Characteristics of Growth and Development of Young Animals in Industrial Crossbreeding in Dairy Cattle

Mulangui, E.M.; Prokhorov, I. P.; Pikul, A.N.

doi:10.18551/rjoas.2017-11.67

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“…The effectiveness of crossbreeding is determined not only by the genetic potential of hybrids, but also by the interaction of various factors and environmental conditions, which are primarily related to the realization of the heredity of crossbred animals [5,6]. Therefore, the same genes can be expressed in different phenotypic traits under different conditions of nutrition and storage [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Growth and development of F₁ hybrid progenies of Schwitz cows using beef breeds

Madrakhimov

Roziboev²

2023

E3S Web Conf.

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The live weight of bulls at 9 months of age of groups II, III and IV (crossbreed 1) was 305.6, 304.1 and 307.6 kg, respectively, compared with peers of group I 15.3 kg (5.0%), 13.8 kg (4.5%) and 17.3 kg (5.6%) were higher (P≤0.001). Also, for a 9-month growth period, the average daily gain in group II was 1018.5 g, which amounted to 62.2 g or 6.1% (P≤0.001), 25.9 g or 2.5% (P≤0.01) and 24.4 g or 2.4%. (P≤0.01). According to external parameters, the growth of bulls at 6 months of age is 2.3 cm, (2.3%, Р≤0.05), 1.8 cm (1.8%, (Р≤0.05) and 1.3 cm (1.3%) with a height of 2.7 cm, 1.8 cm and 1.6 cm. Later sizes, on the contrary, were higher in bulls of group IV. For example, the depth of the chest of bulls of groups IV is 4.6 cm, 3.3 cm (Р≤0.001) and 1.1 cm (Р≤0.05) in peers of groups I, II and III, respectively, chest circumference 6.2 cm, 4.8 cm (Р≤0.001) and 0.8 cm (P≤0.05), oblique body length 3.8 cm (P≤0.001), 3.6 cm (P≤0.001) and 0.4 cm, width of the hind leg by 0.6 cm, 0.9 cm and 0.7 cm.

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Section: Introductionmentioning

confidence: 99%