Carcass characteristics and fatty acid profile of Santa Inês lamb fed banana leftovers

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 12 th and 13 th 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 12 th and 13 th 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.

Technologies Used in Production Systems for Santa Inês Sheep: A Systematic Review

“…It was possible because of the by-product characteristics of bulky feed with 62.30% neutral detergent fiber, 19.06% crude protein, and 9.20% ethereal extract ( 112 ). Also, the supply of banana leftovers can cheapen the diet in places with availability, and its inclusion can replace up to 75% of corn bran ( 136 ).…”

A potential of banana flower and pseudo‐stem as novel ingredients rich in phenolic compounds

“…There are currently several studies on the inclusion of banana by‐products in animal and human diets. For instance, banana leftovers were used to replace up to 75% of the cornmeal in lamb diets without causing adverse effects (Menezes et al ., 2018). Likewise, several studies with pseudo‐stem show that it can be considered as an alternative source to traditional livestock fodder (Wang et al ., 2016).…”