FECT OF PARITY, SEX AND TYPE OF BIRTH ON MILK BLD, KID GROWTH, BODY PHYSIOLOGICAL REACTiONS D SOME BLOOD CONSTITUENTS OF ZARAIBI GOATS

The present study aimed to investigate the effects of parity, type of




Dirth and kid’s sex on milk yield an:i kids growth of Zaraibi goats. The effects




on body physiological reactions and some blood constituents have been also




nvestigated. Thirty-six adult Zaraibi does (12 first parity, 12 second parity and




2 third parity), immediately, after kidding were used throughout the 17




Neeks of lactation period. Weekly milk yield determination was performed by




kid suckling technique. Blood samples were taken on day 1, 3 and 5 after




•idding, then weekly (blood samples were collected) from cade doe. Blood




samples were analyzed for packed cell volume (PCV), haemoglobine (Hb),




serum total protein (TP), albumin (AL), total lipids (TL), glucose, cholesterol,




lamic oxaloacetic transaminase (GOT) and glutamic pyruvic tcansamiflaSe




tGPT). Bi-weekly pulse and respiration rats as well as rectal temperature




re recorded.




The results showed,that mi’k yield increased as the number of




arities increased. Does bearing male and triplet kids produced more milk




than those bearing female and single or twin kids. At the first week after birth,




third parity kids were heavier than those of the first and second ones. Male




kids and single born kids were heavier and grow faster than females and twin




and triplet kids. The third parity does were more physiologically stressed than




oes in their first and second parities. Changes in glucose, AL, GL, AL:GL




ratio, TP, GOT, GPT:GOT ratio, TL and cholesterol were affected by parities,




while Hb, GPT were not affected. The effect of the third parity was clear on




the milk yield, kids weight, pulse rate, respiration rate, rectal temperature and




ieamatological parameters, than those of the first or second parity.




Goats have served mankind earlier and longer than cattle and sheep.




It ¡s managed for the production of meat, milk and hair particularly in arid,




semitropical or mountainous countries (Haenlein and Delaware, 1992). One




of the w&l-knowri native Egyptian breed ¡s zaraibi goats, called Egyptian




Nubian. Effective utilization of genetic variability of such breed of goat




requires reliable and systematic information about genetic and non-genetic




effects on their production characteristics. Previous investigations revealed,




that a wide environmental and non-environmental factors affect the




productive and reproductive performance of goats. Various investigators




observed significant differences in body weight traits of kids due to their age




of dams, sex and year and season of birth. Mekkawy (2000) observed that




body weight of zaraibi kids increased with age of dam, but this increase was