The influence of postpartum mass, body mass gain from calving to the end of the bulling season and month of calving was studied in 1 975 grade and 440 pedigree Africander cows that were classified into six size categories according…
Results obtained with AI in Africander and Jersey cows under extensive conditions in the Northern Cape AI was practised in a herd of approximately 270Africander and 75 Jersey cattle over a five year period at Vaalharts Research Station. During the…
Mice were given an intrauterine injection of a carrier solution containing 2 μCi of 1-l4C-glycerol and 10 μCi of D-53 glucose. The mice were killed from zero to five hours after isotope injection and the reproductive tracts and livers were…
A radioimmunoassay using tubes coated with antibody was developed to measure luteinizing hormone (LH) in bovine blood. Antisera to bovine LH (NIH-LH-B7) were raised in rabbits. Non-specificity of pooled antisera was removed from the antisera by adsorption. The reliability of…
Different silage and concentrate rations for fattening beef cattle Eighteen month old Africander steers were fed four basic rations viz. (l) silage ad lib., (2) silage ad lib. + maize meal at l% of live mass, (3) 5 kg silage+…
