ABSTRACT
The objective of this work was to evaluate the performance, carcass traitsand economic indicators of Santa Inês lambs and their crossings finished in feedlot. Thirty whole lambs (10 Santa Inês, 10 ½ Dorper + ½ Santa Inês and 10 ¾ Dorper + » Santa Inês) were used, with 115 days of age and initial live weight of 20.07 kg. The lambs were kept for 60 days receiving sorghum silage and concentrate, after which they were slaughtered. The ¾ Dorper + » Santa Inês lambs and the ½ Dorper + ½ Santa Inês lambs showed higher of dry matter intake and waterintake, greater daily weight gain andbody score in relation to Santa Inês lambs. The carcasses of ¾ Dorper + » Santa Inês lambs showedbetter conformation, finishing and marbling. The gross profit margin showed positive values for all genetic groups, covering the effective operating cost. Dorper crossbred lambs had a higher gross margin compared to Santa Inês lambs. The cost of the diet represented on average 61.35% of the price paid per kilo of sheep meat. In the sheep meat production system, the genetic group influences the zootechnical andeconomic indicators of finishing feedlotof lambs.(AU)
Subject(s)
Animals , Sheep/genetics , Controlled Confinement , Genetic Background , Weight Gain/geneticsABSTRACT
The objective of this work was to evaluate the performance, carcass traitsand economic indicators of Santa Inês lambs and their crossings finished in feedlot. Thirty whole lambs (10 Santa Inês, 10 ½ Dorper + ½ Santa Inês and 10 ¾ Dorper + » Santa Inês) were used, with 115 days of age and initial live weight of 20.07 kg. The lambs were kept for 60 days receiving sorghum silage and concentrate, after which they were slaughtered. The ¾ Dorper + » Santa Inês lambs and the ½ Dorper + ½ Santa Inês lambs showed higher of dry matter intake and waterintake, greater daily weight gain andbody score in relation to Santa Inês lambs. The carcasses of ¾ Dorper + » Santa Inês lambs showedbetter conformation, finishing and marbling. The gross profit margin showed positive values for all genetic groups, covering the effective operating cost. Dorper crossbred lambs had a higher gross margin compared to Santa Inês lambs. The cost of the diet represented on average 61.35% of the price paid per kilo of sheep meat. In the sheep meat production system, the genetic group influences the zootechnical andeconomic indicators of finishing feedlotof lambs.
Subject(s)
Animals , Weight Gain/genetics , Controlled Confinement , Sheep/genetics , Genetic BackgroundABSTRACT
Objetivou-se avaliar o desempenho e características de cordeiros Santa Inês e suas cruzas desmamados aos 75 dias de vida e terminados em confinamento. Foram utilizados 30 cordeiros não castrados, 10 Santa Inês, 10 ½Dorper × ½Santa Inês e 10 ¾Dorper × »Santa Inês, com idade e peso vivo médio no início do experimento de 82 dias e 19,40 kg, respectivamente. Foi utilizada dieta única contendo 169,0 g/kg de proteína bruta e 2,80 Mcal/kg MS. Não houve efeito do genótipo sobre o desempenho dos cordeiros, exceto para escore corporal final, em que os mestiços Dorper alcançaram os maiores escores. As carcaças dos cordeiros ½Dorper × ½Santa Inês e ¾Dorper × »Santa Inês apresentaram maior largura da garupa, área de olho de lombo e percentual de lombo do que as carcaças dos cordeiros Santa Inês. As carcaças dos cordeiros ¾Dorper × »Santa Inês alcançaram maior largura do tórax e do anterior quando comparadas com as carcaças dos cordeiros Santa Inês, tendo obtido também melhor conformação e acabamento de carcaça quando comparadas com as carcaças dos demais genótipos. Entretanto, as carcaças dos cordeiros Santa Inês e ½Dorper × ½Santa Inês apresentaram maior percentual de pescoço em relação às carcaças dos cordeiros ¾Dorper × »Santa Inês.(AU)
This study evaluated the performance and carcass traits of Santa Ines sheep and crosses weaned at 75 days old and finished in feedlot. Thirty uncastrated sheep, 10 Santa Ines, 10 ½Dorper × ½Santa Ines, and 10 ¾Dorper × »Santa Ines were used. The sheep were 82 days old average and 19.40 kg average initial weight. The diet used contained 169.0 g/kg crude protein and 2.80 Mcal/kg DM. No effect of genotype was observed on the performance of lambs, except for the higher final body condition scores achieved by the Dorper crossbreds. The carcasses of the ½Dorper × ½Santa Ines and ¾Dorper × »Santa Ines crossbreds lambs had greater rump and loin eye area and higher loin percentage compared to Santa Ines. Carcasses of ¾Dorper × »Santa Ines crossbreds lambs had greater chest and anterior width compared to Santa Ines and better carcass conformation and finish compared to other genotypes. Furthermore, the carcasses of Santa Ines and ½Dorper × ½Santa Ines lambs had higher neck percentage compared to carcasses of ¾Dorper × »Santa Ines.(AU)
Subject(s)
Animals , Meat/analysis , Breeding/methods , Weight Gain , Sheep/growth & developmentABSTRACT
Objetivou-se avaliar o desempenho e características de cordeiros Santa Inês e suas cruzas desmamados aos 75 dias de vida e terminados em confinamento. Foram utilizados 30 cordeiros não castrados, 10 Santa Inês, 10 ½Dorper × ½Santa Inês e 10 ¾Dorper × »Santa Inês, com idade e peso vivo médio no início do experimento de 82 dias e 19,40 kg, respectivamente. Foi utilizada dieta única contendo 169,0 g/kg de proteína bruta e 2,80 Mcal/kg MS. Não houve efeito do genótipo sobre o desempenho dos cordeiros, exceto para escore corporal final, em que os mestiços Dorper alcançaram os maiores escores. As carcaças dos cordeiros ½Dorper × ½Santa Inês e ¾Dorper × »Santa Inês apresentaram maior largura da garupa, área de olho de lombo e percentual de lombo do que as carcaças dos cordeiros Santa Inês. As carcaças dos cordeiros ¾Dorper × »Santa Inês alcançaram maior largura do tórax e do anterior quando comparadas com as carcaças dos cordeiros Santa Inês, tendo obtido também melhor conformação e acabamento de carcaça quando comparadas com as carcaças dos demais genótipos. Entretanto, as carcaças dos cordeiros Santa Inês e ½Dorper × ½Santa Inês apresentaram maior percentual de pescoço em relação às carcaças dos cordeiros ¾Dorper × »Santa Inês.
This study evaluated the performance and carcass traits of Santa Ines sheep and crosses weaned at 75 days old and finished in feedlot. Thirty uncastrated sheep, 10 Santa Ines, 10 ½Dorper × ½Santa Ines, and 10 ¾Dorper × »Santa Ines were used. The sheep were 82 days old average and 19.40 kg average initial weight. The diet used contained 169.0 g/kg crude protein and 2.80 Mcal/kg DM. No effect of genotype was observed on the performance of lambs, except for the higher final body condition scores achieved by the Dorper crossbreds. The carcasses of the ½Dorper × ½Santa Ines and ¾Dorper × »Santa Ines crossbreds lambs had greater rump and loin eye area and higher loin percentage compared to Santa Ines. Carcasses of ¾Dorper × »Santa Ines crossbreds lambs had greater chest and anterior width compared to Santa Ines and better carcass conformation and finish compared to other genotypes. Furthermore, the carcasses of Santa Ines and ½Dorper × ½Santa Ines lambs had higher neck percentage compared to carcasses of ¾Dorper × »Santa Ines.
Subject(s)
Animals , Weight Gain , Meat/analysis , Breeding/methods , Sheep/growth & developmentABSTRACT
Objetivou-se avaliar o comportamento de 175 vacas leiteiras mestiças durante a ordenha manual. Para isto, foi utilizado um etograma para monitorar o comportamento das vacas nos seguintes momentos: entrada do animal no estábulo (postura e contenção), pré ordenha (pré-dipping e gotejamento), ordenha (ingestão de alimento, ruminação e pós-dipping) e o pós ordenha (postura e saída). Observou-se ainda se a vaca era ordenhada com ou sem bezerro ao pé, duração da ordenha e se urinava ou defecava enquanto contida no estábulo. Para análise dos dados utilizaram-se as interações entre os grupos genéticos e os comportamentos observados através do teste de Qui-quadrado, ao nível de 5% de significância. Os resultados indicaram não haver diferenças significativas entre o comportamento dos dois grupos durante a ordenha manual, o que reflete a capacidade de condicionamento de animais ½ Holandês : ½ Guzerá às mesmas condições de ordenha a que são submetidos animais ¾ Holandês : » Guzerá
This study aimed to evaluate the behavior of 175 crossbred dairy cows during manual milking. For this, an ethogram was used to monitor the behavior of the cows at the following times: the entrance of the animal in the stable (position and containment), pre-milking (pre-dipping and dripping), milking (food intake, rumination and post dipping) and post milking (posture and output). It was also observed if the cow was milked with or without suckling calves, milking duration and if urinated or defecated as contained in the stable. For data analysis we used the interactions between the genetic groups and behaviors observed through the Chi-square test at 5% significance level. Results indicated no significant differences between the behavior of the two groups during manual milking, reflecting the ½ Holstein calves conditioning capacity: ½ Guzerá the same milking conditions to which animals are subjected ¾ Holstein: » Guzerá
Subject(s)
Female , Animals , Cattle , Behavior, Animal/physiology , Crosses, Genetic , Efficiency , Chi-Square Distribution , Hybrid VigorABSTRACT
Objetivou-se avaliar o comportamento de 175 vacas leiteiras mestiças durante a ordenha manual. Para isto, foi utilizado um etograma para monitorar o comportamento das vacas nos seguintes momentos: entrada do animal no estábulo (postura e contenção), pré ordenha (pré-dipping e gotejamento), ordenha (ingestão de alimento, ruminação e pós-dipping) e o pós ordenha (postura e saída). Observou-se ainda se a vaca era ordenhada com ou sem bezerro ao pé, duração da ordenha e se urinava ou defecava enquanto contida no estábulo. Para análise dos dados utilizaram-se as interações entre os grupos genéticos e os comportamentos observados através do teste de Qui-quadrado, ao nível de 5% de significância. Os resultados indicaram não haver diferenças significativas entre o comportamento dos dois grupos durante a ordenha manual, o que reflete a capacidade de condicionamento de animais ½ Holandês : ½ Guzerá às mesmas condições de ordenha a que são submetidos animais ¾ Holandês : » Guzerá(AU)
This study aimed to evaluate the behavior of 175 crossbred dairy cows during manual milking. For this, an ethogram was used to monitor the behavior of the cows at the following times: the entrance of the animal in the stable (position and containment), pre-milking (pre-dipping and dripping), milking (food intake, rumination and post dipping) and post milking (posture and output). It was also observed if the cow was milked with or without suckling calves, milking duration and if urinated or defecated as contained in the stable. For data analysis we used the interactions between the genetic groups and behaviors observed through the Chi-square test at 5% significance level. Results indicated no significant differences between the behavior of the two groups during manual milking, reflecting the ½ Holstein calves conditioning capacity: ½ Guzerá the same milking conditions to which animals are subjected ¾ Holstein: » Guzerá(AU)