Биологические и сельскохозяйственные науки

Improving Water Management: problems and prospects

Submitted by red on Wed, 27/12/2017 - 13:09

The dynamics of water use indices in the Russian Federation and in the Vologda Region has been evaluated in the article. The dimensionless water use efficiency indices have been suggested. Small applicability of the best available technologies, high energy intensity of waste and natural water clarification, inappropriate disposal of wastewater sludge, high water tariffs in the countryside can be considered as the main problems of water use in the Vologda region. Using wastewater sludge as fertilizer is the most rational method of its disposal.

Influence of feed quality on milk productivity indicators

Submitted by red on Wed, 27/12/2017 - 13:09

The article presents the results of studies on affecting of feed quality on the quality and quantity milk indicators in view of a livestock management method and milking technology. The analysis has revealed the relationship between the balanced diet of dairy cows and the level of milk yield. With the improvement of bulky feed quality the quality of milk has improved too. During the period under review we have noticed an increase in milk production and mass fraction of milk fat content using all management methods and technologies of milking.

Formation of oats productivity under the influence of mineral nutrition background and foliar dressing with preparation Izabion

Submitted by red on Wed, 27/12/2017 - 12:57

Тhe investigations were conducted in the Tver region, on the sod medium sandy loam well cultivated soil, there were studied the features of formation of oats productivity under the influence of mineral nutrition background and foliar dressing with preparation Izabion (1 - effective fertility, 2 and 3 and NPK on 3.5 and 4.5 tons of grain per 1 ha).

Trees reproductive ability in human environment of the European North

Submitted by red on Wed, 27/12/2017 - 12:57

Green spaces in the central part of Vologda have been inventoried. Phenological observations of flowering and seed maturation phases have been performed. Reproductive ability of the most common types has been studied. Trees which can be used as an original seed materials have been selected. Recommendations for reproduction of the studied species have been prepared.

Influence of field beans «protected» protein on indicators of dairy cows productivity

Submitted by red on Wed, 27/12/2017 - 12:57

The article presents the results of studies how field beans subjected to the microwave and chemical treatment influence the productivity of cows and the composition of milk. It has been found that the using in the cows diet of treated corn field beans in an amount of 1,5 kg per head of livestock increases the average milk yield with 4% fat by 5,3-11,1% and the absolute milk protein yield by 2,9-8, 2%.

Turkeys meat quality caused by pre-slaughter factors

Submitted by red on Wed, 27/12/2017 - 12:57

Тhe study has been carried out at LLC “Evrodon” in October rural area of the Rostov region in 2016 on BIG-6 turkeys cross.It has been established that the gutted carcass output of males is 19, 77±0.69 kg, what is 11.1 kg more than of females. By-products output is also higher by males (0.13; 0.03; 0.10; 0.36; 0.08; 0.05 kg respectively) for heads, gizzards, wings, feet, liver and hearts. It has been also discovered a greater meat and bones output from males than from females: the difference in figure of fillet, thigh, breast, wing, tail, frame is 3.38; 1.3; 1.26; 0.79; 0.16; 1.33 kg.

Effective additive «Tasco» in the diets of Ayrshire cows

Submitted by red on Wed, 27/12/2017 - 12:57

Research on studies of feed additive Tasco, consisting of 96% dried seaweeds, influence on the amount and composition of milk in microelements and in iodine specification as well as reproductive characteristics performed by high-yielding cows are carried out. It is established that the studied product inclusion into cows’ rations by 40 and 60 gr a day per head allowed increase day yields from 29,5 kg to 31,7 and 32,8 kg (by 7,5 and 11,2%) in the first lactation period. The tendency of positive Tasco influence on cows’ reproduction is determined as service-period duration is decreased.

Milk protein composition and its technological properties at Saanen goat’s breed depending on their genotype by beta-lactoglobulin level

Submitted by red on Wed, 27/12/2017 - 12:57

The research has been carried out in Vysokogorsk district of the Tatarstan Republic where the protein composition of milk from 80 Saanen goat’s breed by electrophoresis in polyacrylamide gel have been studied. It has been found that goat’s and cow’s milk has the similar protein composition. Interspecies differences are more strongly observed in the concentration of individual fractions. It has been found the studied animals in locus β-Lg have two genetic variants: among AA and BB the prevailing one is genotype AA.

Milk yield and properties of the udder Black-and-White and Simmental breeds under usage of a robotic milking system

Submitted by red on Wed, 27/12/2017 - 12:57

We analyzed the milk production and the basic properties of udderfresh cows Black-and-White and Simmental breeds using a robotic system of milking. According to different periods of lactation and the basic properties of the udder the cows of Black-and-White breed of dairy productivity trends lead. Therefore, to use a robotic milking system the black-motley breed are more suitable in comparison with the combined productivity of Simmental directions under the purposeful selection.

The live weight of broiler chickens in the use of sapropel derivatives in their ration

Submitted by red on Wed, 27/12/2017 - 12:57

The research has been conducted on “Ross-308” broiler chickens in the vivarium of Animal Science and Animal Products Processing Chair of the Velikiye Luki State Agricultural Academy in the Pskov Region. The experimental groups have been formed of ten 13-day-old chickens each. The first experimental group has been given mixed fodder and fresh water with a 1% sapropel extract additive (on a volume basis).

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