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Use of dried poultry litter in the diet of pregnant and lactating Awassi ewes

Emploi De La Litere De Volaille Dans La Ration Des Brebis Awassi Gestantes Et Allaitantes

Uso De Cama De Ponedoras En La Dieta De Ovejas Prenadas Y En Lactacion De La Raza Awassi

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Summary

Two groups of 45 Awassi ewes, were fed a control diet (group C) or a diet containing 0.30 poultry litter from laying birds (group PL). The experiment began when the rams were put with the ewes and continued through pregnancy and lactation. Mean weight changes of ewes of both groups were small and not significantly different. The numbers of ewes that lambed and the numbers of lambs weaned, as proportions of the number of ewes mated, were 0·91 and 0·73 respectively for group C, and 0·93 and 0·70 for group PL. The mean weaning weight of lambs of group C (20·6 kg) was just significantly greater than the value for group PL (18·4 kg) but the estimated mean daily milk yields, 0·716 and 0·626 kg respectively, did not differ significantly. Differences in breeding and lactation performance, between ewes given the control and those given the poultry litter diet, were small for all the data obtained. Also, there was no disease problem related to the use of poultry litter; and the food products milk and cheese, from ewes given poultry litter, were just as acceptable as those from ewes given the control diet.

Résumé

Deux groupes de 45 brebis Awassi ont reçu un régime témoin (groupe C) et un régime contenant 0,30 de résidu de litière sèche de pondeuses (groupe PL). L'expérience a débuté au moment où les béliers sont introduits parmi les femelles et s'est poursuvie pendant la gestation et l'allaitement. Les variations du poids moyen des brebis des deux groupes ont été faibles et les différences statistiquement non significatives. Le nombre d'agnelages et celui des agneaux sevrés, en tant que proportion par rapport au nombre de brebis accouplées, a été de 0,91 et 0,73, respectivement pour le groupe C, et de 0,93 et 0,70 pour le groupe PL. Le poids moyen au sevrage des agneaux du groupe C (20,6 kg) a été à peine plus élevé que le même facteur pour le groupe PL (18,4 kg), mais le rendement moyen quotidien estimé en lait: 0,716 et 0,626 kg respectivement, n'étaient pas significativement différent. Les différences dans les performances de gestation et de lactation entre les brebis nourries avec la ration témoin (C) et celles recevant le régime avec la litère de volaille séchée (PL) ont été faibles pour toutes les données obtenues. Enfin, il n'y aeu aucun problème sanitaire quant à l'emploi de la litère sèche et les produits alimentaires, lait et fromage de ces animaux étaient aussi acceptables que ceux des témoins

Resumen

Dos grupos de 45 ovejas Awassi, recibieron una dieta control (grupo C), o una dieta con 0·30 de cama de ponedoras (grupo PL). El experimento comenzó cuando los carneros fueron puestos con las hembras y continuó durante la preñez y lactación. Los cambios medios de peso de las ovejas en ambos grupos fueron pequeños y no significativamente diferentes. El número de ovejas que parieron y el número de corderos destetados, como proporción del número de ovejas apareadas, fueron 0·91 y 0·73 respectivamente para el grupo C, y 0·93 y 0·70 para el grupo PL. La media del peso de los corderos al destete pertenecientes al grupo C (20·6 kg) fue significativamente más alto que el valor obtenido para el grupo PL (18·4), pero la media estimada del producido diario de leche de los dos grupos 0·716 y 0·626 kg respectivamente, no difirieron significativamente. No hubo diferencias reproductivas, ni de lactación entre los dos grupos. Tampoco se detectaron enfermedades relacionadas con el suministro de cama de ponedoras. Los productos y subproductos lech y queso, no fueron afectados por la alimentación experimental.

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Muwalla, M.M., Abo-Shehada, M.N., Tawfeek, F. et al. Use of dried poultry litter in the diet of pregnant and lactating Awassi ewes. Trop Anim Health Prod 27, 106–112 (1995). https://doi.org/10.1007/BF02236322

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