Efecto en el peso al nacimiento y destete de corderos al administrar tres tipos de raciones alimenticias.

Abstract

The economic crisis has had a considerable effect on human nutrition, especially in livestock production, the shortage of animal feed led to the excessive production of cereals along with the use of pasture and forage, which lack availability and nutritional requirements due to the presence of the different seasons in Ecuador, which is dry and rainy, so all farmers are looking for alternative foods for animal consumption. One of the most important points in sheep production is the weight of the lambs at birth since it is a variable positively related to the survival and growth of the lambs during lactation. The growth of the lambs during lactation involves the weight at birth, body condition of the ewe at birth, feeding and milk production of the mother, feeding system of the lamb, environmental conditions, management and sanitary condition of the ewe and the lamb. The nutrition provided to sheep is important to maintain the flock, especially in pregnant ewes, and thus avoid neonatal deaths. As well as the management and nutrition of the ewe before, during and after lambing is influential in the vigor of the lambs at birth, since poor nutrition of the ewe in gestation produces births of lambs with low weight and poor vigor. Nutritional restriction during gestation directly affects the behavior of the mother towards her offspring. In addition, malnutrition in pregnant ewes can generate toxemia of pregnancy, loss of body condition, drop in colostrum and milk production, low body condition of the lambs during their development and weaning, as well as an increase in postnatal mortality. Birth weights are influenced by the number of fetuses present in the female, i.e. lambs from multiparous mothers have a larger size than lambs with primiparous mothers, which means that multiparous females have better growth and fetal development. The present research work was carried out in Naranjal, Guayas, at the Hacienda La Sabana y Cia, located in the Villa Nueva area. The objective was to evaluate the birth and weaning weights of lambs by administering three types of feed rations, working with 12 lambs which were administered to the mothers, three feed rations, Treatment 1 Tanner grass, treatment 2 Tanner grass plus corn silage and treatment 3 Tanner grass, corn silage and balanced prepared. To obtain a quality milk for the growth of the infants. The information obtained is arranged and compiled in Microsoft Excel tables according to the different variables tested. The statistical program SPSS 22 for Windows was used to process the data with a confidence level of 95%, that is, a significance level of 5%. The results show that there is no significant difference in the three feed rations, i.e. the three treatments effectively respond equally in live weight and weight gain.