Methods for estimation of daily and lactation milk yields from alternative milk recording scheme in Holstein and Simmental cattle breeds

Gantner, Vesna; Jovanovac, Sonja; Klopc̆ic̆, M.; Cassandro, Martino; Raguž, Nikola; Kuterovac, Krešimir

doi:10.4081/ijas.2009.519

Cited by 9 publications

(12 citation statements)

References 20 publications

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“…As far as the average values of I: Share of evening and morning milk yields in the total daily milk production of dairy cows with diff erent milk performance. Milking the above milk parameters and their variability are concerned, our results correspond with results published by , CHLÁDEK et al, (2009 a, b), andGANTNER et al, (2009). This means that our experimental groups of dairy cows showed standard average values and variability of all monitored milk parameters.…”

Section: Resultssupporting

confidence: 92%

“…High values of correlation coeffi cients for the same relationship (i.e. 0.89 to 0.98 and/or 0.956 to 0.976) were reported also by GANTNER et al, (2009) andJOVANOVAC et al, (2009). Besides, GANTNER et al, (2009) mentioned that the 305 day milk yield predicted from 4-week milk recording methods (A4, AT4) and from 6-week milk recording methods (A6, AT6) were statistically highly signifi cantly diff erent (P < 0.01).…”

Section: Resultsmentioning

confidence: 61%

“…Slightly lower percentages were recorded by OUWELTJES (1998) in his experiment with the milking interval of 10:14 hours in dairy cows with the average daily milk production of 24.7 kg (57 % and 43 % in the morning and evening milking, respectively). GANTNER et al (2009), as well, observed slightly lower partial milk yields in their experiment with 668 dairy cows milked twice a day in the interval of 12.8 and 11.2 hours between the morning and the evening milking, namely 53 % (10.6 kg) and 47 % (9.4 kg), respectively, of the total daily milk yield in of 20 kg. On the other hand, JOVANOVAC et al (2008) obtained nearly identical results (56.1 % and 43.8 % for the morning and evening milking, respectively); however, in their experiment the average milk performance was slightly lower (19.78 kg) at the interval of 13.6 and 11.4 hours between the morning and the evening milking, respectively.…”

Section: Resultsmentioning

confidence: 85%

“…JOVANOVAC et al (2008) observed a similar tendency; for equations derived from the morning partial milk yield these authors reported the range of coeffi cients of determination 0.957 to 0.976 while for the evening milking these coeffi cients ranged only from 0.937 to 0.956. Also GANTNER et al (2009) wrote that, in general, the estimates based on morning records were more accurate than those based on evening samples regardless to the method of estimation.…”

Section: Resultsmentioning

confidence: 99%

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Asymmetric time interval between evening and morning milking and its effect on the total daily milk yield

Chládek¹,

Hanuš²,

Falta³

et al. 2014

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Samples of milk obtained in the course of evening and morning milking performed in variable time intervals of either 11 and 13 hours (n = 1.282) or 10 and 14 hours (n = 370) were collected with the aim to quantify the effect of the length of a variable (asymmetric) time interval between evening and morning milking on the total amount and composition of daily milk production of dairy cows. Milk samples were analysed in an accredited (EN ISO 17025) laboratory in Brno-Tuřany (Czech Republic) and the following contents of individual milk components were estimated: fat (F; g.100g−1), total protein (TP; g.100g−1), lactose (L; lactose monohydrate; g.100g−1), and somatic cell counts (SCC; 103.ml−1) were estimated in. It was found out that with the increasing total daily milk production the shares of evening and morning milk yield increased as well; however, the percentages of evening and/or morning yields in the total yield remained practically unchanged and represented 43.5 % and 56.5% or 40.4 % and 59.6 % in variants with intervals of 11 and 13 hours and/or 10 and 14 hours, respectively. In the variant with the milking interval of 11 and 13 hours, values of correlation coefficients between the above parameters (i.e. F, TP, L, SCC, and log SCC) of evening and morning milk yields on the one hand and the total milk performance on the other ranged from the minimum r = 0.896 (F) to the maximum r = 0.980 (TP). In the variant with the interval of 10 and 14 hours, the corresponding values of correlation coefficients were r = 0.848 (F) and r = 0.983 (TP). These correlations were statistically highly significant in all cases (P ≤ 0.001). Further, linear regression equations enabling the estimation of milk parameters of the total milk yield on the base of results obtained in evening and morning milking was calculated as well. Values of coefficients of determination (R2) of these equations ranged from 0.803 (F) to 0.960 (TP) and from 0.718 (F) to 0.966 (TP) for intervals of 11:13 hours and of 10:14 hours, respectively.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 61%

Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Asymmetric time interval between evening and morning milking and its effect on the total daily milk yield

Chládek¹,

Hanuš²,

Falta³

et al. 2014

Acta Univ. Agric. Silvic. Mendelianae Brun.

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“…Many authors were interested in estimations of the total milk yield results and conversions from various sub-options of sampling during milking from methodical point of view (Lee and Wardorp, 1984;Palmer et al, 1994;Lee et al, 1995;Liu et al, 2000;Klopčič et al, 2003;Gantner et al, 2008Gantner et al, , 2009Hanuš et al, 2011Hanuš et al, , 2012. Multiple daily milking can include regular and irregular intervals, which are o en an essential part of the technology process in automated milking systems (Galesloot and Peeters, 2000;Bouloc et al, 2002;Bünger et al, 2002;Lazenby et al, 2002;Amodeo and Tondo, 2006;ICAR, 2008ICAR, , 2010Chládek et al, 2009 a, b).…”

Section: Milk Recording (Mr)mentioning

confidence: 99%

Reliability of Milk Recording Data Under Conditions of Automatic Milking System

Hanuš¹,

Hering²,

Chládek³

et al. 2014

Acta Univ. Agric. Silvic. Mendelianae Brun.

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Automatic milking system (AMS) brings a change in approach to ensure the data reliability in the offi cial milk recording (MR). The AMS is equipped with fl owmeter. AMS so ware provides the daily milk yield (DMY) and average of the last 7 daily milk yields (AVG7) for MR. Classic MR uses DMY. AVG7 could be more reliable value. Origin of both records (DMY and AVG7) is from AMS fl owmeter. The aim of paper was to compare the values of milk yield of cows from daily (DMY) and the extended records (AVG7) from AMS for objective assess of lactations to be used in cattle breeding. Study (2013) with 2 AMS herds (DeLaval and Lely Astronaut): herd 1 -Holstein (H) dairy cows; herd 2 -Czech Fleckvieh (CF) dairy cows. There were following milk records: n = 521 DeLaval (H); n = 567 Lely Astronaut (CF); 70 (H) and 68 (CF) dairy cows. MR samples were analyzed on: fat content; crude protein; somatic cell count. Correlations between AVG7 and DMY were: 0.888 (H); 0.898 (CF, both P ≤ 0.001). There were insignifi cant diff erences (P > 0.05; −0.07 ± 3.29 kg for H and 0.28 ± 3.3 kg for CF) between AVG7 and DMY for both robots. The same is valid for diff erences in the production of milk components. According to this comparison experiment the AVG7 of AMS is a suitable equivalent for the DMY regarding offi cial MR for assessment of lactations.

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Estimation of daily milk yield of Nellore cows grazing tropical pastures

Almeida

Marcondes

Rennó

et al. 2018

Trop Anim Health Prod

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Beef cows' milk yield is typically determined by measuring milk yield once daily and then doubling this value to estimate daily production. However, it is not known whether this is accurate. Thus, we aimed to determine the association between morning and afternoon milk yield in grazing Nellore cows. Eighty Nellore cows were used, with initial weight of 516.0 ± 1.0 kg. The experiment was a completely randomized factorial scheme, with 20 replications and four treatments (i.e., + or - pre-partum supplementation in combination with + or - post-partum supplementation): PRMM-1 kg of supplement/cow/day for 90 days pre-partum; MMPS-1 kg of supplement/cow/day for 90 days post-partum; PRPS-1 kg of supplement/cow/day for 90 days pre-partum and 90 days post-partum; and MM-only mineral mix ad libitum during pre- and post-partum. Milk was sampled on days 45, 135, and 225 post-partum (early, middle, and late lactation, respectively). No effects were observed of pre- and post-partum supplementation on milk yield (P > 0.05). The afternoon/morning proportion of 0.45 in the early third of lactation was higher than other stages, which had a proportion of 0.41 (P < 0.05). Post-partum supplementation increased milk protein in the morning and afternoon milking (P < 0.05). There was also no effect of pre- and post-partum supplementation on afternoon-morning proportion other milk components (P> 0.05). We conclude that estimating daily milk production of grazing beef cattle by multiplying a once daily milking amount times two is not accurate. Under the conditions of this study, proportion of total daily production represented by the ratio of afternoon/morning milking was 0.45 in early lactation (first third) and 0.41 in mid- and late lactation.

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Methods for estimation of daily and lactation milk yields from alternative milk recording scheme in Holstein and Simmental cattle breeds

Cited by 9 publications

References 20 publications

Asymmetric time interval between evening and morning milking and its effect on the total daily milk yield

Asymmetric time interval between evening and morning milking and its effect on the total daily milk yield

Reliability of Milk Recording Data Under Conditions of Automatic Milking System

Estimation of daily milk yield of Nellore cows grazing tropical pastures

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