The correlative dependence of sires gametogenesis on heliophysical factors

УДК 636.2.082.12

 There has been identified the bulls with the maximum ejaculate volume

belonging to the line Montvik Chieftain 95679, exceeding by 23,5% on this parameter

bulls of the Simmental lines. The bulls of different genotypes show a reliable negative

correlation in the main signs of sperm production with cosmophysical indicators of solar

and geomagnetic activity. The Raphael’s 3111 lines bulls have been more sensitive to

the learned factors of cosmic influence than Bravo’s 6802 line bulls. Among the Holstein

lines the most stable bulls in gametogenesis have been the Montvik Chieftain 95679.

The leastest tolerance have the S.T. Rockit’s 252803 lines bulls. The generative activity

of bulls significantly has decreased with the increasing of the geomagnetic disturbance.

Comparative productivity evaluation of meadow clover (trifolium pratense l.) different varieties in the Vologda region

УДК 633.321

It was found that the highest hay yield compared to the standard Trio

variety was observed in the Taezhnik variety (105.3 C/ha) in the conditions of the

Vologda region on sod-podzolic medium loamy soil for 2017-2019. The variety to

control provided a significant increase in yield of 15.9 C / ha (18%). The Allure variety

showed a significantly lower yield compared to the standard (17 C / ha, i.e.19%). The

rest of the studied Ranniy-2 and Roseta varieties provided the yield at the standard

level. The tested varieties of meadow clover showed good and almost excellent winter

hardiness which is 4-4.7 points. The content of “raw” protein exceeded the control

grade of Ranniy-2 (by 1.2%), Taezhnik (by 0.9%), Allure (by 0.5%). For the collection

of “raw” protein with a yield of green mass, the Allure and Roseta varieties were inferior

to the standard by 153 and 11 kg / ha. Ranniy- 2 and Taezhnik varieties provided the

collection of “raw” protein with a green mass yield of 1155 and 1245 kg/ha, respectively,

exceeding the standard by 173 and 263 kg / ha. The average and large correlation of

such indicators as the yield of clover varieties and plant height from r = 0.551 to r =

0.743 was revealed. A weak relationship was established between such indicators as

leafiness and yield (r = 0.434 – 0.525), yield and protein content (r = 0.451), protein

content in the green mass and plant leafiness (r = 0.448).

Сultlvation of narrow-leaved fireweed (сhamaenerion angustifolium) together with maral root (rhaponticum carthamoides) (willd) jlin

УДК 633.2:582.886

The authors investigated the ability of narrow-leaved fireweed

(Сhamaenerion angustifolium or Ivan-chai) to grow together with maral root

(Rhaponticum Carthamoides) (Willd.) Iljin. in the Northern part of the non-chernozem

soil zone of Russia. Both plants were found to start grow immediately after melting

of snow cover. The phenological flowering period of the maral root occurs earlier than

that of the narrow-leaved fireweed. The experiment has revealed that in a mixture of

grasses, narrow-leaved firewood is being suppressed. In the third year of life there is

a thinning of the stalk of Ivan chai due to a drop in the shoot-producing capacity of its

roots. During the period of the experiment the productivity of the grass mixture was

lower, than in control version by 5 t/ha. In the control version, the metabolic energy

and raw protein collection were 11.2 GJ/ha and 179.3 kg/ha higher than in the grass

mixture. The maral root in the third year of growth develops a strong root system and

a leaf rosette, which results the unfavorable conditions for the narrow-leaved fireweed

(Сhamaenerion angustifolium) and it becomes obvious that it is displaced by the maral

root from the cenosis composition.

Quality and nutritive value of Galega orientalis silage depending on the moisture content of the silage mass

УДК 636.085.052

In the experiments we studied the effect of the moisture content in

plant raw materials when making silage from Galega orientalis on its nutritional value

and quality. It has been found that the moisture content of raw materials has a great

impact on the quality and nutritional value of silage. The lower the moisture content

in the plant raw materials when making silage, the more nutritious and better silage is

obtained, which must be taken into account when preparing it.

Forming yielding capacity of green and dry mass of topinambur depending on its harvesting time

УДК 635.24:635.072

The article presents the research results on the influence of topinambur

harvesting time on the green mass and absolute dry matter yields. The one-factor

experiment has been launched according to the method of B.A. Dospekhov in the

educational and scientific experimental field of Perm State Agrarian and Technological

University. The experiment has followed the following scheme: 1 – gathering of green

mass on the 10th day after the flowering phase, 2 – gathering of green mass on the 20th

day after the flowering phase, 3 – gathering of green mass before tuber lifting. According

to the research results, the harvesting time of green mass has not had any influence

on its yielding capacity (13.1‒15.5 t/ha), or the dry mass yield (3.01‒3.44 t/ha). There

is a tendency for the green mass yield to decrease from an earlier harvest period to a

later one – by 1.7‒2.4 t/ha and dry mass-by 0.16‒0.43 t/ha. The plant survival rate

(88-92%) and the plant standing density (3.2‒3.4 pcs/m2) before harvesting have not

shown any dependence on the harvesting time. A significant increase in absolute dry

matter content of the crop continues until the flowering phase and reaches its maximum

of 6.45 t/ha. Due to the outflow of nutrients from the aboveground part of the plant to

the ground one, there is a sharp decrease in dry mass yield by the first harvest time (by

3.28 t/ha) after the flowering phase. The maximum height of plants is also found in the

flowering phase –153 cm, after which the plant stops to grow. The highest vitamin C

content in topinambur green mass has been found when mowing it before tuber lifting

(65.6 mg/kg), the highest carotene content has been observed when harvesting the

green mass on the 10th-20th day after the flowering phase (17.2‒18.0 mg/kg), the

highest crude ash content has been found when harvesting on the 20th day after the

flowering phase (3.4%).

Nutrition and quality indicators of succulent feeds of the vologda region in accordance with the requirements og GOST

УДК 636.2.085(470.1/.2)

The article covers the main requirements for the bulky food quality

when feeding dairy cattle. Silage, wilted grass silage and haylage are succulent feeds

that form the basis of dairy farming diet and can reach up to 80% of it. A comparative

study of succulent feed has showed that silage and haylage harvested from wilted

perennial legumes contain more whole protein (by 29.14% and 37.25%, respectively),

feed units (by 12.00% and 19.23%) and less dry matter (by 24.93% and 4.36%),

crude fiber (by 1.66%). The deviation of haylage nutritional value in comparison with

GOST requirements is insignificant in terms of dry matter content by 12.47%, whole

protein by 1.11%, crude fiber by 2.69% and sugar by 4.48%.

     Consequently, the lack of feed and errors of their use, that lead to a decrease in

milk productivity and loss of product quality, can be compensated for by the bulky feed

quality and full-value in the used diet. Thus, tests of harvested feed aimed at adjusting

the rations in the system of normalized feeding of animals, which allow realizing the

inherent productive capabilities of dairy cows, are of great importance.

A medical case of diagnosis and treatment of hepatoid glands adenocarcinoma in a dog, the use of wound healing techniques of humane medicine

УДК 619:616:636.7

The paper presents a diagnostic approach to a patient with a suspected

malignant disease. Morphological description of the cytogram, cell morphology and

tumor differentiation have been given. Surgical treatment (excision of the tumor) has

been performed applying the wound healing techniques of humane medicine used in

the removal of perianal fistulas.

Influence of bulls on the reproduction indicators of daughters taking into account their productivity

УДК 636.082

The main objective of the development of dairy cattle breeding is to increase

the breeding productive characteristics, taking into account the preservation of the

reproductive qualities of animals. The research was conducted on the basis of data

from the breeding plant for black-and-white cattle breeding OOO “Zazerkalie” in the

Vologda region. Bulls-improvers were determined by the complex of selected traits,

taking into account the linear affiliation: Meson 3097402441; Retirement 11720463 of

the line of the R. Sovering (1st lactation of daughters). It is recommended to use the

best breeding material (seed of breeding bulls, breeding young), which allows the next

generation to get a reliable improving effect on the selected characteristics.

The influence of cows’ breeds on the quality indicators of milk

УДК 636.082.1

In modern conditions of breeding dairy breeds of cattle, an important

element of the study is the influence of breed and quality indicators of milk. The studies

were carried out in 2019 on the basis of the SHPK “Plemzavod Maysky” Vologda region

on the quality indicators of milk from Ayrshire and black-and-white cows in the amount

of 15663 milk samples. Based on the results of milk samples, a research database on

milk quality indicators was formed and a comparative characteristic was carried out

taking into account the season of the year. As a result of the research, all analyzed

breeds have high quality indicators of milk that meet the requirements of State Standard

throughout the year.

Desk02 theme