Revista Brasileira de Saude e Producao Animal最新文献_第8页

Bromatological quality of silage from cassava residues: fractionation of proteins and carbohydrates 木薯渣青贮饲料的色谱品质:蛋白质和碳水化合物的分馏

Revista Brasileira de Saude e Producao Animal Pub Date : 2020-01-01 DOI: 10.1590/s1519-99402121302020

L. Santos, W. G. D. Nascimento, M. M. R. Azevedo, Dulciene Karla de Andrade Silva, Italvan Milfont Macedo, G. Soares

{"title":"Bromatological quality of silage from cassava residues: fractionation of proteins and carbohydrates","authors":"L. Santos, W. G. D. Nascimento, M. M. R. Azevedo, Dulciene Karla de Andrade Silva, Italvan Milfont Macedo, G. Soares","doi":"10.1590/s1519-99402121302020","DOIUrl":"https://doi.org/10.1590/s1519-99402121302020","url":null,"abstract":"ABSTRACT The objective of this study was to evaluate the quality of silage in the upper third of cassava levels of inclusion of cassava peel, 0, 100, 200, 300, 400 g/kg out based on natural matter (NM) with 60 days of storage on fermentative profile, aerobic stability, chemical composition and protein and carbohydrate fractionation. The material was ensiled in 15 experimental silos, the experimental design adopted was completely randomised, with five treatments and three repetitions. The inclusion of cassava peel in silage from the aerial part of the cassava promoted an increasing linear effect for dry matter content. The contents of crude protein, neutral detergent fibre and acid detergent fibre decreased linearly (P < 0.05) with the inclusion of cassava peel in the silage. The inclusion of the bark promoted an increase in carbohydrate levels. Protein and carbohydrate fractions were influenced by the addition of cassava peel, decreasing the unavailable and/or indigestible fraction (Fraction C) of proteins and carbohydrates. The inclusion of cassava peel up to the level of 400 g/kg NM in silage from the aerial part of the cassava improves the fermentation process, aerobic stability and the chemical composition of the silage, and reduces the indigestible fractions of carbohydrates and proteins.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67532285","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: 1

Quality of meat from Santa Ines sheep with different biotypes and slaughtering weights 不同生物型和屠宰重量的圣伊内斯羊的肉质

Revista Brasileira de Saude e Producao Animal Pub Date : 2020-01-01 DOI: 10.1590/s1519-994020210732020

Flávio Gomes Oliveira, W. H. D. Sousa, F. Q. Cartaxo, A. Batista, J. Ramos, I. Cavalcante

{"title":"Quality of meat from Santa Ines sheep with different biotypes and slaughtering weights","authors":"Flávio Gomes Oliveira, W. H. D. Sousa, F. Q. Cartaxo, A. Batista, J. Ramos, I. Cavalcante","doi":"10.1590/s1519-994020210732020","DOIUrl":"https://doi.org/10.1590/s1519-994020210732020","url":null,"abstract":"ABSTRACT The Santa Inês breed is of great importance for the lamb production chain in Brazil. The adaptive and reproductive characteristics of this breed favor its use in future breeding programs for the production of sheep for slaughter in northeastern Brazil. This study evaluated the carcass characteristics, physical parameters, chemical composition and determination of the fatty acid profile of the lambs of the traditional and modern biotypes, slaughtered at 32 kg and 34 kg. Thirty-six Santa Inês lambs were used, with an average age of 180 days and initial weight of 16 kg in a completely randomized design, with a faecal spruce 2x2 (two biotypes and two slaughtering weights). The data were submitted to analysis of variance and averages were compared by the test F α = 0.05 using SAS GLM, (2011) - Statistical Analysis System, version 9.3.Biotypes and slaughter weight did not influence the physical parameters and the fatty acid profile of the meat. Centesimal composition of meat was influenced by treatments, with the larger contents of meat moisture for the traditional biotype slaughtered at 32 kg, and higher content of ash, protein and fat present in the meat for the modern biotype slaughtered at 34 kg. Santa Inês animals that if frame Modern biotype presents potential for meat production with high nutritional value, due to higher protein content, low fat content and satisfactory amount of oleic, palmitic, stearic, linoleic fatty acids, as well as a great relationship between polyunsaturated acids and saturated.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67524757","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: 6

Replacing corn with ground or pelleted citrus pulp in diets of Nellore heifers 内洛尔小母牛日粮中用磨碎或粉碎的柑橘果肉代替玉米

Revista Brasileira de Saude e Producao Animal Pub Date : 2020-01-01 DOI: 10.1590/s1519-9940210262020

R. T. Sousa, N. Cônsolo, V. Ferrari, J. Marques, J. D. Magalhães, L. F. P. Silva

{"title":"Replacing corn with ground or pelleted citrus pulp in diets of Nellore heifers","authors":"R. T. Sousa, N. Cônsolo, V. Ferrari, J. Marques, J. D. Magalhães, L. F. P. Silva","doi":"10.1590/s1519-9940210262020","DOIUrl":"https://doi.org/10.1590/s1519-9940210262020","url":null,"abstract":"SUMMARY Citrus pulp can replace corn in feedlot diets in order to decrease metabolic problems by reducing formation of lactate ruminal. However, while eating, animals can easily select against pelleted citrus pulp due to the greater particle size of the pellet. Therefore, grinding citrus pulp pellet can be an alternative to decrease particle selectivity. This study was realized to evaluate the replacement of ground corn by pelleted citrus pulp and ground citrus pulp on animal performance, sorting index, and feeding behavior of Nellore heifers. Thirty-six Nellore heifers were randomly assigned to three treatments: control diet based on ground corn (GC), partial replacement of GC by ground citrus pulp (GCP), and partial replacement of GC by pelleted citrus pulp (PCP). . Heifers fed with the GC diet had higher final body weight (BW), average daily gain (ADG), and dry matter intake (DMI) compared with heifers fed with citrus pulp (P < 0.05). Ground citrus pulp increased DMI and fiber intake compared with the PCP group (P < 0.05). Heifers fed with PCP and GCP sorted for diet particles from 8 to 19 mm and selected particles with less than 1.18 mm (P < 0.05). Thus, the ground citrus pulp is better than pelleted citrus pulp due to higher feed intake and ADG, in consequence of lower selection index.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67529723","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

Gastrointestinal nematode infection in Purunã heifers raised in conventional and integrated livestock forest systems 在传统和综合畜牧业森林系统中饲养的Purunã小母牛的胃肠道线虫感染

Revista Brasileira de Saude e Producao Animal Pub Date : 2020-01-01 DOI: 10.1590/s1519-99402121152020

Barbara Haline Buss Baiak, J. M. Gasparina, J. L. Moletta, R. A. Rocha

{"title":"Gastrointestinal nematode infection in Purunã heifers raised in conventional and integrated livestock forest systems","authors":"Barbara Haline Buss Baiak, J. M. Gasparina, J. L. Moletta, R. A. Rocha","doi":"10.1590/s1519-99402121152020","DOIUrl":"https://doi.org/10.1590/s1519-99402121152020","url":null,"abstract":"ABSTRACT The objective of the study was to evaluate the resistance of Purunã heifers to nematode infection in two different production systems. In this study, 29 heifers were divided into eight pickets, four in an integrated livestock forest system (ILF) and four in a conventional pasture system (CPS). Feces were collected monthly to perform the fecal egg count (FEC), evaluate the degree of infection caused by gastrointestinal nematodes in cattle, and carry out coproculture, to identify the genus of the parasites. In addition, animal body weight was determined to evaluate performance. On the same day as the measurements, forage samples were collected to determine the number of infective larvae per kilogram of dry matter (L3/kg DM) in each picket. There were no statistical differences in FECs between the treatments. Although no significant differences were observed in the recovery of L3/kg DM, the contamination was higher in the ILF compared to CPS in December (344 and 37.7 L3/kg DM, respectively) and January (312 and 0 L3/kg DM, respectively). In March, the CPS (321 L3/kg DM) presented higher contamination than the ILF (80.7 L3/kg DM), but with no statistical difference. The weight of the animals was higher for the CPS compared to the ILF treatment throughout the whole experimental period, with a significant difference in December (343.30 kg and 314.08 kg, respectively). The present study demonstrated numerically that greater numbers of L3 were recovered from pasture of the ILF, which could have resulted in higher contamination and lower performance of the animals.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67531865","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

The economic viability of L-arginine supplementation in diets for sows in the lactation phase 泌乳期母猪饲粮中添加l -精氨酸的经济可行性

Revista Brasileira de Saude e Producao Animal Pub Date : 2020-01-01 DOI: 10.1590/s1519-9940210412020

Débora Virginia Ribeiro, L. S. Fonseca, R. Moreira, Caio Peixoto Chain, M. Abreu, F. Dalólio, Altamir Fernandes Oliveira, C. Garbossa

{"title":"The economic viability of L-arginine supplementation in diets for sows in the lactation phase","authors":"Débora Virginia Ribeiro, L. S. Fonseca, R. Moreira, Caio Peixoto Chain, M. Abreu, F. Dalólio, Altamir Fernandes Oliveira, C. Garbossa","doi":"10.1590/s1519-9940210412020","DOIUrl":"https://doi.org/10.1590/s1519-9940210412020","url":null,"abstract":"ABSTRACT The objective of this study was to evaluate the economic viability of L-arginine supplementation in diets for sows during the lactation phase. A descriptive case study was carried out to identify the economic viability of the supplementation of L-arginine in the lactation ration, in relation to the control diet, on the productive performance of hyper prolific sows and their litters. The study was carried out on a commercial farm located in the state of Minas Gerais. It analyzed feasibility criteria such as the marginal physical product (MPPg) and gross margin (GM) in the scenario of technical and economic efficiency, which were compared to the GM in the control group. Technical efficiency was established at 0.71% of L-arginine in daily feed intake according to previous fieldwork by the authors, while economic efficiency obtained in this study was 0.43% supplementation. The relationship between the L-arginine price and the sale price of the piglets directly determined the economic viability, compared to the control group. Thus, initially considering the price of a piglet as R$ 9.76/kg, the cost of L-arginine should not exceed 6.61 times this value; that is, it is estimated at up to R$ 64.50. Therefore, at the final price of L-arginine of R$ 54.88, a piglet should be sold at a price of R$ 8.30/kg to make the supplementation of L-arginine in the diet of lactation-phase swine economically possible.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67531901","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: 1

Supplementation of growing bulls grazing Panicum maximum cv. Coloniao increases average daily gain and does not impact subsequent performance in feedlot phase 生长公牛放牧大头草的补充。殖民地可提高饲期平均日增重，对后期生产性能无影响

Revista Brasileira de Saude e Producao Animal Pub Date : 2020-01-01 DOI: 10.1590/s1519-99402121202020

Térssio Roger Ramalho, D. F. Costa, S. C. Silva, R. C. Goulart, Guilhermo Francklin Souza Congio, F. Santos

{"title":"Supplementation of growing bulls grazing Panicum maximum cv. Coloniao increases average daily gain and does not impact subsequent performance in feedlot phase","authors":"Térssio Roger Ramalho, D. F. Costa, S. C. Silva, R. C. Goulart, Guilhermo Francklin Souza Congio, F. Santos","doi":"10.1590/s1519-99402121202020","DOIUrl":"https://doi.org/10.1590/s1519-99402121202020","url":null,"abstract":"ABSTRACT To evaluate the influence of supplementation strategies on the average daily gain (ADG) of cattle in a rotational grazing system of Guinea grass (Panicum maximum cv. Coloniao) pastures during the rainy season. It was further evaluated the residual effects in the feedlot finishing phase. Seventy-five 8 month-old crossbred bull calves averaging 200.1 ± 2.5 kg of body weight (BW) were stratified and grouped in three into 25 blocks according to BW, and then randomly assigned to one of three supplementation treatments: control (no supplement), energy supplement [65 g crude protein (CP)/kg dry matter (DM)] or protein supplement (200 g CP/kg DM) both fed as 6 g/kg BW. All animals composed a single herd and were separated daily according to treatment groups for supplementation. After the grazing phase, all animals were moved to a feedlot and received the same diet up until slaughter. Guinea grass was subjected to rotational stocking with pre- and post-grazing heights of 76 and 43 cm, respectively. Energy and protein supplements provided similar ADG (P > 0.05; 0.94 kg/day) which was greater than for non-supplemented animals during the grazing phase (P ≤ 0.05; 0.74 kg/day), but there was no difference in the subsequent feedlot phase (P > 0.05; 1.45 kg/day). The protein supplement had no incremental effects over the energy supplement on ADG and carcass traits of growing crossbreed bulls during the grazing phase, indicating that either source could be used, and that an energy supplement would lead to more efficient nutrient use coming from the grass.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67532399","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

Dietary garlic essential oil on development parameters of severum post-larvae 饲粮大蒜精油对severum幼虫发育参数的影响

Revista Brasileira de Saude e Producao Animal Pub Date : 2020-01-01 DOI: 10.1590/s1519-99402121252020

D. A. Campelo, I. Gonçalves, I. E. Silva, L. B. de Moura, M. F. Brabo, L. Barbas, G. C. Veras

{"title":"Dietary garlic essential oil on development parameters of severum post-larvae","authors":"D. A. Campelo, I. Gonçalves, I. E. Silva, L. B. de Moura, M. F. Brabo, L. Barbas, G. C. Veras","doi":"10.1590/s1519-99402121252020","DOIUrl":"https://doi.org/10.1590/s1519-99402121252020","url":null,"abstract":"ABSTRACT The present study aimed to evaluate the influence of garlic essential oil (GEO) on the growth performance and morphometric variables of severum (Heros severus) post-larvae. A growth trial was performed using 150 severum post-larvae (1.6 ± 0.03 mg and 5.58 ± 0.1 mm), distributed in fifteen 1-L aquaria, with constant aeration. The fish were essayed in a completely randomized design with five treatments, using diets containing graded levels of GEO (0.00, 0.05, 0.50, 1.00 and 1.50 g kg-1) and three replicates. The diets were offered four times a day, until apparent satiation, for 30 days. At the end of the experiment, the fish were counted, weighed and measured, to evaluate growth performance and morphometric variables. Increased diet levels of GEO resulted in a linear reduction in growth performance parameters, except for the survival rate, weight and length uniformity of the batch, and morphometric variables which did not present significant differences. Elevated concentrations of dietary GEO may be detrimental to larvae and post-larvae of fish, which could be more sensitive to the potential damage that high concentrations of this essential oil may cause. Therefore, the inclusion of GEO in levels above 0.05 g kg-1 in diets for severum post-larvae is not recommended.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67532423","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: 2

Growth indexes of Pennisetum purpureum cv. Roxo cultivated in different seasons under rainfed conditions 紫荆狼尾草的生长指标。Roxo在不同的季节在雨养条件下种植

Revista Brasileira de Saude e Producao Animal Pub Date : 2020-01-01 DOI: 10.1590/s1519-9940210122020

T. D. Maranhão, M. N. Lopes, F. G. D. S. Alves, R. F. Silva, R. Pompeu, W. N. Sousa, Gabriela Florencio Lacerda, M. Cândido

{"title":"Growth indexes of Pennisetum purpureum cv. Roxo cultivated in different seasons under rainfed conditions","authors":"T. D. Maranhão, M. N. Lopes, F. G. D. S. Alves, R. F. Silva, R. Pompeu, W. N. Sousa, Gabriela Florencio Lacerda, M. Cândido","doi":"10.1590/s1519-9940210122020","DOIUrl":"https://doi.org/10.1590/s1519-9940210122020","url":null,"abstract":"ABSTRACT The objective was to estimate the growth indexes of elephant grass cv. Roxo managed under rainfed conditions in different growing seasons. Seven growth ages (9, 18, 27, 36, 45, 54, and 63 days) were evaluated in three growing seasons (rainy, transition and dry). A completely randomised design was adopted, with split-plot arrangement with time repeated measures, with the ages being the plots and the seasons the subplots. Interaction of age x season was observed. The specific leaf area mean was 0.0286 ± 0.0039 during the rainy season. In the transition season, it adjusted to a third-degree polynomial model; in the dry season it declined linearly (0.0003 m2 g-1). The leaf weight ratio adjusted to the third-degree polynomial model in the rainy and dry seasons, and in the transition season it was maximised at 28 DAC (0.694 g g-1). The leaf area ratio continuously declined in the rainy season. In the transition and dry seasons, it adjusted to the third-degree polynomial model. The net assimilation rate presented averages of 3.73 ± 2.50 and 3.63 ± 1.48 g m-2 day-1 in the rainy and transition seasons, respectively. In the dry season, it was minimised at 48.4 days. The relative growth rate mean was 0.0075 ± 0.0037 during the rainy season. In the transition and dry seasons, it adjusted to the third-degree polynomial model. The growth index rates of elephant grass cv. Roxo are modified by growing seasons, and the pattern and magnitude of the response varies throughout the growth cycle.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67526730","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

Reproductive performance and luteal function of Santa Ines ewes inseminated by cervical retraction with fresh or frozen semen 用新鲜或冷冻精液进行宫颈回缩受精的圣婴母羊的生殖性能和黄体功能

Revista Brasileira de Saude e Producao Animal Pub Date : 2020-01-01 DOI: 10.1590/s1519-99402121032020

C. Alvares, J. Cruz, C. C. Romano, F. Brandão

{"title":"Reproductive performance and luteal function of Santa Ines ewes inseminated by cervical retraction with fresh or frozen semen","authors":"C. Alvares, J. Cruz, C. C. Romano, F. Brandão","doi":"10.1590/s1519-99402121032020","DOIUrl":"https://doi.org/10.1590/s1519-99402121032020","url":null,"abstract":"SUMMARY The artificial insemination (AI) by cervical retraction using fresh or commercially available frozen semen was evaluated. Santa Inês ewes (n=151) were assigned in five groups. Natural mating (NM) composed the control group. Four groups were submitted to hormonal treatment and timed insemination by cervical retraction (CRI) or laparoscopy (LAI), using fresh or frozen semen. To perform CRI, the ewes were kept in standing position. The time required to penetrate the cervical canal and to perform CRI were recorded; local deposition of semen and the reaction intensity of the ewe (weak, moderate or strong) were measured. Blood samples were collected to perform the progesterone dosage at days 0, 3, 5, 12 and 17 (day 0 = AI/NM). Non-return to estrus rate (NRE), pregnancy (at D35) and fertility (birth / mated ewes) were evaluated. Mean time for cervical penetration and CRI were 52.8 ± 21.2s and 3:26min ± 47s, respectively. Reaction intensity to CRI was weak or moderate in 92.3% of the ewes. Serum levels of progesterone after CRI, LAI or NM were similar. NRE of the inseminated ewes were similar, except for CRI with frozen semen, which was lower (P<0.05). Fertility rates were similar between CRI and LAI (35.4% and 42.2%, respectively). Artificial insemination by cervical retraction with ewes in a standing position is practical, and does not change the progesterone profile, providing reproductive rates similar to laparoscopy. However, the use of this technique along with commercial frozen semen presents low fertility rate.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67531502","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: 1

Thermal stress alters the basal value of serum proteins in laying hens 热应激改变了蛋鸡血清蛋白的基础值

Revista Brasileira de Saude e Producao Animal Pub Date : 2020-01-01 DOI: 10.1590/s1519-99402121062020

Larissa Grunitzky, João Rogério Centenaro, N. Silva, Julia de Moraes Paulo, A. M. Silveira, G. Lopes, G. A. Felix, P. H. Braz

{"title":"Thermal stress alters the basal value of serum proteins in laying hens","authors":"Larissa Grunitzky, João Rogério Centenaro, N. Silva, Julia de Moraes Paulo, A. M. Silveira, G. Lopes, G. A. Felix, P. H. Braz","doi":"10.1590/s1519-99402121062020","DOIUrl":"https://doi.org/10.1590/s1519-99402121062020","url":null,"abstract":"ABSTRACT This study aimed to evaluate the effect of thermal stress on the physiological and metabolic parameters in laying hens and the microbiological quality of eggs. The experiment was performed with 50 Rhode Island Red hens in the initial laying phase, under standard diet, lodged in 20 m² stalls under controlled temperature, for 30 days. The laying hens were randomly divided into two groups: G1 - the control group, which contained 10 hens exposed to the temperature of 17 ºC; G2 - the treatment group, which contained 40 hens exposed to the temperature of 30 ºC. The physiological parameters evaluated were: cloacal temperature, body surface temperature, heart rate, respiratory rate, and weight. Biochemical tests included total protein, albumin, globulin, and glucose. The group subjected to thermal stress showed lower body weight, increased heart rate, a slight increase in the respiratory rate, and increase in body surface temperature when compared with the control group (P < 0.05), although no significant differences were observed regarding cloacal temperature. As for the metabolic parameters, the treated group showed an increase in total proteins and globulins compared with the control group (P < 0.05), while albumin remained at basal levels. Additionally, hypoglycemia was observed in the treated group. Samples from egg shells and yolk were subjected to the analyses for the detection of Salmonella spp. These microorganisms were not detected amongst the egg samples.","PeriodicalId":38522,"journal":{"name":"Revista Brasileira de Saude e Producao Animal","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67531537","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: 2