-1 of digestible lysine in the diet for greater WG (90.53 g) and better FCR (2.55).","PeriodicalId":7149,"journal":{"name":"Acta Scientiarum. Animal Sciences","volume":"323 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136337953","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}
The study aimed to determine the fatty acid profile, omegas and lipid quality indeces in commercial cuts of pirarucu (Arapaima gigas) of the slaughter class 11.1 to 14.0 kg. Sample collections were carried out in two fish processing industries located in Rondônia state, Brazil. The experimental design was completely randomized, with processing performed in triplicate. Data were submitted to ANOVA to assess differences between commercial cuts in chemical compositions. If ANOVA appeared statistically significant (α=0.05), the averages were compared by Tukey's test. In the composition of fatty acids, there was a difference (p <0.05) between cuts. Commercial cuts that expressed the highest percentages of SFAs tail fillet 51.2%, of MUFAs fillet mignon 39.8% and of PUFAs deboned cut 20.7%. The indeces prescribed for lipid quality, ∑PUFAs/∑SFAs, ∑PUFAs (n-6/∑n-3), AI, TI and HH, indicate that commercial cuts have lipid quality. Deboned is the cut with the highest PUFA fatty acid content, with the highest values of Omega 3, 6, 7 and n-9 being also expressed. Nutritional information is important for the processes of conservation and processing, development of new products on the market, as well as guiding the form of preparation, thus providing commercial security for different market niches.
{"title":"Fatty acid profile, omegas and lipid quality in commercial cuts of pirarucu (Arapaima gigas Schinz, 1822) cultivated in excavated tanks","authors":"Jucilene Cavali, Jerônimo Vieira Dantas Filho, Carla Taveira Nunes, Elvino Ferreira, Rute Bianchini Pontuschka, Renato Zanella, Maria Luiza Rodrigues de Souza","doi":"10.4025/actascianimsci.v45i1.61186","DOIUrl":"https://doi.org/10.4025/actascianimsci.v45i1.61186","url":null,"abstract":"The study aimed to determine the fatty acid profile, omegas and lipid quality indeces in commercial cuts of pirarucu (Arapaima gigas) of the slaughter class 11.1 to 14.0 kg. Sample collections were carried out in two fish processing industries located in Rondônia state, Brazil. The experimental design was completely randomized, with processing performed in triplicate. Data were submitted to ANOVA to assess differences between commercial cuts in chemical compositions. If ANOVA appeared statistically significant (α=0.05), the averages were compared by Tukey's test. In the composition of fatty acids, there was a difference (p <0.05) between cuts. Commercial cuts that expressed the highest percentages of SFAs tail fillet 51.2%, of MUFAs fillet mignon 39.8% and of PUFAs deboned cut 20.7%. The indeces prescribed for lipid quality, ∑PUFAs/∑SFAs, ∑PUFAs (n-6/∑n-3), AI, TI and HH, indicate that commercial cuts have lipid quality. Deboned is the cut with the highest PUFA fatty acid content, with the highest values of Omega 3, 6, 7 and n-9 being also expressed. Nutritional information is important for the processes of conservation and processing, development of new products on the market, as well as guiding the form of preparation, thus providing commercial security for different market niches.","PeriodicalId":7149,"journal":{"name":"Acta Scientiarum. Animal Sciences","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135492241","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}
Pub Date : 2023-08-11DOI: 10.4025/actascianimsci.v45i1.61209
Bruna Barreto Przybulinski, Rodrigo Garófallo Garcia, Maria Fernanda de Castro Burbarelli, Sarah Sgavioli, Jean Kaique Valentim, Felipe Cardoso Serpa
The objective is to evaluate the effects of the inclusion of yerba mate in the diet on the yield and quality of chicken meat stored frozen for 120 days after slaughter. The birds were distributed in a completely randomized design, with four treatments, and eight replications with 25 birds each. The treatments consisted of providing a basal diet with 1, 2, 4, and 6 g kg-1 of ground dehydrated Yerba mate. At slaughter, temperature, pH, and carcass yield were measured. 120 days after meat freezing, measurements of pH, colorimetry, cooking weight loss (CWL), shear force, and water retention capacity were estimated. The parameters evaluated after slaughter showed regression effects on breast and drumstick temperature. Breast temperature showed a decreasing linear effect (R2=0.61). For the variable thigh temperature, there was a negative quadratic effect (R2=0.66). The quality characteristics of breast and drumstick evaluated 120 days after freezing showed an increasing linear effect of drumstick CWL (R2=0.38). Yerba mate can be included in up to 6 g kg-1 in chicken feed without changing pH, color, and meat tenderness after 120 days of freezing, maintaining carcass and cut yields.
目的是评价日粮中添加马黛茶对屠宰后冷冻120天鸡肉产量和质量的影响。这些鸟以完全随机的设计分布，有4个处理，8个重复，每个重复25只鸟。在基础饲粮中分别添加1、2、4和6 g kg-1的脱水马黛茶粉。屠宰时，测量温度、pH值和胴体产量。冷冻后120天，对肉的pH值、比色法、蒸煮失重(CWL)、剪切力和保水能力进行评估。屠宰后评估的参数对胸部和鸡腿温度有回归效应。乳房温度呈递减的线性效应(R2=0.61)。对于变化的大腿温度，存在负二次效应(R2=0.66)。冷冻后120天对鸡腿和鸡胸的品质特征进行评价，鸡腿CWL呈线性增加的趋势(R2=0.38)。马黛茶可以包含在鸡饲料中高达6g kg-1，在冷冻120天后不改变pH值，颜色和肉的嫩度，保持胴体和切割产量。
{"title":"Effects on meat quality of Yerba mate (Ilex paraguariensis) in the diet of chickens","authors":"Bruna Barreto Przybulinski, Rodrigo Garófallo Garcia, Maria Fernanda de Castro Burbarelli, Sarah Sgavioli, Jean Kaique Valentim, Felipe Cardoso Serpa","doi":"10.4025/actascianimsci.v45i1.61209","DOIUrl":"https://doi.org/10.4025/actascianimsci.v45i1.61209","url":null,"abstract":"The objective is to evaluate the effects of the inclusion of yerba mate in the diet on the yield and quality of chicken meat stored frozen for 120 days after slaughter. The birds were distributed in a completely randomized design, with four treatments, and eight replications with 25 birds each. The treatments consisted of providing a basal diet with 1, 2, 4, and 6 g kg-1 of ground dehydrated Yerba mate. At slaughter, temperature, pH, and carcass yield were measured. 120 days after meat freezing, measurements of pH, colorimetry, cooking weight loss (CWL), shear force, and water retention capacity were estimated. The parameters evaluated after slaughter showed regression effects on breast and drumstick temperature. Breast temperature showed a decreasing linear effect (R2=0.61). For the variable thigh temperature, there was a negative quadratic effect (R2=0.66). The quality characteristics of breast and drumstick evaluated 120 days after freezing showed an increasing linear effect of drumstick CWL (R2=0.38). Yerba mate can be included in up to 6 g kg-1 in chicken feed without changing pH, color, and meat tenderness after 120 days of freezing, maintaining carcass and cut yields.","PeriodicalId":7149,"journal":{"name":"Acta Scientiarum. Animal Sciences","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135492240","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}
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