|
|
|
| Registros recuperados: 31 | |
|
|
| Souza Júnior, Alcy Heleno de; Lana, Rogério de Paula; Teixeira, César Roberto Viana; Gionbelli, Mateus Pies; Veloso, Cristina Mattos; Rennó, Luciana Navajas. |
| Current study evaluated the inclusion of protected fat and different levels of crude protein (CP) in the diet of crossbreed cows in early lactation. Twelve cows were distributed in a 4 x 4 factorial design, with four treatments (12 or 16% CP, with or without MEGALAC-E®). Statistical analyzes with ANOVA and Pearson’s linear correlation procedures were performed. Protected fat did not affect intake of dry matter (DM) and organic matter (OM) (p > 0.05). Increased CP raised consumption of CP and EE and decreased the non-fiber carbohydrates (NFC; p <0.05). Protected fat increased (p <0.05) the digestibility of DM, OM, CP and ashes in the lower protein content. CP increase raised the level of blood and urinary urea (p < 0.05). There was no difference... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.03.00-1; 5.04.03.02-8 concentrate; Dietary protein; Digestibility; Intake; Lipid supplementation; Milk yield. |
| Ano: 2016 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/29150 |
| |
|
|
| Hassan, Laila Khaled; Shazly, Ahmed Behdal; Kholif, Abd El-Kader Mahmoud; Sayed, Ahmed Farouk; El-Aziz, Mahmoud Abd. |
| Produce and compare soft cheese with potential benefits of human health from Egyptian buffalo's and cow's milk was studied. Eight Egyptian lactating buffalos and cows were fed a total mixed ration supplemented with either 0% oil (CD), 2% flaxseed oil (DFO), 2% soybean oil (DSO), or 2% of their mixture (1:1, DFSO) according to a double 4 x 4 Latin Square design. Milk yield was similar between buffalo's diets but was higher in cows fed a DFO, DSO or DFSO resulting in 11.15, 8.21% or 8.97% increases compared with the control diet, respectively. Milk composition was not significantly affected in both buffalos and cows fed diets. The DFO, DSO or DFSO displayed decreased short-chain fatty acids, especially DSO and DFSO (3.73 and 3.33%, respectively) when... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Flaxseed oil; Soybean oil; Milk yield; Fatty acids profile; Antioxidant activity soft cheese properties.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/47200 |
| |
|
|
| Kouri, Fatima; Charallah, Salima; Kouri, Amina; Amirat, Zaina; Khammar, Farida. |
| This research aims to assess the performances of lactating Bedouin goat under arid conditions, focusing on the relationship of milk yield with body and udder morphology and growth traits. Fourteen goats and their kids were followed during early lactation (90 days post-partum). Mean daily milk yield was 0.56 kg. Milk fat, proteins, lactose, solids non-fat and minerals were respectively 34.9, 38.9, 48.8, 107 and 6.7 g L-1. Mean kids’ birth weight, adjusted body weight at 90 days of age and average daily gain were respectively 2 kg, 6.6 kg and 51.4 g day-1. Daily milk yield was correlated with goats’ body weight, withers height, rump height, udder width and udder circumference but not with linear udder score and growth performances. These results provide... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Growth performances; Milk yield; Sahara; Udder.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/42552 |
| |
|
|
| Garcés A,R; López F,J; Bruckmaier,R. M. |
| Thirty-four dairy farms in the south central zone of Chile were evaluated in order to describe the functioning of the milking machines with respect to vacuum, pulsators, milklines and cluster characteristics and their relationship with somatic cell count (SCC) and milk yield (MY). An inadequate nominal vacuum level (NVL) was one factor that influenced negatively SCC. The increase of SCC was more accentuated in those milking machines with high-lines than mid- and low-lines. MY was also negatively influenced by an inadequate high NVL. Higher MY value was found in those farms which had < 44 kPa NVL. In all cases, effective vacuum reserve deficit (EVRD) produced SCC above international recommendations. The EVRD effect was not significant (P > 0.05) on... |
| Tipo: Journal article |
Palavras-chave: Milking machine; Dairy; Milk yield. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072006000100004 |
| |
|
|
| Ferreira,Abílio G.T.; Henrique,Douglas S.; Vieira,Ricardo A.M.; Maeda,Emilyn M.; Valotto,Altair A.. |
| The objective of this study was to evaluate four mathematical models with regards to their fit to lactation curves of Holstein cows from herds raised in the southwestern region of the state of Parana, Brazil. Initially, 42,281 milk production records from 2005 to 2011 were obtained from "Associação Paranaense de Criadores de Bovinos da Raça Holandesa (APCBRH)". Data lacking dates of drying and total milk production at 305 days of lactation were excluded, resulting in a remaining 15,142 records corresponding to 2,441 Holstein cows. Data were sorted according to the parity order (ranging from one to six), and within each parity order the animals were divided into quartiles (Q25%, Q50%, Q75% and Q100%) corresponding to 305-day lactation yield. Within each... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dairy cattle; Milk yield; Mathematical models selection; Non-linear models. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652015000100503 |
| |
|
|
| Dailidavičienė,J.; Budreckienė,R.; Gružauskas,R.; Kerzienė,S.; Andrulevičiūtė,V.; Sinkevičienė,I.. |
| ABSTRACT The aim of the study was to determine the effect of Saccharomyces cerevisiae, multienzyme composition supplementation on milk yield, quality, blood biochemical parameters of Lithuanian-Black-and-White cows. For this reason 28 cows were divided into four groups (three experimental and one control) each with seven cows fed balanced ration (control group) and following experimental groups: addition of 40g supplement of live yeast with organic selenium (group A); 40g supplement of live yeast with aromatic additives (group B); and 0.2g supplement of multienzyme composition (group C) during a 90 days period. The study showed that milk yield was 2.64%, 1.75%, 1.4% higher in groups A, B, C respectively, comparing with the control group. The milk SCC in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dairy cow; Probiotic; Yeast; Milk yield; Blood. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000300939 |
| |
|
|
| Tonhati,H.; Muñoz,M.F.C.; Duarte,J.M.C.; Reichert,R.H.; Oliveira,J.A.; Lima,A.L.F.. |
| Correction factors for milk yield at 90, 240, 270 and 305 days of lactation of buffaloes and genetic and environmental parameters for milk yield of these lactation periods were estimated. The data used consisted of 3888 lactation records of 1630 buffaloes from 10 herds reared in the State of São Paulo. Genetic parameters were estimated by the derivative free restricted maximum likelihood method, fitting an animal repeatability model. Heritability estimates for milk yield corrected for 90, 240, 270 and 305 days of lactation were 0.17, 0.15, 0.14 and 0.14, respectively. In this same order, repeatability estimates were 0.40, 0.44, 0.41 and 0.41. The genetic correlation estimates between these corrected milk yields ranged from 0.96 to 1.00. The multiplicative... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Buffalo; Lactation length; Milk yield. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352004000200016 |
| |
|
|
| Bondan,Carlos; Folchini,Jéssica Aneris; Noro,Mirela; Machado,Karine Martini; Muhls,Eduardo; González,Félix Hilário Diaz. |
| ABSTRACT: This study vised to detect possible changes in chemical and cellular composition of cow’s milk at different milking sessions and to test if proportional or composite milk sampling can be used instead of separate milk analysis. Two experiments were conducted: one in cows milked thrice daily and the other one in cows milked twice daily. In both experiments, three milk samples were collected from each cow in each milking session in order to determine milk composition at each milking; to have a composite sample, i.e., a single sample from the same aliquots of milk from each milking session; and to have a proportional sample, i.e., a single sample from each milking session in a volume proportional to milk volume yielded. Fat content and fat to... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Composite sample; Milk composition; Milk yield; Milk somatic cells; Proportional sample. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000600654 |
| |
|
|
| Fonseca,Luís Fernando Laranja da; Rodrigues,Paulo Henrique Mazza; Santos,Marcos Veiga dos; Lima,André Pinto; Lucci,Carlos de Sousa. |
| The objective of this study was to analyse the effects of propylene glycol (PPG) supplementation to periparturient cows on: milk yield, changes in body condition score (BCS), days to first oestrus after calving, and on the beta-hydroxybutyrate (BHBA), non-esterefied fatty acids (NEFA) and glucose concentrations. Twenty-three Holstein cows were distributed into two treatments: a) 300 mL of PPG (group treatment, 11 cows), b) 300 mL of water (group control, 12 cows), administered via drench in periparturient period. BCS was evaluated on days -10, 0, 15, 30, 45 and 60 relative to calving date. There was no effect of treatment or time on milk yield, although the interaction of time*treatment was significant and during the 4th and 5th week of lactation, milk... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dairy cow; Propylene glycol; Milk yield; Body condition score; Reproductive performance. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782004000300037 |
| |
|
| |
|
|
| Deng,Chanjuan; Ma,Rongnuan; Yue,Xiangpeng; Lan,Xianyong; Chen,Hong; Lei,Chuzhao. |
| The association of IGF-I gene polymorphisms with certain traits in 708 individuals of two Chinese dairy-goat breeds (Guanzhong and Xinong Saanen) was investigated. Polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) and DNA sequencing methods were employed in screening for genetic variation. Two novel mutations were detected in the 5'-flanking region and in intron 4 of IGF-I gene, viz., g.1617 G > A and g.5752 G > C (accession D26119.2), respectively. The associations of the g.1617 G > A mutation with milk yield and the body size were not significant (p > 0.05). However, in the case of g.5752 G > C, Xinong Saanen dairy goats with the CG genotype presented longer bodies (p < 0.05). Chest circumference (p < 0.05)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: IGF-I gene; Dairy goat; Milk yield; PCR- SSCP. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572010000200012 |
| |
|
|
| Geha,Makram J.; Keown,Jeffrey F.; Van Vleck,L. Dale. |
| Milk yield records (305d, 2X, actual milk yield) of 123,639 registered first lactation Holstein cows were used to compare linear regression (y = β0 + β1X + e) ,quadratic regression, (y = β0 + β1X + β2X2 + e) cubic regression (y = β0 + β1X + β2X2 + β3X3 + e) and fixed factor models, with cubic-spline interpolation models, for estimating the effects of inbreeding on milk yield. Ten animal models, all with herd-year-season of calving as fixed effect, were compared using the Akaike corrected-Information Criterion (AICc). The cubic-spline interpolation model with seven knots had the lowest AICc, whereas for all those labeled as "traditional", AICc was higher than the best model. Results from fitting inbreeding using a cubic-spline with seven knots were compared... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Akaike's information criterion; Cubic-spline interpolation; Inbreeding; Milk yield. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572011000300013 |
| |
|
| |
|
| |
|
|
| Freitas,Wandemberg Rocha; Ferreira,Marcelo de Andrade; Silva,Janaina Lima; Véras,Antônia Sherlânea Chaves; Barros,Leonardo José Assis; Alves,Adryanne Marjorie Souza Vitor; Chagas,Juana Catarina Cariri; Siqueira,Thamires Damascena Quirino; Almeida,Gleidiana Amélia Pontes de. |
| Abstract: The objective of this work was to evaluate the effects of different levels of sugarcane bagasse, as exclusive roughage, on nutrient intake and digestibility, feeding behavior, microbial protein synthesis, and dairy performance of crossbred cows. Ten lactating Girolando breed cows (600±34.3 kg body weight) were assigned to a replicated 5×5 Latin square design. The control diet, based on spineless cactus, sugarcane bagasse, and concentrate, was formulated to meet the average production of 20 kg of milk per day, with 3.5% fat. The evaluated levels of sugarcane bagasse were: 30, 38, 46, and 54% dry matter bases. The intake and digestibility of dry matter decreased linearly with sugarcane bagasse levels. Rumination time was higher in cows fed 54%... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative roughage; Digestibility; Feeding behavior; Milk yield. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000300386 |
| |
|
|
| Córdova,Helder de Arruda; Alessio,Dileta Regina Moro; Cardozo,Leonardo Leite; Thaler Neto,André. |
| Abstract: The objective of this work was to evaluate the impact of production factors on milking frequency and the latter’s effect on animal welfare in robotic milking. The experiment was performed with Holstein Friesian cows housed in free-stall barns. To assess the impact of production factors, body condition score, milk yield, and concentrate intake were determined. To determine the effects of the milking frequency on welfare, the locomotion and teat-end scores and serum cortisol level were evaluated. Three experimental groups were formed according to the daily average milking frequency: 1.0 to 1.9, 2.1 to 2.9, and above 3.0 milkings per day. The decrease in milking frequency during lactation was related to the reduction in concentrate intake and milk... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cortisol; Free-stall system; Lactation; Milk yield; Voluntary milking system. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000200238 |
| |
|
|
| Buzas, Gyula; Szabo, Ferenc. |
| Azt vizsgáltuk, hogy a különböző mennyiségű, zsír- és fehérjetartalmú tejet termelő szarvasmarhafajták (holstein-fríz, magyar tarka, jersey) esetében miképpen alakulnak a tejtermelés bevételei és költségei, valamint azt, hogy a koncentráltabb tejért fizetett felárak és a feldolgozásukban jelentkező költségmegtakarítás milyen arányban állnak egymással. Megállapítható volt, hogy a tehenészetek mindhárom fajtánál, a jelenlegi árviszonyok mellett, némi jövedelmet csak a költségvetési támogatásoknak köszönhetően érnek el. A tejtermelésben a fajták versenyképessége legpontosabban a termelési érték és a takarmányköltség különbözete alapján ítélhető meg, az egyéb költségek többségének alakulása ugyanis nem a fajtától függő. A magyar tarka a tejtermelésben nem... |
| Tipo: Article |
Palavras-chave: Tejhozam; Tejzsír; Tejfehérje; Tejfeldolgozás; Felárak; Milk yield; Milk fat; Milk protein; Milk processing; Premiums; Livestock Production/Industries; Production Economics. |
| Ano: 2011 |
URL: http://purl.umn.edu/119898 |
| |
|
|
| Santos,Viviany Lúcia Fernandes dos; Ferreira,Marcelo de Andrade; Guim,Adriana; Silva,Fabiana Maria da; Urbano,Stela Antas; Silva,Emmanuelle Cordeiro da. |
| Alternative sources of protein for lactating cows were evaluated in this study with respect to intake, digestibility, milk yield and milk composition. Eight multiparous Holstein/Gyr cows were simultaneously distributed in two 4 × 4 latin squares. Each experimental period lasted 21 days (14 days for adaptation and seven days to collect data and samples). Three protein sources, cottonseed meal, semi-integral soybean meal and corn steep liquor were evaluated and soybean meal was used as a control. When the corn steep liquor was used, lower intakes of dry matter, organic matter, crude protein and total digestible nutrients were observed compared with soybean meal. Animals that consumed corn steep liquor had a lower milk yield than those fed soybean meal, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: By-product; Digestibility; Intake; Milk yield. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001000019 |
| |
|
|
| Henao-Velásquez,Andrés F.; Múnera-Bedoya,Oscar David; Herrera,Ana Cristina; Agudelo-Trujillo,Jorge H.; Cerón-Muñoz,Mario Fernando. |
| The objective of this study was to evaluate lactose and milk urea nitrogen (MUN) in milk from Holstein cows and their relationship with days in milk (DIM), milk yield, milk fat, milk protein, and somatic cell count (SCC). A total of 1,034 records corresponding to morning and afternoon milkings of 148 Holstein cows were used. Records were taken from 16 herds located in the Northern and Eastern dairy regions of Antioquia (Colombia). The curves were fitted using a generalized additive mixed model with smoothed estimates to find the best smoothing intensity factors involved in MUN and lactose concentration. Regarding MUN, the contemporary group effect was highly significant, but the parity effect was not significant. The DIM, lactose and milk fat smoothed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dairy cattle; Generalized additive model; Milk metabolites; Milk yield. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982014000900479 |
| |
|
|
| Gomes,Raphael dos Santos; Oliveira,Tadeu Silva de; Pereira,José Carlos; Vieira,Ricardo Augusto Mendonça; Henrique,Douglas Sampaio; Fernandes,Alberto Magno; Leonel,Fernando de Paula. |
| ABSTRACT Ten Holstein-Zebu crossbred cows distributed into two simultaneous Latin squares (5 × 5) as a 2 × 2 factorial arrangement formed by chopped sugarcane or elephant grass silage, both with high or low protein degradability supplements and a corn silage as a control treatment, were compared using orthogonal contrasts. The studied variables were the performance, plasma concentrations of urea-N, glucose, and creatinine, urine-N and milk urea-N, and the nychthemeral variation in NH3-N in the rumen fluid of dairy cows. Nutrient intake, milk production, and milk composition were affected by the treatments. The total mixed ration containing elephant grass silage combined with rumen undegradable protein (RUP) provided balanced amounts of carbon and nitrogen... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Intake; Milk yield; Nitrogen metabolites; Tropical forages. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982016000900572 |
| |
| Registros recuperados: 31 | |
|
|
|
