ABSTRACT
The use of new feed resources, particularly local agroindustrial byproducts, such as banana, may be an option for replacing those traditionally used for sheep feed to reduce production costs. Thus, the aim of this study was to evaluate the dietary effects of replacing corn bran with banana leftovers on performance, carcass, non-carcass components, meat traits, and fatty acid profile of Santa Inês lambs. Twenty-four Santa Inês female lambs with an average weight of 23.73 kg were fed diets containing 60 % coast cross hay and 40 % concentrate (30 % corn bran and 10 % soybean meal). Treatments consisted of corn bran replaced by banana leftovers at rates of 0, 25, 50, and 75 % on a dry matter basis. The experiment lasted 120 days. Animals were slaughtered and carcasses and non-carcass components were evaluated. The half-carcasses were weighed and sectioned into commercial cuts. The 12th and 13th ribs were dissected to collect bones, muscle and fat proportions. Cooking loss, color, shear force and sarcomere length were measured. Fatty acid profiles were obtained by gas chromatography. Hot and cold carcass weight, leg, neck, lung, loin eye area, fat thickness, initial sample weight of the 12th and 13th ribs, fat and bone, presented a negative linear effect of banana leftovers replacing corn in the diet. Loin, fat thickness, cooking loss and carcass redness showed a negative quadratic effect, while full and empty abomasum, full omasum, sarcomere length and yellowness presented a positive quadratic effect. Replacement of up to 75 % of corn bran by banana leftovers did not interfere in the intake, performance, meat traits and the fatty acid profile of lambs. The use of banana leftovers may be an alternative for reducing animal production costs.
Subject(s)
Animals , Sheep, Domestic , Diet/veterinary , Animal Feed , MusaABSTRACT
The use of new feed resources, particularly local agroindustrial byproducts, such as banana, may be an option for replacing those traditionally used for sheep feed to reduce production costs. Thus, the aim of this study was to evaluate the dietary effects of replacing corn bran with banana leftovers on performance, carcass, non-carcass components, meat traits, and fatty acid profile of Santa Inês lambs. Twenty-four Santa Inês female lambs with an average weight of 23.73 kg were fed diets containing 60 % coast cross hay and 40 % concentrate (30 % corn bran and 10 % soybean meal). Treatments consisted of corn bran replaced by banana leftovers at rates of 0, 25, 50, and 75 % on a dry matter basis. The experiment lasted 120 days. Animals were slaughtered and carcasses and non-carcass components were evaluated. The half-carcasses were weighed and sectioned into commercial cuts. The 12th and 13th ribs were dissected to collect bones, muscle and fat proportions. Cooking loss, color, shear force and sarcomere length were measured. Fatty acid profiles were obtained by gas chromatography. Hot and cold carcass weight, leg, neck, lung, loin eye area, fat thickness, initial sample weight of the 12th and 13th ribs, fat and bone, presented a negative linear effect of banana leftovers replacing corn in the diet. Loin, fat thickness, cooking loss and carcass redness showed a negative quadratic effect, while full and empty abomasum, full omasum, sarcomere length and yellowness presented a positive quadratic effect. Replacement of up to 75 % of corn bran by banana leftovers did not interfere in the intake, performance, meat traits and the fatty acid profile of lambs. The use of banana leftovers may be an alternative for reducing animal production costs.(AU)
Subject(s)
Animals , Sheep, Domestic , Animal Feed , Diet/veterinary , MusaABSTRACT
The allometric growth of male and female naturalized pig breeds (Nilo, Piau, Moura, and Monteiro) was evaluated regarding hip height, snout length, and head length using the allometric equation. Body measurements generally show later growth in relation to the snout length and earlier growth in relation to the head length and hip height. When comparing breeds of pigs, female Moura animals showed later growth of the characteristics linked to muscle (thoracic circumference, body length, and longitudinal diameter) than of head length. Nilo females showed characteristics such as shoulder length, rump length and interschiadic distance earlier than snout length. There were differences between the breed and gender in terms of development times for the different parts of the body, showing that breeding systems and use of these animals have to be specific for each breed.(AU)
O crescimento alométrico de raças de suínos naturalizados (Nilo, Piau, Moura e Monteiro), machos e fêmeas, foi avaliado em relação à altura do quadril, comprimento do focinho e comprimento da cabeça, usando-se a equação alométrica. As medidas do corpo geralmente apresentam um crescimento mais tardio em relação ao comprimento do focinho e precocemente em relação ao comprimento da cabeça e altura do quadril. Ao comparar as raças de suínos, as fêmeas da raça Moura apresentaram características relacionadas com o crescimento muscular (circunferência torácica, comprimento do corpo e diâmetro longitudinal) mais tardiamente ao comprimento da cabeça. Fêmeas Nilo apresentaram características do comprimento do ombro, comprimento da garupa e a distância interesquiática mais precoce em relação ao comprimento do focinho. Foram encontradas diferenças entre a raça e o sexo no tempo de desenvolvimento para as diferentes partes do corpo, mostrando que os sistemas de criação e utilização desses animais devem ser específicos para cada raça.(AU)
Subject(s)
Animals , Swine/growth & development , Weight Gain/genetics , Body Weights and Measures/veterinary , Sex Factors , Species SpecificityABSTRACT
The allometric growth of male and female naturalized pig breeds (Nilo, Piau, Moura, and Monteiro) was evaluated regarding hip height, snout length, and head length using the allometric equation. Body measurements generally show later growth in relation to the snout length and earlier growth in relation to the head length and hip height. When comparing breeds of pigs, female Moura animals showed later growth of the characteristics linked to muscle (thoracic circumference, body length, and longitudinal diameter) than of head length. Nilo females showed characteristics such as shoulder length, rump length and interschiadic distance earlier than snout length. There were differences between the breed and gender in terms of development times for the different parts of the body, showing that breeding systems and use of these animals have to be specific for each breed.
O crescimento alométrico de raças de suínos naturalizados (Nilo, Piau, Moura e Monteiro), machos e fêmeas, foi avaliado em relação à altura do quadril, comprimento do focinho e comprimento da cabeça, usando-se a equação alométrica. As medidas do corpo geralmente apresentam um crescimento mais tardio em relação ao comprimento do focinho e precocemente em relação ao comprimento da cabeça e altura do quadril. Ao comparar as raças de suínos, as fêmeas da raça Moura apresentaram características relacionadas com o crescimento muscular (circunferência torácica, comprimento do corpo e diâmetro longitudinal) mais tardiamente ao comprimento da cabeça. Fêmeas Nilo apresentaram características do comprimento do ombro, comprimento da garupa e a distância interesquiática mais precoce em relação ao comprimento do focinho. Foram encontradas diferenças entre a raça e o sexo no tempo de desenvolvimento para as diferentes partes do corpo, mostrando que os sistemas de criação e utilização desses animais devem ser específicos para cada raça.