Control of parturition of cross gilts by cloprostenol administration

Com o objetivo de controlar o parto pela administração de cloprostenol, 21 marrãs mestiças (Large White x Duroc) gestantes, distribuídas em três grupos, receberam por via intramuscular, 1 ml de solução salina dois dias antes da provável data do parto, 250 µg de cloprostenol um dia antes, e 250 µg de cloprostenol, dois dias antes. O tempo de indução do parto foi, em média, de 51,9; 14,6 e 28,4 horas, para os grupos I, II e III, respectivamente, com a concentração maior no grupo III, onde 71,4% dos partos ocorreram no intervalo de 25 a 36 horas após os tratamentos (P0,05).With the objective to control the parturition by cloprostenol administration, 21 pregnant cross gilts (Large White x Duroc), were distributed into three groups, that received intramuscular injections, 1 ml saline soluctions two days before, 250 µg of cloprostenol one day before and 250 µg of cloprostenol two days before probable parturition. The parturition induction time were, in mean, 51.9, 14.6 and 28.4 hours to the group I, II and III, respectively, with the greatest concentration in group III, were 71.4% of parturition occurred in intervals of 25 to 36 hours after treatment (P0.05)

EFFECTS OF 3 TOPICAL PLANT EXTRACTS ON WOUND HEALING IN BEEF CATTLE

Eleven heifers of the Purunã cattle breed were used to evaluate wound healing by second intention. An experimental wound excision model in bovines was created by means of a skin punch of diameter 2cm. The animals were topically treated for 17 days with a saline control or decoctions of Schinus terebinthifolius Raddi (Aroeira mansa), Tabebuia avellanedae Lorentz ex Griseb (Ipê Roxo), and Casearia sylvestris Sw.(Guaçatonga) mixed with carboxymethyl cellulose. Centripetal retraction, clinical, and histological aspects of the wounds were observed until complete healing. Decoctions of T. avellanedae and S. terebinthifolius, but not C. sylvestris, had a beneficial effect on wound healing by second intention

Carcaça e carne de novilhos cruzas Pardo Suíço x Canchim e Purunã x Canchim terminados em confinamento Feedlot performance and carcass and meat traits of crossbred Braunvieh x Canchim and Purunã x Canchim

O trabalho teve os objetivos de avaliar o desempenho em confinamento e as características da carcaça e da carne de novilhos inteiros dos grupos genéticos ½ Pardo Suíço + ½ Canchim (1B1C), ½ Purunã + ½ Canchim (1P1C) e ¾ Purunã + ¼ Canchim (3P1C). Foram utilizados 23 novilhos inteiros com idade média de 22 meses, que permaneceram confinados por 145 dias. O aumento da proporção de genes Purunã na composição racial dos animais de 50% para 75% no cruzamento com Canchim resultou em incrementos de peso no abate (PA) e de ganho de peso (GMD) de 10,6 e, 12,1%, respectivamente. Os animais 1B1C apresentaram PA e GMD semelhantes aos animais 3P1C e superiores aos animais 1P1C. O consumo de matéria seca (MS) e o GMD não diferiram entre animais dos grupos 1B1C e 3P1C, ambos apresentando consumo e GMD superiores aos dos animais 1P1C (8,87; 7,97 e 7,02kg de MS animal-1 dia-1, e, 1,62; 1,41 e 1,58kg animal-1 dia-1, respectivamente). Animais 1B1C e 3P1C apresentaram carcaças 12,1% mais pesadas que os animais 1P1C. A conformação da carcaça dos animais 1B1C foi superior (15,0 pontos) em relação aos 1P1C e 3P1C (13,2 e 13,6 pontos, respectivamente). Animais 1B1C e 3P1C demonstraram valores similares para marmoreio da carne (7,5 e 6,6 pontos, respectivamente), e superiores em relação ao 1P1C (4,8 pontos). A produção de animais F1 Pardo Suíço x Canchin é mais interessante ao produtor, devido à maior velocidade de ganho de peso e maior peso de carcaça, ao frigorífico, por obter carcaças de melhor conformação e grau de acabamento, e ao consumidor, por apresentar maior grau de marmorização da carne e textura mais fina.The research had the objectives of evaluating feedlot performance as well as carcass and meat traits of 23 young bulls from three genetic groups: ½ Braunvieh + ½ Canchim (1B1C), ½ Purunã + ½ Canchim (1P1C) and ¾ Purunã + ¼ Canchim (3P1C). The experimental animals were 22 months old, on average, at the beginning and remained in total confinement during 145 days. The increase in the proportion of Purunã gens, from 50% to 75%, in the cross with Canchim, brought about increment of slaughter weight (SW) and weight gain (GW) of 10.6 and, 12.1%, respectively. Animals 1B1C were superior to the 1P1c animals and similar to the 3P1C ones with respect to SW and GW. Likewise, the feed intake and GW were similar between animals of the1B1C and 3P1C, both being superior to the ½ P + ½ C animals. (8.87, 7.97 and 7.02kg animal-1 day-1; and, 1.62, 1.41 and 1.58kg animal-1 day-1, respectively). The 1B1C and 3P1C animals produced carcasses weighing 12.1% more than those of the 1P1C animals. Better carcass conformation scores were observed for the 1B1C animals in comparison to those from the1P1C and 3P1C ones. The group averages for this trait were 15.0 points versus 13.2 and 13.6 points, respectively. The 1B1C and 3P1C groups had similar averages for marbling score of the meat (7.5 and 6.6 points, respectively), both being superior to the ½ P + ½ C group that had an average marbling score of 4.8 points. The production of F1 Braunvieh x Canchim animals is advantageous for the entire beef cattle production chain. The producer benefits because these animals yield heavier carcass weight; the slaughter plants also gain with the better carcass conformation and degree of finish; and, finally, the consumer because the meat of these animals has better marbling and texture scores