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| Registros recuperados: 34 | |
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| Moreira,Rennan Herculano Rufino; Lanferdini,Eloiza; Fonseca,Leonardo da Silva; Chaves,Rhuan Filipe; Garbossa,Cesar Augusto Pospissil; Saraiva,Alysson; Nogueira,Eduardo Terra; Abreu,Márvio Lobão Teixeira de. |
| ABSTRACT The objective of this study was to evaluate the effect of L-arginine supplementation in lactation diets on the productive and reproductive performance of pluriparous sows and their litters. Seventy-six sows of the same genetic line were assigned to four treatments in a completely randomized design with 19 replicates. The experimental unit was the sow and its respective litter. Treatments comprised a control diet (no L-arginine supplementation) and other three diets obtained by top dressing the control diet with 0.5, 1.0, and 1.5% of L-arginine. L-arginine supplementation had no effect on any performance variables, body condition, milk production, or weaning-estrus interval. There was a quadratic effect on percentage of protein and fat in milk as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acid; Lactation; Milk composition; Reproduction; Swine. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100530 |
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| Cardoso,Vera Lucia; Lima,Maria Lucia Pereira; Nogueira,José Ramos; Carneiro,Raul Lara Resende de; Sesana,Roberta Cristina; Oliveira,Elisa Junqueira; El Faro,Lenira. |
| The objective of this study was to calculate economic values for milk (MY), protein (PY) and fat productions (FY) and somatic cell count (SCC) which could be used to compose an economic index to rank animals involved in an international genetic evaluation program of Holstein cattle used in the commercial dairy population in Brazil. The main milk production systems (MPS) prevailing in the South and Southeast were defined based on the feeding management and production level of herds. To calculate feeding costs, energy requirements for the production of one kg of milk with the respective average protein and fat contents of each MPS were calculated. Feeding costs were obtained based on the regional prices of the diets' components. To calculate revenues, milk... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dairy cattle; Milk composition; Selection index. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014001200636 |
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| Ardicli,Sena; Soyudal,Bahadir; Samli,Hale; Dincel,Deniz; Balci,Faruk. |
| ABSTRACT The objectives of the study were to evaluate allelic frequencies and test the association between STAT1, OLR1, CSN1S1, CSN1S2 , and DGAT1 gene polymorphisms and milk production traits including lactation milk yield, 305 days milk yield, days before peak milk production, and peak milk yield. In addition, samples of milk were analysed for fat, protein, lactose, and total solid contents. A total of 168 purebred Holstein-Fresian cows were genotyped using polymerase chain reaction and restriction fragment length polymorphism methods. Statistical analysis was carried out using least square methods of the general linear model procedure. Significant differences were found between genotypes of the CSN1S2 locus in relation to milk protein content. In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cattle; Dairy cow; Milk composition; Polymorphism. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982018000100411 |
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| Abrego Castillo, Himelda. |
| El objetivo de la presente investigación fue conocer la estructura y funcionalidad productiva y económica del sistema de producción de leche del municipio de Nopalucan, Puebla. La información se obtuvo de visitas técnicas y la aplicación de un cuestionario en 50 unidades de producción. Y se analizó con estadística descriptiva, análisis de varianza y métodos multivariados, que permitieron definir las tipologías de las explotaciones. En la parte estructural, se encontraron en promedio, hatos compuestos por 7.9 cabezas de bovinos Holstein y sus cruzas con Suizo y Jersey, de las cuales, 2.5 fueron vacas en producción; la superficie agrícola fue de 4.4 ha, con productores de 53 años de edad y con una experiencia de 21.9 años dedicados a la actividad lechera,... |
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Palavras-chave: Sistemas de producción; Bovinos lecheros; Composición de leche; Livestock production systems; Dairy cattle; Milk composition; Estrategias para el Desarrollo Agrícola Regional; EDAR; Maestría. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/613 |
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| Silva,Jacianelly Karla da; Oliveira,Juliana Silva de; Medeiros,Ariosvalo Nunes de; Santos,Edson Mauro; Magalhães,Tamires da Silva; Ramos,Alenice Ozino; Bezerra,Higor Fábio Carvalho. |
| The objective of this study was to evaluate the use of wheat bran as an additive in elephant-grass silage on intake and digestibility of the nutrients, ingestive behavior, and yield and chemical composition of milk. Eight goats with 45 days of lactation were distributed in a (4 × 4) Latin square design.The treatments consisted of corn silage (CS), elephant-grass silage without wheat bran (EGS), elephant-grass silage with 10% wheat bran (EGS+10%WB), and elephant-grass silage with 20% wheat bran (EGS+20% WB). There was no difference in dry matter (DM) intake between diets EGS and CS in g d−1. However, the animals fed EGS+10%WB had lower DM and organic matter (OM) intakes than the animals fed CS in g kg−1 d−1 of body weight. There were lower non-fiber... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Additive; Caprine; Ethology; Milk; Milk composition; Nutritive value. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014001100618 |
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| Saraiva,Carla Aparecida Soares; Gonzaga Neto,Severino; Henriques,Lara Toledo; Queiroz,Maria Fernanda Soares; Saraiva,Edilson Paes; Albuquerque,Rômulo Pontes de Freitas; Fonseca,Vinicius de França Carvalho; Nascimento,George Vieira do. |
| The objective of this study was to evaluate the association of forage cactus with different fiber sources (elephant grass hay - EGH; corn straw - CS, hay of cassava shoots - HCS; fresh sugarcane bagasse - FSB; and hydrolyzed sugarcane bagasse - HSB) on the milk yield and composition and the feeding behavior of lactating Sindhi cows. Five cows with average body weight, average daily milk yield, and average daily 4%-fat-corrected milk yield of 265, 4.95 and 5.22 kg, respectively, were used in a 5 × 5 Latin square design. The effect of experimental diets on milk yield and composition, feeding time (FT), rumination time (RT), idle time, mean values of total chewing time (TCT), number of ruminal boli (NRB), number of rumination chews (NRC), and feed efficiency... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feeding behavior; Milk composition; Milk production; Roughage; Zebu. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982015000200060 |
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| Lima, Edine Roberta de; Oliveira, Juliana Paula Felipe de; Bezerra, Maria de Fátima; Borba, Luis Henrique Fernandes; Bezerra, Joadilza da Silva; Rangel, Adriano Henrique do Nascimento. |
| The objective of this study was to evaluate the influence seasons of the year and somatic cell counts (SCC) on physical-chemical and sensory parameters of cow’s milk from individual and collective refrigeration tanks with different milking systems. In addition to analyzing the sensory acceptance of pasteurized milk and coalho cheese developed with high (> 800,000 cells mL-1) and low SCC levels (<200,000 cells mL-1). Seasonality did not affect fat content, casein, lactose, total solids, defatted dry extract and SCC, but lower protein levels than May and June were observed from July to September. Based on the SCC results, milk from refrigeration tanks was classified as low SCC and high SCC. The samples were used to obtain pasteurized milk and coalho... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Qualidade do leite; Análise sensorial dairy products; Mastitis; Milk composition; Milk quality; Refrigeration tank; Shelf life.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/44666 |
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| Gonzalez,Helenice de Lima; Velho,Ione Maria Pereira Haygert; Silva,Marcelo Abreu da; Medeiros,Renato Borges de; Paim,Nilton Rodrigues; Nörnberg,José Laerte. |
| This study was carried out to evaluate the effect of the use of supplementation in pasture cultivated with Avena strigosa (black oats), Lolium multiflorum (ryegrass) and Vicia sativa L. (common vetch) on the composition and somatic cells count (SCC) of Jersey cow milk. Eight cows of the Jersey breed were separated by milk production, lactation period and live weight and were randomly blocked into two homogeneous groups (one with supplementation and other only on pasture), in a randomized complete design. Both groups were allowed to pasture for about 7 hours per day in a rotational grazing system in strips, with a one-day occupation period. The supplemented group was fed daily with 8 kg of supplement made of soy bean meal, soy shells, calcium limestone and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Milk composition; Pasture; Somatic cells count. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009001000018 |
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| Gonzalez,Félix; Muiño,Rodrigo; Pereira,Víctor; Martinez,Diego; Castillo,Cristina; Hernández,Joaquín; Benedito,José Luis. |
| The objective of this work was to determine productive and fertility responses of Holstein-Friesian heifers and cows to supplementation with extruded linseed and soybean as sources of polyunsaturated fatty acids (PUFAs). Supplementation had a positive effect on profitability, with significant increases in milk yield in supplemented cows, but not in heifers. Treatments had no effect on milk fat content, but higher milk protein contents were observed with supplementation. A higher conception rate was found for supplemented heifers, but not for cows. Fat sources containing PUFAs are recommended for dairy cattle supplementation, since they improve fertility in heifers and milk yield in cows. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Extruded linseed; Extruded soybean; Fertility; Long-chain fatty acids; Milk composition; PUFA.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000400306 |
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| Ramos, Joao Paulo de Farias; Sousa, Wandrick Hauss de; Cavalcante, Iara Tamires Rodrigues; Oliveira, Juliana Silva; Santos, Edson Mauro; Pimenta Filho, Edgard Cavalcanti; Freitas, Fabianna Fortuna de; Leite, Ricardo Miranda. |
| The objective of this study was to evaluate the use of multinutritional blocks (BMs) associated with the concentrate content in the diet of lactating goats and their effects on milk production and economic viability. Eight goats Parda Alpina, multiparas were distributed in two Latin squares (4x4). The experiment consisted of four treatments (0.971, 0.746, 0.521 and 0.296 kg concentrate day-1 per goat) and BMs ad libitum. It was evaluated the consumption, milk monitoring and the system was analyzed economically. If there was a significant effect of the concentrate, the control treatment was compared to the others using the Dunnett test and 5% regression analysis. When the concentrate contents were high in the diets, the total dry matter intake decreased... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.00.00-2 5.04.05.00-4 Feeding plans; Milk composition; Profitability.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47441 |
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| Antunović,Zvonko; Šperanda,Marcela; Mioč,Boro; Klir,Željka; Ćavar,Suzana; Novoselec,Josip. |
| ABSTRACT The objective of this research was to evaluate the effect of pea and sunflower cake as partial replacement for soybean meal in diet, as well as to assess their effect on milk quality during lactation and on blood parameters of ewes kept in organic farming. The research was carried out with 30 ewes of Merinolandschaf breed during 75 days. Ewes were given mixtures based on soybean meal as a protein source in control group (SBM), while in experimental groups, soybean meal was partially replaced with pea grain (P) and sunflower cake (SFC). Biochemical parameters (urea, glucose, total protein, albumin, globulins, cholesterol, HDL, LDL, triglyceride, β-hydroxybutyrate, and non-esterified fatty acids), as well as enzyme activity (ALT, AST, ALP, GGT, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Blood parameters; Ewes; Milk composition; Protein source. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982019000100718 |
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| Leite,Leonardo Andrade; Reis,Ronaldo Braga; Pimentel,Patrícia Guimarães; Saturnino,Helton Mattana; Coelho,Sandra Gesteira; Moreira,Guilherme Rocha. |
| ABSTRACT This study aimed to evaluate the effect of diets containing sunflower or corn silages and concentrate based on citrus pulp or ground corn on intake, apparent digestibility, feeding behavior, microbial protein production, and production, composition, and fatty acid profile of milk from dairy cows. Eight multiparous lactating Holstein cows (586±61 kg live weight; 25.0±4.0 kg daily milk yield at 80 to 120 days in milk) were randomly assigned to a double 4 × 4 Latin square design with a 2 × 2 factorial array. The experimental diets were: sunflower silage + citrus pulp-based concentrate; sunflower silage + ground corn-based concentrate; corn silage + citrus pulp-based concentrate; and corn silage + ground corn-based concentrate. The dry matter intake... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Digestibility; Fatty acids; Intake; Milk composition. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000100056 |
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| Torii,Marcelo Shizuo; Damasceno,Júlio César; Ribeiro,Luciano da Rocha; Sakaguti,Eduardo Shiguero; Santos,Geraldo Tadeu dos; Matsushita,Makoto; Fukumoto,Nelson Massaru. |
| The objective of the present work was to evaluate the physical-chemical characteristics (density, pH, acidity, fat, protein, lactose and total of solids contents) and milk fatty acids composition (C: 4 to C: 20) in response to roughage sources (alfalfa hay T1; oat hay T2 and maize silage T3). Nine Saanen lactating goats were used, in a triple Youden square design (3 animals x 2 periods). There was no treatment effects in the physical-chemical variables in the univariate analyses; by multivariate analyses three distinct patterns of fatty acids could be defined: milk with greater quantity of short chain fatty acids and acids C17:1omega7 e C18:2omega6 (T1); milk with equivalent amounts of short, medium and long chain fatty acids (T2); and milk with greater... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alfafa hay; Maize silage; Milk quality; Milk composition; Oat hay; Saanen. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000600010 |
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| Botaro,Bruno Garcia; Cortinhas,Cristina Simões; Mestieri,Lucinéia; Machado,Paulo Fernando; Santos,Marcos Veiga dos. |
| The aim of this study was to estimate the concentration of milk true protein (TP) by mid-infrared absorbance method (MIR) in samples from bulk tank of dairy herds, and to determine the correlation between the results of TP of milk determined by Kjeldahl and MIR. Forty nine dairy herds were selected (17 Holstein, 6 Jersey and 26 Girolando) for monthly collections of samples from bulk tanks during the period of one year (284 samples). Fat, lactose, crude protein and total solids were firstly determined by MIR, and then analyzed for total and true protein by Kjeldahl method. The regression equation to estimate TP contents based on MIR crude protein determination was as follows: TP=0.0021+(1.0104xCP), where: TP is the content of true protein, CP is the crude... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dairy cow; Milk composition; Protein determination. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782011000800028 |
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| Abreu,Bueno da Silva; Barbosa,Severino Benone Paes; Silva,Elizabete Cristina da; Santoro,Kleber Régis; Batista,Ângela Maria Vieira; Martinez,Rafael Leonardo Vargas. |
| ABSTRACT Using multivariate analyses, this study attempted to identify important traits explaining the relationship between milk production and quality produced by Holstein cows. Monthly milk records from three commercial dairy farms located in the Agreste region of Pernambuco, Brazil, collected in the period from 2007 to 2017, were used. A total of 5,872 observations regarding milk production, milk components and somatic cell score (SCS) were analyzed using principal component analysis (PCA) and cluster analysis. According to the former analysis, the first three principal components explained 79.69% of the total variation. Total solids content contributed 29.66% of the variation in the first principal component, while lactose content contributed 49.43% of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Multivariate analysis; Dairy cattle; Milk composition. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000300417 |
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| Botaro,Bruno Garcia; Gameiro,Augusto Hauber; Santos,Marcos Veiga dos. |
| Programs designed to enhance milk quality have been used to motivate dairy farmers to improve the quality of the raw milk they produce. The objective of this study was to evaluate the association between a milk quality payment program and four indicative variables of milk quality, by testing bulk tank somatic cell count (SCC), bulk tank total bacterial count (TBC), fat (FAT) and protein (PROT) percentages over three years in four dairy cooperatives in Southern Brazil. We used a multiple regression econometric model estimated from market data of milk delivered by farmers to the cooperatives. Bulk tank milk samples (n = 19,644) were monthly collected. The data set was analyzed for the effects of seasonality, average daily volume of milk, the award/penalty,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bacterial count; Somatic cell count; Premium payment; Milk composition; Milk production. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162013000100004 |
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| Registros recuperados: 34 | |
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