Page 10 - Tarangower Angus Catalogue ebook
P. 10

HERITABILITIES                   Calving Ease Dir  14% 86%
       ESTIMATES                        Gestation Length             32% 68%             65% 35%
                                               Birth Wt
       IN ANGUS                             200-Day Wt  12% 88%
                                            400-Day Wt         23% 77%
          The amount of
          genetic influence                 600-Day Wt                 35% 65%
          in a trait.                    Mature Cow Wt                    40% 60%
                                                  Milk  10% 90%
          The amount of                     Scrotal Size
          environmental                                                  39% 61%
          (non-genetic)                  Days to Calving  7% 93%
          influence in a trait.
                                            Carcass Wt                    41% 59%
                                        Eye Muscle Area               34%  66%
                                                Rib Fat                      45% 55%
                                              Rump Fat               32% 68%
                                      Retail Beef Yield %                             60% 40%
                                      Intra-muscular Fat %           32% 68%


       VISUAL APPRAISAL IS STILL VERY IMPORTANT FOR SELECTING BULLS

       •  MASCULINE TRAITS -A strong head, jaw and thick neck   •  STRUCTURAL SOUNDNESS - Feet and bone- Hill country
         indicate high levels of libido, testosterone and reproductive   cattle cover large distances over rugged terrain so a strong
         efficiency.                                            skeleton is essential.
       •  NECK LENGTH -A thick necked animal matures and reaches   •  REPRODUCTIVE- A tight sheath, good sized and shaped
         puberty earlier and has more libido. A longer neck indicates a higher   testicles are essential.
         maintenance animal that is slower to reach puberty and rebreed.
                                                              •  FLANK - Deep flanked animals are easier keeping, have more
       •  HEART GIRTH - larger heart girth is an indicator of vigor and easy   meat  in  the rump  and  have  more  maternal  and  reproductive
         keeping ability. Small heart girth animals are more susceptible to   efficiency. Higher flanked animals tend to be higher maintenance
         stress, are higher maintenance and do not perform well.  and take longer to finish on grass.
   5   6   7   8   9   10   11   12   13   14   15