Inclusion of Pennisetum purpureum Cuba cv. CT-115 in the diet of Holstein crossbred cattle. Its effect on body composition


Abstract


Eighteen crossbred Holstein bulls with live weights of 436, 432 and 431 kg under stabling feeding systems were used. Animals were fed a sugar cane forage basal diet to which Pennisetum purpureum cv. Cuba CT-115 forage was included to determine differences in viscera and internal organs weight. A simple classification analysis was carried out and Duncans multiple range test in the necessary cases was applied. Animals were weighed before moving them to the slaughter house and left to fast for 24 h, with ad libitum water. Later they were slaughtered through the captive bolt method and internal organs were weighed separately, as well as other body components. There was an increase (P < 0.05) of the percentage representing the full digestive tract, regarding the live weight of the animals consuming sugar cane forage with the inclusion of CT-115 forage at 23 % of the diet. It is concluded that in this genotype the inclusion of CT-115 forage in complete diets of sugar cane only affected the percentage representing the full digestive system of the live weight of the animal.
Key words: bovine cattle, internal organs, sugar cane, empty live weight

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