Growth performance of the crossbreds between Red Angus and Charolais bulls with Brahman crossbred cows raised at Moncada station
Research aimed at evaluating the growth performance of calves cows born from two crossbreeding formulas between Red Angus and Charolais bulls with Brahman crossbred cows from birth to 21 months old at Moncada Station. The results of the study on 40 crossbred calves, including 20 Red Angus × crossbred Brahman crossbreds (10 males and 10 females) and 20 Charolais × crossbred Brahman crossbreds (10 males and 10 females) showed weight gain from 3 months to 21 months of age, the weight of cows were born from Charolais × Brahman crossbred was always higher than that of cow were born from Red Angus × Brahman crossbred (the weight at 21 months of age (males and females) was 465.8 and 422.5 kg; 439.6 and 397.6 kg respectively) (P<0.05). The Brody, Von Bertalanffy, Gompertz growth functions were found suitable to describe the growth pattern in both formulas including Red Angus × Brahman crossbred and Charolais × Brahman crossbred, but in which Brody function is the most suitable with highest R2, lowest ME, MSE, MPE and MAPE. The absolute average daily gain from 0-6, 7-12, 13-18, 19-21 months of age of bulls, females were born from Red Angus × Brahman crossbred was lower than that of bulls, females were born from the formula is Charolais × Brahman crossbred (males and females) was 804.44; 620.02; 677.20; 611.11 and 759.40; 550.00; 597.22; 547.80 g/day; 767.22; 579.41; 632.22; 579.89 and 732.90; 525.60; 555.60; 498.91 g/day respectively. Through the study, it can be concluded that the two formulations including Red Angus × Brahman crossbred and Charolais × Brahman crossbred have good growth potential under breeding conditions at the North of our country
