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      Desenvolvimento de estômago de bezerros holandeses desaleitados precocemente Translated title: Stomach development of early weaned holstein calf

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          Abstract

          O presente estudo foi desenvolvido com o objetivo de avaliar, em diferentes idades da fase inicial da vida produtiva, o desenvolvimento dos compartimentos estomacais de bezerros da raça Holandês desaleitados precocemente e recebendo concentrado e volumoso ad libitum a partir do início da segunda e terceira semanas de vida, respectivamente. Foram utilizados 18 animais, distribuídos aleatoriamente em três tratamentos (idade de abate). Foram abatidos seis bezerros ao nascimento (referência), seis aos 50 dias e seis aos 110 dias de vida, para a retirada dos estômagos e mensurações de peso de tecido e volume do órgão e dos compartimentos. Os dados foram submetidos a análises de correlação e regressão, por intermédio do programa estatístico SAS (1996). Foi verificado aumento da capacidade de todos os compartimentos estomacais com o avanço da idade dos bezerros, mas com taxas de crescimento diferenciadas entre os compartimentos. Foram observadas aceleração do crescimento ruminal e retração do crescimento abomasal, com o incremento da idade. Antes dos 50 dias, ocorreu inversão nas proporções dos compartimentos rúmen-retículo e abomaso, enquanto o omaso manteve ritmo constante de desenvolvimento.

          Translated abstract

          The present work was carried out to evaluate the growth of stomach compartments of early weaned Holstein calves. The animals were fed concentrates and hay from the second and third week of age respectively. Eighteen animals were allotted to a completely randomized design, with three treatments (slaughter age). Six calves were slaughtered at birth, at 50 days at 110 days of age; the stomachs were withdrawn and the weight and volume of each compartment measured. Data were submitted to correlation and regression analysis through the SAS statistical program, (1996). An increase of the capacity of all the stomachs compartments was verified with the progress of the age of the calves, but with growth rates differentiated among the compartments. The increase of the reticulo-rumen growth and the decrease of the abomasum growth with increase of age were observed. Up to 50 days of age the proportion of the reticulo-rumen and abomasum stomach compartments was changed, but the omasum maintained a constant rhythm of development.

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbz
                Revista Brasileira de Zootecnia
                R. Bras. Zootec.
                Sociedade Brasileira de Zootecnia (Viçosa )
                1806-9290
                December 2003
                : 32
                : 6
                : 1461-1468
                Affiliations
                [1 ] Universidade Federal de Lavras Brazil
                [2 ] Universidade Federal de Santa Maria
                [3 ] Universidade Federal de Santa Maria
                [4 ] Escola Agrotécnica Federal de São Vicente do Sul
                [5 ] Universidade Federal de Santa Maria
                Article
                S1516-35982003000600021
                10.1590/S1516-35982003000600021
                5eeea97c-2323-4364-bc6b-3040b7f9c217

                http://creativecommons.org/licenses/by/4.0/

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                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1516-3598&lng=en
                Categories
                AGRICULTURE, DAIRY & ANIMAL SCIENCE
                VETERINARY SCIENCES

                Animal agriculture,General veterinary medicine
                abomasum,early weaned,omasum,rumen,stomach,abomaso,desaleitamento precoce,estômago,omaso,rúmen

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