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Journal articles on the topic 'Milking frequency; Milk yield'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Mačuhová, Lucia, Vladimír Tančin, and Juliana Mačuhová. "The effect of milking frequency on milk yield and milk composition in ewes." Czech Journal of Animal Science 65, No. 2 (2020): 41–50. http://dx.doi.org/10.17221/254/2019-cjas.

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Milking frequency is the main factor regulating milk yield and milk quality if feeding, welfare, health, and environmental conditions are adequate. Milk yield and composition are substantially influenced by breed, and consequently the breed has an impact on both factors at a different frequency of milking. Further, the size of cisternal compartment plays an important role in accommodating secreted milk between milkings. Thus, ewes with large cisterns (i.e. large cisternal area, high cisternal milk percentage, and delayed tight junction opening during milk stasis) adapt themselves better to lon

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O'BRIEN, BERNADETTE, GERARD RYAN, WILLIAM J. MEANEY, DAVID McDONAGH, and ALAN KELLY. "Effect of frequency of milking on yield, composition and processing quality of milk." Journal of Dairy Research 69, no. 3 (2002): 367–74. http://dx.doi.org/10.1017/s0022029902005605.

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The objective was to determine the effect of once-daily milking (ODM) and omitting one evening milking each week (13TWM), in late lactation on milk production, composition and processability. Seventy-two cows were assigned to three treatments (ODM, 13TWM and twice-daily milking [TDM]) from 4 October to 12 December. Cows were on average 218 d into lactation at the start of the trial, and all cows were managed similarly throughout the trial. Milk yields and gross milk composition of cows on all treatments were measured, and milk samples for detailed compositional and processability analysis were

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Córdova, Helder de Arruda, Dileta Regina Moro Alessio, Leonardo Leite Cardozo, and André Thaler Neto. "Impact of the factors of animal production and welfare on robotic milking frequency." Pesquisa Agropecuária Brasileira 53, no. 2 (2018): 238–46. http://dx.doi.org/10.1590/s0100-204x2018000200013.

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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.

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Bach, Alex, and Isabel Busto. "Effects on milk yield of milking interval regularity and teat cup attachment failures with robotic milking systems." Journal of Dairy Research 72, no. 1 (2005): 101–6. http://dx.doi.org/10.1017/s0022029904000585.

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A database consisting of 35291 milking records from 83 cows was built over a period of 10 months with the objectives of studying the effect of teat cup attachment failures and milking interval regularity on milk production with an automated milking system (AMS). The database collected records of lactation number, days in milk (DIM), milk production, interval between milkings (for both the entire udder and individual quarters in case of a teat cup attachment failure) and average and peak milk flows for each milking. The weekly coefficient of variation (CV) of milking intervals was used as a mea

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Sharipov, Delyus, Rubin Kayumov, Takhir Akhmetov, Rustam Ravilov, and Firaya Akhmetzyanova. "The effect of milking frequency and intervals on milk production and functional properties of the cows’ udder in automatic milking systems." BIO Web of Conferences 17 (2020): 00036. http://dx.doi.org/10.1051/bioconf/20201700036.

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The objective of this study was to describe the association between the milking frequency and milk production and to determine the effect of milking intervals on the functional properties of the udder of cows in automatic milking systems. Thousand eight milking recordings were enrolled in the study, in total, 106 Holstein cows were observed. The results of studies showed that at a daily milk yield per cow of 22.0 ± 0.6 (means ± SD) kg, the milking frequency was 2 times (13.5 % of the total number of milkings), 32.7 ± 0.4 kg – 3 times (57.2 %), 37.7 ± 0.6 kg – 4 times (28.0 %), 51.3 ± 4.1 kg –

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Kiselev, L. Yu, R. A. Kamalov, M. Yu Borisov, N. A. Fedoseeva, and Z. S. Sanova. "Modern technologies of robotized cowing milk." Rossiiskaia selskokhoziaistvennaia nauka, no. 3 (June 24, 2019): 54–57. http://dx.doi.org/10.31857/s2500-26272019354-57.

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The studies were conducted in the conditions of LLC “Milk Group” of Sukhinichsky district of Kaluga region. The object of research is robotic milking machines, Swedish breed cows and Danish red breeds. Equality of development of the front and rear lobes, the udder index, the average milk flow rate and the frequency of delivery can be achieved only with long-term selection by type, good severity of signs of milkiness. Based on the selection of cows for milking on a robotized milking plant, the following requirements were put forward: high milk productivity and milk yield, tightly attached udder

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Pettersson, Gunnar, Kerstin Svennersten-Sjaunja, and Christopher H. Knight. "Relationships between milking frequency, lactation persistency and milk yield in Swedish Red heifers and cows milked in a voluntary attendance automatic milking system." Journal of Dairy Research 78, no. 3 (2011): 379–84. http://dx.doi.org/10.1017/s0022029911000471.

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A large dataset comprising output from an automatic milking (AM) system between 1999 and 2006 was examined and a total of 172 cow lactation curves and 68 heifer lactation curves were identified for further analysis. Relationships between milking frequency at different stages of lactation and lactation persistency and total lactation yield were determined. Cows had higher peak and total milk yields than heifers, but heifers had higher persistency (defined as the rate of decline in milk yield between days 100 and 300 post calving). Milking frequency did not differ significantly between cows and

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8

Sitkowska, Beata, Dariusz Piwczyński, Magdalena Kolenda, and Jolanta Różańska-Zawieja. "The milking frequency of primiparous cows in their early stage of lactation and its impact on milking performance." Animal Production Science 60, no. 3 (2020): 436. http://dx.doi.org/10.1071/an18409.

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An automatic milking system allows cows to present their full production capability by not limiting them to a specific time when the milking occurs or a fix number of milkings per day. The beginning of the first lactation is a key point in terms of subsequent milk production. The aim of the present study was to indicate the relationship between the milking frequency of primiparous cows during the first month of lactation and their subsequent milk performance. Material of the study consisted of 25 Polish herds of Holstein–Friesian dairy cattle. All cows were milked with the use of an automatic

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9

Kuehnl, Jordan M., Meghan K. Connelly, Alen Dzidic, et al. "The effects of incomplete milking and increased milking frequency on milk production rate and milk composition1." Journal of Animal Science 97, no. 6 (2019): 2424–32. http://dx.doi.org/10.1093/jas/skz113.

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Abstract Increased milking frequency and incomplete milking have differential effects on milk yield and mammary gland physiology that are important for optimization of milking practices in dairy herds. The objectives of this experiment were to determine the effects of increased milking frequency and incomplete milking on milk production rate (MPR) and milk composition and to determine if milking 3 times daily (3×) could rescue the negative production effects of incomplete milking. Twenty-two multiparous cows were enrolled onto this experiment beginning at 5 days in milk (DIM) and continuing th

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Lopes, Marcos Aurélio, Tatiane Mendonça Nogueira, and Gastão Lemos Barbosa. "Economic viability of the third milking in systems of production using closed-circuit mechanical milking." Revista Ceres 61, no. 4 (2014): 544–51. http://dx.doi.org/10.1590/0034-737x201461040014.

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This study aimed to analyze the economic viability of the third milking in production systems using mechanical milking in a closed circuit, aiming to provide technicians and farmers with information to assist them in decision-making. Specifically, it intended: (a) to estimate the cost of one milking; (b) to estimate the cost of the third milking; (c) to develop a mathematical equation to estimate the minimum amount of milk produced with two milkings, from which it would be economically feasible to do the third milking. Data were collected from three dairy farms, from November 2010 to March 201

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Ferneborg, Sabine, Lucia Kovac, Kevin J. Shingfield, and Sigrid Agenäs. "Effect of increased milking frequency and residual milk removal on milk production and milk fatty acid composition in lactating cows." Journal of Dairy Research 84, no. 4 (2017): 453–63. http://dx.doi.org/10.1017/s0022029917000681.

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It has been well established that milk yield is affected both by milking frequency and due to the removal of residual milk, but the influence of a combination of these factors is unclear. In this study, four mid-lactation cows were used in a 4 × 4 Latin square design to test the hypothesis that the effects of more frequent milking and residual milk removal on milk yield and composition are additive and alter milk fatty acid composition. Treatments comprised two or four times daily milking in combination with (or without) residual milk removal over a 96 h interval preceded by a 2 d pretreatment

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KELLY, ALAN L., SUSAN REID, PATRICK JOYCE, WILLIAM J. MEANEY, and JOHN FOLEY. "Effect of decreased milking frequency of cows in late lactation on milk somatic cell count, polymorphonuclear leucocyte numbers, composition and proteolytic activity." Journal of Dairy Research 65, no. 3 (1998): 365–73. http://dx.doi.org/10.1017/s0022029998002921.

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The effects of reducing the frequency of milking of cows in late lactation on milk somatic cell count (SCC), polymorphonuclear leucocyte (PMN) content, chemical composition and proteolytic activity were investigated. Intermittent milking is frequently practised by Irish farmers in late lactation, and the objective of this study was to determine whether this procedure could be linked to altered quality of milk. Seventeen Holstein Friesian cows in late lactation (>215 d in milk) were assigned to two treatment groups, and were either milked twice a day until drying-off (control group) or milke

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13

Stelwagen, K., S. R. Davis, V. C. Farr, I. Politis, M. R. Guo, and P. S. Kindstedt. "Mammary-derived growth inhibitor in bovine milk: Effect of milking frequency and somatotropin administration." Canadian Journal of Animal Science 74, no. 4 (1994): 695–98. http://dx.doi.org/10.4141/cjas94-100.

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The effects of milking frequency and exogenous somatotropin on milk MDGI were investigated in cows. High levels of MDGI in milk were found during lactation; however, despite significant changes in milk yield, neither milking frequency nor somatotropin affected MDGI. The data do not support a role for MDGI in acute regulation of mammary synthetic ability. Key words: Milking frequency, somatotropin, MDGI, bovine, lactation, differentiation

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Hillerton, J. Eric, Christopher H. Knight, Alan Turvey, Stephen D. Wheatley, and Colin J. Wilde. "Milk yield and mammary function in dairy cows milked four times daily." Journal of Dairy Research 57, no. 3 (1990): 285–94. http://dx.doi.org/10.1017/s0022029900026935.

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SummaryGroups of lactating cows and heifers were milked four times daily in two diagonally opposed glands for 4 weeks, and the effects on milk yield studied relative to twice-daily milked glands as controls. Mammary enzyme activities, in vitro synthesis rates of milk constituents and histological scoring were determined in mammary biopsy samples obtained at the end of this period. These were used for assessment of mammary function. Frequent milking increased milk yield only in the treated glands, the contralateral control glands continuing to decline in yield at ~ 2%/week. There was no signifi

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Othmane, M. Houcine, and Latifa Trabelsi. "Suitability of simplified methods for monthly and twice-monthly milk recording, and new prediction factors for the alternate a.m./p.m. method in dairy ewes under a low-input production system." Journal of Dairy Research 74, no. 4 (2007): 399–405. http://dx.doi.org/10.1017/s0022029907002634.

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Sicilo-Sarde dairy flock test-day data were analysed (1) to check predicting ability of ten milk recording procedures, based on information from a single monthly or bimonthly milking and (2) to look for the best pair of factors for predicting daily milk yield from either morning or afternoon milkings for the alternate testing method (AT). Prior to analyses, data were adjusted for variation factors with known significant effect. Number of test-day observations was 4755 from 458 lactations of 288 ewes. Losses of precision associated with simplified methods were evaluated by comparing estimated l

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Firk, R., E. Stamer, W. Junge, and J. Krieter. "Systematic effects on activity, milk yield, milk flow rate and electrical conductivity." Archives Animal Breeding 45, no. 3 (2002): 213–22. http://dx.doi.org/10.5194/aab-45-213-2002.

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Abstract. The traits activity, milk yield, milk flow rate and electrical conductivity were analysed in preparation for automatic oestrus detection. Collection of data was performed on a commercial dairy farm and milking took place in a rotary milking parlour. Between February and December 1998 1,090,031 observations from 2,422 Holstein Friesian cows were accumulated. Around 30% of cows were milked thrice daily. For each trait and each cow a daily value was calculated. The fixed effects test day, parity, calving season, milking frequency, week of lactation and the random effect cow were conside

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Khisamov, R. R., L. R. Zagidullin, and R. R. Kayumov. "LACTIVE ACTIVITIES OF FIRST-CALF COWS USING ROBOTIC MILKING." Scientific Notes Kazan Bauman State Academy of Veterinary Medicine 246, no. 2 (2021): 256–61. http://dx.doi.org/10.31588/2413-4201-1883-246-2-256-261.

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Studies have been conducted to assess the lactation productivity of Kholmogory breed Tatarstan type first-calf cows with robotic milking systems. The frequency of milking distribution during the day was observed: in the interval of 4-6 hours, the minimum number of milking occurs (6.4 %), in the interval of 12-14 hours, the maximum number (10.7 %). Most milking (34.7 %) is carried out in 6-8 hours after the previous one. More frequent milking (after 4-6 hours) is rarely observed is in 6 % of cases. 48.6 % of milking occurs after the 8-12 hour interval. For an interval of more than 12 hours occu

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Aerts, Joanna, Dariusz Piwczyński, Heydar Ghiasi, Beata Sitkowska, Magdalena Kolenda, and Hasan Önder. "Genetic Parameters Estimation of Milking Traits in Polish Holstein-Friesians Based on Automatic Milking System Data." Animals 11, no. 7 (2021): 1943. http://dx.doi.org/10.3390/ani11071943.

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The automatic milking system (AMS) provides a large amount of information characterizing the course of each milking cow, which is not available in the conventional system. The aim of our study was to estimate heritability and genetic correlations for milk yield (MY), milking frequency (MF), and speed (MS) for 1713 Polish Holstein-Friesian primiparous cows milked in barns with an AMS. Daily heritability indicators estimated using second-order Legendre polynomials and Random Regression Models showed high variation during lactation, ranging 0.131–0.345 for MY, 0.153–0.322 for MF, and 0.336–0.493

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Faugno, Salvatore, Stefania Pindozzi, Collins Okello, and Maura Sannino. "Testing the application of an automatic milking system on buffalo (Bubalus bubalis)." Journal of Agricultural Engineering 46, no. 1 (2015): 13. http://dx.doi.org/10.4081/jae.2015.437.

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The automatic milking systems (AMS) have been deeply studied in dairy cows applications, but not in the case of buffaloes; although, a few applications to the species can be found in literature. The objective of this study is to compare some important functional aspects of AMS with the conventional milking systems. Aspects such as adaptation of buffalo to AMS and the possible relationship between milking frequency and daily milk yield were evaluated. Two groups of <em>Bubalus</em> <em>bubalis</em> were reared in the same barn, in a farm located in Piana del Sele (SA) so

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Talukder, S., P. Celi, K. L. Kerrisk, S. C. Garcia, and N. K. Dhand. "Factors affecting reproductive performance of dairy cows in a pasture-based, automatic milking system research farm: a retrospective, single-cohort study." Animal Production Science 55, no. 1 (2015): 31. http://dx.doi.org/10.1071/an13010.

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A retrospective, single-cohort study was conducted to identify production and health factors associated with reproductive performance in a pasture-based, automatic milking system research farm. The calving system of this herd shifted from split calving to year-round calving gradually during the study period. Data from 365 cows with 798 lactations were analysed. Reproductive outcome variables of interest were intervals from calving to first oestrus, to first insemination, and to conception, as well as number of inseminations per conception, probability of submission for insemination by 80 days

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Jago, Jenny G., Kendra L. Davis, Peter J. Copeman, and Murray M. Woolford. "The effect of pre-milking teat-brushing on milk processing time in an automated milking system." Journal of Dairy Research 73, no. 2 (2006): 187–92. http://dx.doi.org/10.1017/s002202990500155x.

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Cow throughput in an automatic milking system (AMS) is limited by system parameters such as the time required for pre-milking udder preparation and cup attachment, physiological responses of the cow (such as milk let-down and milking-out rate), milking machine features and cow behaviour. A single-factor cross-over design was used to investigate the effect of pre-milking teat brushing on milk processing time in an AMS operating in an extensive grazing farming system. Teat brushing consisted of two roller brushes tracking up each teat three times (total brushing time of up to 45 s/cow). Cows wer

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Torres, Alexandr, Lorenzo-Enrique Hernández-Castellano, Antonio Morales-delaNuez, et al. "Short-term effects of milking frequency on milk yield, milk composition, somatic cell count and milk protein profile in dairy goats." Journal of Dairy Research 81, no. 3 (2014): 275–79. http://dx.doi.org/10.1017/s0022029914000211.

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Goats in Canary Islands are milked once a day by tradition, but in most countries with high technology on farms, goats are milked twice a day, which is known to improve milk yield. Therefore it is important to know whether the increase of milking frequency can improve the production without impairing milk quality. The objective of this study was to investigate the short term effects of three milking frequencies on milk yield, milk composition, somatic cell count (SCC) and milk protein profile in dairy goats traditionally milked once a day. Twelve Majorera goats in early lactation (48±4 d in mi

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Stockdale, C. R. "Influence of milking frequency on the productivity of dairy cows." Australian Journal of Experimental Agriculture 46, no. 7 (2006): 965. http://dx.doi.org/10.1071/ea05308.

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Benefits and issues of changing milking frequency from the traditional twice a day are reviewed. Increased efficiency through dairy automation and mechanisation, and the desire to utilise advances in genetic selection, have made milking more frequently than twice a day an attractive option for some farmers. The size of the response to increased milking frequency appeared not to be related to existing milk yield, with the average response to increasing the frequency from 2 to 3 times a day being 3.5–3.8 kg/day. Labour is the single most important cost associated with the decision to increase mi

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Knight, Christopher H., and Richard J. Dewhurst. "Once daliy milking of dairy cows: relationship between yield loss and cisternal milk storage." Journal of Dairy Research 61, no. 4 (1994): 441–49. http://dx.doi.org/10.1017/s0022029900028363.

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SummaryThe proportions of milk stored in the gland cistern (cisternal) and within secretory alveolar tissue (alveolar) were determined for a group of ten cows in mid lactation, yielding ∼ 20 kg milk/d. As a proportion of total milk, cisternal milk, measured at 8 h after milking, ranged from 0·09 to 0·53. Milking frequency was then reduced from twice daily to once daily on two occasions, first for 1 week and then, 2 weeks later, for 2 weeks. Milk yield was reduced during once daily milking in all cows, by an average of 22·8% during the first week (P < 0·001). The amount of decrease varied am

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Løvendahl, P., and M. G. G. Chagunda. "Covariance among milking frequency, milk yield, and milk composition from automatically milked cows." Journal of Dairy Science 94, no. 11 (2011): 5381–92. http://dx.doi.org/10.3168/jds.2010-3589.

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STELWAGEN, KERST, and CHRISTOPHER H. KNIGHT. "Effect of unilateral once or twice daily milking of cows on milk yield and udder characteristics in early and late lactation." Journal of Dairy Research 64, no. 4 (1997): 487–94. http://dx.doi.org/10.1017/s0022029997002458.

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Twelve multiparous British Friesian cows in early (40±23 d in milk; n=6) or late (216±17 d in milk; n=6) lactation were used to study the effects of milking frequency on yield, udder volume and milk storage within the udder. After a 2 week control period of twice daily milking, diagonally opposed udder halves within a cow were milked once or twice daily for 3 weeks. Milk yield was 28–38% lower from the halves that were milked once daily than from halves that were milked twice daily. The loss of milk yield, expressed as a decrease in the relative milk yield quotient (an index that accounts for

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Migliorati, L., M. Speroni, S. Lolli, and F. Calza. "Effect of concentrate feeding on milking frequency and milk yield in an automatic milking system." Italian Journal of Animal Science 4, sup2 (2005): 221–23. http://dx.doi.org/10.4081/ijas.2005.2s.221.

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Krömker, Volker, Claudia Zinke, Jan-Hendrik Paduch, Doris Klocke, Anette Reimann, and Georg Eller. "Evaluation of increased milking frequency as an additional treatment for cows with clinical mastitis." Journal of Dairy Research 77, no. 1 (2009): 90–94. http://dx.doi.org/10.1017/s0022029909990422.

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This field study focused on the possible effects of increased milking frequency (milking four times a day in comparison with milking twice a day) on clinical and bacteriological cure rates of clinical, antibiotically treated mastitis cases. Parameters tested were clinical, microbiological and full (cytomicrobiological) cure as well as the development of milk yield after the clinical mastitis episode. Cows from a large dairy herd meeting the study criteria (n=93) were assigned to two treatment groups by a systematic randomization scheme (blocked by body temperature <=or >39·5°C). Both gro

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BRUCKMAIER, RUPERT M., GEORG PAUL, HARALD MAYER, and DIETER SCHAMS. "Machine milking of Ostfriesian and Lacaune dairy sheep: udder anatomy, milk ejection and milking characteristics." Journal of Dairy Research 64, no. 2 (1997): 163–72. http://dx.doi.org/10.1017/s0022029997002173.

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Mammary cistern anatomy derived from ultrasound measurement, milk ejection in response to exogenous oxytocin and oxytocin release and milking characteristics with and without manual prestimulation in early (months 2–4) and late (months 5–8) lactation were investigated in Lacaune and Ostfriesian dairy ewes. Vertical ultrasound cisternal cross sections of the cisternal cavities did not differ in the two breeds, whereas the cisternal area fraction located lower than the exit into the teat channel was larger in Ostfriesian than in Lacaune sheep. The cisternal area enlarged within 1 min in response

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Jago, Jenny G., Kendra L. Davis, Peter J. Copeman, Ian Ohnstad, and Murray M. Woolford. "Supplementary feeding at milking and minimum milking interval effects on cow traffic and milking performance in a pasture-based automatic milking system." Journal of Dairy Research 74, no. 4 (2007): 492–99. http://dx.doi.org/10.1017/s002202990700283x.

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In extensive pastoral dairy farming systems herds graze 12 months of the year with the majority fed a near-100% pasture or conserved pasture diet. The viability of automatic milking in these systems will depend partly upon the amount of supplementary feed necessary to encourage cows to walk from the pasture to the milking unit but also on the efficient use of the automatic milking system (AMS). This paper describes a study to determine the importance of offering concentrate in the milking unit and the effect of minimum milking interval on cow movement and milking performance in a pasture-based

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Hoffmann, Gundula, Wendy Liermann, Christian Ammon, and Sandra Rose-Meierhöfer. "Comparative study of behavioural and milking traits in cows milked with a conventional or individual quarter milking system (Multilactor®) and with different milking persons." Annals of Animal Science 17, no. 2 (2017): 529–44. http://dx.doi.org/10.1515/aoas-2016-0067.

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Abstract The aim of this study was to investigate the influence of a new type of milking system on the behaviour of cows during milking by comparing a conventional milking system (CON) with an individual quarter milking system (MUL), MultiLactor®. Sixty-eight dairy cows were observed during their milking times (32 cows in CON, 36 cows in MUL) using video recordings to analyse their behavioural traits. The udder preparation duration, milking duration and milk yield were also evaluated. No significant differences were found between the CON and the MUL regarding cows’ head posture (P=0.38), body

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Pala, A., and S. Sahin. "Effects of short period frequent milking on milk yield in two East Friesian crosses: Tahirova and Sonmez sheep." Archives Animal Breeding 54, no. 5 (2011): 515–24. http://dx.doi.org/10.5194/aab-54-515-2011.

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Abstract. Though East Friesian sheep are known to have very high milk yield, their various degree crosses may have different levels of milk yield under different conditions due to genotype × environment interaction. The major purpose of this study was to investigate whether increasing milking frequency for a short period (21 days) increases milk yield in two East Friesian crosses, Tahirova and Sonmez sheep. Tahirova is 75 % East Friesian and 25 % Kivircik, while Sonmez is 75 % Tahirova and 25 % Sakiz (Chios). Two milking groups were formed and were treated the same in terms of feeding and mana

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Knight, Christopher H. "Milk yield responses to sequential treatments with recombinant bovine somatotrophin and frequent milking in lactating goats." Journal of Dairy Research 59, no. 2 (1992): 115–22. http://dx.doi.org/10.1017/s0022029900030363.

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SummaryLactating goats routinely milked twice daily were used. Starting at peak lactation, two groups of five goats were milked three times daily unilaterally (right gland) for 6 weeks, then one group received recombinant bovine somatotrophin (BST) by daily injection for 6 weeks, and finally both groups were returned to unilateral thrice-daily milking (left gland) for 6 weeks. Thrice-daily milking increased milk yield significantly by 10·4%. As thrice-daily milking finished and BST treatment began there was a small (2·7%) but significant increase in whole-udder milk yield in the treated goats

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Kuczaj, Marian, Anna Mucha, Alicja Kowalczyk, Ryszard Mordak, and Ewa Czerniawska-Piątkowska. "Relationships between Selected Physiological Factors and Milking Parameters for Cows Using a Milking Robot." Animals 10, no. 11 (2020): 2063. http://dx.doi.org/10.3390/ani10112063.

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The aim of the study was to determine the effect of the number and stage of lactations, time of day and calving season of cows on milk yield from a single milking, average milking time, average milking per minute, daily milking frequency and the relationship between the tested parameters of quarter milking. The study included a herd of 65 Polish Holstein Friesian black and white cows used in a free-range barn located in south-west Poland. The animals were kept in proper welfare conditions, fed using the partly mixed ration (PMR) method on the feeding table. The milk was obtained using the Lely

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Knight, C. H., A. Sorensen, and D. D. Muir. "Non-nutritional (novel) techniques for manipulation of milk composition." BSAP Occasional Publication 25 (2000): 223–39. http://dx.doi.org/10.1017/s1463981500040838.

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AbstractThis review considers the control of milk composition by endocrine factors and local mechanisms operating within the udder, and the impact of management systems and the environment on these control systems. Much less is known about control of milk composition than yield, although one can propose that prolactin is more concerned with control of lactose and protein secretion whilst growth hormone has a bigger role to play in fat secretion. Molecular biological approaches have the potential to increase understanding and, in the distant but foreseeable future, to manipulate milk compositio

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Shields, Shannon L., Pedram Rezamand, Dallace L. Sevier, Keun S. Seo, William Price, and Mark A. McGuire. "Effects of increased milking frequency for the first 21 days post partum on selected measures of mammary gland health, milk yield and milk composition." Journal of Dairy Research 78, no. 3 (2011): 301–7. http://dx.doi.org/10.1017/s0022029911000410.

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Somatic cell count (SCC) is a widely used marker of udder health and a predictor of inflammation caused by an immune response. The objective of this study was to determine whether selected measures of mammary gland health as well as milk fatty acid profile were altered by an increase in milking frequency using a unilateral frequent milking (UFM) model. Holstein cows at parturition were assigned to UFM, in which the left udder half of each cow was milked four-times daily (4X) and the right udder half was milked twice daily (2X) for the first 21 days in milk (DIM). Milk yields from each udder ha

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Simitzis, Panagiotis, Ilias Seferlis, Michael Goliomytis, Iosif Bizelis, and Ioannis Politis. "Handling and milking frequency affect milk yield and behavior in dairy ewes." Small Ruminant Research 198 (May 2021): 106351. http://dx.doi.org/10.1016/j.smallrumres.2021.106351.

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Margerison, J. K., and C. J. C. Phillips. "The effect of suckling following mechanical milking on milk yield, milk composition and somatic cell count in dairy cattle." BSAP Occasional Publication 25 (2000): 175–77. http://dx.doi.org/10.1017/s1463981500040802.

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AbstractSuckling following mechanical milking is common practice in organic dairy production systems and in developing countries. The objective of the experimental work was to assess the effect of suckling and suckling frequency following mechanical milking on milk yield, milk composition and somatic cell count. Two experiments were completed using multiparous dairy cows allocated at 3 days post partum to their respective treatment groups. In experiment one, twenty–four multiparous dairy cows were allocated to one of two treatments for 305 days; 12 cows not suckled (NS) and 12 cows, which were

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Hjalmarsson, Fanny, Ingemar Olsson, Sabine Ferneborg, Sigrid Agenäs, and Emma Ternman. "Effect of low light intensity at night on cow traffic in automatic milking systems." Animal Production Science 54, no. 10 (2014): 1784. http://dx.doi.org/10.1071/an14215.

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Several studies have shown benefits of long-day (16 h) photoperiod in lactating dairy cows, but have not identified a suitable light intensity for the dark hours. It is known that the locomotion pattern of dairy cows is altered at low light intensities and this may translate to reduced cow traffic and milking frequency, which would have a negative impact on system productivity. However, it is also recognised that a significant disturbance of rest may have a negative impact on the health and productivity of high-yielding dairy cows. This study examined the effect of three different night-time l

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Prosser, C. G., and S. R. Davis. "Milking frequency alters the milk yield and mammary blood flow response to intra-mammary infusion of insulin-like growth factor-I in the goat." Journal of Endocrinology 135, no. 2 (1992): 311–16. http://dx.doi.org/10.1677/joe.0.1350311.

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ABSTRACT The milk yield and mammary blood flow responses to close-arterial, intra-mammary infusion of IGF-I were investigated in five Saanen goats milked frequently or normally the day before. Animals were infused for 6 h with recombinant human IGF-I (1·3 nmol/min) and milked hourly following i.v. injection of oxytocin beginning 2 h before infusion and then every 2 h. On one occasion animals were milked five times (after i.v. injection of oxytocin) on the day before infusion and on the other they were milked twice, without oxytocin. The ratio of milk yield from the infused to that from non-inf

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Mačuhová, L., M. Uhrinčať, J. Mačuhová, M. Margetín, and V. Tančin. "The first observation of milkability of the sheep breeds Tsigai, Improved Valachian and their crosses with Lacaune." Czech Journal of Animal Science 53, No. 12 (2008): 528–36. http://dx.doi.org/10.17221/369-cjas.

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The aim of this study was to evaluate the milkability of two purebred breeds Tsigai (TS, <i>n</i> = 14) and Improved Valachian (IV, <i>n</i> = 15), their crosses with Lacaune 50% TS × 50% LC (<i>n</i> = 13), 50% IV × 50% LC (<i>n</i> = 9) and purebred Lacaune (LC, <i>n</i> = 19). The measurements of the milk flow were performed on day 90 ± 10 of lactation during evening machine milking. The recording of milk flow was carried out by the equipment for graduated electronic recording of milk level in a jar in one-second intervals. The mil

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Dewhurst, R. J., and C. H. Knight. "The response to thrice-daily milking and its relationship to cisternal storage capacity in dairy cows." Proceedings of the British Society of Animal Production (1972) 1992 (March 1992): 37. http://dx.doi.org/10.1017/s0308229600021619.

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Recently there has been increased interest in the effects of changing the milking frequency of dairy cows because of the possibilities of either increased milking frequency, through the use of robot-milkers or of once-daily milking as a part of a programme of extensification. Archer (1983), reviewing the literature and data from herds monitored by Farm Management Services, found milk yield responses on changing from twice- to thrice-daily milking from -0.14 to +0.49. These differences represent large between-animal differences in responses to thrice-daily milking and there is a need to identif

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Simpkin, S. P., and P. Rowlinson. "Studies on milk yield and calf suckling behaviour in Kenyan camels (Camelus dromedarius)." Proceedings of the British Society of Animal Science 1996 (March 1996): 105. http://dx.doi.org/10.1017/s0308229600030737.

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Estimates of camel lactation yields in the literature vary from less than 1000kg to more than 12000 kg, with mean daily yields from 0.1 to 35kg (Simpkin 1985). Suckling or milking frequency and strength of the milk letdown reflex are just two of many factors that affect milk secretion rate in camels. Most of the 18 million camels in the world are kept in nomadic pastoral herds where estimation of milk yield is particularly difficult and the large variation in reported camel milk yields could be attributed to the methodology used to estimate yields. A literature survey shows most articles are b

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Sharipov, Delyus, Oleg Yakimov, Firaya Akhmetzyanova, and Ildar Galimullin. "Features of concentrate feeding in an automatic milking system with free cow traffic." BIO Web of Conferences 27 (2020): 00010. http://dx.doi.org/10.1051/bioconf/20202700010.

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The objective of this research was to study the main factors influencing the consumption of concentrate depending on the daily milk yield in an automatic milking system (AMS) with free cow traffic. The researchers obtained data by visiting AMS from 227 lactating Holstein dairy cows for 30 days. For a more complete characterization of milking activity and feeding concentrate during milking in the AMS, the cows were divided into 6 groups: with a milk yield less than 20.0 kg, 20.1–25.0, 25.1–30.0, 30.1–35.0, 35.1–40.0 and more than 40.1 kg per day. With an increase in milk production, the allocat

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Stanek, Piotr, Waldemar Teter, Paweł Żółkiewski, Ewa Januś, and Urszula Zając. "Analysis of the milk yield and milking frequency of Polish Black-and-White Holstein-Friesian cows housed in a barn with an automatic milking system (AMS)." Acta Scientiarum Polonorum Zootechnica 16, no. 3 (2017): 19–24. http://dx.doi.org/10.21005/asp.2017.16.3.03.

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Correa-Luna, Martín, Daniel Donaghy, Peter Kemp, et al. "Productivity, Profitability and Nitrogen Utilisation Efficiency of Two Pasture-Based Milk Production Systems Differing in the Milking Frequency and Feeding Level." Sustainability 13, no. 4 (2021): 2098. http://dx.doi.org/10.3390/su13042098.

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The aim of this study was to model the productivity, profitability and the nitrogen (N) utilisation efficiency (NUE) of two spring-calving pasture-based milk production systems differing in milking frequency and intensification levels in New Zealand. For this purpose, physical performance data from a low-intensity production system where cows were milked once per day (OAD-LI) and from a high-intensity production system where cows were milked twice per day (TAD-HI) were employed. OAD-LI cows were milked once-daily with a stocking rate (SR) of 2.1 cows/ha and fed diets with low supplementation (

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Lemcke, Marie-Christine, Asja Ebinghaus, and Ute Knierim. "Impact of Music Played in an Automatic Milking System on Cows’ Milk Yield and Behavior—A Pilot Study." Dairy 2, no. 1 (2021): 73–78. http://dx.doi.org/10.3390/dairy2010007.

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Practical experience suggests that music can have a positive effect on the welfare of dairy cows, which for some other animal species has been shown in earlier studies. Music could, furthermore, be a useful tool to support, for example, daily milking routines. In this pilot study we explored effects of music inside an automatic milking system (AMS) on cows’ milk yield and behavior. The experiment was conducted on a Finnish dairy farm with 56 cows in loose housing. Over two 2-day periods without and with selected music pieces played inside the AMS, data on daily milk yield (DMY), selection gate

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Van Der Iest, Renee, and J. Eric Hillerton. "Short-term effects of frequent milking of dairy cows." Journal of Dairy Research 56, no. 4 (1989): 587–92. http://dx.doi.org/10.1017/s0022029900029101.

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SummaryWhen six cows were milked every 4 h over 48 h the average milk yield per cow increased by 1O·7% for the last 24 h period compared with the previous 5 d. Milk composition was similar to pre-experimental values although fat content was 0·5% lower in the last 24 h. The somatic cell count rose to twice the pre-experimental value over the first 24 h but was not significantly different by the second 24 h. It appears that cows responded quickly to an increased frequency of milking and milk of an acceptable composition was produced. This has implications for management of milk production where

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Bayram, Ercan, and Savaş Atasever. "Factors Affecting Milk Production in Anatolian Buffalo Herds in Samsun Province of Turkey." Turkish Journal of Agriculture - Food Science and Technology 8, no. 6 (2020): 1369–72. http://dx.doi.org/10.24925/turjaf.v8i6.1369-1372.3376.

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The aim of this study was to determine the relations of some affecting factors with milk production in Anatolian buffalo enterprises in Samsun province, Turkey. The questionnaires were applied by interviews to thirty nine buffalo farmers those selected by random sampling method. Effects of experience (EF) and education level (EL) of farmer, number of milking animal (NM), concentrate feeding application (CF), weaning period (WP), milking frequency per day (MP), udder disinfection premilking (UDP) on daily milk yield (DMY) were found to be insignificant. Further studies including more factors an

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ANDRÉ, G., B. ENGEL, P. B. M. BERENTSEN, G. VAN DUINKERKEN, and A. G. J. M. OUDE LANSINK. "Adaptive models for online estimation of individual milk yield response to concentrate intake and milking interval length of dairy cows." Journal of Agricultural Science 149, no. 6 (2011): 769–81. http://dx.doi.org/10.1017/s0021859611000311.

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SUMMARYAutomated feeding and milking of dairy cows enables the application of individual cow settings for concentrate supply and milking frequency. Currently, general settings are used, based on knowledge about energy and nutrient requirements in relation to milk production at the group level. Individual settings, based on the actual individual response in milk yield, have the potential for a marked increase in economic profits. In the present study, adaptive dynamic models for online estimation of milk yield response to concentrate intake and length of milking interval are evaluated. The para

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