Performance and carcass traits of Moxotó growing goats supplemented on native pasture under semiarid conditions

Abstract

-The objective of the present study was to assess the growth performance and carcass traits of Moxotó goat kids fed different levels concentrate (supplement) (SL) on native pasture under semiarid conditions in Brazil. Thirty-two castrated kids (15.7±0.78 kg initial BW) were allocated randomly to one of the four SL (treatment groups: 0, 5, 10 and 15 g/kg BW). When the animals of treatment group 15 g/kg BW reached 25 kg BW, the animals in the other treatments groups were also slaughtered. Therefore, the animals belonging to the 0, 5, 10 and 15 g/kg of BW were finished with 18.40, 21.04, 22.94 and 25.74 kg of BW, respectively. The concentrate supplementation positively influenced the performance and the carcass traits of animals, providing higher feed intake and thus greater weight gain. The results of cold carcass yields were 405.9, 427.0, 449.1 and 462.9 g/kg of SBW for 0, 5, 10 and 15 g/kg BW, respectively. The weight of the different commercial cuts, (neck, ribs, shoulder, loin and leg) increased linearly as the SL increased; however the yields of the carcass cuts were not influenced, except for the shoulder. Overall, the distribution of non-carcass fat increased as SL increased, with the exception of mesenteric fat yield, which was not influenced. The use of concentrate supplementation to Moxotó goats under grazing conditions on native rangelands of the Brazilian semiarid improves the performance of animals and carcass yield, but does not affect the yields of commercial cuts of Moxotó growing goats.

Response of supplemental cassava root sievate - cassava leaf meal based diets on carcass and cost benefits of kano brown goats Capra aegagrus

“…The empty weight (7.75-11.35kg) obtained in this study is lower than 13.09-19.72kg reported by Marques et al (2014) for Moxotó growing goats, but somehow comparable with 8.1-9.2kg reported by Grum (2010) for Kano brown goats. The warm carcass weight (4.43-7.17kg) obtained in this study is lower than 11.01kg reported by Rodriguez et al (2014) and higher than 3.40-4.65kg reported by Ifut et al (2011).…”

Carcass characteristics of Canindé goats subjected to feed restriction

“…The fact that only the shoulder exhibited differentiated growth is due to the greater amount of bones it contains; thus, the proportion will be greater in leaner carcasses. MARQUES et al (2014) studied increasing levels of concentrate supplementation (0, 5, 10 and 15g kg -1 of BW) in Moxotó goats (with similar BW to our study) grazing in the semiarid region and observed that the weights of the neck, rib, shoulder and leg cuts also increased. The proportion of the shoulder was the only cut influenced by the feed restriction levels, as observed in the present study.…”

Desenvolvimento dos órgãos e deposição de gorduras em cabritos Canindé sob restrição alimentar

“…A menor deposição de gordura em animais submetidos à restrição pode ser explicada pelo menor consumo de energia, haja vista que a exigência energética para a lipogênese é elevada. Em outros estudos também foi verificada menor deposição de lipídeos em função da redução na ingestão de energia (BEZERRA et al, 2010;LISBOA et al, 2010;MARQUES et al, 2014). Mesmo em condição de restrição alimentar, os caprinos Canindé apresentaram deposição de gordura total no corpo superior à deposição em caprinos castrados da raça Saanen com pesos semelhantes (FIGUEIREDO, 2014), o que pode demonstrar a reserva energética como prioridade para as raças nativas e naturalizadas.…”