Carcass characteristics of Canindé goats subjected to feed restriction

Abstract

This study aimed to evaluate the effects of feed restriction on the carcass characteristics of castrated Canindé goat kids. A randomized block design was used, in which 21 goat kids with a body weight (BW) of 15.9±1.0kg were allocated to three levels of feed restriction: ad libitum, 20% and 40% restriction related to the ad libitum intake. The diet consisted of 55% forage (Tifton) and 45% concentrate. All animals were slaughtered when the kids fed ad libitum reached a BW of 25kg. After slaughter, the carcasses were chilled for 24 hours and subsequently measured. Kids fed ad libitum and subjected to 20% feed restriction showed similar morphometric carcass measurements, except for the chest circumference. Goat kids fed ad libitum exhibited greater values for warm and cold carcass yields compared with those subjected to 40% feed restriction and did not differ from the kids under 20% feed restriction. Weights of the commercial cuts showed decreasing mean values according to the intensity of feed restriction. Castrated Canindé goat kids subjected to 20% feed restriction presented similar carcass yields and proportion of commercial cuts to those fed ad libitum. RESUMO:Objetivou-se com o presente estudo avaliar os efeitos da restrição alimentar sobre as características de carcaça de cabritos Canindé castrados. Foi utilizado um delineamento em blocos casualizados, no qual 21 cabritos com peso corporal (PC) de 15,9±1,0kg foram distribuídos por três níveis de restrição alimentar: ad libitum, 20% e 40% de restrição alimentar. A dieta consistiu de 55% de volumoso (Tifton) e 45% de concentrado. Os animais foram abatidos quando os cabritos alimentados ad libitum atingiram PC de 25kg. Após o abate, as carcaças foram resfriadas por 24 horas e, subsequentemente, mensuradas. Os cabritos alimentados ad libitum e submetidos à restrição alimentar de 20% apresentaram medidas morfométricas semelhantes, exceto para a circunferência do peito. Os cabritos alimentados ad libitum apresentaram maiores valores para rendimento de carcaça quente e fria em comparação àqueles submetidos à restrição alimentar de 40% e não diferiram entre os cabritos com restrição alimentar de 20%. Os pesos dos cortes comerciais apresentaram médias decrescentes com a intensidade da restrição alimentar. Cabritos Canindé castrados submetidos à restrição alimentar de 20% obtém rendimento de carcaça e proporção dos cortes comerciais similares aos alimentados ad libitum. Palavras-chave: cortes comerciais, raças nativas, rendimento de carcaça.

Sugarcane bagasse or elephant grass hay in diets for goats: Performance, feeding behavior and carcass characteristics

“…Thus, it does not significantly influence the final carcass weight and yield. Biological yield was influenced by fiber source, most likely because when considering the empty body weight, this parameter is affected by variations in the gastrointestinal tract contents (Bezerra et al, 2017), that depends on the diet intaked.…”

Ingestive behaviour and Growth Performance of Boer Crossbred and Indigenous Goat Kids Under Different Feeding Levels in Semiarid Region in Brazil

“…In the semiarid region of Northeast Brazil, goat farming is one of the main economic activities carried out by the rural population, highlighting the use of animals of native breeds, such as Canindé and Moxotó (Araújo et al, 2017a;Ribeiro et al, 2017). With the introduction of exotic breeds, such as the Saanen, Anglo-Nubian, and Alpine, followed by the disorderly crossing of these exotic breeds with the native breeds, the non-descript breed goat (NDG) was originated, which represents most of the herd of goats from the Brazilian semiarid region (Cartaxo et al, 2013).…”

“…Feed restriction is a strategy whose effects have been investigated in studies with goats on meat production (Bezerra et al, 2017), fatty acid profile in milk (Palma et al, 2017), immune response (Abdalla et al, 2014), mineral metabolism (Härter et al, 2017), biochemical and endocrine parameters (Lérias et al, 2015), water balance (Teixeira et al, 2006) and intake and productive performance of goats (Ribeiro et al, 2018). However, studies comparing the performance of Boer × NDG F1 with Canindé and Moxotó kids subjected to different levels of feed restriction are not available in the literature.…”