Livestock Studies 2009, Vol 49, Num, 1     (Pages: 001-015)

The Effect of Restricted Feeding in Different Duration on Fattening Performance, Slaughtering-Carcas Characteristics and Fattening Cost on Holstein Cattle after Puberty

Habibe TUNÇER 1 ,Ceyhan ÖZBEYAZ 2

1 Tunçer Veteriner Kliniği, KIRŞEHİR
2 Ankara Üniversitesi Veteriner Fakültesi, Zootekni Anabilim Dalı, ANKARA
- It was aimed to determine the effect of restricted feeding in different duration on fattening performance, slaughtering-carcas characteristics and fattening cost on Holstein Cattle after puberty. The study was conducted in a private farm in Kırehir province where steppe climate conditions prevail. A total of 99 head of Holstein male veal, 9 months of age, were used. The veals were assigned to three experimental groups; Group I (control), Group II (applied restricted feeding for 3 months), Group III (applied restricted feeding for 6 months). The average values of initial live weight of G-I, G-II and G-III were determined as 246.23±3.61, 248.41±4.52 and 245.40±4.68 kg, respectively. The finishing live weight of these groups were detected as 479.30± 6.78, 477.55±8.33 and 478.80±8.56 kg, respectively. G-I, G-II and G-III were reached at targeted finishing live weight 240, 248 and 276 days after starting of fattening. The differences among groups were found statistically significant from the start of the fattening period to 240 days that G-I was slaughtered (P<0.001). Daily live weight gain were determined as 0.97±0.03, 0.92±0.17 and 0.85±0.12 kg throughout fattening period for G-I, G-II and G-III, respectively. The differences among groups were found statistically significant at monthly periods of fattening (P<0.01, P<0.001). Daily total dry matter consumption in groups were detected as 9.26, 9.45 and 8.40 kg; concentrate dry matter consumption in groups were found as 7.24, 6.68 and 5.24 kg, respectively. Feed efficiency values based on total dry matter were determined as 9.55, 10.27 and 9.88 while corresponding values based on concentrate dry matter were 7.46, 7.26 and 6.16 for G-I, G-II and G-III, respectively. Means for slaughter weight of groups were 459.28, 458.07 and 455.93 kg; hot dressing percentage of the groups were 56.60, 56.26 and 55.62 % (P>0.05), respectively. The revenue-expenditure differences were detected as 1629.64, 1611.09 and 1697.19 YTL (New Turkish Lira) from the calculations using years of 2006 prices by the Partial Budget Analyze Method in groups, respectively. In conclusion, because of the highest ratio of feeding cost in total fattening cost and price fluctuations of feeds, restricted feeding could be useful during cattle fattening economically. Keywords : Carcass, Cattle, Fattening Cost, Fattening Performance, Holstein, Puberty, Restricted Feeding