Heredity
The genetic characteristics of different cashmere goat breeds are the most important influencing factors for villous growth, and play the most important role in the development and activity of secondary hair follicles, the length of villous growth cycle, and the growth intensity. The basic flock with low cashmere production should actively introduce high-quality rams for crossbreeding. Select rams with relatively high cashmere production, large body size, well-proportioned structure, straight back, wide and deep chest, well-groomed hair, strong limbs, strong males, and well-developed testicles. Ecological geography
The growth of cashmere is closely related to the ecological environment (light, temperature, humidity, rainfall, elevation, topography, etc.). Temperature and humidity are two major factors affecting cashmere yield and quality, and cashmere will become thinner and shorter as altitude increases. In addition, the environment can indirectly affect cashmere quality and yield by affecting feed conditions. In terms of ecological and geographical factors, latitude, longitude, and elevation mainly determine the horizontal and vertical patterns of regional hydrothermal conditions and vertical zonal patterns. These three important ecological factors determine the climate, environment, water, heat, light, and vegetation types in different regions. Under the long-term comprehensive effects of these factors, the environmental conditions for the growth of cashmere hairs in certain areas are determined, and in particular, the effect of temperature conditions on the growth of villus is most important. According to reports, high temperatures can make cashmere thinner and produce less cashmere; low temperatures increase cashmere production and cashmere thickens. The mechanism of the effects of light on cashmere growth is through changes in the physiological conditions in the body and the regulation of the endocrine system. In the non-fluff season, goats can be induced to varying degrees by artificially altering the light environment.
physiological
Gender, age and physiological state are the main physiological factors that affect the growth of the villi. In general, adult male rams have better hair growth than adult ewes. Castrated mutton sheep are superior to non-castrated rams. Pregnant ewes are better than empty ewes and ewes. It is better than the ewes with Huaihuang, and the 1-week-old ewes are not much different from the rams. The growth intensity of the villus of the bred sheep is usually about 65% of the adult sheep, and the 2-year-old reserved sheep is usually about 80% of the adult sheep. The 3-year-old-year-old is the most vigorous period of growth intensity of cashmere goats, after 6 weeks of age. decreasing gradually. In addition, physiological damage caused by diseases, stress, miscarriage, excessive sperm extraction, etc. can directly affect the normal growth of the villi.
Vital Signs Monitor,Pulse Oximeter,Oxygen Concentrator,Patient Monitor,valve inflatable extension tube
Anesthesia Medical Co., Ltd. , https://www.honestymed.com