Evaluation of morphological traits and physiological variables of several Chinese goat breeds and their crosses.

Abstract

The current study was undertaken to evaluate some morphological traits of the goat breeds raised in Southwest China. The field experimentation and data collection were from 434 animals presenting seven breeds of the Dazu black goat (DBG; n=203), Saanen milk goat (SMG; n=50), Black Boer × Dazu black goat (BXC; n=28), Hechuan white goat (HWG; n=49), Inner Mongolia Cashmere goat (IMCG; n=25), IMCG × DBG (F1; n=57) and F1 × F1 (F2; n=22). All studied animals were adult and selected to be at the same age (36.50±0.75months). After editing, more than 20 morphological and production traits like body condition score (BCS), testicle measurements, coat colour, fibre traits, skin colour, horn colour, horn shape, horn orientation, wattles, front hair, beard, ear shape, ear size, rump angle, hind leg angulation and physiological variables were analysed. BXC and DBG had dark coat colour, whilst SMG, HWG and IMCG had light colour, whilst F1 and F2 ranged from light to dark coat colour. Concerning BCS, the breeds BXC and DBG were characterized as fat goats, whilst SMG, HWG, F1 and F2 were average, whilst IMCG was thin. The maximum values for testis measurements were recorded for BXC, SMG and DBG. For fibre traits, IMCG, F1 and F2 were the most superior. BXC and DBG males have good fertility parameters. The highest values for rectal temperature, skin temperature and breath rate were recorded for SMG. These findings revealed the presence of a wide range of morphological differences among studied goat breeds. Such diversity in the performance of goat breeds raised in Southwest China is crucial to implement reliable selection strategies for breeding goats in this area.