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Productivity analysis relates to the quantitative evaluation of factors for individual members as well as to their comprehensive influence. It is difficult to describe the nonlinear relationship of various factors. A novel and original combination of grey relation analysis (GRA) and fuzzy logic productivity prediction hybrid model is proposed in this study to solve the problem. First, based on the parameters of the constructed wells, several elements were chosen as appraisal factors. The multi-level appraisal system was established to describe the nonlinear relationship of various factors. Then, GRA was used to calculate the weight factor and determine the main factors that influence the result of multi-fractured horizontal wells (MFHWs). Finally, coupling GRA with fuzzy logic to calculate the comprehensive evaluation score (CES), which is used to predict productivity and determine the classification value of the reservoir to evaluate the reservoir quality. The hybrid prediction model has been successfully applied to 18 wells of the tight oil field in Northeast China. Practical application results demonstrated a good agreement between the measured initial production and the output of the hybrid model. The new model can be used to predict production for MFHWs quickly and economically.

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Assessment of sperm quality is an important part of the technological process. Fertility of uteruses and bright depends to a large extent on quality of sperm. Before fertilization, you can get an idea of ​​the quality of sperm, to determine some indicators (volume, activity, density) that characterize certain properties. The main method of research in the production environment is the visual assessment of sperm by density and motility, concentration and resistance, and the percentage of live sperm. The testes are a pair of ovoid tubular glands that are located in the testis sac, the outer layer of which is called the scrotum. Each testicle is covered with three shells: protein (covers the surface of the testicle), a special vagina and a common vagina. At the head of the testis, where the head of the appendix departs, the protein shell grows deep into the testis, forming the mediastinum of the testis, and divides the parenchyma into many lobes or chambers. Inside the chambers are thin tubes (0.1-0.2 mm) - twisted tubules of the testis, covered with delicate connective tissue and interstitial cells. The quality and quantity of sperm production of rams of different breeds (assaf, dorper, merinoladshaf) were studied. It was found that sheep of the dorper breed of meat productivity in terms of ejaculate volume exceed the indicators of sheep of the breed assaf dairy-meat direction by 0.11 ml or 20%, and compared with sheep of meat-wool direction of productivity of the breed merinolandshaf respectively by 0.1 ml or 17.8%. According to the semen density of sheep of the assaf breed, the indicators of dorper and merinoladshaf were compared. The average density of semen of sheep of the assaf breed is exceeded in comparison with the dorper breed by 2 times and that of the merinoladshaf by 4 times. Dorper and merinoladshaf had liquid semen, which was estimated at 2 points. The sperm of all breeding rams had a rectilinear oscillating motion. High-quality semen was found in rams of all breeds and was evaluated at 9 points in rams of the assaf breed, and in rams of the dorper and merinoladshaf breeds - at 8 points.

Dairy productivity of sheep is extremely important for rearing lambs, although insufficient attention is paid to the milking of sheep during selection and selection of sheep during mating. The milk yield of ewes is determined by measuring expressed, sucked milk, or by weight gain of lambs for a certain period of life. But in sheep breeding the greatest application is to determine this indicator by the increase in live weight of lambs in the first 20 days of life. This is due to the fact that in the first month of lactation, the ewes' mammary gland synthesizes the largest amount of milk, and lambs are fed exclusively on mother's milk for up to 20 days after birth. The milk yielding capacity of ewes depends on many factors, including the breed characteristics of the morpho-functional properties of their udder. Studies had been carried out on the morphological properties of the udder of ewes of such breedsas Tsigai, Merinolandschaf and Dorper. Some differences were noted in the linear assessment of their udder and the amount of milk obtained from them (milk yield). It was found that Merinolandschaf ewes exceed their peers of Tsigai and Dorper breeds by 2.6 cm or 17.5% (P <0.95) and 4.3 cm or 32.8%, respectively (P˃0.99), udder girth - by 3.9 cm or 11.9% (P˃0.99) and 7.3 cm or 24.8% (P˃0.999). The length of teats in Dorper ewes is greater than in Tsigai ewes by 0.47 cm or 23.1%, and in the Merinolandschaf - by 0.2 cm or 8.7% (P <0.95). Ewes with male lambs in their offspring were more milk-producing than ewes with female lambs. This advantage was in ewes of Tsigai breed 2.2 kg or 9.5% (P≤ 0.95), Merinolandschaf - 2.0 kg or 10.2% (P≥ 0.95), Dorper - 1.5 kg or 7.51% (P≥0.95) During the lactation period of 180 days more milk was obtained from ewes of Tsigai breed than from ewes of the Merinolandschaf breed by 1.8 kg or 16.9% (P≤ 0.95), and from the Dorper breed - by 19.17 kg or 16.9% (P≥ 0.999). Thus, for milk production the most desirable of the studied breeds are Tsigai and Merinolandschaf breeds.