Comparative assessment of feed preparation technologies for Ukrainian breeds of dairy cows

Shablia, V. P.

doi:10.17523/bia.2018.v75.e1424

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…For evaluation of methods of manure removing, we used the approaches developed for ergonomic estimation of feed preparation and distribution technologies (SHABLIA, 2018). Ergonomic studies have been conducted taking into account the means of production in the workplace, management bodies, ergonomic parameters of the workplace, which are subject to measurement and further analysis, according to methodological recommendations (SHABLIA, 2014).…”

Section: Methodsmentioning

confidence: 99%

Machine and manual working actions for different manure removing technologies

Shablia¹,

Tkachova²

2020

Bol. Ind. Anim.

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Technologies for the removal of manure from cowsheds and paddocks have been investigated by video recording with the following timing and estimation of absolute and specific costs of working actions, time and resources. The comparative estimation of different technologies for manure removing was performed: by delta-scraper equipment from a manure passage; by wheeled tractor with a bulldozer attachment from a manure passage; by bulldozer from a cowshed for housing on deep litter; by wheeled tractor with frontal loader attachment from a cowshed for housing on deep litter; by perimeter gutter cleaner in tie-stall cowshed; by bulldozer from the big paddock outdoor; manually from small paddock with replaceable litter in a cowshed on a pile near the feed passage. It was established that the influences of the method of manure removing on the specific costs of working actions, time and resources per 1 centner of removed manure are significant (p<0.001 for the vast majority of these final characteristics) The measures of influence Î·2 are within the range from 0.279 to 0.789. The mechanized removing of manure from the manure passage using a delta-scraper in the cowshed with free-stall housing is the most ergonomical among the methods studied. This equipment works at least semi-automatic and performs on average only 0.92 working actions with a duration of 155.1 s for the removing of 1 centner of manure, which worth around 1.08 UAH. Its functioning is characterized by a complete lack of working actions of adaptive type, while the remaining methods of manure removing require at least a quarter of such hard-to-perform and long actions. The accompanying manual labor actions of the personnel for cleaning of boxes from manure at manure removing by a delta scraper or a tractor with a bulldozer attachment are 10.33 labor actions with a total duration of 12.44 s per 1 cow per day. The removal of manure by the perimeter gutter cleaner has the worst (except the fully manual method) ratio between the number of mechanized and manual working actions €“ 558 manual actions per each machine action.

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Section: Methodsmentioning

confidence: 99%

Machine and manual working actions for different manure removing technologies

Shablia¹,

Tkachova²

2020

Bol. Ind. Anim.

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“…Breeding indexes mostly include the most significant indicators of productivity, reproductive capacity, technological, genomic and other characteristics of animals in a certain ratio in the way that it is convenient to achieve breeding goals with their help [12][13][14][15][16][17][18].…”

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Significance of breeding value indicators for prediction of milk yield

Чалий¹,

Danilova²,

Zadorozhna

et al. 2022

Tehnologìâ virobnictva ì pererobki produktìv tvarinnictva

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A comparative assessment of the significance of various indicators of the breeding value of breeding bulls for predicting milk yield in the highly productive herd of the farm economy "Alfa" was carried out. The milk yield of cows, whose bulls-fathers were evaluated in Ukraine and abroad, was studied. It was established that in the period from 2009 to 2014, the milk yield of first-calf heifers increased by 23.9 % and reached 5894.3 kg. Accordingly, during the specified period, most of the quantitative indicators of the breeding value and milk productivity of the bulls' daughters also increased: the breeding value of the parent bulls in terms of milk yield increased from +245.3 kg in 2009 to +540.4 kg in 2014; the breeding value of parent bulls in terms of the total amount of milk fat per lactation increased from +10.2 kg to +29.7 kg. A correlation analysis of the relationships between various indicators of breeding value of parent bulls and the milk yield of their daughters was carried out. It was established that the actual milk yield of first-calf heifers in FE "Alfa" most (correlation coefficients r higher than 0.8) and most significantly (p<0.001) depended on the average milk yield and amount of milk fat yield of bull's daughters in the herds where the breeding value of these bulls was evaluated. The breeding value of the sire bulls by the amount of milk fat yield was also characterized by high (r=0.675) and significant (p<0.01) relationship with the actual milk yield of the first-calf heifers (daughters of these sires). The variance analysis of the influence of the breeding value estimation method of breeder bulls (BV, ETA, ZW, DRV, RPC) on the actual milk yield of their daughters during the first lactation established that this influence was significant (p=0.001), and the power of influence was η2=0,59. Significant differences were mostly observed between milk yields of first-calf heifers whose parent bulls were evaluated abroad and in Ukraine. The biggest difference in terms of actual milk yield was revealed between the daughters of bulls evaluated by the ETA method (Canada) and by the "daughter-of-the-same-age (DRV)" method (Ukraine). This difference was 2640 kg of milk (p<0.01) in favor of firstcalf heifers from Canadian bulls. Key words: breeding bulls, breeding value, milk productivity, daughters of bulls, milk yield, selection index, evaluation method.

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Comparative assessment of feed preparation technologies for Ukrainian breeds of dairy cows

Cited by 2 publications

References 7 publications

Machine and manual working actions for different manure removing technologies

Machine and manual working actions for different manure removing technologies

Significance of breeding value indicators for prediction of milk yield

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