Effects of the feeding system and breed on the growth performance, biometric features, and ruminal development of feedlot goat kids

Pedro Paulo Sobolow de Souza, Helen Fernanda Barros Gomes, Raquel Ornelas Marques, Heraldo Cesar Gonçalves, Gil Inacio Lara Canizares, Paulo Roberto de Lima Meirelles, Giuliana Micai de Oliveira, Evelyn Prestes Brito, Natalia Santos Leal, Angelo Polizel Neto

Abstract


The objective of this experiment was to evaluate the effect of 2 feeding systems and 5 breeding groups on the growth performance, biometric features, and stomach morphology of feedlot goat kids. The experiment utilized gender as a randomized blocking factor in a 5 × 2 factorial scheme. The study goats were from the Alpine, Anglo-Nubian, 1/2 Boer x Alpine, 3/4 Boer x Alpine, and 7/8 Boer x Alpine breeds. Half of the goats were fed an experimental diet, whereas the other half were given the same diet supplemented with 1.5 L milk daily. The kids were slaughtered after they attained 30 kg body weight. The 1/2 Boer x Alpine goats showed superior growth performance because they exhibiting considerable heterosis. These animals are especially easy to use given that there is no need to maintain cross-bred females (½ Boer x Alpine e ¾ Boer x Alpine) in the flock. Using milk in the feed the animals does not adversely affect growth performance or biometric features. Moreover, it helps to reduce the total weight of the stomach and leads to a 51.39% savings on feed. Dietary supplementation of milk in goat feed is recommended so long as there is excess milk available on the property.

Keywords


Nursing; External animal anatomy; Ruminal papillae; Rumen-reticulum.

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DOI: http://dx.doi.org/10.5433/1679-0359.2016v37n4p2111

Semina: Ciênc. Agrár.
Londrina - PR
E-ISSN 1679-0359
DOI: 10.5433/1679-0359
E-mail: semina.agrarias@uel.br
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional