RELATIONSHIP BETWEEN SOME BLOOD PARAMETERS, WOOL YIELD AND BODY MEASUREMENTS IN THE YOUNG ANGORA RABBITS.

Abstract

This paper deals with the relationship among wool production, growth and development, hemoglobin (Hb) content and the activities of serum alkaline phosphatase (ALP), acid phosphatase (ACP), glutamic-pyruvic transaminase (GPT) and 5'-nucleotidase (5'-NT) in angora rabbit. The experiment was conducted in the University Rabbit Farm from April 1991 to April 1992. 95 rabbits (29 German Angora, 36 Chinase Angora and 30 F1 rabbits of the German (males) x Chinase (females) were raised under the same conditions. In each type, the blood of 3 to 6 rabbits, 20, 45, 90 and 180 days old, was taken for the measuring of biochemical traits.The results show that body weight, body measurement and wool production increase as the rabbit's age increases. ALP activity first increases and decreases afterwards, as the rabbit grows older. ACP activity changas in the same pattern as ALP, in German Angora and Chinase Angora. But in the crossbreds of German x Chinase Angora, ACP activity increases continuously. The least square analysis indicates that wool yields of German Angora at 90 and 180 days are significantly higher than those of Chinase Angora (P<0.05). Hb contents of the German at 45 and 90 days are significantly higher than those of Chinase, and the latter is significantly higher than the F1 rabbits (P<0.05). At 45 days, Chinase Angora has the highest ALP activity, F1 the second and German the lowest, and the differences among them are significant (P<0.05). At 45 days, ACP activity of German Angora is significantly higher than that of Chinase Angora, and the latter higher than that of F1 rabbits (P<0.05). But at 90 days and 180 days, ACP activity of F1 is significantly higher than that of German and Chinase Angora, and the German is still higher than the Chinase (P<0.05).Using body weight, body length, chest girth and wool yield as one variate group and Hb content, GPT, ALP, and ACP activity as another group, the canonical correlation coefficients of the first three pairs of variates have been calculated, which are 0.8295, 0.7395 and 0.5835 respectively (P<0.05 or 0.01). lts correlation information ratio is 87.34 %. The principal factors which affect the first pair of canonical correlation variates are body length (a2 = 1.3783), wool yield (a4 = -1.0584), GPT activity (b2 = 0.6145) and ACP activity (b4 = 0.5441).Using body weight, body length and chest girth as one variate group an Hb content, GPT, ALP and ACP activity as another group, the canonical correlation coefficients of the first three variate pairs have been obtained, which are 0.9478, 0.5632 and 0.4170 respectively (P<0.05 or 0.01). lts correlation information ratio is 100 %. The principal factors affecting the correlation of the first variate pair are body weight (a1 = 0.7631), chest girth (a3 = -0.6472) and Hb content (b1 = 0.7807).