RU2684597C1 - Method for detecting quickly and slowly milked cows in a herd during milking on a robotic installation - Google Patents

Abstract

FIELD: agriculture.SUBSTANCE: invention relates to agriculture, in particular, to detection of quickly and slowly milked cows in a herd during milking on a robotic installation. Intensity of lactation is determined. Quickly and slowly milked cows are determined by the value of the latent period of bringing out the first portion of milk. Quickly milked ones are those animals whose latency period of the first portion of milk production is equal to 12.4±0.3 s.EFFECT: simplified process of quickly and slowly milked cows detection in herd.1 cl

Description

The invention relates to the field of agriculture, mainly to livestock and can be used to assess the individual intensity of milk production of cows issued on a robotic installation.

A known method for determining the individual intensity of milk excretion in heifers on a set of indicators, which also includes the duration of the milking period and the maximum intensity of milk excretion (Roets E., Vandeputte-Van Messom G., Peeters G. Relationship between Milkability and Adrenoceptor Concentration in Teat Tissue in Primiparous Cows // J. of Dairy Sci. - 1986. - Vol.69. - No. 12. - P. 3120-3130). The authors identified 5 types of heifers depending on the individual intensity of milk production. In type 1 cows, the duration of milking ranged from 1.8 to 3.5 minutes, and the maximum intensity of lactation was from 3.3 to 3.6 kg / min. In cows of the following types, the duration of milking increased and the value of the maximum intensity of milk elimination decreased. In type 5 cows, the milking duration ranged from 7 to 10 minutes, and the maximum intensity of lactation was from 0.9 to 1.6 kg / min. For a more accurate differentiation of animals, the authors, in addition to the duration of milking and the maximum intensity of milk production, used the following additional parameters of milk production: the average intensity of milk production, the duration of the period to reach the maximum intensity of milk production.

The disadvantages of this method:

- to assess the individual intensity of milk removal, a complex of parameters of milk removal is used, which greatly complicates the process.

- the value of the studied parameters of milk excretion is fixed only at the end of the milking process.

- in addition, the quality and duration of the preliminary preparation of the udder affects the duration of milking.

Closest to the invention in terms of essential features is a method for determining the individual intensity of milk excretion in cows by the value of the maximum intensity of milk excretion (Tancin, V. Sources of Variation in Milk Flow Characteristics at Udder and Quarter Levels / V. Tancin, B. Ipema, P. Hogewerf , I. Macuhova // J. of Dairy Sci. - 2006. - Vol. 89. - No. 3. - P. 978-988.). The authors identified three groups of cows, depending on the individual intensity of milk production. In cows of the first group (with a high ability to give milk), the maximum intensity of milk excretion exceeded 4.2 kg / min. In cows of the second group (with an average ability to give milk), the maximum intensity of milk excretion ranged from 3.2 to 4.2 kg / min. In cows of the third group (with low ability to give milk), the maximum intensity of milk excretion was less than 3.2 kg / min.

The main disadvantage of this solution is the length of the process of determining the individual intensity of milk excretion in cows.

From the analysis of the existing level of technology it was revealed that the technical problem in this area, not solved in the presented analogues, is the duration of the process of determining the individual intensity of milk excretion in cows, which affects the accuracy of the assessment.

The technical result provided by the proposed technical solution is to reduce the time to identify in the herd of quickly and slowly issued animals, as well as simplifying the method.

To achieve the technical result indicated in the method for detecting quickly and slowly issued cows in a herd during milking in a robotic installation that includes determining the intensity of milk excretion, while quickly and slowly issued cows are determined by the latency of the first portion of milk being excreted, and those animals in which the latent period of the excretion of the first portion of milk is 12.4 ± 0.3 seconds, recorded during milking on a robotic installation.

Examples of specific performance of the method.

The experiment was conducted in the SEC “Rus” of the Khvastovichsky district, Kaluga region on the cows of the first calving in the first half of lactation. The animals were kept on the farm loose and stood out on the Astronaut A4 robotic installation by Lely (Netherlands). During milking, the following parameters were recorded: the value of a single milk yield (kg), the latent period of elimination of the first portion of milk from each quarter of the udder (s), the duration of milk excretion from each quarter (min and s), and the maximum intensity of milk excretion (kg / min). For each cow, milking data was taken into account, at which the value of a single milk yield was 7-7.5 kg. Based on the parameters of each quarter, the average latent period of the excretion of the first portion of milk and the duration of milk excretion from the entire udder were determined. Two groups of cows were allocated depending on the average duration of milk removal from the udder. Group I consisted of fast-feeding cows. The duration of milk excretion in them ranged from 105 to 213 seconds. Group II included slow-feeding cows. The duration of milk excretion in them ranged from 228 to 405 seconds. For each group, the following was calculated: the duration of the latent period of excretion of the first portion of milk, the maximum intensity of milk excretion, the duration of milk excretion. The significance of differences between groups was evaluated using Student's t-test. The results of the experiment. In quickly issued cows, the studied parameters averaged: the duration of milk excretion was 164 ± 6 seconds, the maximum intensity of milk excretion was 3.2 ± 0.1 kg / min, the latent period of the first milk portion was 12.4 ± 0.3 seconds.

In slowly issued cows, the studied parameters averaged: the duration of milk excretion was 296 ± 11 seconds, the maximum intensity of milk excretion was 1.9 ± 0.1 kg / min, the latent period of excretion of the first portion of milk was 22.6 ± 1.2 seconds. The studied parameters of quickly and slowly issued cows significantly differed (P <0.001). The results indicate that quickly dispensed cows, in contrast to slowly dispensed cows, are characterized not only by a short milking time and a high maximum intensity of milk removal, but also by a shorter latent period of breeding the first portion of milk. A high level of correlation between the value of the latent period of excretion of the first portion of milk and these two indicators was established. The correlation coefficient between the duration of lactation and the latent period of excretion of the first portion of milk was +0.92 (P <0.001). The correlation coefficient between the maximum intensity of milk excretion and the latent period of excretion of the first portion of milk was -0.75 (P <0.01). The data presented indicate that the individual intensity of milk excretion of cows dispensed in a robotic installation can be estimated by the latent period of excretion of the first portion of milk.

Using the proposed method will simplify and speed up the process of identifying quickly and slowly issued cows in a herd, since only one milk production parameter is recorded - the value of the latent period of milk production, which becomes known already at the beginning of milking, and the proposed invention will allow assessment of animals regardless of the method conducting preliminary preparation of the udder.

Claims (1)

A method for detecting quickly and slowly issued cows in a herd when milking on a robotic installation, including determining the intensity of milk production, characterized in that the quickly and slowly issued cows are determined by the latency of the first portion of milk and the animals that have a latent period are quickly issued excretion of the first portion of milk is 12.4 ± 0.3 s.