Resumo
The dairy sheep industry has been growing in various regions of the country, and this production system allows the production of lambs for slaughter during the year, making it necessary to apply techniques for growing and fattening to ensure that they have a good development and provide housing quality to the consumer market. Therefore, the objective was to evaluate the influence on the supply of concentrate with different energy levels within the confines of Lacaune lambs. We used 27 lambs and steers with average initial weight 13.3 kg. The treatments were different energy levels in the diet: T1-concentrate with 65% TDN (total digestive nutrient), T2-70% TDN, and T3-75% TDN, both isoproteic with 17% CP (crude protein). The roughage used was Tifton 85 hay (Cynodon spp.) We used a roughage concentrate 50:50. The experimental design was randomized blocks with three replications and three experimental units each. The evaluations were performed every 14 days and the animals were slaughtered after 106 days of confinement, with average weight of 28.61 kg, did not differ between treatments. The results were analyzed by MULTIV. The treatments did not differ for average daily gain (ADG), obtaining an ADG of 150 grams. You can visually verify a better body shape of animals receiving medium and higher levels of energy in relation to the treatment diet that has less energy. Regarding the d
O artigo não apresenta resumo em português.
Resumo
The dairy sheep industry has been growing in various regions of the country, and this production system allows the production of lambs for slaughter during the year, making it necessary to apply techniques for growing and fattening to ensure that they have a good development and provide housing quality to the consumer market. Therefore, the objective was to evaluate the influence on the supply of concentrate with different energy levels within the confines of Lacaune lambs. We used 27 lambs and steers with average initial weight 13.3 kg. The treatments were different energy levels in the diet: T1-concentrate with 65% TDN (total digestive nutrient), T2-70% TDN, and T3-75% TDN, both isoproteic with 17% CP (crude protein). The roughage used was Tifton 85 hay (Cynodon spp.) We used a roughage concentrate 50:50. The experimental design was randomized blocks with three replications and three experimental units each. The evaluations were performed every 14 days and the animals were slaughtered after 106 days of confinement, with average weight of 28.61 kg, did not differ between treatments. The results were analyzed by MULTIV. The treatments did not differ for average daily gain (ADG), obtaining an ADG of 150 grams. You can visually verify a better body shape of animals receiving medium and higher levels of energy in relation to the treatment diet that has less energy. Regarding the d
O artigo não apresenta resumo em português.
Resumo
This experiment was developed at the Animal Science Department, at Federal University of Santa Maria, Brazil with the aim of determining the growth of the organs and other body constituents of lambs, and their proportion in the live weight (LW) and empty body weight (EBW). Twenty-two intact male lambs, from crossbreed Texel x Ideal dams sired by Texel males were used. Four lambs were slaughtered at the beginning of the experiment (24 hours after birth) and groups of six lambs were slaughtered at weaning and when reaching 28 or 33kg of body weight. To study the relative growth of the different body constituents, the halometric equations between the log of the weight of each component, and of the log of the EBW were fitted. The proportions of alimentary tract (AT), other internal organs (GOI), internal fat (IF) and carcass increased with increasing LW and EBW (P 0.05), whereas heart, liver, spleen, kidney, lung with trachea, blood, feet and head decreased (P 0.05). One group of constituents was early maturity (heart, kidney, lung with trachea, feet, blood and head), and another was of late maturity (rumen- reticulum- omasum and abomasum ), AT and IF). The remaining ones (liver, spleen, intestine, skin and carcass) had the same growth rate as EBW.
O experimento foi realizado no Setor de Ovinocultura do Departamento de Zootecnia da Universidade Federal de Santa Maria, com o objetivo de determinar o crescimento de órgãos e outros constituintes do corpo de cordeiros, e suas proporções em relação ao peso vivo (PV) e peso de corpo vazio (PCV). Utilizaram-se 22 cordeiros machos inteiros, filhos de carneiros Texel e ovelhas cruzas (Texel x Ideal). Desses, quatro foram abatidos ao nascimento, e os restantes ao desmame e aos 28 e 33kg. A determinação do crescimento dos constituintes corporais foi realizada através de equações alométricas, utilizando-se o logaritmo do peso de cada componente corporal, em função do logaritmo do PCV. As proporções do trato gastrintestinal (TGI), do conjunto de órgãos internos (COI), da gordura interna (GOI) e da carcaça aumentaram com a elevação do PV e PCV (P 0,05), enquanto que coração, fígado, rins, baço, (pulmão e traquéia), sangue, patas e pele diminuíram suas proporções (P 0,05). Os constituintes do corpo apresentaram diferentes ritmos de crescimento. Um grupo foi de desenvolvimento precoce (coração, rins, pulmões + traquéia, patas, sangue e cabeça), e outro tardio (rúmen, retículo, omaso e abomaso), TGI e GOI. Os restantes (fígado, baço, intestinos, pele e carcaça) cresceram na mesma velocidade que o PCV.
Resumo
This experiment was developed at the Animal Science Department, at Federal University of Santa Maria, Brazil with the aim of determining the growth of the organs and other body constituents of lambs, and their proportion in the live weight (LW) and empty body weight (EBW). Twenty-two intact male lambs, from crossbreed Texel x Ideal dams sired by Texel males were used. Four lambs were slaughtered at the beginning of the experiment (24 hours after birth) and groups of six lambs were slaughtered at weaning and when reaching 28 or 33kg of body weight. To study the relative growth of the different body constituents, the halometric equations between the log of the weight of each component, and of the log of the EBW were fitted. The proportions of alimentary tract (AT), other internal organs (GOI), internal fat (IF) and carcass increased with increasing LW and EBW (P 0.05), whereas heart, liver, spleen, kidney, lung with trachea, blood, feet and head decreased (P 0.05). One group of constituents was early maturity (heart, kidney, lung with trachea, feet, blood and head), and another was of late maturity (rumen- reticulum- omasum and abomasum ), AT and IF). The remaining ones (liver, spleen, intestine, skin and carcass) had the same growth rate as EBW.
O experimento foi realizado no Setor de Ovinocultura do Departamento de Zootecnia da Universidade Federal de Santa Maria, com o objetivo de determinar o crescimento de órgãos e outros constituintes do corpo de cordeiros, e suas proporções em relação ao peso vivo (PV) e peso de corpo vazio (PCV). Utilizaram-se 22 cordeiros machos inteiros, filhos de carneiros Texel e ovelhas cruzas (Texel x Ideal). Desses, quatro foram abatidos ao nascimento, e os restantes ao desmame e aos 28 e 33kg. A determinação do crescimento dos constituintes corporais foi realizada através de equações alométricas, utilizando-se o logaritmo do peso de cada componente corporal, em função do logaritmo do PCV. As proporções do trato gastrintestinal (TGI), do conjunto de órgãos internos (COI), da gordura interna (GOI) e da carcaça aumentaram com a elevação do PV e PCV (P 0,05), enquanto que coração, fígado, rins, baço, (pulmão e traquéia), sangue, patas e pele diminuíram suas proporções (P 0,05). Os constituintes do corpo apresentaram diferentes ritmos de crescimento. Um grupo foi de desenvolvimento precoce (coração, rins, pulmões + traquéia, patas, sangue e cabeça), e outro tardio (rúmen, retículo, omaso e abomaso), TGI e GOI. Os restantes (fígado, baço, intestinos, pele e carcaça) cresceram na mesma velocidade que o PCV.