Veterynarna biotehnologija – Veterinary biotechnology, 2016, 28, 313-321 [in Ukrainian].
Ternopil State Agricultural Experimental Station of the Podillya Institute of Forage and Agriculture of the NAAS
Ternopil Experimental Station of the Institute of Veterinary Medicine of NAAS
BASIC PARAMETERS FOR MIXED BRED CATTLE OF RED POLISH BREED
Introduction. According to research, there is a need to clarify and correct the previously developed standards. They will regulate growth, exterior, productivity and reproductive capacity of animals. Desirable is a strong constitution and a dense harmonic structure of the animal’s body.
The goal of the work. We want to substantiate and develop the standards based on economic grounds for cattle of the improved type of red polish breed.
Materials and methods of research. In this work we used conventional zoo technical methods, and computers applications.
Results of research and discussion. It was established that selected group of adult cows in the farms had a great milk yield (5500 kg) with milk fat content 0.15–0.22% and protein 0.01% above the standard requirements to the breed. Indicators of milk productivity in the experimental group (firstborn) are 4500 kg of milk per lactation, with a fat content 3.91–3.92% protein – 3.29–3.30%. This is the key to high productivity of these cows in next lactation. A correlation (+0.428) between the milk yield and the live weight of firstborn was found. Animals from research groups characterized by high feed conversion ratio with dairy products (0.943–1.016 hp. Units/kg) – it provides them competitive in terms of industrial use. We found that the indicators of reproductive capacity of experimental animals were within the physiological norm. Assessing exterior of red Polish cattle we found that mixed bred cows had a basically strong constitution. Based on the results of research were clarified and corrected the parameters of desired cows type. In the preferred animal model there were parameters, which are closely correlated with productivity, viability and overall profitability. As a model we took highly productive cows with a productivity over 4500 kg of milk per lactation. As the standard we have adopted real average values of indicators of high-productive animals. These settings are recommended for use in forming of the tribal nucleus and in selection of cows for the exterior and the type of body structure.
Conclusions and prospects for further researches. Evaluation of mixed bred animals of red polish cattle showed that the interbreeding with related red breeds changed the structure of animals body and the genetic potential of productivity increased compared with the original breed. It also led to the development of new standards. The introduction of target standards will promote the consolidation of herds. The purposeful development of basic economic qualities of animals will provide the average yield 5000–5500 kg of milk per cow (fat content of 4.0%). This will help preserve the existing red cattle breed and make it competitive.
Keywords:targeted standards, parameters of selection, mixed breeds, cow, milk productivity.