ABSTRACT
ABSTRACT Objective. Aimed to identify the weight and yield of the commercial cuts, muscularity, and adiposity in the carcasses of sheep and goats grazing in the Caatinga supplemented with different sources of supplementations; these include feed-blocks. Material and methods. Sixty non-castrated males an initial average body weight of 18.63 ± 1.93 kg were used: 30 goats and 30 sheep all animals did not have a defined breed standard (WDBS). The experimental design used was entirely randomized (DIC), in factorial scheme 3x2 (three types of supplementation: mineral salt, MBs and MBs + buffel hay, and two species: sheep and goats) and 10 replications. Animals were raised in a rangeland grazing system in an area with vegetation characteristic of Caatinga ecosystem under three types of supplementation: 1: only mineral salt; 2: Feed blocks (MBs); and 3: MBs + buffel hay There were measured the weight, yield and the components of left half-part of carcass of lambs and kids. Results. The sheep were superior to goats in carcass conformation, loin-eye area, index of muscularity of the leg and compactness index of the leg while the goats were superior to sheep in leg muscles weight. Conclusions. Sheep and Goats, when fed with supplementation of pasture feeding blocks in the Caatinga ecosystem; Supplementation with mineral salt and Multinutritional Blocks with and without Buffel can be used to improve herds in the caatinga, with similar results among the three. Sheep show more adiposity of meat than goats, in contrast, goats have higher musculature than sheep when fed with feed blocks.
RESUMEN Objetivo. Con el objetivo de identificar el peso y rendimiento de los cortes comerciales, musculatura y adiposidad en las canales de borregos y cabritos pastando en la Caatinga suplementado con diferentes fuentes de suplementos; Estos incluyen bloques de alimentación. Materiales y métodos. Se utilizaron 60 machos no castrados con un peso corporal medio inicial de 18,63 ± 1,93 kg: 30 borregos y 30 cabritos, todos los animales no tenían un estándar de raza definido (WDBS). El diseño experimental utilizado fue totalmente al azar (DIC), en esquema factorial 3x2 (tres tipos de suplementación: sal mineral, MBs y MBs + heno buffel, y dos especies: borregos y cabritos) y 10 repeticiones. Los animales fueron criados en un sistema de pastoreo de pastizales en un área con vegetación característica del ecosistema de Caatinga bajo tres tipos de suplementación: 1: sal mineral solamente; 2: Bloques de alimentación (MBs); Y 3: MBs + heno buffel Se midió el peso, el rendimiento y los componentes de la mitad izquierda de la carcasa de corderos y cabritos. Resultados. Las cordeiros fueron superiores a los cabritos en conformación de carcasas, área de lomo, índice de musculatura de la pierna y índice de compacidad de la pierna mientras que los cabritos fueron superiores a las cordeiros en el peso de los músculos de las piernas. Conclusión. Cordeiros y cabritos, cuando se alimentan con suplementos de bloques de alimentación de pasto en el ecosistema de Caatinga; La suplementación con sal mineral y Bloques Multinutritivos con y sin Buffel puede ser utilizada para mejorar los rebaños en la caatinga, con resultados similares entre los tres. Las cordeiros muestran más adiposidad de carne que los cabritos, en contraste, las cabritos tienen mayor musculatura que las cordeiros cuando se alimentan con bloques de alimentación.
ABSTRACT
Este trabalho avaliou o desempenho e as características de carcaça e não constituintes de carcaça de ovinos e caprinos em área de caatinga, suplementados com blocos multinutricionais (BMs). O trabalho foi desenvolvido na Estação Experimental da EMEPA em Soledade, Paraíba, Brasil, de acordo com um delineamento inteiramente ao acaso com 3x2 tratamentos fatoriais (3 níveis de suplementação de animais em pastejo na caatinga: S1 = sal mineral; S2 = BMs; e S3 = BMs + feno de capim buffel, e duas espécies de animais: ovinos e caprinos) e dez repetições de um animal. Os ganhos de peso se mostraram mais elevados para os animais suplementados com sal mineral. Os ovinos obtiveram ganho de peso médio diário (GPMD=104,83g) e ganho de peso total (GPT=11,32kg) superior aos caprinos (GPMD=92,90g e GPT=10,04kg). O peso vivo ao abate (PVA), o peso da carcaça quente (PCQ) e fria (PCF) foram superiores para os animais suplementados com sal mineral. O peso corporal vazio (PCV), rendimento biológico (RB), rendimento comercial (RC), rendimento verdadeiro (RV) e perda por resfriamento (PPR) não foram afetados pelos níveis de suplementação. O PVA dos ovinos (PVA=27,62kg) superou o dos caprinos (PVA= 25,34kg), e o RB, RC e RV dos caprinos foram superiores aos dos ovinos. Houve efeito significativo (P<0,05) dos níveis de suplementação no rendimento (%) do peso do trato gastrintestinal cheio (TGIc), peso do trato gastrintestinal vazio (TGIv), fígado, coração e rins. A suplementação com blocos multinutricionais ou em conjunto com feno de baixa qualidade, para ovinos e caprinos sob pastejo direto na caatinga, com forragem em quantidade e qualidade satisfatórias, não resulta em ganhos produtivos significativos...
This study evaluated the performance and carcass characteristics and non carcass constituents of sheep and goats foraging in the caatinga rangeland, supplemented with multi-nutrients blocks (MBs). The experiment was carried out at EMEPA Experimental Station in Soledade-PB, Brazil, according to a completely randomized design with 3x2 factorial treatments (three levels of supplementation of animal foraging in the caatinga rangeland: S1 = mineral salt; S2 = MBs, and S3 = MBs + buffel grass hay, and 2 species: sheep and goat) and 10 replications of one animal. Mean daily and total weight gain (MDWG and TWG) showed to be higher for animals supplemented with salt, and it was higher for sheep (MDWG=104.83 g and TWG=11. 32 kg) than for goats (MDWG=92.90 g and TWG=10.04 kg). Slaughtering weight (SW), hot carcass (HCW) and cold carcass (CCW) weights were higher for animals supplemented with mineral salt. Empty body weight (EBW), biological yield (BY), commercial yield (CY), true yield (TY) and loss by cooling (LC) were not affected by supplementation levels. Sheep SW=27.62 kg was higher than goat SW=25.34, while BR, CR and VR were higher for goats. There were significant (P<0.05) effects of supplementation levels on yield (%) of weight of the full gastrointestinal tract (IGTc), weight of the empty gastrointestinal tract (IGTv), liver, heart and kidneys. Supplementation with multi-nutrient blocks alone or in conjunction with low quality hay for sheep and goats grazing in the caatinga rangeland with satisfactory forage quantity and quality does not result in significant productivity gains...